Page 1
915 ZOOM EZT & IZT
Service Manual
Models 915055, 057, 059, 06 5, 067, 501, 502
00459900 7/05
Printed in USA
Page 2
TABLE OF CONTENTS
Section 1 - Introduction . . . . . . . . . . . . . . . . . . 1-2
1.1 The Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.2 Service And Replacement Parts . . . . . . . . . . . . . 1-2
1.3 Product Registration. . . . . . . . . . . . . . . . . . . . . . . 1-2
1.4 Unauthorized Replacement Parts . . . . . . . . . . . . 1-2
1.5 Disclaimer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1.6 Technical Service Communications . . . . . . . . . . . 1-2
Section 2 - Safety. . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.1 Safety Alerts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.2 Notations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.3 Equipment Safety. . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.4 Safety Rules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Section 3 - Specifications . . . . . . . . . . . . . . . . . 3-7
Section 4 - General Maintenance
& Adjustments . . . . . . . . . . . . . . . . . . . . . . . 4-8
4.1 Controls and Features . . . . . . . . . . . . . . . . . . . . . 4-8
4.2 Moving Unit Manually. . . . . . . . . . . . . . . . . . . . . . 4-9
4.3 Filling Fuel Tanks . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.4 General Lubrication . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.5 Axle Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.6 Removing Mower Deck . . . . . . . . . . . . . . . . . . . 4-10
4.7 Leveling and Adjusting Pitch of Mower Deck. . . 4-11
4.8 Adjusting Anti-Scalp Roller. . . . . . . . . . . . . . . . . 4-11
4.9 Hydrostatic Transmission Neutral Adjustment . . 4-12
4.10 Adjusting the Unit to Track Straight . . . . . . . . . 4-13
4.11 Adjusting the Parking Brake. . . . . . . . . . . . . . . 4-14
Section 5 - Engine . . . . . . . . . . . . . . . . . . . . . . 5-15
5.1 Engine Troubleshooting. . . . . . . . . . . . . . . . . . . 5-15
5.2 Checking Engine Oil. . . . . . . . . . . . . . . . . . . . . . 5-16
5.3 Changing Oil. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.4 Checking Engine Cooling. . . . . . . . . . . . . . . . . . 5-16
5.5 Cleaning the Air Cleaner . . . . . . . . . . . . . . . . . . 5-16
5.6 Changing the Air Cleaner Element. . . . . . . . . . . 5-16
5.7 Inspect Muffler/spark Arrester . . . . . . . . . . . . . . 5-16
5.8 Replace Spark Plugs . . . . . . . . . . . . . . . . . . . . . 5-16
5.9 Engine Removal. . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.10 Engine Installation . . . . . . . . . . . . . . . . . . . . . . 5-17
Section 6 - Mower Deck. . . . . . . . . . . . . . . . . . 6-19
6.1 Replacing PTO Belt . . . . . . . . . . . . . . . . . . . . . . 6-19
6.2 Replacing Mower Blade. . . . . . . . . . . . . . . . . . . 6-19
6.3 Sharpening Mower Blade. . . . . . . . . . . . . . . . . . 6-19
Section 7 - Drive Train . . . . . . . . . . . . . . . . . . . 7-21
7.1 Hydro Transmission Troubleshooting. . . . . . . . . 7-21
7.2 Hydro-Gear Fluid Recommendations. . . . . . . . . 7-22
7.3 Hydro-Gear Transmission Removal. . . . . . . . . . 7-22
7.4 Replacing Hydrostatic Belt. . . . . . . . . . . . . . . . . 7-23
Section 8 - Lift System. . . . . . . . . . . . . . . . . . . 8-24
8.1 Lift System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
8.2 Lift System Removal . . . . . . . . . . . . . . . . . . . . . 8-24
Section 9 - Steering . . . . . . . . . . . . . . . . . . . . . 9-25
9.1 Steering Controls . . . . . . . . . . . . . . . . . . . . . . . . 9-25
9.2 Adjusting Steering Lever Height for Serial Numbers
above 10,000 only . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29
Section 10 - Fuel System. . . . . . . . . . . . . . . . 10-30
10.1 Fuel System Troubleshooting . . . . . . . . . . . . 10-30
10.2 Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31.
10.3 Fuel System Contamination. . . . . . . . . . . . . . 10-31
10.4 Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-31
10.5 Fuel Tank Removal . . . . . . . . . . . . . . . . . . . . 10-31
Section 11 - Electrical . . . . . . . . . . . . . . . . . . 11-32
11.1 Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-32
11.2 Electrical Measurements . . . . . . . . . . . . . . . . 11-32
11.3 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-33
11.4 Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-34
11.5 Solenoid And Relays . . . . . . . . . . . . . . . . . . . 11-35
11.6 Lighting Circuits . . . . . . . . . . . . . . . . . . . . . . . 11-35
11.7 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-35
11.8 Diodes And Rectifiers. . . . . . . . . . . . . . . . . . . 11-35
11.9 Electric Clutch . . . . . . . . . . . . . . . . . . . . . . . . 11-36
11.10 Electrical - Serial numbers above 10,000 . . 11-36
11.11 Electrical System . . . . . . . . . . . . . . . . . . . . . 11-40
11.12 Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . 11-41
11.13 Continuity Diagram. . . . . . . . . . . . . . . . . . . . 11-42
11.14 Electrical - Serial numbers above 5,000 and
below 9,999 . . . . . . . . . . . . . . . . . . . . . . . . . 11-43
11.15 Electrical System . . . . . . . . . . . . . . . . . . . . . 11-46
11.16 Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . 11-47
11.17 Continuity Diagram. . . . . . . . . . . . . . . . . . . . 11-48
11.18 Electrical - Serial numbers below 5,000. . . . 11-49
11.19 Electrical System . . . . . . . . . . . . . . . . . . . . . 11-52
11.20 Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . 11-53
11.21 Continuity Diagram. . . . . . . . . . . . . . . . . . . . 11-54
Section 12 - Mower Attachment . . . . . . . . . . 12-55
12.1 Mower Spindle Removal . . . . . . . . . . . . . . . . 12-55
1
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SECTION 1 - INTRODUCTION
1.1 THE MANUAL
The purpose of this manual is to provide complete
instructions for service, maintenance, disassembly,
repair, and installation of the mechanical components
for the 915 ZT.
Dealer trained service personnel should use this
manual as a supplement to and reminder of the training
sessions conducted by the company.
Read all information for servicing a part or system
before repair work is started to avoid needless
disassembly.
Operation
Before operation of the unit, carefully and completely
read manuals supplied with the unit. The contents will
provide you with an understanding of safety
instructions and controls during normal operation and
maintenance.
Safety Messages
For your safety and the safety of others always read,
understand, and follow all DANGER, WARNING, and
CAUTION messages found in manuals and on safety
decals.
Directional Reference
All reference to left, right, front, or rear are given from
the operator in the operator position and facing the
direction of forward travel.
1.2 SERVICE AND REPLACEMENT PARTS
When ordering publications, replacement parts, or
making service inquiries, know the Model and Serial
numbers of your unit and engine.
Numbers are located on the product registration form in
the unit literature package. They are printed on a serial
number label, located on the frame of your unit.
1
1. Unit Serial Number
Label
2. Engine Serial Number
Label
2
the warranty. Claims meeting requirements during
limited warranty period will be honored.
1.4 UNAUTHORIZED REPLACEMENT
PARTS
Use only Ariens replacement parts. The replacement of
any part on this vehicle with anything other than a
Ariens authorized replacement part may adversely
affect the performance, durability, or safety of this unit
and may void the warranty. Ariens disclaims liability for
any claims or damages, whether warranty, property
damage, personal injury , or death arising out of the use
of unauthorized replacement parts.
1.5 DISCLAIMER
Ariens reserves the right to discontinue, make changes
to, and add improvements upon its products at any
time without public notice or obligation. The
descriptions and specifications contained in this
manual were in effect at printing. Equipment described
within this manual may be optional. Some illustrations
may not be applicable to your unit.
1.6 TECHNICAL SERVICE
COMMUNICATIONS
Ariens Technical Service communicates information to
the field using Service Letters, Service Bulletins,
Product Notices, and Campaigns. Each
communication signifies a type of information and
priority. The dealer is responsible to carry out the
directive provided in the communication. The types of
communication are:
Service Letter - General technical information for the
dealer. Technical information on how to service the
product and product improvements.
Service Bulletin - Notification to update products to
resolve certain issues or a notification of a policy
change.
Product Notices - Notification of limited product issue
located in a certain region. This is a limited distribution
to only those who received the product involved.
Campaigns - Notification of a safety related issue. All
products must be updated and are tracked by the
factory until all units are corrected.
Figure 1
1.3 PRODUCT REGISTRATION
A warranty registration card must be filled out, signed,
and returned at time of purchase. This card activates
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SECTION 2 - SAFETY
WARNING: This cutting machine is capable
of amputating hands and feet and throwing
objects. Failure to observe the safety
instructions in the manuals and on decals
could result in serious injury or death.
Slopes are a major factor related to loss-ofcontrol and tip-over accidents. Operation on
all slopes requires extra caution.
Tragic accidents can occur if the operator is
not alert to the presence of children. Never
assume that children will remain where you
last saw them.
Gasoline is extremely flammable and the
vapors are explosive, handle with care.
Disengage attachment, stop unit and engine,
remove key, engage parking brake, and allow
moving parts to stop before leaving operator’s
position.
2.1 SAFETY ALERTS
Look for these symbols to point out
important safety precautions. They
mean:
Attention!
Personal Safety Is Involved!
Become Alert!
Obey The Message!
The safety alert symbol is used in decals and with this
manual. Understand the safety message. It contains
important information about personal safety on or near
the unit.
DANGER: IMMINENTLY HAZARDOUS
SITUATION! If not avoided, WILL RESULT in
death or serious injury.
WARNING: POTENTIALLY HAZARDOUS
SITUATION! If not avoided, COULD RESUL T
in death or serious injury.
CAUTION: POTENTIALLY HAZARDOUS
SITUATION! If not avoided, MAY RESULT in
minor or moderate injury. It may also be used
to alert against unsafe practices.
2.2 NOTATIONS
NOTE: General reference information for proper oper-
ation and maintenance practices.
IMPORTANT: Specific procedures or information
required to prevent damage to unit or attachment.
2.3 EQUIPMENT SAFETY
ALWAYS replace missing or damaged Safety Decals.
1. Caution!
• Maximum tongue weight: 30 lbs.
• Maximum trailer weight: 300 lbs.
• Do not use hitch with bagger attached.
• Do not use on steep hills or slopes.
• Do not park on hills when trailer is attached.
• Do not use with any ground engaging equipment.
2. Danger!
Avoid injury - Stay clear of rotating parts.
3. Danger!
Always keep feet and hands away from rotating
parts.
Always stand clear of discharge area. Do not direct
discharge toward other people.
Keep people away from unit while operating.
Shut off engine, remove key, and read manual
before you adjust or repair unit.
NO STEP! Always keep feet away from rotating
parts.
4. Warning!
Always stand clear of discharge area.
Do not operate mower unless bagger is attached
or guards are in operating position.
5. Danger! To Avoid Serious Injury or Death
Read the operator’s manual.
Keep children and others away from unit while
operating.
Never direct discharge toward other people.
Thrown objects can cause injury.
Look down and behind before and while backing.
Never carry children.
Go up and down slopes, not across.
DO NOT operate on slopes over 10
• If machine stops going uphill, stop blade and back
down slowly.
• Avoid sudden turns.
• Keep safety devices (guards, shields switches,
etc.) in place and working.
• Check interlock system per manual before use.
o
.
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• Understand location and function of all controls.
• Never allow operation by untrained persons.
• Disengage PTO, stop unit and engine, set parking
brake and remove key before making any
inspections, repairs, etc.
6. Hot Surfaces!
DO NOT touch parts which are hot from operation.
ALWAYS allow parts to cool.
7. Caution
No smoking.
Fill fuel tanks to 2-1/2 in. (6.35 cm) below bottom of
filler neck.
• Never fill fuel tank when engine is running, hot or
unit is indoors. Never overfill fuel tank.
• Replace fuel cap securely and clean up spilled
fuel.
2.4 SAFETY RULES
If unit is to be used by someone other than original
purchaser; loaned, rented or sold, ALWAYS provide
this manual and any needed safety training before
operation. Only the user can prevent and is responsible
for accidents or injuries occurring to themselves, other
people or property. Read, understand, and follow all
safety practices in Owner/Operator Manual before
assembling, using or working on this mower. ALWAYS
remove key from ignition and wire from spark plug
before assembly, or working on this unit.
Inspect unit before each use for: missing or damaged
decals and shields, correctly operating safety interlock
system, and deterioration of grass catchers. Replace
or repair as needed.
ALWAYS check overhead and side clearances
carefully before operation. ALWAYS be aware of traffic
when crossing or operating along streets or curbs.
Keep children, people, and pets away. Be alert and
shut off unit if anyone enters work area. Keep children
under watchful care of a responsible adult.
NEVER allow children to operate or pl ay on or near
unit.
Keep area of operation clear of all toys, and debris.
Thrown objects can cause injury.
Stay alert for hidden hazards, holes and ruts. Avoid
uneven or rough terrain. DO NOT operate near dropoffs, ditches, or embankmants. Unit can suddenly turn
over if a wheel is over the edge of a cliff or ditch, or if
an edge caves in.
Dust, fog, etc. can reduce vision and cause an
accident. Operate unit only when there is good visibility
and light.
Data indicates that operators, age 60 and above, are
involved in larger percentage of riding mower related
injuries. These operators should evaluate their ability to
operate the riding mower safely enough to protect
themselves and others from serious injury.
Only trained adults may operate unit. Training includes
being familiar with controls and actual operation.
NEVER operate unit after or during the use of
medications, drugs or alcohol.
NEVER allow anyone to operate this unit when their
alertness or coordination is impaired.
Wear adequate safety gear, sturdy shoes and
protective gloves.
DO NOT wear l oose clothing or jewelry and tie back
hair that may get caught in rotating parts. Protect eyes,
face and head from objects that may be thrown from
unit. Wear appropriate hearing protection. Always wear
safety goggle s or safety glasses wi th side shi elds when
operating mower.
Avoid sharp edges. Sharp edges can cut. Moving parts
can cut off fingers or a hand. ALWAYS keep hands and
feet away from all rotating parts during operation.
Rotating parts can cut off body parts.
ALWAYS keep hands away from all pinch points.
Start and operate unit only when sealed in operator’s
position. Steering control levers must be in neutral,
PTO disengaged and parking brake set when starting
engine. ALWAYS keep body and hands away from pin
holes or nozzles which eject hydraulic fluid under
pressure.
DO NOT touch unit parts which might be hot from
operation. Allow parts to cool before attempting to
maintain, adjust or service.
NEVER place your hands or any part of your body or
clothing inside or near any moving part while unit is
running.
NEVER direct discharge towards persons or property.
Thrown objects may ricochet back towards operator.
ALWAYS stand clear of the discharge area.
ALWAYS disengage attachment, stop unit and engine,
remove key, engine parking brake, and allow moving
parts to stop before leaving operator’s position.
Use extreme caution on gravel surfaces.
Disengage PTO when attachment is not in use and
when crossing gravel surfaces.
DO NOT operate unit if safety interlock system is
damaged or disabled. Check safety interlock before
each use.
ALWAYS remove key to prevent unauthorized use.
DO NOT operate at too fast a rate. Slow down before
turning.
Stop engine before removing grass catcher or
unclogging chute.
SO NOT mow on wet grass. Reduced traction could
cause sliding.
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DO NOT try to stabilize the machine by putting your
foot on the ground.
Know the weight of loads. Limit loads to those you can
safely control and the unit can safely handle.
ALWAYS keep protective structures, guards and
panels in good repair, in place and securely fastened.
Do not operate without either entire grass catcher or
the discharge guard in place.
DO NOT operate in reverse unless absolutely
necessary. ALWAYS look down and behind before and
while backing; especially for children.
Follow the manufacturer’s recommendations for wheel
weights or counterweights to improve stability when
using attachments.
NEVER carry passengers-es pec ia ll y ch ild r en- even
with blades off.
Use extra care when approaching blind corners or
objects that may obscure vision of hidden obstacles
and children.
If you cannot back up a slope or you feel uneasy on it,
do not mow it.
Mow up and down slopes, not across them.
Use slow speed on any slope. Tires may lose traction
on slopes even though the brakes are functioning
properly.
Keep all movements on the slope slow and gradual.
DO NOT make sudden changes in spe ed or dire cti on.
Use extra care while operating machines with grass
catcher or other attachments. They can affect stability
of the machine.
Avoid starting, stopping, or turning on a slope. If tires
lose traction, disengage the blades and proceed slowly
straight down the slope.
DO NOT operate on slopes over 10
o
.
DO NOT park on slopes unless necessary. If unit is
parked on a slope, AL WAYS chock or block wheels and
set parking brake.
DO NOT disengage or bypass transmission and coast
downhill.
Tow only with a machine that has a hitch designed for
towing. Do not attach towed equipment except at the
hitch point.
Follow the manufacturer’s recommendations for weight
limits for towed equipment and towing slopes.
NEVER allow children or others in or on towed
equipment.
On slopes, the weight of the towed equipment may
cause loss of traction and loss of control. Travel slowly
and allow extra dista nce to stop. Use extra care when
loading or unloading unit onto trailer or truck.
Secure unit chassis to transport vehicle.
NEVER secure from rods or linkages that could be
damaged.
DO NOT transport machine while engine is running.
ALWAYS turn off power to attachment and shut off fuel
when transporting unit.
Keep unit free of grass clippings, leaves and other
debris. Clean up oil or fuel spills.
This product is equipped with an internal combustion
type engine. DO NOT use unit on or near any
unimproved, forest-covered or brush-covered land
unless exhaust system is equipped with a spark
arrester meeting applicable local, state or federal laws.
A spark arrester, if it is used, must be maintained in
effective working order by operator.
Fuel is highly flammable and its vapors are explosive.
Handle with care. Use an approved fuel container.
NO smoking. NO sparks, NO flames.
ALWAYS allow engine to cool before servicing.
NEVER fill fuel tank when engine is running or hot from
operation.
NEVER fill or drain fuel tank indoors.
NEVER overfill fuel tank.
Replace fuel cap securely and clean up spilled fuel.
NEVER fill containers inside a vehicle or on a truck or
trailer bed with a plastic liner. Always place containers
on the ground away from your vehicle before filling.
When practical, remove gas-powered equipment from
the truck or trailer and refuel it on the ground. If this is
not possible, then refuel such equipment on a trailer
with a portable container, rather than from a gasoline
dispenser nozzle.
Keep the nozzle in contact with the rim of the fuel tank
or container opening at all times until fueling is
complete. Do not use a nozzle lock-open device.
If fuel is spilled on clothing, change clothing
immediately.
Avoid Electric Shock. Objects contacting both battery
terminals at the same time may result in injury and unit
damage. DO NOT reverse battery connections.
Explosive Gases from battery can cause death or
serious injury. Poisonous battery fluid contains sulfuric
acid and its contact with skin, eyes or clothing can
cause severe chemical burns.
NO flames, NO sparks, NO smoking near battery.
ALWAYS wear safety glasses and protective gear near
battery. Use insulated tools.
DO NOT TIP battery beyond a 45
o
angle in any
direction.
ALWAYS keep batteries out of reach of children.
Battery posts, terminals and related accessories
contain lead and lead compounds, chemicals known to
the State of California to cause cancer and
reproductive harm. Wash hands after handling.
Reverse connections may result in sparks which can
cause serious injury. Always connect positive (+) lead
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of charger to positive (+) terminal, and negative (-) lead
to negative (-) terminal.
ALWAYS disconnect negative (-) cable FIRST and
positive (+) cable SECOND. ALWAYS connect positive
(+) cable FIRST, and negative (-) cable SECOND.
A frozen battery can explode and result in death or
serious injury. DO NOT charge or jump start a battery
containing frozen fluid. Thaw the battery before putting
on a charger or jump starting.
ALWAYS keep protective structures, guards, and
panels in good repair, in place and securely fastened.
NEVER modify or remove safety devices.
DO NOT change engine governor settings or overspeed engine.
Fumes from engine exhaust can cause injury or death.
DO NOT run engine in an enclosed area. Always
provide good ventilation.
ALWAYS maintain unit in safe operating condition.
Damaged or worn out muffler can cause fire or
explosion.
Stop and inspect equipment if you strike an object or if
there is an unusual vibration. Repair, if necessary,
before restarting. Never make adjustment s or repairs
with the engine running.
Mower blades are sharp and can cut you. Wrap the
blade(s) or wear gloves, and use extra caution when
servicing them. NEVER weld or straighten mower
blades.
Rotation of one blade may cause rotation of the other
blades.
Check brake operation frequently. Adjust and service
as required.
Keep all hardware properly tightened.
Stored energy in springs can cause injury.
Maintain or replace safety and instruction labels, as
necessary.
Never store the machine or fuel container inside a
building where there is an open flame, such as a water
heater.
Shut off fuel (if provided) and allow engine to cool
completely before storing in closed area or covering
unit.
Clean grass and debris from unit, especially from
around muffler and engine, to help prevent fires.
For extended storage, clean unit thoroughly. See
Engine Manual for proper storage.
Use only attachments or accessories designed for your
unit.
Check attachment components frequen tly. If worn or
damaged, replace with manufacturer’s recommended
parts.
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SECTION 3 - SPECIFICATIONS
Model Number 915065 915502 915067 915055 915501 915057 915059
Model 1540 1540 1740 1944 1844 2148 2352
Engine
Type
Engine Power –
HP (kW) at
Governed RPM
Max Governed
RPM
Speed
Forward Max. –
m.p.h (km/h)
Reverse Max. –
m.p.h (km/h)
Turning Radius Zero
Brakes Internal Transmission
Electrical
Starter Electric
Battery 12 Volt Maintenance Free
PTO (Power Take-
Off)
Fuel
Fuel Type Refer to Engine Manual
Fuel Tank
Capacity – gal. (L)
Transmission Hydrostatic Drive
Size and Weight
Length – in. (cm) 76 (193)
Width – in. (cm) 55.5 (141) 59 (150) 63 (160) 66 (168)
Weight – lbs (kg) 616 (279) 660 (299) 687 (312) 714 (324) 740 (336)
Height – in. (cm) 40 (102) 43 (109)
Tires
Front Tire Size –
in. (cm)
Rear Tire Size –
in. (cm)
Front Tire
Pressure – psi
(kPa)
Rear Tire
Pressure – psi
(kPa)
Mower Deck
Cutting Height –
in. (cm)
Cutting width – in.
(cm)
Max. Towing
Capacity – lbs (kg)
Max. Tongue
Weight – lbs (kg)
Single
Cylinder
Kohler
15 (11.2) 15 (11.2) 16 (11.9) 19 (14.2) 18 (13.4) 21 (15.7) 23 (17.2)
3375 2700 3375 3250 2550 3250
6.0 (9.7) 6.5 (10.5)
18 x 8.5 (45.7 x 21.6) 18 x 9.5 (45.7 x 24.1)
Twin
Cylinder
Kawasaki
10 (69) 12 (83)
40 (102) 44 (112) 48 (122) 52 (132)
Single
Cylinder
Kohler
Electric Clutch/Brake
11 x 4 (27.9 x 10.2)
1-1/2 - 4-1/2 (3.81 - 11.4)
Twin
Cylinder
Kohler
3.0 (4.8)
8 (30.3)
46 (317)
300 (136)
30 (13.6)
Twin
Cylinder
Kawasaki
Twin Cylinder Kohler
3 - 7
Page 9
SECTION 4 - GENERAL MAINTENANCE & ADJUSTMENTS
4.1 CONTROLS AND FEATURES
1
14
1. Ignition Switch
2. PTO Switch
3. Throttle Lever
4. Seat
5. Steering Levers
6. Parking Brake
7. Fuel Tank
8. Headlights (915067, 055, 057, 059, 501)
2
3
15
13
4
7
12
9. Axle Lock (915067, 055, 057, 059, 501)
10.Mower Lift Pedal
11.M ower Deck
12.Discharge chute
13.Fuel Sh ut-Off Valve
14.Choke Control (915055, 057, 059, 501, 502)
15.Hour Meter (915067, 055, 057, 059, 501, and
optional on 915065, 502)
11
5
10
6
9
7
8
OE0220
Figure 2
4 - 8
Page 10
4.2 MOVING UNIT MANUALLY
WARNING: DO NOT disengage or bypass
transmission and coast downhill.
Disengage (2) transmission bypass levers to drive unit
and engage (1) transmission bypass levers to push unit
manually (Figure 3).
1
Models 915065
2
and 502
1
2
05305600
Models 915055,
057, 059, 067
and 501
1
2
05305200
1
1. Transmission Bypass Lever Engaged
2. Transmis si on By p as s Lev er D ise ng age d
2
OE0260
Figure 3
1
1. Fuel Cap
1
OE0180
Figure 4
4. Remove the cap from the fuel tank.
5. Fill the fuel tank with the proper grade of fuel as
recommended by the engine manufacturer. Do not
spill any fuel.
6. Fill fuel tanks to 2-1/2 in. (6.35 cm) below bottom of
filler neck.
7. Replace the cap on the fuel tank and tighten.
8. ALWAYS clean up any spilled fuel before starting
the engine.
4.4 GENERAL LUBRICATION
Each front caster has a grease fitting.
All grease fittings should be greased at 25-hour
intervals. Clean and inspect parts and replace as
required.
1. Clean the fittings before attaching the grease gun.
2. Use Stens Mix Hi-Temp grease (a moly-lithium
grease) or equivalent. Add grease unti l it appe ar s
at the ends of the bearing or ends of the shaft.
3. Check all parts for wear and damage.
4. Every 25 hours apply motor oil to all pin
connections, pivots points and areas where sliding
occurs.
4.3 FILLING FUEL TANKS
WARNING: Fuel is highly flammable and its
vapors are explosive. H andle with care.
NO smoking, NO sparks, NO flames.
Refer to Engine Manual for proper fuel.
To add fuel to the fuel tank:
1. ALWAYS place unit in open or well ventilated area.
2. Stop engine and allow to cool for two minutes.
3. Clean the fuel cap and the area around the fuel
cap to prevent dirt from entering the fuel tank.
CAUTION: Before performing any service or
adjustments:
• Turn PTO switch "OFF".
• Park mower on a hard, flat, level surface.
• Set parking brake.
• Turn ignition switch "OFF" and remove
key.
• Wait for blades and all moving parts to
stop.
4 - 9
Page 11
4.5 AXLE LOCKS
4.6 REMOVING MOWER DECK
(915067, 055, 057, 059, 501) (Figure 5)
NOTE: The unit comes shipped with the front axle in
the lockout position.
If a pivoting front axle is needed: Remove axle lock
hardware from lockout position and install axle lock
hardware in pivoting position on both sides of front
axle.
NOTE: To lock front axle, install axle lock hardware in
the lockout position on both sides of the axle.
1. Front Axle
2. Pivoting Position
3. Lockout Position
4. Axle Lock
Hardware
2
1
4
3
OE0240
Remove (Figure 6)
1. Remove PTO belt from electric clutch (see
Replacing PTO Belt).
NOTE: Perform steps 2 and 3 for the right and left
sides of unit.
2. Remove guide arm from front mount bracket.
3. Remove rear lift link, rear trunnion, front lift link,
and front trunnion from mower deck and mower lift.
4. Slide mower deck out from under unit.
Install (Figure 6)
1. Slide mower deck under unit.
NOTE: Perform steps 2 and 3 for the right and left
sides of unit.
2. Install rear lift link, rear trunnion, front lift link, and
front trunnion on mower deck and mower lift.
3. Install guide arm on front mount bracket.
4. Install PTO belt on electric clutch (see Replacing
PTO Belt)).
Figure 5
1. Mower Deck
2. Front Trunnion
3. Front Lift Link
4. Front Mount Bracket
5. Mower Lift
6. Guide Arm
7. PTO Belt
8. Rear Trunnion
9. Rear Li ft Link
5
7
6
4
9
8
2
OE0230
1
3
Figure 6
4 - 10
Page 12
4.7 LEVELING AND ADJUSTING PITCH
3
OF MOWER DECK
Adjust on a level surface, with the tires inflated to the
correct air pressure.
Level Mower Deck
1. Install adjustment pin in the fourth adjustment hole
(Figure 7).
2
1
• TO RAISE the mower deck, turn rear trunnion
clockwise several turns.
• TO LOWER the mower deck, turn rear trunnion
counterclockwise several turns.
6. Install rear trunnion and rear lift link on mower deck
and mower lift.
7. Check that the mower deck is level:
Rotate right and left mower blades to face side-to-
side.
Measure outer edge of mower blades to ground.
Measurement must be within 1/4 inch (6.35 mm).
• If mower deck is not level, repeat steps 5 and 6.
• If mower deck is level, record the distance from
rear edge of mower blades to the ground and then
adjust pitch of mower deck.
1. Adjustment Pin
2. Mower Lift Pedal
OE0060
Figure 7
2. Rotate the right and left mower blades until the
ends of both mower blades are facing rearward
(Figure 8).
NOTE: The rear blade cutting height should be 2-7/8 to
3 in. (7.3 to 7.6 cm) from rear edge of mower blades to
the ground on both blades (Figure 8).
IMPORTANT: The distance from rear edge of mower
blades to the ground MUST NOT exceed 3 in. (7.6 cm)
(Figure 8).
Mower Deck Shown
From The Side
6
1. Mower Deck
2. Mower Blade
3. Front of Mower Deck
4. Front Blade Cutting Height
5. Ground
6. Rear Blade Cutting Height
5
1
2
4
OE0010
Figure 8
3. Measure from rear edge of mower blades to the
ground.
4. Perform steps 5 through 7 if the measurement is
too high to too low on either side of mower deck.
5. Remove rear lift link and rear trunnion from mower
deck and mower lift.
Adjust Pitch of Mower Deck
IMPORTANT: The mower blade end used to level the
mower deck must be used to adjust the pitch of the
mower deck.
1. Rotate the right and left mower blades 90 degrees
until the end of the mower blade that was used to
level the mower deck is facing forward (Figure 8).
NOTE: The front blade cutting height should be 1/16 1/4 inch (1.59 - 6.35 mm) lower than the rear blade cutting height.
2. Measure from front edge of right and left mower
blades to the ground.
3. Subtract front blade cutting height measurement
from rear blade cutting height measurement.
4. Perform steps 5 through 7 if the front blade cutting
height is too high or too low on either side on either
side of mower deck.
5. Remove front lift link and front trunnion from mower
deck and mower lift (Figure 6).
• TO RAISE the mower deck, turn front trunnion
clockwise several turns.
• TO LOWER the mower deck, turn front trunnion
counterclockwise several turns.
6. Install front trunnion and front lift link on mower
deck and mower lift.
7. Check mower deck pitch.
• If mower deck pitch is not correct, repeat steps 2
through 6.
• If mower deck pitch is correct, the adjustment is
complete.
4.8 ADJUSTING ANTI-SCALP ROLLER
NOTE: The anti-scalp rollers are intended to prevent
lawn scalping, not to control cutting height. All antiscalp rollers should be set at the same height.
4 - 11
Page 13
See Figure 9 for anti-scalp locations on models
915067, 055, 057, 059, 501. See Figure 10 for antiscalp locations on model 915065 and 502.
There are two positions:
• Highest Position: Use to disable anti-scalp feature.
• Lowest Position: Use for all cutting positions.
In the lowest position the anti-scalp rollers will touch
the ground.
3
1
2
1. Anti-s calp Roller
2. Lowest Position
3. Highest Position
3
1
2
OE0038
Figure 9
4.9 HYDROSTATIC TRANSMISSION
NEUTRAL ADJUSTMENT
1. Shut off engine and engage the parking brake.
CAUTION: PREVENT personal injury!
ALWAYS MAKE CERTAIN that jack(s) or
blocks used are stable, strong and will
support the weight of the unit.
2. Position rear wheels off the ground. Be careful to
secure the unit to the lift or position the unit to face
a wall for safety. Disconnect the rods from the
handlebars to the linkage.
3. Pull the pin that holds the locking arm to the brake
rod then release the locking arm and disengage it
from the gear.
4. Engage seat switch and start the engine.The drive
wheels shou ld not be rot atin g. If t he whee ls are no t
driven to rotate, proceed to Steering Control
Neutral Adjustment.
To adjust the neutral setting for no wheel rotation
Model EZT 915065 and 502:
5. Use a hex wrench to loosen the locking bolt (Figure
11) until the linkage can be rotated by hand.
6. With the engine running and the drive wheels off
the ground, rotate the linkage in either direction.
The correct linkage position is when the wheel is
not being driven (under power).
7. Hold the linkage in place and tighten the locking
bolt.
8. Shut off engine and reconnect steering rods.
9. Reconne ct p a rk ing brak e pi n. Che ck p a rki ng brak e
linkage for proper movement.
1. Anti-scalp Roller
2. Lowest Position
3. Highest Position
3
2
Figure 10
1
OE0310
4 - 12
4
3
1. Locking Bolt
2. Steering R od
2
1
3. Pin
4. Locking Arm
Figure 11
Page 14
To adjust the neutral setting for no wheel rotation
Model IZT 915055, 057, 059, 067, 501:
1. Use a hex wrench to loosen the locking bolt (Figure
12).
2. With the engine running and the drive wheels off
the ground rotate the linkage in either direction.
The correct linkage position is when the wheel is
not being driven (under power).
3. Hold the linkage in place and tighten the locking
bolt.
4. Shut off engine.
5. To reconnect the steering rod it should be
positioned through the hole in the trunnion. Two
jam nuts are above and one nyloc nut is below the
trunnion.
6. Without moving the transmission linkage turn the
first jam nut towards the trunnion until it makes
contact.
7. The nyloc nut is turned toward the trunnion until
tight.
8. Move the second jam nut to contact the first jam
nut and tighten together.
9. Reconnect parking brake pin.
1
• The unit turns to the right or left when both steering
levers are pulled back as far rearward as possible.
NOTE: The side the unit turns toward indicates that the
wheel on that side is turning slower than the other
wheel. Either the wheel that is turning faster needs to
slow down or the wheel that is turning slower needs to
be sped up to allow the unit to travel in a straight line.
See steering section for illu strations.
1. Determine which way the unit turns.
2. Tip seat forward
NOTE: The forward travel adjustment bolt adjusts forward travel of the steering lever. The rear travel adjustment bolt adjusts the rearward travel of the steering
lever.
3. Adjust speed by:
• Turning adjustment bolt clockwise to decrease
steering lever travel.
• Turning adjustment bolt counterclockwise to
increase steering lever travel.
1
2
3
2
3
4
1. Locking Bolt
2. Steering Rod
3. Jam Nut
4. Nyloc Nut
Figure 12
4.10 ADJUSTING THE UNIT TO TRACK
STRAIGHT
Model EZT 915065, 502 with serial numbers above
10,000
(Figure 13)
IMPORTANT: The unit should track within 2 feet
(0.61 m) of a straight line for 30 feet (9.14 m).
The travel of the steering levers may need adjustment
if:
• The unit turns to the right or left when both steering
levers are pushed as far forward as possible.
1. Forward Travel Adjustment Belt
2. Rear Travel Adjustm en t Belt
3. Steering Lev er
OE0330
Figure 13
Model EZT 915065, 502 with serial numbers below
10,000:
1. Determine which way the unit turns.
2. Move handlebars to neutral position. Handlebars
should line-up with each other. To adjust handlebar
position; loosen mounting bolts, realign and tighten
bolts.
3. Locate the stop bolts for handlebar travel.
4. Make a length adjustment of the stop bolt to either
shorten the stroke of the handlebar on the outside
of the turn, or lengthen the stroke of the handlebar
on the inside of the turn.
Model IZT 915055, 057, 059, 067, 501 with serial
numbers below 10,000:
1. Determine which way the unit turns.
2. Adjust steering levers to match. Note each
steering lever can be positioned further forward or
further backward.
4 - 13
Page 15
• Move levers to neutral position.
• Loosen mounting hardware.
• Position steering levers.
• Tighten mounting hardware.
3. Adjust height of steering levers. There is a low and
a high position for steering levers.
• Remove mounting hardware and place
steering levers in the low or high position.
• Tighten mounting hardware.
The forward or backward full travel of the
steering levers is controlled by the position of
the dampener.
4. Locate the dampener. The mounting hole in the
frame should be slotted.
5. Slide adjustment bolt to the back of the machine to
speed the side up (inside of turn). Slide adjustment
bolt forward to slow down this side of the machine
(outside of turn).
6. Adjust as needed. The steering lever neutral
position may need adjustment.
Model IZT 915055, 057, 059, 067, 501 with serial
numbers above 10,000
IMPORTANT: The unit should track within 2 feet
(0.61 m) of a straight line for 30 feet (9.14 m).
The travel of the steering levers may need adjustment
if:
• The unit turns to the right or left when both steering
levers are pushed as far forward as possible.
• The unit turns to the right or left when both steering
levers are pulled back as far rearward as possible.
NOTE: The side the unit turns toward indicates that the
wheel on that side is turning slower than the other
wheel. Either the wheel that is turning faster needs to
slow down or the wheel that is turning slower needs to
be sped up to allow the unit to travel in a straight line.
See steering section for illustrations.
1. Determine which way the unit turns.
2. Tip seat forward
NOTE: The forward travel adjustment bolt adjusts forward travel of the steering lever. The rear travel adjustment bolt adjusts the rearward travel of the steering
lever.
3. Adjust speed by:
• Turning adjustment bolt clockwise to decrease
steering lever travel.
4. Turning adjustment bolt counterclockwise to
increase steering lever travel.
4.11 ADJUSTING THE PARKING BRAKE
When properly adjusted the parking brake will lock the
linkage on both drives and activate the safety switch
(Figure 14).
The drive units should be properly adjusted for neutral.
Engage the parking brake handle. The brake rod
should be positioned to lock the drive. The safety
switch should be disengaged.
To adjust the linkage:
Move the adjusting nut (Figure 15) clockwise/
counterclockwise as needed to properly position the
brake rod.
NOTE: The safety switch can be loosened for minor
adjustments.
2
1
1. Clip
2. Locking Gear
3. Locking Arm
3
Figure 14
2
1
3
3
1
1. Nylon Adjusting Nut
2. Double Pole Switch
3. Brake Rod
PE0832
Figure 15
4 - 14
Page 16
SECTION 5 - ENGINE
5.1 ENGINE TROUBLESHOOTING
The following troubleshooting chart is to be used to
isolate engine problems and give possible causes and
corrective action responses.
The troubleshooting key is generic and can be used for
several types of engines. Use only those possible
causes and corrective actions that apply to the
unit.
TROUBLE POSSIBLE CAUSES
(Refer to Key Below)
Black Exhaust 1, 20, 22, 25, 29, 31, 32, 33 repair or replace
Blue/White Exhaust 4, 20, 25, 31, 33, 34 repair or replace
Difficult Starting 1, 5, 7, 8, 9, 10, 20, 21, 22, 29, 31, 32, 33 repair or replace
Erratic Running 1, 7, 8, 9, 10, 20, 21, 23, 26, 29, 33, 59, 62 repair or replace
Excessive Fuel Consumption 1, 20, 22, 23, 25, 29, 31, 32, 33 repair or replace
Excessive Crankcase Pressure 25, 31, 33, 34, 45, 55 repair or replace
High Oil Pressure 4, 41 repair or replace
Knocking 22, 26, 29, 31, 33, 36, 46, 59 repair or replace
Loss of Power or System 1, 8, 10, 20, 21, 22, 23, 25, 26, 31, 32, 33 repair or replace
Low Cranking Power 2, 3, 4, 11 repair or replace
Low Oil Pressure 4, 36, 37, 39 repair or replace
Misfiring 10, 20, 25, 26, 28, 29, 32 repair or replace
Overheating 1, 19, 25, repair or replace
Poor Compression 25, 28, 29, 31, 32, 33, 34,59, repair or replace
Starts and Stops 1, 6, 10, 62 repair or replace
Vibration 20, 23, 25, 26, 29, 33, 45, 49 repair or replace
Will Not Crank 2, 11, 45 charge battery or replace
Will Not Start 1, 10, 62 repair or replace
CORRECTIVE ACTION
see electrical systems
see engine service manual
see electrical systems
see engine service manual
TROUBLESHOOTING KEY
1 Restriction in air cleaner 22 Incorrect grade of fuel 43 Faulty suction pipe
2 Bad electrical connection 23 Sticking throttle/restricted movement 44 Choked oil filter
3 Faulty starter motor 24 Exhaust pipe restriction 45 Bad solenoid switch
4 Incorrect grade of lubricating oil 25 Leaking cylinder head gasket 46 Incorrect piston height
5 Low cranking speed 26 Overheating 47 Damaged fan
6 Fuel tank empty 27 Cold running 48 Faulty engine mounting
7 Controls not in correct
operation position
8 Blocked fuel feed line 29 Sticking valves 50 Faulty thermostat
9 Faulty fuel lift pump 3 0 Incorrect high pressure pipes 51 Restriction in water jacket
10 Choked fuel filter 31 Worn cylinder bores 52 Loose fan belt
11 Battery capacity low 32 Pitted valves and seats 53 Choked radiator
12 Air in fuel system 33 Broken, worn or sticking piston ring(s) 54 Faulty water pump
13 Faulty fuel injection pump 34 Worn valve stems and guides 55 Choked breather pipe
14 Faulty fuel injectors or incorrect
type
15 Incorrect use of cold start
equipment
16 Faulty cold start equipment 37 Insufficient oil in sump 58 Blocked sump strainer
17 Broken fuel injection pump
drive
18 Incorrect fuel pump timing 39 Oil pump worn 60 Exhaust or vacuum pipe leak
19 Incorrect valve timing 40 Pressure relief valve sticking open 61 Bad or defective water temperature
20 Poor compression 41 Pressure relief valve sticking closed 62 Bad spark plug(s)
21 Blocked fuel tank vent 42 Broken relief valve spring
28 Incorrect tappet adjustment 49 Incorrectly aligned flywheel and/or
flywheel housing
35 Restriction in air cleaner 56 Damaged valve stem oil deflector (if
fitted)
36 Worn or damaged bearings 57 Coolant level too low
38 Bad/defective oil temperature switch 59 Broken valve spring
switch
5 - 15
Page 17
5.2 CHECKING ENGINE OIL
Check the engine oil daily prior to use.
IMPORTANT: Never operate the engine with the oil
below the low mark on the dipstick.
See the Engine Manual for oil specifications and oil
filter service instructions.
To check oil level:
1. Move the unit to level location.
2. Clean around the dipstick and filler tube to prevent
dirt from entering the engine.
3. Remove the dipstick and wipe off the oil on the
dipstick.
4. Put the dipstick back into the engine, tighten in
place, and remove again.
5. When the dip stic k is re moved , note the oi l lev el. Oi l
should be between the full and add mark.
6. Replace dipstick.
7. If required, add oil. Do not overfill.
8. Clean up any spillage that may have occurred.
5.3 CHANGING OIL
WARNING: Do NOT touch part s which are
hot. Allow parts to cool before servicing.
Engine muffler and other parts will be hot if unit has
been running.
1. Engine oil should be changed after the first five
hours of operation and every 25 hours there after.
2. Move the unit to a level and well ventilated area
and set the parking brake.
3. If the engine is cold, let the unit run for five
minutes.
4. When the engine is warm, stop the engine.
5. Clean the area around the dipstick and drain hose.
6. Put an open container that will hold one gallon of
oil under the drain hose.
7. Open the drain valve.
8. Allow the engine oil to drain completely into the
one gallon container. Remove container and
contents for future recycling as required.
9. Close the oil drain valve.
10.If used, remove the oil filter.
11.Clean the oil filter port and install a new oil filter
according to the instructions on the oil filter. Fill
with new oil to the "full" mark on the dipstick.
12.Start and run the engine for one minute. Stop the
engine and recheck the oil level and add as
necessary.
13.Check for leakage at the drain plug and oil filter if
used. Tighten the fittings as necessary if leakage
occurs.
14.Release the parking brake.
15.Return the unit into service.
5.4 CHECKING ENGINE COOLING
IMPORTANT: To prevent severe damage to the
engine, proper cooling will need to be maintained.
1. Check the air intake screen on the engine each
day.
2. The air intake screen must be kept clean. Remove
any grass, dirt, or debris that may have
accumulated.
3. Check the engine cooling yearly.
5.5 CLEANING THE AIR CLEANER
1. Check the air cleaner element every day.
2. Clean the air cleaner precleaner every 25 hours.
See your Engine Manual for instructions.
3. Apply oil and reinstall over the paper air filter
element.
4. Wipe out the air cleaner cover to remove any dirt
build up in the cover.
5. Reinstall the cover over the air cleaner prior to
operating the engine. See your Engine Manual.
5.6 CHANGING THE AIR CLEANER
ELEMENT
Replace the air cleaner element when clogged or every
100 hours. Do not attempt to clean. See your Engine
Manual for instructions.
5.7 INSPECT MUFFLER/SPARK
ARRESTER
Inspect muffler and (if equipped) spark arrester.
Replace muffler if corroded, as it could create a fire
hazard and/or damage.
5.8 REPLACE SPARK PLUGS
Spark plug type and gap setting are shown in
Specifications. See Engine Manual for detailed
instructions.
5.9 ENGINE REMOVAL
1. Remove deck.
2. Remove the hood.
3. Remove the negative cable from the battery.
4. Remove the main drive belt from the engine
sheave by releasing the idler tension spring.
5. Remove the throttle and choke control from the
engine.
6. Remove the electrical wiring from the engine
(charge lead, starter cable, fuel solenoid lead, and
magneto kill wire).
5 - 16
Page 18
7. Remove fuel line from engine first. Drain fuel from
line back into fuel tank.
8. Remove the electric clutch and the anti-rotation
bolt.
9. Remove the engine bolts.
10.Lift engine out of the unit and off the frame with a
hoist (engine).
11.Service, overhaul, or replace engine as required.
12.If replacing engine with a new engine, the following
items will have to be removed (if used) from the old
engine. These items will not be included with a new
engine:
• Engine sheave and key
• Mounting hardware
• Engine wiring harness.
5.10 ENGINE INSTALLATION
1. Check the engine base and unit frame for damage
before installing the engine.
2. Place the throttle and choke controls, fuel line, and
electrical wires out of the way prior to installing the
engine.
3. Once the engine is bolted onto the frame, install
the exhaust system and then tighten the mounting
hardware.
4. Install the engine sheave, belts, springs, electrical
wiring, throttle, and choke controls.
5. Install the negative battery cable onto the battery.
6. Install the fuel line.
7. Fill engine with 10-30 above 32°F (0°C) or 5W30
below 32°F (0°C).
8. Install the engine cover, then test operation and
function of the engine.
WARNING: AVOID EXHAUST FUMES! DO
NOT run engine in an enclosed area.
ALWAYS provide good ventilation and wait
until hazard has been removed.
9. Check the fluid levels as follows:
a) Start the engine and allow it to reach to
operating temperature. DO NOT operate
engine for more than two minutes.
b) Shut the engine off, wait for engine to cool, and
be sure the engine oil level is between the full
and add marks on the dipstick. If it is below the
add mark, add recommended oil. DO NOT
overfill.
5 - 17
Page 19
915501, 502
915065, 067
5.
915501, 502
915055, 057, 059
5.
5
1.
1
915501, 502
1. Oil Drain Tube
2. Oil Drain Valve
3. Idler Pulleys
4. Electric Clutch
5. Muffler
Rear of Unit
2.
2
3.
3
4
4.
3.
3
Figure 16
PE0760
5 - 18
Page 20
SECTION 6 - MOWER DECK
6.1 REPLACING PTO BELT
Remove (Figure 17)
1. Lower mower deck to the ground.
2. Remove belt covers from mower deck.
CAUTION: Use care when releasing idler
spring tension. Keep body parts well away
from idler when performing this operation.
3. Hook a puller into idler hole and pull idler arm
towards outside of unit until tension is removed
from PTO belt.
2
3
1
5
4
6
6.2 REPLACING MOWER BLADE
Remove (Figure 18)
CAUTION: Mower blades are sharp and can
cut you. Wrap the blades or wear gloves, and
use extra caution when servicing them
1. Block mower blades to prevent rotation.
2. Remove mounting hardware and mower blades
from mower deck.
Install (Figure 18)
1. Install mower blades on mower deck with mounting
hardware.
2. Torque 5/8-inch hex bolt to 80 to 120 lbf-ft (108 to
163 Nm).
1
3
2
7
1. Idler Spring
2. Electronic Clutch
3. PTO Belt
4. Idler Hole
5. Idler P ulley
6. Idler Arm
7. Belt Cover
OE0080
Figure 17
4. Remove PTO belt from left mower deck pulley.
5. Slowly release idler arm until tension is removed
from idler spring.
6. Remove PTO belt from mower deck and electric
clutch.
Install (Figure 17)
NOTE: Do not install PTO belt on left mower deck pul-
ley in step 1.
1. Inst all PTO belt on electric clutch and mower deck.
2. Hook a puller into idler hole and pull idler arm
towards outside of unit until PTO belt can be routed
around left mower deck pulley.
3. Slowly release idler arm until idler pulley rests
firmly against PTO belt.
4. Install belt covers on mower deck.
1
4
1. Flat Washer
2. Bevel Washer
3. 5/8-inch Hex Bolt
4. Mower Blade
OE0039
Figure 18
6.3 SHARPENING MOWER BLADE
CAUTION: DO NOT sharpen mower blade
while on unit. An unbalanced mower blade will
cause excessive vibration and eventual
damage to unit. Check mower blade balance
prior to reinstalling mower blades. NEVER
weld or straighten mower blades.
1. Remove mower blade from unit (see Replacing
Mower Blade).
Ariens recommends having mower blades sharpened
by a professional.
Discard mower blade if (Figure 19):
• More than 1/2 in. (1.27 cm) of metal is removed.
• The air lift erosion area is eroded.
• The mower blade is bent or broken.
6 - 19
Page 21
Do not change angle of cutting edge or round the
corner at the end of mower blade.
2. Sharpen mower blade by removing an equal
amount of material from each end of the mower
blade.
3. Check mower blade balance by sliding mower
blade on an unthreaded bolt. If blade is balanced, it
should remain in a horizontal position. If either end
of mower blade moves downward, sharpen the
heavy end until mower blade is balanced.
4. Install mower blade on unit (see Replacing Mower
Blade).
DO NOT Sharpen to this Pattern
Sharpen to this Pattern
DISCARD if
more than 1/2
in. (1.27 cm)
1. Air Lift Erosion Area
2. Cutting Edge
Figure 19
2
1
OE0052
6 - 20
Page 22
SECTION 7 - DRIVE TRAIN
7.1 HYDRO TRANSMISSION TROUBLESHOOTING
The following troubleshooting chart is to be used to
isolate hydro transmission problems and give possible
causes and corrective action responses.
The troubleshooting key is generic and can be used for
several types of transmissions. Use only those
possible causes and corrective actions that apply to the
unit.
TROUBLE POSSIBLE CAUSES
CORRECTIVE ACTION
(Refer to Key Below)
Axles Will Not Turn 1, 7, 8, 12, 16, 18, 28, 32, 38, 42 repair or replace
Difficult Starting 1, 6, 7, 8, 12, 16, 25, 26, 28, 38, 42 repair or replace
Erratic Running 1, 4, 6, 7, 8, 12, 18, 25, 26, 28, 42, 55 repair or replace
Jerky When Starting 1, 4, 7, 8, 12, 18, 28, 38
Jumps Out of Gear N/A repair or replace
Knocking 4, 8, 12, 18, 28, 37, 42 repair or replace
Loss of Power or System 4, 12, 18, 28, 37, 42
Noisy 4, 12, 18, 26, 28, 32, 37, 42 repair or replace
Oil Leakage 4, 22, 51, 16 repair or replace
Operates Hot 4, 16, 28, 32, 35, 42
Operates in One Direction Only 1, 8, 12, 30, 46
Pump Failure 4, 12, 37 repair or replace
Speed Loss Under Load 1, 6, 11, 28, 37, 51 repair or replace
Speed Loss Under Load 1, 4, 7, 12, 18, 28, 26 repair or replace
Will Not Drive 1, 7, 8, 18, 28, 37, 38, 48
Will Not Shift repair or replace
TROUBLESHOOTING KEY
1 Inspect control linkage 22 Inspect hoses and lines for wear 43 Burrs on gearing
2 Inspect acceleration valves 23 Inspect implement relief valve 44 Gears improperly installed
3 Inspect charge check valves 24 Ins pect charge pump 47 Shifting washer in backwards
4 Incorrect grade of lubricating oil 25 Bad transmission pump 48 Shifter/Brake shaft keyways damaged
5 Low cranking speed 26 Overheating 49 Unit clutch not disengaging
6 Controls not in correct operation
position
7 Belts are missing, to tight, loose or
glazed
8 Overload of vehicle 29 Check system pressure 52 Dowel pins not installed
9 Replacement parts damaged 30 Shift rod grooves worn 53 Differential bevel gears broken
10 Replacement parts improperly
installed
11 Improperly torqued attaching screws 32 Damaged cooling fan 55 Worn or stripped gear teeth
12 Air in hydraulic system 33 Inspect auxiliary relief valve
13 Broken shifter stop 34 Inspect cooling fan
14 Inspect charge check valves 35 Inspect transmission cooling fins
15 Inspect acceleration valves 36 Worn or damaged bearings
16 Check oil level-gear box sump or
reservoir
17 Inspect heat exchanger 38 Inspect for loosely mounted
18 Inspect by-pass valve 39 Steering column loose or binding
19 Inspect charge pressure 40 Pressure relief valve sticking open
20 Inspect inlet filter 41 Pressure relief sticking closed
21 Inspect charge relief valve 42 Broken relief valve spring
27 Cold running 50 Shifter stop assembled backwards
28 Bad transmission motor 51 Improper fit of case to cover
31 Reverse chain broken 54 Spring in shifter weak or broken
37 Metallic pieces or foreign objects in unit
components
7 - 21
Page 23
odel EZT 915065, 502
7.2 HYDRO-GEAR FLUID
2
2
RECOMMENDATIONS
The fluids used in Hydro-Gear transaxles have been
carefully selected, and only equivalent or better
products should be used.
Typically , an engine oil with a minimum rating of 55 sus
o
at 210
recommended. A 20W-50 engine oil has been selected
for use by the factory.
F and an API classification of SH/CD is
1
2
1. Dump Rod
2. Anchor Bolts
Figure 20
Model IZT 915055, 057, 059, 067, 501
1
3
2
PE0260
7.3 HYDRO-GEAR TRANSMISSION
REMOVAL
1. Place the unit on a flat surface and remove the
negative lead from the battery and the spark plug
lead from the spark plug.
2. Remove key and spark plug wire.
3. Raise and block the unit frame on jack stands
behind the transaxle in the frame.
4. Remove the rear wheels by removing the lug nuts
holding the wheels to the axle hub.
5. Release the transmission belt tension spring and
remove the transmission belt from the input sheave
on top of the transaxles.
6. Release the parking brake.
7. At the end of each brace rod (Figure 21) remove
the hairpin and pull the rods away from the
transmission.
8. At the end of each steering link, (Figure 20 and
Figure 21) remove the hairpin and pull the links
away from the transmission.
9. Remove the dump rod from the transmission.
10.Do not remove or loosen the hardware on the
transaxle sub-frame at this point.
11.Support the transaxles with a floor jack from the
rear of the tractor.
12.Remove the two right and left front anchor bolts
holding the transaxle to the tractor frame and
remove the two rear anchor bolts from the left and
right side holding the transaxle to the units frame
and lower jack.
13.With the transaxle assembly removed from the
units frame, place the axle assembly on a flat work
surface.
1. Dump Rod
2. Anchor Bolts
3. Axle Support Bracket
Figure 21
2
4
5
4. Axle Brace Rod
5. Axle Brace
Weldment
7 - 22
Page 24
7.4 REPLACING HYDROSTATIC BELT
Remove (Figure 22)
1
2
3
4
8
2
7
6
1. Hydrostatic Belt
2. Hydrostatic
Transmission Pulley
3. Electric Clutch
Connector
4. Pulley
5. Clutch Stop
6. Electric Clutch
7. Idler
8. Idler Spring
Figure 22
1. Remove PTO belt (see Replacing PTO Belt).
2. Disconnect electric clutch connector.
3. Remove clutch stop.
CAUTION: Use care when releasing idler
spring tension. Keep body parts well away
from idler when performing this operation.
5
OE0320
4. Disconnect idler spring.
5. Remove hydrostatic belt from hydrostatic
transmission pulleys, pulley, electric clutch, and
idler.
Install (Figure 22)
1. Install hydrostatic belt on idler, electric clutch,
pulley, and hydrostatic transmission pulleys.
2. Connect idler spring.
3. Install clutch stop.
4. Connect electric clutch connector.
5. Install PTO belt (see Replacing PTO Belt).
7 - 23
Page 25
SECTION 8 - LIFT SYSTEM
8.1 LIFT SYSTEM
Refer to Figure 25 for the lift system.
The mower pan lift system is a manual lift system
controlled by the operator.
Mower Lift Pedal
Raises and lowers mower deck, Figure 23
2
1. Adjustment Pin
2. Mower Lift Pedal
3. Adjustment Hole
1
Figure 23
NOTE: The adjustment pin is used to set the height of
the mower deck. See Specifications for cutting height
dimensions.
3
OE0051
2
1
3
2
2
1. Lift Rod
2. Lift Weldment
3. Retaining Ring
1
2
4
4. Nyloc Flange Nut
PE0220
Figure 25
765 4 3 2 1
05304900
OE0090
Figure 24
Press mower lift pedal and install adjustment pin in the
desired adjustment hole.
8.2 LIFT SYSTEM REMOVAL
Remove the mower deck from the unit prior to lift
system removal.
The lift system is held in place with retaining rings and
a nyloc nut (Figure 25).
To remove the lift system components:
1. Remove the pins that hold the lift rods to the
elements.
2. Remove th e ret ai ning r ing s on the rear w eldm ent s.
Remove the weldments.
3. Unscrew the flange nut and remove the two front
weldments.
Inspect all the bushings for wear and replace as
needed.
Lubricate all pivot points with a high quality grease and
reassemble.
8 - 24
Page 26
SECTION 9 - STEERING
9.1 STEERING CONTROLS
Serial numbers 10,000 and above:
Refer to Figure 26 thru Figure 27 for Steering.
The steering controls should remain in the neutral
position unless moved by the operator. When in the
neutral position the brake rod will lock the
transmissions to prevent movement.
When the handlebars are moved the link will shift the
transmissi ons into for ward or reverse.
The steering mechanism can be taken apart for
inspection and lubrication.
To remove the weldments:
1. Remove the link to the transmission.
2. Remove the handlebar and control arm.
3. Unscrew the flange nut that holds the weldment
onto the spacer and bearing.
4. Remove remaining hardware and slide weldment
off.
Inspect spacers bearings and pivot points for wear.
Repair or replace all worn parts. Lubricate with a high
quality grease and reassemble.
Model EZT 915065 and 502 with Serial Numbers Above 10,000
2
2
4
1
5
6
1
4
3
5
1. Link
2. Brake Rod
3. Eccentric
7
4. Weldment
5. Flange Nut
6. Handle Bar
7. Control Arm
PE0172
Figure 26
9 - 25
Page 27
Model IZT 915055, 057, 059, 067, 501 with Serial Numbers Above 10,000
1
2
4
2
1
4
6
3
5
5
Serial numbers below 10,000:
Refer to Figure 28 and Figure 30 for Steering.
The steering controls will swing outward when in
neutral. In the outward position, each handlebar will
contact a switch. The switches must be engaged to
start the engine.
When the handlebars are moved inward and forward
the link will shift the transmissions forward.
The steering mechanism can be taken apart for
inspection and lubrication.
Figure 27
To remove the weldments:
Inspect spacers bearings and pivot points for wear.
Repair or replace all worn parts. Lubricate with a high
quality grease and reassemble.
7
1. Link
2. Brake Rod
3. Eccentric
4. Weldment
5. Flange Nut
6. Handle Bar
7. Control Arm
PE0840
1. Remove the roll pin that holds the weldment on the
rod.
2. Remove the link to the transmission.
3. Remove the link to the parking brake locking arm.
4. Slide the weldment off.
9 - 26
Page 28
Model EZT 915065 and 502 with Serial Numbers Below 10,000
1
3
6
2
4
1
5
2
3
1. Transaxle Link
2. Rod Pivot
3. Steering Switch
4. Dampener
5. Handlebar
6. Roll Pin
PE0170
Figure 28
9 - 27
Page 29
Model IZT 915055, 057, 059, 067, 501 with Serial Numbers Below 10,000
2
7
1
3
2
6
1
3
5
4
Figure 29
1. Rod Transaxle
2. Switch
3. Jam Nuts
4. Nyloc Jam Nut
5. Handlebar
6. Dampener
7. Roll Pin
PE0172
9 - 28
Page 30
9.2
ADJUSTING STEERING LEVER
HEIGHT FOR SERIAL NUMBERS ABOVE
10,000 ONLY
(Figure 30)
1
2
5
3
4
1. Handlebar
2. Steering Lev er
3. Mounting Hardware
4. Adjustment Holes
5. Eccentric Spacer
OE0046
Figure 30
NOTE: Perform steps 1 and 2 for both steering levers.
1. Remove mounting hardware and move hand le bar
up or down until the steering levers are at the
appropriate height.
2. Install mounting hardware.
NOTE: Align handlebars by adjusting eccentric spacer
until the height of handlebars are the same.
Models with serial numbers below 10,000 have a
series of holes that line up to insert bolts with nuts.
Choose the combination that is most appropriate.
9 - 29
Page 31
SECTION 10 - FUEL SYSTEM
10.1 FUEL SYSTEM TROUBLESHOOTING
The following troubleshooting chart is to be used to
isolate fuel system problems and give possible causes
are corrective action responses
TROUBLE POSSIBLE CAUSES
The troubleshooting key is generic and can be used for
several types of transmissions. Use only those
possible causes and corrective actions that apply to the
unit.
CORRECTIVE ACTION
(Refer to Key Below)
Hard Starting 1, 3, 4, 6, 11, 12, 14, 16, 17, 18 clean, repair or replace
Fuel Leak at Carburetor 5, 7, 17 repair or replace
Engine Floods 5, 15, 17 repair or replace
Will not idle 1, 2, 3, 6 repair or replace
Rich idle 1, 6, 14 repair or replace
idles with Needle Closed 14 repair or replace
Hunts Erratic Idle 2, 3, 6, 7, 12, 13, 14, 15, 18 repair or replace
Idles Fast Lean 2, 3, 7 repair or replace
Will Not Accelerate 1, 6, 11, 12, 14, 15, 16 repair or replace
Over Rich Acceleration 1, 15 repair or replace
Hesitates 2, 6, 11, 12, 16 repair or replace
Will Not Run at High Speed 1, 11, 12, 14, 16 repair or replace
Low Power 1, 3, 11, 14, 15, 16, 17, 18 repair or replace
Hunts at High Speed 3, 6, 7, 12, 14, 15, 16, 18 repair or replace
Runs With Needle Closed 14 repair or replace
Engine Overspeeds 2, 3, 7, 14 repair or replace
1 Plugged Air Filter
2 Leaky Carburetor Gasket
3 Throttle or Choke Shaft Worn
4 Choke Not Functioning
Properly
5 Plugged Atmospheric Vent
6 Air Bleed Restricted
7 Damaged or Leaky "O" Rings
8 Damaged Diaphragm
9 Stuck or Dirty Ball Check
10 Diaphragm Upside Down
11 Plugged T ank or Vent
12 Fuel Pick-up Restricted
13 Idler Port Restricted
14 Damaged Adjustment Needle
and Seat
15 Incorrect Float Height
16 Main Nozzle Restricted
17 Dirty, Stuck Needle and Seat
18 Fuel Inlet Plugged
TROUBLESHOOTING KEY
10 - 30
Page 32
10.2 FUEL PUMP
The impulse style fuel pump is the most commonly
used fuel pump. Impulse fuel pumps may either be
mounted externally onto the carburetor fuel inlet or
remotely mounted. These pumps are connected in the
fuel line between the fuel supply and the carburetor or
directly to the fuel inlet.
Impulse fuel pumps are operated by crankcase
impulses created by the up and down movement of the
piston. A hose called a pulse line connects the fuel
pump diaphragm chamber and transmits the impulses
to the pump diaphragm. The impulses actuate the
diaphragm and the flap valves to lift the fuel from the
fuel tank to the carburetor.
10.3 FUEL SYSTEM CONTAMINATION
Any time fuel contamination is found in the fuel system
(dirt, water algae, etc.) replace the fuel, fuel filter and
flush the fuel lines. Remove the carburetor bowl and
clean. Replace all items that cannot be cleaned.
Reassemble the fuel syst em and check for proper
operation.
10.4 FUEL TANK
The fuel tank is made of composite material for long life
without breaking down from the additive used in
today’s blended fuels.
3
1. Fuel Tank Right Hand
2. Fuel Tank Left Hand
3. Fuel Valve
1
Figure 31
10.5 FUEL TANK REMOVAL
To remove the gas tanks (Figure 31):
1. Disconnect the negative terminal from the battery.
2. Lift the sea t to ga in ac cess to the mo unt ing screw s.
3. Turn off the fuel valve. Drain the fuel from both
tanks.
WARNING: Fuel vapors are explosive and
flammable. Keep fuel in proper containers and
clean up any spills immediately . Handle fuel in
well ventilated areas.
2
PE0820
4. Remove gas line from tank.
5. Remove the console from each tank.
6. Unscrew bolt from bottom of tank.
Each gas tank has a top bolt that rests in a slot.
This bolt does not need to be removed.
7. Loosen the top bolt and slide the tank up to
remove.
Assemble in reverse order.
10 - 31
Page 33
SECTION 11 - ELECTRICAL
11.1 TOOLS
There are some specialized tools and test equipment
that are needed for electrical repair work. A brief
description of these follows.
Long or needle nose pliers - used to connect or bend
wires and connectors in close quarters.
Diagonal cutters - used to cut wires or trim connections.
Wire stripper/crimping tool - available separately or
as a combination tool. Used to strip insulation from
wires of various sizes, crimp terminals and connector
or wires.
Soldering gun or soldering iron - used to solder all
splices and connections to terminals, connector, etc. A
soldering gun is faster and more convenient that waiting for a soldering iron to heat.
Multimeter - analog or digital, t o measure voltage,
amperage and ohms.
T achometer - used to measure engine speed.
Required to properly test alternator and charging circuits where output is dependent upon engine speed.
Heat gun - used to shrink insulated tubing in place.
Used to replace electrical tape or insulated sleeving. T o
use, place a piece of shrink tubing over a wire joint,
heat with the heat gun, until it shrinks slightly around
the joint.
Supplies - elect ric al tape, rosin core sol der (ne v er use
acid or acid core solder on electrical joints), an assortment of various size terminals, connectors, insulated or
heat shrink tubing (for use on joints and connections),
and an assortment of automotive type wire (in several
colors).
Ariens Company recommends that all work be done in
a professional manner. The use of the tubing to cover
joints and the soldering of connections contribute to a
professional looking job. In addition to a pleasing
appearance, repairs made in this manner are more
likely to withstand vibration. (The weakest points in an
electrical system are the joints where wires are
attached.)
Replace all defective components with Ariens replacement parts only. Engine parts, such as rectifiers or
alternator components should be secured through the
nearest engine service center.
Ariens Company does not recommend attempting to
repair electrical components. Most do not lend themselves to repair and you would have more money
invested in "time of repair" than the part would cost and
the results may not be as good.
11.2 ELECTRICAL MEASUREMENTS
In many electrical circuits, there is some visible effect
which indicates that the circuit is functioning properly. A
switch is turned "ON" and a lamp lights. A key is
turned, a starter motor runs and cranks the engine.
If the lamp does not light, or the starter motor does not
run, some means of measuring voltage, current flow,
resistance and continuity is needed, (continuity means
there is a complete electrical path through the circuit or
component.)
To know exactly what conditions exist in an electrical
circuit requires AC and DC voltmeter, AC and DC
ammeter, and an ohmmeter.
Multimeter
A single combination meter that does all of these things
is available. Such a meter is called a multimeter or voltohm-multitester (VOM). Meters of this kind are available in many forms and all change functions and
ranges with switches, or by plugging test leads into different jacks. Multimeters are available in two basic
types, analog and digital.
Analog Meters
Analog Meters have a needle that moves across a
scale to give a reading. The longer the scale, the easier
it is to read and more accurate the reading will be. A
jeweled movement is used in this type of meter is more
likely to be damaged through rough handling (except
for overloaded protected meters) or by measuring high
values that exceed the range set on the meter than a
digital meter. They provide excellent service for the
money as long as they are used with care.
Digital Meters
Digital Meters do not have a movement and are therefore more rugged. The reading shows up directly on a
display window of some type. Since they read direct,
no skill in reading the scale is required, nor is it necessary to set the range. The meter switches the ranges
automatically. One has only to select the function DC
volts, AC ampere, ohms, etc.,) connect the test leads,
and the reading is shown on the display. Because of
the internal circuitry and the lack of a movement, these
meters are not likely to be damaged by overloads.
In the discussions that follow, either type of meter may
be used. Test procedures are the same. It is best to
learn proper procedures, even though some meters
may be more forgiving of mistakes. Where differences
in use may occur, they will be covered in the discussion.
11 - 32
Page 34
Voltage Measurement
There are two basic rules to be remembered when
using a voltmeter. A voltmeter measures the voltage
difference between the test leads and the voltmeter is
always connected across the circuit under test.
Current Measurement
The two rules to remember when measuring current
with an ammeter are; an ammeter measures the current that flows through the meter, and to measure current an ammeter must be connected into the circuit.
The latter rule means that the circuit must be opened,
and the ammeter wired into it. Because this procedure
is usually difficult, an ammeter is seldom used for troubleshooting.
Resistance Measurement
An Ohmmeter is used to make resistance measurements and to check continuity through wires and electrical components.
There is one rule to keep in mind when using an ohmmeter. The ohmmeter has a self contained battery and
requires no electrical power. Using the ohmmeter on a
circuit that has power applied may result in damage to
the meter.
IMPORTANT: Disconnect the equipment battery when
making Ohmmeter test or damage to the Ohmmeter
may result.
IMPORTANT: An ohmmeter reads the resistance of
whatever component is connected between the test
leads. It can be used to check wires, coils, light bulbs,
or any item that conducts current.
2. Connect positive (+) cable first, then negative (-)
cable.
3. Apply petroleum jelly or dielectric grease to battery
cable ends and terminals.
4. Tip seat back.
Cleaning Battery and Battery Cables
1. Tip seat forward.
2. Disconnect negative (-) cable first, then positive (+)
cable.
3. Clean battery cable ends, negative (-) terminal,
and positive (+) terminal with a wire brush and
rinse with a weak baking soda solution.
4. Connect positive (+) cable first, then negative (-)
cable.
5. Apply petroleum jelly or dielectric grease to battery
cable ends and terminals.
6. Tip seat back.
1
5
6
4
3
2
11.3 BATTERY
NOTE: Unit comes equipped with a maintenance-free
battery that requires no regular maintenance except
cleaning the terminals.
WARNING: Battery posts, terminals and
related accessorie s con tain lead and lead
compounds, chemicals known to the State of
California to cause cancer and reproductive
harm. Wash hands after handling.
Battery Removal and Installation
Remove (Figure 32)
1. Tip seat forward.
2. Disconnect negative (-) cable first, then positive (+)
cable.
3. Remove battery hold-down bracket and battery
from unit.
Install
1. Install battery on the unit with battery hold-down
bracket.
1. Battery Hold-Down
Bracket
2. Negative (-) Cable
3. Negative (-) Terminal
4. Battery
5. Positive (+) Terminal
6. Positive (+) Cable
OE0120
Figure 32
Charging The Battery
WARNING: FROZEN BATTERIES CAN
EXPLODE and result in death or serious
injury. DO NOT charge a frozen battery. Let
the battery thaw before charging.
Follow First Aid directions for contact with battery fluid.
• External Contact: Flush with water.
• Eyes: Flush with water for at least 15 minutes and
get medical attention immediately!
• Internal Contact: Drink large quantities of water.
Follow with Milk of Magnesia, beaten egg or
vegetable oil. Get medical attention immediately!
• In case of internal contact, DO NOT induce
vomiting!
IMPORTANT: DO NOT fast charge. Charging at a high
rate will damage or destroy battery.
11 - 33
Page 35
IMPORTANT: ALWAYS follow information provided on
battery and battery charger. Contact battery and
battery cha rger manufacturers for detailed instructions.
1. Remove battery from unit (see Battery Removal
and Installation).
2. Place battery in a well-ventilated area.
3. Connect positive (+) lead of charger to positive (+)
terminal, and negative (-) lead of charger to
negative (-) terminal.
4. Charge battery according to battery charger and
battery manufacturers’ instructions.
5. Install battery on unit (see Battery Removal and
Installation).
Jump-Starting
Ariens does not recommend jump-starting your unit.
Jump-starting can damage engine and electrical
system components. See your Engine Manual for more
detailed information.
11.4 SWITCHES
Switches either open a circuit to stop current flow or
close and allow current to flow through.
A normally open (N.O.) switch prevents current flow
until the switch is actuated, completing the circuit and
allowing current to flow through it. An example is a light
switch - the lights are off until the switch is actuated
and the lights go on.
A normally closed (N.C.) switch allows current to flow
until the switch is actuated, breaking the circuit and
stopping current flow through it. An example is an
ignition switch that grounds the magneto when in the
off position (completing the circuit) but opens the circuit
when in the ON position allowing the engine to operate.
Switches are selected with regard to Current rating
(contacts must be of sufficient size to carry the required
current), Voltage rating (switches insulated for specific
voltages), Case or housing (switches that are exposed
to moisture and must be sealed to prevent moisture
from entering), and Actuating type (push, pull, rotary,
momentary contact, or micro switches).
NOTE: Check that the connections to the switches are
secure and that a switch is being activated properly
before performing electrical test on switches. (Safety
switches on speed selector and clutch levers may be
out of adjustment and not activating.)
IMPORTANT: When checking switches, remove them
from their respective circuit by disconnecting the wires
from the switch at the connector(s). Damage could
result to the meter or machine components if switches
are left in.
resistance). Activate the switch. The ohmmeter should
read up scale to zero resistance (Close Circuit). This
indicates the switch is operating properly. Also check
from each terminal to the switch case (if case is metal).
Reading should show infinite resistance indicating no
short to ground.
Variation from test results described indicates a
defective switch.
Normally Closed Switch
T o test a normally closed switch connect the ohmmeter
across the switch terminals. Meter should indicate a
closed circuit (z ero resist ance) . Activat e the switc h and
the meter should move to open circuit (infinite
resistance). Check from each terminal to ground
(switch case). Meter should show open circuit (infinite
resistance).
Variation from test results described indicates a
defective switch.
Ignition Switch
NOTE: Refer to the wiring diagram of the unit involved
to determine switch functions and test using the methods described.
The ignition switch incorporates a number of functions,
although not all functions are used on all equipment.
The switch has four positions: OFF, RUN with Lights,
RUN, and a momentary contact START position. Use
an ohmmeter to check the continuity of the switch in
each position.
Normally Open Switch
To test a normally open switch (key, headlight, safety,
or seat) connect the ohmmeter across the switch
terminals. Meter should indicate open circuit (infinite
11 - 34
Page 36
11.5 SOLENOID AND RELAYS
Solenoid and relays are both magnetically operated
devices. Both devices operate on the principle that
passing a current of electricity through a coil of wire will
create a magnetic field strong enough to attract a piece
of iron or steel. Each device uses this principle in a
slightly different manner.
Relay - A basic relay consists of a coil of wire wound
around a soft iron (magnetic) core. When current is
passed through the coil, the core is magnetized and
pulls down on a magnetic lever. The lever in turn is
attached to several switch contacts which open or
close other electrical circuits. In this fashion, a small
current can control one or more larger electrical
currents and actuate several other devices. In most
cases a relay contact moves only a fraction of an inch
and the magnetic pull is small.
Solenoid - A basic solenoid consists of a coil of wire
wound around a hollow tube. A magnetic core slides
inside the tube. When current is passed through the
coil, the core is pulled into the solenoid with
considerable force. With proper design, a solenoid can
exert considerable force over a distance o f several
inches. A solenoid can therefore pull a lever, close a
heavy contact, or perform other jobs that requir e a
straight line pull.
If a relay or solenoid fails to operate, the cause may be
either electrical or mechanical.
To check electrically, connect a voltmeter across the
coil of the device and activate the circuit that operates
the relay or solenoid. If the meter indicates no voltage
is applied, the cause is in the control circuit.
If the meter indicates proper voltage across the coil but
the device does not function, remove the power,
disconnect the wiring and check the continuity of the
coil with an ohmmeter. The meter should indicate
resistance, in the order of 3 to 5 ohms, if the coil is
intact. A high resistance indicates an open coil and a
defective device.
There are also a number of mechanical problems that
may cause the problem.
The starter solenoid in the Ariens equipment is a
sealed unit used to actuate the starter motor on the
engines. These solenoids may have three or four
connections. The two large connections carry high
current to operate the starter motor. The small
connections are connected to the coil and carry the
control current.
To check the solenoid, disconnect the cables to the
starter motor, turn the ignition switch to the start
position, and listen for the solenoid to snap inside
contacts closed.
If no snap is heard, check across the coils with a
voltmeter. The voltage should read 12 volts with the
ignition switch in the start position. If no voltage
appears, the defect is in the s tart circuit.
If the voltage is correct, turn off the power and check
continuity of the coil with an ohmmeter. If the coil is
open, the solenoid is defective and must be replaced.
If the coil has the proper voltage applied, and the
continuity check indicates the coil is intact, the solenoid
plunger is stuck or the contacts are welded shut and
the solenoid must be replaced.
If the solenoid snaps shut, but the starter does not
operate, check across the large contacts with an
ohmmeter. If there is no continuity when the solenoid
snaps shut, the contacts are defective and the solenoid
must be replaced.
11.6 LIGHTING CIRCUITS
Lighting circuits are simple circuits and easiest to
trouble shoot in most equipment. They consist of the
lights connected in parallel; a normally open switch, a
protective fuse and a source of power (battery or
engine alternator).
If only one light is out, check the connector, apply
12VDC to connectors to determine if bulb works.
If all the lights are out, check the fuse for continuity
(high resistance indicates a defective or blown fuse).
Refer to Fuses. If the fuse is blown, check for a short in
the wiring and correct before replacing the fuse.
If the fuse and lamps are good, check the circuit with
an AC/DC voltmeter.
11.7 FUSES
Fuses are connected in electrical circuits to protect the
circuits from damage due to overload or short circuits.
Fuses are a "weak link" in the circuit. They contain a
metal link designed to melt when a certain current
value is exceeded thus opening or disconnecting the
wiring. Once a fuse blows or melts it must be discarded
and replaced with a new fuse of the same value.
Since the function of the fuse is to protect the circuit,
NEVER attempt to defect the protective device by
bridging or replacing with a device of a higher current
rating.
Electrical testing of these devices is simple. Since the
device either conducts current (and is therefore
functioning) or the device is open and is therefore
defective. Use an ohmmeter to check for continuity.
11.8 DIODES AND RECTIFIERS
Diodes are solid state, semiconductor devices. They
contain no moving parts and conduct current better in
one direction than the other.
Diodes allow current to flow through one circuit without
"backing up" into another. In engine alternator circuits,
a diode is used to convert current which flows back and
forth (AC) in a circuit to current which flows only in one
direction (DC). A device which converts alternating
11 - 35
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current to a direct current is called a RECTIFIER. A
diode is one type of rectifier.
To check a diode, isolate if from the circuit by
disconnecting one end. With a multitester set on the
lowest ohms scale setting, measure the resistance in
one direction, reverse the test leads, and measure in
the other direction. Readings should be high in one
direction and low in the other. (If the readings are low in
both directions, the diode is shorted, and if the
readings are high, the diode is open.) If the readings
are the same in both directions, the diode is defective
and must be replaced.
IMPORTANT: Diodes are marked to indicate polarity (a
band on one end, an arrow on the side, or they fit on a
holder only one way.
Rectifiers
A battery is charged through the use of an alternator
located in or on the engine. A charging circuit contains
a rectifier because alternators produce alternating
current (AC) and batteries require direct current (DC)
for charging.
The rectifier may be built into the engine or it may be
an external part. It may also contain a regulator to
prevent overcharging the battery. (Servicing of
rectifiers built into the engine should be done by an
approved engine manufacturer’s service center. Such
a service center has access to the information and
parts required to test and repair or replace engine
components, including rectifiers and regulators.)
Units that contain both a rectifier and regulator are
tested in a working circuit to make sure the regulator
portion of the device is operating.
11.9 ELECTRIC CLUTCH
The electric clutch is used to turn on and off the
attachment used on the unit by use of a switch. The
clutch is also de sign ed so that a br ak e is appli ed t o the
output shaft when the clutch is disengaged (off).
The field coil is mounted to a bearing support and does
not rotate. The rotor is attached to the power output
shaft and rotates around the field assembly. The
armature i s att ached to the ou tput pulle y. The armature
assembly is held close to the rotor by the brake
assembly. The clutch is engaged by applying current to
the coil connection. This results in a current flowing
through the coil, magnetizing the coil pulling the
armature onto the rotor with sufficient force to hold the
two pieces together, effectively connecting the output
and the input shafts together. Pulling the armature
against the rotor pulls it away from the brake, releasing
the brake.
Engine Electrical Components
Engine servicing and repair should be referred to local
engine manufactures service centers that have the
service information and parts available to properly
service the engine. Ariens dealers should be able to
test engines and engine components to pinpoint
troubles and narrow them down to properly advise the
engine serviceman.
IMPORTANT: Check the serial number on the unit. The
serial number will indicate which of the following
sections apply.
11.10 ELECTRICAL FOR SERIAL
NUMBERS ABOVE 10,000
Safety Interlock System
WARNING: Safety Interlock failure and improper
operation of unit can result in death or serious injury.
Check system before each use to make sure it is
functioning properly.
Perform the following tests to ensure the safety
interlock system is working properly.
Test Steering Lever PTO Engine
1 Neutral Position Off Starts
2 N eut ral Pos itio n On Doesn’t Start
4*+ Out of Neutral Position Off Shuts Off
5*+ Neutral Position On Shuts Off
* Test with engine running.
+ Operator lifts off seat.
Initial check out: Make sure that all switches are in their
proper position for starting: (A) PTO off. (B) transaxle in
neutral position. (C) operator on the seat. If there is no
battery voltage to start the engine, use the following
steps to determine the problem.
STEP 1
Check out the battery. Use a voltmeter to check for
proper voltage. Replace the battery if necessary and/or
charge to proper level. Refer to Battery.
STEP 2
Use a voltmeter to make sure you have battery voltage
to terminal B on the back side of the ignition switch in
the off position. If you don’t have battery voltage to
terminal B check the battery connection and the fuse in
the red lead.
STEP 3
With the ignition switch in the "run" posit ion , check to
see if the battery voltage is being transferred from
terminal B to terminal L. Terminal L on the ignition
switch supplies battery voltage to the back of the PTO
switch on the purple lead and on to the neutral switch
on the red/green lead. Then to terminal 86 on the start
relay.
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For models with serial numbers above 10,000 when
the ignition switch is in the run position and with the
steering switch in the neutral (engaged), position
power is supplied to terminal 86 of the start relay and to
terminal 30 of the PTO relay. Engaging the seat switch
starts the hour meter and energizes the start relay. The
start relay when energized provides a ground to the
PTO relay. Now engaging the PTO switch will engage
the PTO clutch.
STEP 4
With ignition switch in the start position, battery voltage
is transferred from terminal B to S. T erminal S transfers
battery voltage through the PTO switch (disengaged)
the neutral switch (engaged) and to the starter solenoid
relay which powers the starter solen oid .
PTO clutch check out: Remove the wiring harness PTO
clutch leads from the clutch. With a multimeter check
the clutch coil for resistance to see if the coil is good.
The clutch used should have a coil resistance
according to the table below. If the coil is bad there will
be no resistance or it will be higher.
Part Number Ohms (± 5%)
Ignition switch check out: Battery voltage check in the
"off" position, check for voltage at terminal B. It should
not be present on terminals A, S, L.
With the ignition switch in the "run/light" position, check
for battery voltage at terminal B, A, L, Y. It should not
be present at terminal S.
With the ignition switch in the "run" posit ion , check for
battery voltage at terminals B and L.
With the ignition switch in the "start" position, check for
battery voltage at terminals B, L, S.
PTO switch check out: The PTO switch is a push/pull
switch with normal open and closed contacts. Power
transfer should be checked with a voltmeter. The
switch contacts should be checked with an ohm meter
with the wire harness plug removed. The light switch is
similar to the PTO switch with only one set of contacts.
Diode check out: Diodes are checked with an ohm
meter set on the diode check, and should only pass
voltage in one direction. If it passes voltage in both
directions or not at all the diode is bad and needs to be
replaced.
00191700 2 .84
03643100 3 .68
04915400 2 .45
Measurements For Models With Serial Numbers Above 10,000
Key Switch Off Run Start
B 11.50-13.00 Volts 11.50-13.00 Volts 11.50-13.00 Volts
A 11.50-13.00 Volts 11.50-13.00 Volts
S 11.50-13.00 Volts
L 11.50-13.00 Volts 11.50-13.00 Volts
Contact resistance is 0.1-0.3 ohms when correct.
Seat Switch Off Run Start
Red/Yellow Connected to Ground through test switch
Black Connected to Ground
Normally open contacts manually activated. contact
resistance is 0.1-0.3 ohms when correct.
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PTO Switch Off Run Start
Brown 11.50-13.00 Volts
Purple 11.50-13.00 Volts 11.50-13.00 Volts
Red/Green 11.50-13.00 Volts 11.50-13.00 Volts
Brown/Yellow 11.50-13.00 Volts
2 sets of contacts, one normally open, one normally closed. Contact resistance is 0.1-0.3 ohms when correct.
Neutral Switch Off Run Start
Brown/Yellow 11.50-13.00 Volts
Red/Green 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. Contact
Resistance is 0.1-0.3 ohms when correct.
PTO Relay Off Run Start
Green/White 86 11.50-13.00 Volts(A) 11.50-13.00 Volts(A)
Black/White 85 Connected to ground when start relay
energized
Purple/White 87 11.50-13.00 Volts 11.50-13.00 Volts
87A Not Used Not Used
Purple 30 11.50-13.00 Volts 11.50-13.00 Volts
Pins 85-86 coil resistance 87-100 ohms. pins 30-87 normally open. Pins 30-87A normally open. Contact resistance
is 0.1-0.3 ohms when correct.
(A) When PTO switch is on.
Start Relay Off Run St a rt
Red/Yellow 86 11.50-13.00 Volts(A) 1 1.50-13.00 Volts(A)
Black 85 Connected to Ground
Black/White 87
White/Black 87A Connected to Ignition Module
Black 30 Connected to Ground
Pins 85-86 coil resistance 87-100 ohms. pins 30-87 normally open. Pins 30-87A normally closed. Contact
resistance is 0.1-0.3 ohms when correct.
(A) With neutral switch engaged and PTO switch off.
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Starter Solenoid Relay Off Run Start
Brown/Yellow 86 1 1.50 -13 .00 Volts
Small Black 85 Connected to Ground
Large Red (Battery) 30 11.50-13.00 Volts 11.50-13.00 Volts 11.50 -13 .00 Volts
Brown/White 11.50-13.00 Volts
Normally open contacts (big terminals) coil resistance 3.0-5.0 ohms. Contact resistance is 0.1-0.3 ohms when
correct. Electrically activated.
PTO Clutch Off Run Start
Purple/white
Black Connected To Ground
Coil Resistance check clutch specifications.
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11.11 ELECTRICAL SYSTEM
Model 915055, 057, 059, 065, 067, 501, 502 for Serial Numbers above 10,000
2
1
3
4
5
6
1. Relay
2. Clutch Switch
3. Hour Meter
4. Key Switch
5. Switch NO
6. Switch, Double Pole NO/NO
To Engine
To Engine
Figure 33
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11.12 WIRING DIAGRAMS
Model 915055, 057, 059, 065, 067, 501, 502 for Serial Numbers Above 10,000
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11.13 CONTINUITY DIAGRAM
For Serial Numbers Above 10,000
The diagrams below show the various states of connection for electrical components.
The solid lines on switches show continuity.
NOTE: All switches are viewed from the rear.
Key Switch
PTO Switch
Disengaged
(down position)
Seat Switch
3
417
Off Run / Light Run
9
3
417
Disengaged
(down position) Not Energized Energized
Relay
9
Parking Brake Switch
86
87A
30
87
85
Start
87
86
85
87A
30
Operator
Off Seat
Solenoid
12 12
On Seat
Neutral Switch
Button Out Button InOperator
Not Energized Energized Button Out Button In
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11.14 ELECTRICAL FOR SERIAL
NUMBERS ABOVE 5,000 AND BELOW
9,999
Safety Interlock System
WARNING: Safety Interlock failure and improper
operation of unit can result in death or serious injury.
Check system before each use to make sure it is
functioning properly.
Perform the following tests to ensure the safety
interlock system is working properly. If the unit does not
Test Steering
Levers
1 Neutral
Position
2 Neutral
Position
3 Neutral
Position
4*+ Out of Neutral
Position
5* Neutral
Position
* Test with engine running.
+ Operator lifts off seat.
PTO Parking
Brake
Off Engaged Starts
On Engaged Doesn’t
Off Disengaged Doesn’t
Off Disengaged Shuts
On Engaged Shuts
Engine
Start
Start
Off
Off
switches on the red/green lead. Terminal A also
supplies battery voltage to the hour meter.
For models with serial numbers between 5,000 and
9,999 with the key switch in the "run" position, the seat
switch "on" and the parking brake "off" power is
supplied to terminal 86 of the start relay. Terminal 86
will also have power if the key switch is in "run", the
PTO switch is "off" and the steering arms are in the
"neutral" position. The engine will start in either case.
The effect this has on operation is that before the PTO
switch can be turned "on" or the steering arms can be
taken out of neutral it is required that the seat switch is
"on" and the parking brake is "off".
The hour meter will run whenever the key switch is in
the "run" position.
STEP 4
With ignition switch in the "start" position, battery
voltage is transferred from terminal B to S. Terminal S
transfers battery voltage through the PTO switch
(disengaged), the two neutral switches (engaged) and
through the parking brake switch (engaged) to the
starter solenoid.
PTO clutch check out: Rem ove the wiring harness P TO
clutch leads from the clutch. With a multimeter check
the clutch coil for resistance to see if the coil is good.
The clutch used should have a coil resistance
according to the table below. If the coil is bad there will
be no resistance or it will be higher.
perform as stated contact your Ariens dealer for
repairs.
Initial check o ut: Make sure tha t all swi tches are in t heir
proper position for starting: (A) PTO off. (B) transaxle in
neutral position. (C) operator on the seat. If there is no
battery voltage to start the engine, use the following
steps to determine the problem.
STEP 1
Check out the battery. Use a voltmeter to check for
proper voltage. Replace the battery if necessary and/or
charge to proper level. Refer to Battery.
STEP 2
Use a voltmeter to make sure you have battery voltage
to terminal B on the back side of the ignition switch in
the off position. If you don’t have battery voltage to
terminal B check the battery connection and the fuse in
the red lead.
STEP 3
With the ignition switch in the "run" position, check to
see if the battery voltage is being transferred from
terminal B to terminal L. Terminal L on the ignition
switch supplies battery voltage to the back of the PTO
switch on the purple lead and on to the neutral
Part Number Ohms (± 5%)
00191700 2.84
03643100 3.68
04915400 2.45
Ignition switch check out: Battery voltage check in the
"off" position, check for voltage at terminal B. It should
not be present on terminals A, S, L.
With the ignition switch in the "run/light" position, check
for battery voltage at terminal B, A, L, Y. It should not
be present at terminal S.
With the ignition switch in the "run" posit ion , check for
battery voltage at terminals B and L.
With the ignition switch in the "start" position, check for
battery voltage at terminals B, S, L.
PTO switch check out: The PTO switch is a push/pull
switch with normal open and closed contacts. Power
transfer should be checked with a voltmeter. The
switch contacts should be checked with an ohm meter
with the wire harness plug removed. The light switch is
similar to the PTO switch with only one set of contacts.
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Diode check out: Diodes are checked with an ohm
meter set on the diode check, and should only pass
voltage in one direction. If it passes voltage in both
directions or not at all the diode is bad and needs to be
replaced.
.
Key Switch Off Run Start
B 11.50-13.00 Volts 11.50-13.00 Volts 11.50-13.00 Volts
A 11.50-13.00 Volts 11.50-13.00 Volts
S 11.50-13.00 Volts
L 11.50-13.00 Volts 11.50-13.00 Volts
Contact resistance is 0.1-0.3 ohms when correct.
Seat Switch Off Run Start
Red/Yellow 11.50-13.00 Volts 11.50-13.00 Volts
Purple 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. contact resistance is 0.1-0.3 ohms when correct.
PTO Switch Off Run Start
Brown 11.50-13.00 Volts
Purple/White Connected to PTO Cl utc h
Purple 11.50-13.00 Volts 11.50-13.00 Volts
Red/Green 11.50-13.00 Volts 11.50-13.00 Volts
Brown/Yellow 11.50-13.00 Volts
2 sets of contacts, one normally open, one normally closed. Contact resistance is 0.1-0.3 ohms when correct.
Left Hand Neutral Switch (A) Off Run Start
Brown/Yellow 11.50-13.00 Volts
White 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. Contact Resistance is 0.1-0.3 ohms when correct.
(A) Measure with steering arms in neutral.
Right Hand Neutral Switch (A) Off Run Start
Red/Green 11.50-13.00 Volts 11.50-13.00 Volts
White 11.50-13.00 Volts 11.50-13.00 Volts
Yellow/Red 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. Contact Resistance is 0.1-0.3 ohms when correct.
(A) Measure with steering arms in neutral.
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Start Relay Off Run St a rt
Yellow/Red 86 11.50-13.00 Volts 11.50-13.00 Volts(A)
Black 85 Connected to Ground
Black/White 87 11.50-13.00 Volts
White/Black 87A Connected to Ignition Module
Black 30 Connected to Ground
Pins 85-86 coil resistance 87-100 ohms. pins 30-87 normally open. Pins 30-87A normally closed. Contact
resistance is 0.1-0.3 ohms when correct.
Starter Solenoid Off Run Start
Small Brown/White 1 1. 50-1 3.0 0 Volts
Small Black Connected to Ground
Large Red (Battery) 11.50-13.00 Volts 11.50-13.00 Volts 11.50-13.00 Volts
Large Red (Starter) 11.50-13.00 Volts
Normally open contacts (big terminals) coil resistance 3.0-5.0 ohms. Contact resistance is 0.1-0.3 ohms when
correct. Electrically activated.
PTO Clutch Off Run Start
Purple/white
Black/White Connected To Ground When Start Relay is Energized
Coil Resistance check clutch specifications.
Brake Switch Off Run Start
Yellow/Red 11.50-13.00 Volts 11.50-13.00 Volts
Brown/Yellow (A) 11.50-13.00 Volts
Normally closed contacts mechanically activated. Contact resistance 0.1-0.3 ohms.
(A) With neutral switches closed and PTO switch off.
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11.15 ELECTRICAL SYSTEM
Model 915055, 057, 059, 065, 067, 501, 502 for Serial Numbers Between 5,000 and 9,999
2
5
1
3
4
6
1. Relay
2. Clutch Switch
3. Key Switch
4. Switch NO
5. Neutral Switch
6. Interlock Switch
Figure 34
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11.16 WIRING DIAGRAMS
Model 915055, 057, 059, 065, 067, 501, 502 for Serial Numbers Between 5,000 and 9,999
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Page 49
11.17 CONTINUITY DIAGRAM
For Serial Numbers Between 5,000 and 9,999
The diagrams below show the various states of connection for electrical components.
The solid lines on switches show continuity.
NOTE: All switches are viewed from the rear.
Key Switch
PTO Switch
Disengaged
(down position)
Seat Switch
3
417
Off Run / Light Run
9
3
417
Disengaged
(down position) Not Energized Energized
Relay
9
Parking Brake Switch
86
87A
30
87
85
Start
87
86
85
87A
30
Operator
Off Seat
Solenoid
12 12
On Seat
Neutral Switch
Button Out Button InOperator
Not Energized Energized Button Out Button In
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11.18 ELECTRICAL FOR SERIAL
NUMBERS BELOW 5,000
Safety Interlock System
WARNING: Safety Interlock failure and improper
operation of unit can result in death or serious injury.
Check system before each use to make sure it is
functioning properly.
Perform the following tests to ensure the safety
interlock system is working properly. If the unit does not
perform as stated contact your Ariens dealer for
repairs.
Test Steering
Lever
1 Neutral
Position
2 Neutral
Position
3 Neutral
Position
4*+ Out of Neutral
Position
5* Neutral
Position
* Test with engine running.
+ Operator lifts off seat.
Initial check o ut: Make sure tha t all swi tches are in t heir
proper position for starting: (A) PTO off. (B) transaxle in
neutral position. (C) operator on the seat. If there is no
battery voltage to start the engine, use the following
steps to determine the problem.
STEP 1
Check out the battery. Use a voltmeter to check for
proper voltage. Replace the battery if necessary and/or
charge to proper level. Refer to Battery.
STEP 2
Use a voltmeter to make sure you have battery voltage
to terminal B on the back side of the ignition switch in
the "off" position. If you don’t have battery voltage to
terminal B check the battery connection and the fuse in
the red lead.
STEP 3
With the ignition switch in the "run" position, check to
see if the battery voltage is being transferred from
terminal B to terminal L. Terminal L on the ignition
switch supplies battery voltage to the back of the PTO
switch on the purple lead and on to the neutral
switches on the red/green lead. Terminal A also
supplies battery voltage to the hour meter.
PTO Parking
Brake
Off Engaged Starts
On Engaged Doesn’t
Off DisengagedDoesn’t
Off DisengagedShuts Off
On Engaged Shuts Off
Engine
Start
Start
For models with serial numbers below 5,000 with the
key switch is in the "run" position, the seat switch "on"
and the parking brake "off" power is supplied to
terminal 86 of the start relay.
Terminal 86 will also have power if the key switch is in
"run", the PTO switch is "off" and the steering arms are
in the "neutral" position. The engine will start in eit her
case.
The effect this has on operation is that before the PTO
switch can be turned "on" or the steering arms can be
taken out of the "neutral" it is required that the seat
switch is "on" and the parking brake is "off".
The hour meter will run whenever the key switch is in
the "run" position.
STEP 4
With ignition switch in the "start" position, battery
voltage is transferred from terminal B to S. Terminal S
transfers battery voltage through the PTO switch
(disengaged), and the two neutral switches (engaged)
to the starter solenoid.
PTO clutch check out: Rem ove the wiring harness P TO
clutch leads from the clutch. With a multimeter check
the clutch coil for resistance to see if the coil is good.
The clutch used should have a coil resistance of (5.87-
7.87) ohms. If the coil is bad the resistance will be
higher or not at all.
Ignition switch check out: Battery voltage check in the
"off" position, check for voltage at terminal "B". It
should not be present on terminals A, S, and L.
With the ignition switch in the "run/light" position, check
for battery voltage at terminals A, Y, and L.
With the ignition switch in the "run" posit ion , check for
battery voltage at terminal L. It should not be present at
terminal A, S, and Y.
With the ignition switch in the "start" position, check for
battery voltage at terminals B, A, S and L.
PTO switch check out: The PTO switch is a push/pull
switch with normal open and closed contacts. Power
transfer should be checked with a voltmeter. The
switch contacts should be checked with an ohm meter
with the wire harness plug removed. The light switch is
similar to the PTO switch with only one set of contacts.
Diode check out: Diodes are checked with an ohm
meter set on the diode check, and should only pass
voltage in one direction. If it passes voltage in both
directions or not at all the diode is bad and needs to be
replaced.
11 - 49
Page 51
.
Key Switch Off Run Start
B 11.50-13.00 Volts 11.50-13.00 Volts 11.50-13.00 Volts
A 11.50-13.00 Volts 11.50-13.00 Volts
S 11.50-13.00 Volts
L 11.50-13.00 Volts 11.50-13.00 Volts
Contact resistance is 0.1-0.3 ohms when correct.
Seat Switch Off Run Start
Red/Yellow 11.50-13.00 Volts 11.50-13.00 Volts
Purple 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. contact resistance is 0.1-0.3 ohms when correct.
PTO Switch Off Run Start
Brown 11.50-13.00 Volts
Purple/White Connected to PTO Cl utc h
Purple 11.50-13.00 Volts 11.50-13.00 Volts
Red/Green 11.50-13.00 Volts 11.50-13.00 Volts
Brown/Yellow 11.50-13.00 Volts
2 sets of contacts, one normally open, one normally closed. Contact resistance is 0.1-0.3 ohms when correct.
Left Hand Neutral Switch (A) Off Run Start
Brown/Yellow 11.50-13.00 Volts
White 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. Contact Resistance is 0.1-0.3 ohms when correct.
(A) Measure with steering arms in neutral.
Right Hand Neutral Switch (A) Off Run Start
Red/Green 11.50-13.00 Volts 11.50-13.00 Volts
White 11.50-13.00 Volts 11.50-13.00 Volts
Yellow/Red 11.50-13.00 Volts 11.50-13.00 Volts
Normally open contacts manually activated. Contact resistance is 0.1-0.3 ohms when correct.
(A) Measure with steering arms in neutral.
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Start Relay Off Run St a rt
Y ellow/Red 86 11.50-13.00 Volts 11.50-13.00 Volts
Black 85 Connected to Ground
Black/White 87 11.50-13.00 Volts
White/Black 87A Connected to Ignition Module
Black 30 Connected to Ground
Pins 85-86 coil resistance 87-100 ohms. pins 30-87 normally open. Pins 30-87A normally closed. Contact
resistance is 0.1-0.3 ohms when correct.
Starter Solenoid Off Run Start
Small Brown/White 1 1. 50-1 3.0 0 Volts
Small Black Connected to Ground
Large Red (Battery) 11.50-13.00 Volts 11.50-13.00 Volts 11.50-13.00 Volts
Large Red (Starter) 11.50-13.00 Volts
Normally open contacts (big terminals) coil resistance 3.0-5.0 ohms. Contact resistance is 0.1-0.3 ohms when
correct. Electrically activated.
PTO Clutch Off Run Start
Purple/white
Black/white Connected To Ground When Start Relay is Energized
Coil Resistance check clutch specifications.
Brake Switch Off Run Start
Red/Yellow 11.50-13.00 Volts 11.50-13.00 Volts
Yellow/Red (A) 11.50-13.00 Volts 11.50-13.00 Volts
Normally closed contacts mechanically activated. Contact resistance 0.1-0.3 ohms. Used on models 915013, 014,
015, 106, 306, 307.
(A) With neutral switches closed and PTO switch "off".
11 - 51
Page 53
11.19 ELECTRICAL SYSTEM
Model
915055, 057, 059, 065, 067, 501, 502 for Serial Numbers Below 5,000
2
5
1
3
5
4
1. Relay
2. Clutch Switch
3. Key Switch
4. Switch NO
5. Switch Double Pole N.O./N.O.
Figure 35
11 - 52
Page 54
11.20 WIRING DIAGRAMS
Model 915055, 057, 059, 065, 067, 501, 502 for Serial Numbers Below 5,000
11 - 53
Page 55
11.21 CONTINUITY DIAGRAM
Model 915055, 057, 059, 065, 067, 501, 5025 for Serial Numbers Below
The diagrams below show the various states of connection for electrical components.
Key Switch
The solid lines on switches show continuity.
NOTE: All switches are viewed from the rear.
PTO Switch
Disengaged
(down position)
Seat Switch
3
417
Off Run / Light Run
9
3
417
Disengaged
(down position) Not Energized Energized
Relay
9
Parking Brake Switch
86
30
87A
87
85
Start
87
86
85
87A
30
Operator
Off Seat
Solenoid
12 12
On Seat
Neutral Switch
Button Out Button InOperator
Not Energized Energized Button Out Button In
11 - 54
PE0770
Page 56
SECTION 12 - MOWER ATTACHMENT
12.1 MOWER SPINDLE REMOVAL
3
2
4
1
1. Spindle Ass em bly
2. Idler Arm
3. Idler - Flanged
4. Idler - Flat
Figure 36
The spindles are assemblies that are replaced when
worn. To remove the spindle assemblies:
1. With the mower deck removed from the unit the
disassembly of the mower may be performed.
2. Remove the mower spindle covers.
3. Remove the mower deck blades.
4. Reduce belt tension on the belt by removing the
idler pulley spring.
5. Remove the spindle sheaves and squa re key.
6. Remove the mower spindle housings from the
mower deck stamping.
7. Assemble in reverse order.
PE0550
12 - 55
Page 57
TROUBLESHOOTING
PROBLEM PROBABLE CAUSE CORRECTION
Engine will not crank/
start
Engine runs rough
1. Safety interlock system is not
engaged or is faulty.
2. Fuel tanks empty.
3. Fuel shut-off valve closed.
4. Discharged battery.
5. Poor connection between
battery and battery cables.
6. Spark plug wire(s) loose or spark
plug(s) faulty.
7. Faulty electrical system.
8. Faulty engine.
1. Choke engaged.
2. Air filter cartridge plugged.
3. Faulty engine.
1. Check safety interlock syste m (see
Safety Interlock System).
2. Fill fuel tanks (see fIlling Fuel Tanks)
3. Open fuel shut-off valve.
4. Charge battery (see Charging the
Battery).
5. Tighten battery cables and/or clean
battery and battery cables (see
Cleaning Battery and Battery
Cables).
6. Connect spark plug wire(s) or
replace spark plug(s). Refer to
Engine Manual for detailed
instructions.
7. Contact your Ariens Dealer.
8. Contact your Ariens Dealer.
1. Disengage choke.
2. Clean or replace air filter cartridge.
Refer to Engine Manual for detailed
instructions.
3. Contact your Ariens Dealer.
Unit does not move
with engine running
when using steering
levers
PTO or mower blades
do not engage or shut s
off.
Engine overheats
1. The transmission bypass lever is
engaged.
2. Faulty hydrostatic belt.
3. Faulty transmission.
1. Operator presence switch not
depressed.
2. Faulty operator presence switch.
3. Electric clutch connector is loose
or disconnected.
4. Faulty PTO belt.
5. Faulty PTO switch, wires,
connectors, or clutch.
1. Engine oil level low.
2. Cooling system plugged.
3. Faulty engine.
1. Disengage transmission bypass
lever (see Moving Unit Manually).
2. Replace hydrostatic belt (see
Replacing Hydrostatic Belt).
3. Contact your Ariens Dealer.
1. Depress operator presence switch by
sitting on seat.
2. Contact your Ariens Dealer.
3. Connect the electric clutch
connector. See Replacing
Hydrostatic Belt for the electric clutch
connector location.
4. Replace PTO belt (see Replacing
PTO Bel t ).
5. Contact your Ariens Dealer.
1. Add engine oil. Refer to Engine
Manual for detailed instructions.
2. Clean cooling system. Refer to
Engine Manual for detailed
instructions.
3. Contact your Ariens Dealer.
12 - 56
Page 58
TROUBLESHOOTING
PROBLEM PROBABLE CAUSE CORRECTION
Unit moves with
engine off and parking
brake engaged
Hour meter continues
to run when engine is
not running
Unit does not travel in
a straight line
Unit creeps with
steering levers in
neutral position.
Poor cutting quality
1. The parking brake needs
adjustment.
2. Faulty parking brake.
1. Ignition key is in the run position
with engine turned off.
1. Incorrect tire pressure.
2. Steering levers need
adjustment.
3. Hydrostatic transmission and/or
linkage needs adjustmen t.
1. Hydrostatic transmission and/or
linkage needs adjustmen t.
1. Mower deck not level or mower
pitch is incorrect.
2. Dull or faulty mower blades.
1. Contact your Ariens Dealer.
2. Contact your Ariens Dealer.
1. Turn ignition key to the off position.
1. Check tire pressure (see
Specifications).
2. Adjust steering levers (see Forward
and Reverse Speed Adjustment).
3. Contact your Ariens Dealer.
1. Contact your Ariens Dealer.
1. Level and adjust pitch of mower deck
(see Leveling and Adjusting Pitch Of
Mower Deck).
2. Sharpen mower blades (see
Sharpening Mower Blade) or replace
mower blades (see Replacing Mower
Blade).
12 - 57
Page 59
SERVICE P ARTS
ACCESSORIES
BE SURE TO ALWAYS USE GENUINE ARIENS
PARTS TO KEEP YOUR UNIT RUNNING LIKE NEW
PART NO. QTY DESCRIPTION
03498400 1 40-inch Mower Blade
(915065, 067)
00272800 1 44-inch Mower Blade
(915502)
01593900 1 44-inch Mower Blade
(915055)
00272900 1 44-inch Mower Blade
(915501)
04919100 1 48-inch Mower Blade
(915057)
04916400 1 52-inch Mower Blade
(915059)
01554800 1 Battery
07221000 1 Hydrostatic Belt
(915065, 502)
07241400 1 Hydrostatic Belt (915067,
055, 057, 059, 501)
07241800 1 40-inch PTO Belt (91506 7)
07200001 1 40-inch PTO Belt
(915065, 502)
07241700 1 44-inch PTO Belt
(915055, 501)
SEE YOUR AUTHORIZED ARIENS DEALER TO ADD
THESE OPTIONAL ACCESSOREIS TO YOUR UNIT.
PART NO. QTY DESCRIPTION
71502900 1 Dump Cart
81501200 1 46-Inch Snow Head
(915065, 067, 055, 057,
059)
81501300 1 54-Inch Dozer Blade
71503200 1 48-Inch Aerator
71503300 1 36-Inch Roller
71503400 1 48-Inch Dethatcher
71503500 1 15-Gallon Sprayer
71503600 1 Spreader
71504900 1 Sunshade
71503800 1 48-Inch Lawn Sweeper
81501500 1 Bagger (915065, 067, 055,
057, 059)
71505100 1 Baffle Kit (915065, 067, 055,
057, 059)
71501200 1 Hour Meter Kit
(915065, 502)
71504100 1 Light Kit (915065, 502)
71504700 1 Striper Kit (915065, 502)
07241500 1 48-inch PTO Belt (91505 7)
07241600 1 52-inch PTO Belt (91505 9)
07242900 1 44-inch PTO Belt (91550 1)
71505900 1 Anti-Scalp Kit (915065, 502)
12 - 58
Page 60
Ariens Company
655 West Ryan Street
P.O. Box 157
Brillion, WI 54110-0157
920-756-2141
Fax 920-756-2407
www.ariens.com
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