Snapper 7800195, 7800231, 7800232, 7800179 User Manual
Safety Instructions & Operator's Manual for
NOTE: Specifications are correct at time of printing and are subject to change without notice.
* Actual sustained engine power will likely be lower due to operating limitations and environmental factors. Please refer to ‘Engine Power Rating Information’ for further
details.
Manual No. 7101301 (Rev. A, 3/25/2009)
21” VARIABLE SPEED
REAR DISCHARGE
WALK BEHIND
MOWERS
Model No.Description
7800179 SPV21675
7800195 SPV21675E
7800231 NSPV21675
7800232 NSPV21675E
Not for
Reproduction
Thank You for purchasing this quality-built Snapper mower. We’re pleased that you placed your
confidence in the Snapper brand. When operated and maintained according to the instructions in this
manual, your Snapper mower will provide many years of dependable service.
This manual contains safety information to make you aware of the hazards and risks associated with the
machine and how to avoid them. This machine is designed and intended only for finish cutting of
established lawns and is not intended for any other purpose. It is important that you read and understand
these instructions thoroughly before attempting to start or operate this equipment. Save these
instructions for future reference.
PRODUCT REGISTRATION
IMPORTANT: KEEP THIS INFORMATION FOR YOUR PERSONAL RECORDS
(Complete the following information on your Snapper purchase)
Date of Purchase__________________________________________________________________
Retailer_________________________________________________________________________
Retailer's Phone Number___________________________________________________________
Equipment
Model Number______________________________________________________________
Serial Number ______________________________________________________________
Engine
Model_________________________Type__________________Trim___________________
Briggs & Stratton Yard Power Products Group
Copyright © 2009, Briggs & Stratton Corporation
Milwaukee, WI, USA. All Rights Reserved.
SNAPPER is a trademark of
Briggs & Stratton Power Products Group, LLC
Milwaukee, WI, USA.
Not for
Reproduction
3
Operator Safety
Features and Controls Operation Maintenance Troubleshooting Warranty
Table of Contents
Operator Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Important Operator Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Features and Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Pre-Start Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Starting & Stopping Engine & Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Propelling Mower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Handle Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Cutting Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Recycling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Installing the Discharge Deflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Removing the Recycling Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Installing the Grass Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Change Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Check Mower Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Check Engine Drive Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Service - Periodic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Wheel Drive Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Storage Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Mower Blade Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Blade Sharpening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Wheel Drive Control Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Belt Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Engine Drive Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Battery Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Rear Cover Removal & Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Service Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Slope Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
WARNING
Battery posts, terminals and related accessories contain
lead and lead compounds, chemicals known to the State of
California to cause cancer and birth defects or other
reproductive harm. Wash hands after handling.
!
!
WARNING
Engine exhaust, some of its constituents, and certain
vehicle components contain or emit chemicals known to
the State of California to cause cancer or other reproductive
harm.
!
!
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Operator Safety
! !
IMPORTANT OPERATOR SAFETY INSTRUCTIONS
WARNING: This powerful cutting machine is capable of amputating hands and feet and can throw objects
that can cause injury and damage! Failure to comply with the following SAFETY instructions could result in
serious injury or death to the operator or other persons. The owner of the machine must understand these
instructions and must allow only persons who understand these instructions to operate machine. Each
person operating the machine must be of sound mind and body and must not be under the influence of any
substance, which might impair vision, dexterity or judgment. If you have any questions pertaining to your
machine which your dealer cannot answer to your satisfaction, call or write the Customer Service
Department at SNAPPER, McDonough, Georgia 30253. Phone: (1-800-317-7833).
PROTECTION FOR CHILDREN
Tragic accidents can occur if the operator is not alert to the
presence of children. Children are often attracted to the
machine and the mowing activity. Never assume that
children will remain where you last saw them.
1. KEEP children out of the mowing area and under the
watchful care of a responsible adult other than the operator.
2. DO NOT allow children in yard when machine is operated
and turn machine OFF if anyone enters the area.
3. DO NOT allow pre-teenage children to operate machine.
4. ALLOW only responsible adults & teenagers with mature
judgment under close adult supervision to operate machine.
5. DO NOT pull mower backwards unless absolutely
necessary. LOOK and SEE behind and down for children,
pets and hazards before and while backing.
6. USE EXTRA CARE when approaching blind corners,
shrubs, trees, or other objects that may obscure vision.
SLOPE OPERATION
1. Slopes are a major factor related to slip and fall
accidents, which can result in severe injury. All slopes
require extra caution. If you feel uneasy on a slope, DO NOT
mow it.
2. Mow across slopes, never up-and-down. Exercise
extreme CAUTION when changing directions on slopes. DO
NOT mow steep slopes or other areas where stability or
traction is in doubt. Refer to the Slope Guide at the back of
this manual.
3. Use extra care with grass catchers or other attachments;
these affect the handling and the stability of the machine.
PREPARATION
1. Read, understand, and follow instructions and warnings
in this manual and on the mower, engine and attachments.
Know the controls and the proper use of the mower before
starting.
2. Only mature, responsible persons shall operate the
machine and only after proper instruction.
3. Data indicates that operators age 60 and above, are
involved in a large percentage of mower-related injuries.
These operators should evaluate their ability to operate the
mower safely enough to protect themselves and others
from serious injury.
4. Handle fuel with extra care. Fuels are flammable and
vapors are explosive. Use only an approved fuel container.
DO NOT remove fuel cap or add fuel with engine running.
PREPARATION
(Continued From Previous Column)
Add fuel outdoors only with engine stopped and cool. Clean
spilled fuel and oil from machine. DO NOT smoke.
5. Check the area to be mowed and remove all objects such
as toys, wire, rocks, limbs and other objects that could
cause injury if thrown by blade or interfere with mowing.
Also note the location of holes, stumps, and other possible
hazards.
6. Keep people and pets out of the mowing area.
Immediately, STOP Blade, Stop engine and Stop mower if
anyone enters the area.
7. Check shields, deflectors, switches, blade controls and
other safety devices frequently for proper operation and
location.
8. Make sure all safety decals are clearly legible. Replace if
damaged.
9. Protect yourself when mowing and wear safety glasses,
long pants and substantial footwear. DO NOT mow
barefooted or with sandals.
10. Know how to STOP blade and engine quickly in
preparation for emergencies.
11. Use extra care when loading or unloading the machine
into a trailer or truck.
12. Check grass catcher components frequently for signs of
wear or deterioration and replace as needed to prevent
injury from thrown objects going through weak or torn
spots.
SAFE HANDLING OF GASOLINE
To avoid personal injury or property damage, use extreme
care in handling gasoline. Gasoline is extremely flammable
and the vapors are explosive.
1. Extinguish all cigarettes, cigars, pipes and other sources
of ignition.
2. Use only an approved fuel container.
3. DO NOT remove fuel cap or add fuel with the engine
running. Allow the engine to cool before refueling.
4. DO NOT refuel the machine indoors.
5. DO NOT store the machine or fuel container inside where
there is an open flame, spark or pilot light such as on a
water heater or other appliances.
6. DO NOT fill fuel containers inside a vehicle or on a
truck or trailer bed with a plastic liner. Always place the
containers on the ground away from the vehicle before
filling.
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Operator Safety
! !
IMPORTANT OPERATOR SAFETY INSTRUCTIONS (Continued)
SAFE HANDLING OF GASOLINE
(Continued From Previous Page)
7. Remove gas-powered equipment from the vehicle or
trailer and refuel it on the ground. If this is not possible,
then refuel equipment using a portable container, rather
than a gasoline dispenser nozzle.
8. DO NOT start gas powered equipment in enclosed
vehicles or trailers.
9. 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
10. If fuel is spilled on clothing, change clothing
immediately.
11. DO NOT overfill a fuel tank. Replace fuel cap and tighten
securely.
OPERATION
1. DO NOT put hands or feet near or under rotating parts.
Keep clear of discharge area while engine is running.
2. STOP engine when crossing gravel drives, walks, or
roads, and under any conditions where thrown objects
might be a hazard.
3. Mow only in daylight or good artificial light.
4. DO NOT operate mower while under the influence of
alcohol or drugs.
5. After striking a foreign object or if mower vibrates
abnormally, STOP the engine, disconnect and secure spark
plug wire. Inspect the mower for any damage and repair the
damage before starting.
6. DO NOT mow near drop offs, ditches or embankments.
Operator could lose footing or balance.
7. STAY ALERT for holes and other hidden hazards. Tall
grass can hide obstacles. Keep away from ditches,
washouts, culverts, fences and protruding objects.
8. DO NOT mow on wet grass. Always be sure of your
footing. Keep a firm hold on the handle and walk, never run.
Slipping could cause injury.
9. ALWAYS stay behind handle when engine (motor) is
running.
10. DO NOT leave the machine with the engine running.
STOP BLADE and STOP ENGINE before leaving the
operators position for any reason.
11. Before cleaning, repairing or inspecting make certain
engine, blade and all moving parts have STOPPED.
Disconnect and secure spark plug wire away from plug to
prevent accidental starting.
12. STOP engine and wait until the blade comes to
complete STOP before removing grass bag and/or clearing
grass.
13. DO NOT operate mower without the entire grass
catcher, or guards in place discharge guard, rear guard or
other safety devices in place and working. DO NOT point
discharge at people, passing cars, windows or doors.
OPERATION
(Continued From Previous Column)
14. DO NOT discharge material against a wall or
obstruction. Material may ricochet back towards the
operator.
15. Slow down before turning.
16. Watch out for traffic when near or crossing roadways.
17. DO NOT operate engine in enclosed areas. Engine
exhaust gases contain carbon monoxide, a deadly poison.
18. Only use accessories approved by the manufacturer.
See manufacturer’s instructions for proper operation and
installation of accessories.
MAINTENANCE AND STORAGE
1. DO NOT store mower or fuel container inside where
fumes may reach an open flame, spark or pilot light such as
in a water heater, furnace, clothes dryer or other gas
appliance. Allow engine to cool before storing machine in
an enclosure. Store fuel container out of reach of children
in a well ventilated, unoccupied building.
2. Keep mower and engine free of grass, leaves or excess
grease to reduce fire hazard and engine overheating.
3. When draining fuel tank, drain fuel into an approved
container outdoors and away from open flame.
4. Keep all bolts, especially blade bolts, nuts and screws
properly tight. Check that all cotter pins are in proper
position.
5. Always provide adequate ventilation when running
engine. Engine exhaust gases contain carbon monoxide, a
deadly poison.
6. Service engine and make adjustments only when engine
is stopped. Removed spark plug wire from spark plug and
secure wire away from spark plug to prevent accidental
starting.
7. DO NOT change engine governor speed settings or
overspeed engine.
8. Check grass bag assembly frequently for wear or
deterioration to avoid thrown objects and exposure to
moving parts. Replace with new bag if loose seams or tears
are evident. Replace slider or bag adapter if broken or
cracked.
9. Mower blades are sharp and can cut. Wrap the blades or
wear heavy leather gloves and use CAUTION when handling
them.
10. DO NOT test for spark by grounding spark plug next to
spark plug hole; spark plug could ignite gas exiting engine.
11. Have machine serviced by an authorized SNAPPER
dealer at least once a year and have the dealer install any
new safety devices.
12. Use only genuine SNAPPER replacement parts to
assure that original standards are maintained.
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Features and Controls
IMPORTANT
The figures and illustrations in this manual are provided
for reference only and may differ from your specific model.
Contact your Snapper dealer if you have questions.
Features and Controls
A. Oil Fill Cap and Dipstick
B. Fuel Filler Cap
C. Recycling Cover
D. Battery Box
E. Height Adjustment Lever
F. Blade Control
G. Rope Start Handle
H. Drive Wheel Control
I. Rear Discharge Door
J. Grass Bag
D
E
H
F
G
A
B
J
I
C
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7
Operation
Pre-Start Check List
Make the following checks and perform the service required
before each start-up.
1. Check the guards, deflectors, grass bag, and covers to
make sure all are in place and securely tightened.
2. Check the blade control (A, Figure 1) and wheel drive
control (B) to insure they work freely.
3. Check the cutting height. Adjust to the desired height.
Refer to the Section ‘Cutting Height Adjustment’.
4. Check the engine oil and add oil as needed to bring the
level up to the full mark (A, Figure 2). Refer to the
Engine Owner’s Manual for oil specifications.
5. Add fuel to the tank after pushing the mower outside
where fumes can safely dissipate. Fill the tank to 1-1/2
inches below the top of the filler neck (to allow for fuel
expansion). Make sure the cap is tightened after fueling.
Refer to the Engine Owners Manual for fuel
specifications.
6. Clean the exterior surfaces of the cutting deck and
engine of any accumulation of spilled fuel, dirt, grass,
oil, etc. Keep the engine air intake screen and cooling
fins clear at all times.
Starting and Operation
Engine and Blade
1. Pull the blade control (A, Figure 3) against the handle.
2. Start the mower:
Manual Start Models: Pull the rope start handle (B)
to crank the engine.
Electric Start Models: Insert the key (C) into the
ignition switch (D), located on the right side of the
handle above the rope guide. Turn the key to crank
the engine.
3. After the engine starts, allow a brief warm-up until the
engine runs smooth before beginning mower operation.
NOTE:
To stop the engine (and blade), release the blade
control.
Figure 2: Checking engine oil
B
A
Figure 1: Mower controls
A
B
A
D
Figure 3: Starting the mower
C
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Operation
Starting and Operation (Continued)
Propelling the Mower
1. Start the engine. Refer to the Section entitled “Starting
and Operation – Engine and Blade”.
2. Begin squeezing the wheel drive control (A, Figure 4)
back toward the handle to engage the wheel drive and
propel the mower forward. Forward speed can be
increased by squeezing the wheel drive control further
back toward the handle.
Stopping
1. Stop forward motion of the mower by releasing the
wheel drive control.
2. Stop the engine and blade by releasing the blade
control.
Handle Height Adjustment
The height of the mower handle can be adjusted as follows:
1. Turn the two locking cams (A, Figure 5) a quarter-turn to
unlock the handle assembly (B).
2. Align the handle assembly with one of the three handle
height adjustment holes (C) in the mounting brackets.
3. Return the locking cams to their original position to lock
the handle.
Figure 5: Adjusting the handle height
Figure 4: Wheel drive control
A
A
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
!
!
(Components removed for clarity)
B
C
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9
Operation
Cutting Height Adjustment
1. Pull the height adjusting lever (A, Figure 6) outward, and
move to the desired cutting height. The highest cutting
position is Notch 9 (B; also see Figure 7). The lowest
cutting position is Notch 1 (C).
Note: The lever will set all wheels to the same cutting height.
Recycling Operation
Note:
For best recycling results, cut up to a maximum of 1/3
of grass blade length and recycle ONLY when grass is dry.
1. Set the height adjustment lever in the highest cutting
position (Notch 9). Refer to the Section entitled “Cutting
Height Adjustment”.
2. Proceed mowing slowly. If the grass is very dense,
lower the height adjustment lever one notch lower to
improve recycling performance.
Installing the Discharge Deflector
1. Raise the recycling cover (A, Figure 8).
Important:
The recycling cover should remain on the
machine at all times. Do not remove.
2. Install the deflector (B) to the deck under the recycling
cover, making sure that:
The tabs (C) hook under the pivot rod (D).
The locking tab on the deck (A, Figure 9) goes
through the slot in the deflector (B).
3. Lower the recycling cover against the deflector.
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
!
!
WARNING
Stop engine and mower blade by releasing the blade
control before adjusting cutting height.
!
!
Figure 6: Adjusting cutting height
4.00 in1.50 in
Figure 7: Cutting height settings (approximate)
B
C
Figure 8: Installing the discharge deflector
A
B
D
C
A
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Operation
Removing the Recycling Plug
1. Raise the rear discharge door (A, Figure 10).
2. Remove the recycling plug (B) from the rear discharge
chute.
Note:
The recycling plug should be removed only when
bagging is desired, and should be replaced as soon as
bagging operations are completed.
Installing the Grass Bag
1. Raise the rear discharge door (A, Figure 11).
2. Remove the recycling plug. Refer to the section entitled
“Removing the Recycling Plug”.
3. Holding the grass bag handle (B), install the grass bag
onto the back of the mower, making sure that the grass
bag hooks (A, Figure 12) are hooked onto the rear door
pivot rod (B).
WARNING
Grass Catcher bags used on SNAPPER products are made
of woven fabric, and are subject to deterioration and wear
during normal usage. Check condition of bag before each
use. Immediately replace worn or damaged catcher bags
with only bags recommended by SNAPPER. The grass
catcher is optional equipment on some models.
!
!
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
!
!
Figure 10: Removing the recycling plug
Figure 11: Installing the grass bag
B
A
Figure 9: Deflector locking tab
A
B
A
B
Figure 12: Grass bag hooks
A
B
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11
Maintenance
Maintenance - Introduction
To retain the quality of the mower, use genuine SNAPPER
replacement parts only. Contact a local SNAPPER dealer for
parts and service assistance. For the correct part or
information for a particular mower, always mention the
model and serial number.
Service - After First 5 Hours
Change Engine Oil
1. Refer to the Engine Manual for proper oil specifications,
procedures and proper service intervals.
2. For the simplest/cleanest oil change, simply turn the
mower on its side to drain the oil, as shown. Drain the
oil through the dipstick tube (A, Figure 13) into a container. Allow sufficient time for all the oil to drain.
Important: Drain the fuel tank before tipping the machine.
DO NOT tip the machine with the carburetor or spark plug
down. Oil from the crankcase will saturate the air filter and
cause the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
3. Dispose of drain oil properly.
4. Fill the engine with oil as specified in the Engine Manual.
Do Not overfill.
Check Mower Blade
1. Disconnect the spark plug wire and secure the end away
from the plug.
2. Tilt the mower up on its rear wheels for access to the
blade cap screw (A, Figure 14). Do not tilt the mower
with the spark plug or carburetor down.
Important: Drain the fuel tank before tipping the mower. DO
NOT tip the machine with the carburetor or spark plug down.
Oil from the crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
3. Check the torque of the blade cap screw. Recommended
torque should be 40 ft. lbs.
4. Check the blade for sharpness, wear and damage. Refer
to the Section entitled “Blade Wear Limits”.
Check Engine Drive Belt
1. Visually check the engine drive belt for cracking, fraying,
severed or exposed belt strands. If worn or damaged,
replace the belt before operating the mower.
Service - Periodic
Perform all maintenance as described in the “Service
Schedule” section of this manual.
Engine
Service the engine according to the engine owner’s manual.
Air Filter
Refer to the engine owner’s manual for service instructions.
Engine Oil
Refer to the engine owner’s manual for service instructions.
Figure 13: Draining the engine oil
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
!
!
A
Figure 14: Tightening the blade cap screw
A
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Maintenance
Wheel Drive Components
1. Remove the rear cover. Refer to the Section entitled
“Rear Cover Removal & Installation”.
2. Clean any debris buildup on or around the transmission,
axles, idler, pulleys, belt, etc., as well as on the inside of
the cover. Check components for wear or damage.
Replace worn or damaged components immediately.
3. Replace the rear cover.
Important: DO NOT operate the mower without the rear
cover securely in place.
Storage Procedure
Refer to the Engine Owner’s Manual for directions regarding
engine storage preparations. Prepare the mower for “end of
season” storage as follows:
1. Drain the fuel from the fuel tank and let the engine run
until all fuel is out of the carburetor.
2. Disconnect and remove the spark plug wire away from
the spark plug before any other preparations are made!
3. Tape all openings closed to prevent spraying water into
the exhaust or air intakes during washing.
4. Tilt the mower up on its rear wheels and thoroughly
clean the underside of the deck. Do not tilt the mower
with the spark plug or carburetor down. Scrape away
any accumulation of grass with a putty knife and/or
wire brush.
5. Lubricate all exposed metal with a light coating of oil to
prevent corrosion.
6. Carefully fold the handles, “flexing” the control cables to
prevent cable damage.
7. Store the mower in a shed or other dry area, protected
from weather.
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
!
!
Not for
Reproduction
13
Maintenance
Mower Blade Replacement
Standard Blade Wear Limit
1. Inspect the blade (Figure 15) frequently for signs of
excessive wear or damage:
(A) New blade
(B) Wear limit (notch starts)
(C) Dangerous condition! Do not use on the mower!
Replace with a new blade.
Blade Sharpening
1. Disconnect the spark plug wire and secure the end away
from the plug.
2. Tilt the mower up on its rear wheels. Do not tilt the
mower with the spark plug or carburetor down.
Important: Drain the fuel tank before tipping the mower. DO
NOT tip the machine with the carburetor or spark plug down.
Oil from the crankcase will saturate the air filter and cause
the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
3. Remove the blade (B, Figure 16).
4. Sharpen the blade on a grinding wheel at an angle of 22
to 28 degrees (B, Figure 17). DO NOT sharpen the blade
beyond the original cutting edge (A).
5. Check blade for balance. If necessary, correct balance by
grinding heavy end of blade.
6. Reinstall blade (B, Figure 16). Note the correct assembly order:
(A) Blade hub
(B) Blade
(C) Blade flange (facing up)
(D) Cone washer (concave side up)
(E) Capscrew
7. Check torque of blade retaining cap screw.
Recommended torque should be 40 ft. lbs.
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Wear heavy leather gloves when handling or working
around cutting blades. Blades are extremely sharp and can
cause severe injury.
!
!
Figure 15: Mower blade wear limits
A
B
C
WARNING
DO NOT use a cutting blade that shows signs of excessive
wear or damage. Refer to the Section entitled “MOWER
BLADE REPLACEMENT” for proper blade inspection and
service procedures.
!
!
Make sure that
blade hub is seated
between flanges
Figure 16: Removing the mower blade
Do not sharpen
beyond original
cutting edge
End view of
blade assembly
22-28
0
Figure 17: Sharpening the mower blade
A
B
C
A
B
D
E
Not for
Reproduction
www.snapper.com14
Maintenance
Wheel Drive Control Adjustment
The wheel drive control lever (A, Figure 18) should engage
the transmission when the lever is squeezed back toward the
handlebar, and should disengage the transmission when the
lever is released.
If the transmission does not engage or disengage,
adjustment may be performed as follows:
1. Remove the rear cover from the mower. Refer to the
section entitled “Rear Cover Removal & Installation”.
2. With the wheel drive control lever in the ‘DISENGAGE’
position, the spring (A, Figure 19) on the end of the
wheel drive control cable should have no tension.
Measure the overall length of the unextended spring (B).
3. Fully engage the lever, and measure the length of the
extended spring. The overall spring length should
increase by 0.020 – 0.025”.
4. To adjust spring extension:
a. Disengage the lever.
b. To increase (+) the extended spring length, loosen
the jam nut (B, Figure 20) and rotate the ferrule (C)
below the adjustment turnbuckle (A), located on the
lower end of the wheel drive control cable, one-half
turn out from the turnbuckle. Tighten the jam nut.
c. To decrease (-) the extended spring length, loosen
the jam nut, and rotate the ferrule one-half turn in
toward the turnbuckle. Tighten the jam nut.
5. Engage the lever and recheck the extended spring
length. Repeat Step 4 as needed.
IMPORTANT: INCORRECT ADJUSTMENT CAN CAUSE
PREMATURE WEAR AND/OR DAMAGE TO THE WHEEL
DRIVE COMPONENTS.
Figure 20: Adjusting the transmission spring tension
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
! !
Figure 18: Wheel drive controls
A
Figure 19: Measuring the disengaged transmission spring
length
A
A
+
(Components removed for clarity)
B
B
C
-
Not for
Reproduction
15
Maintenance
Belt Service
On self-propelled mowers, the engine belt transmits power
from the engine to the transmission that powers the rear
wheels. Should the belt become worn, it could cause slippage, which would impair mower performance. The condition of the engine belt should be checked after every 25
hours of mower operation.
Engine Drive Belt Replacement
1. Empty the fuel tank.
2. Remove the blade (A, Figure 21). Refer to the Section
entitled “Blade Sharpening”.
3. Remove the hardware (B) securing the two-piece belt
cover beneath the deck. Remove the cover.
4. Remove the rear cover of the mower. Refer to the Section
entitled “Rear Cover Removal & Installation”.
5. To replace the belt:
a. Remove the hardware (B, Figure 22) securing the belt
guide (A) to the transmission assembly. Remove the
belt guide.
b. Remove the belt from the transmission and engine
pulleys, noting the belt routing.
c. Replace the belt.
d. Replace the belt guide onto the transmission.
6. Replace the covers and blade.
Note: Recommended blade torque is 40 ft. lbs.
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
! !
Figure 21: Removing the blade and belt cover
A
Figure 22: Removing the belt guide
A
B
B
Not for
Reproduction
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