Jacobsen ZT90023, ZT90024 Safety, Operation & Maintenance Manual

Safety, Operation, & Maintenance Manual

WARNING

Warning: If incorrectly used, this machine can cause severe injury. Those who use and maintain this machine should be trained in its proper use, warned of its dangers, and must read the entire manual before attempting to set up, operate, adjust, or service the machine.

700507- Rev A

Standing Zero Turn Rotary Mower

ZT90023 – SZT 2648, 48 Inch (121.9 cm) Cutting Unit ZT90024 – SZT 2654, 54 Inch (137.2 cm) Cutting Unit

1 CONTENTS

1Contents

Introduction

2.1 Important.............................................................................2

2.2 Product Identification...........................................................3

2.3 Serial Numbers ...................................................................3

2.4 Guidelines for the Disposal of Scrap Products....................4

Safety

3.1 How to Operate Safely........................................................5

Specifications

4.1 Engine Specifications........................................................10

4.2 Dimensions and Weights ..................................................11

4.3 Mower Specification..........................................................13

4.4 Cutting Unit Specification..................................................13

4.5 Belt Specification...............................................................13

4.6 Recommended Lubricants ................................................14

4.7 Slopes ...............................................................................14

4.8 Accessories.......................................................................14

4.9 Support Literature .............................................................14

Decals

5.1 Safety Decals....................................................................15

5.2 Instruction Decals..............................................................17

Controls

6.1 Mower Controls.................................................................18

6.2 Control Panel ....................................................................19

6.3 Neutral Release ................................................................24

6.4 Operator Platform Latch....................................................24

Operation

7.1 Daily Inspection.................................................................25

7.2 OPC System .....................................................................26

7.3 Operating Procedure.........................................................27

7.4 Starting The Engine ..........................................................28

7.5 To Stop The Engine ..........................................................28

7.6 Driving...............................................................................29

7.7 Height of Cut .....................................................................30

7.8 Mowing..............................................................................30

7.9 Mowing On Slopes............................................................31

7.10 Towing The Mower..........................................................33

Maintenance and Lubrication Charts

8.1 Maintenance Chart............................................................34

8.2 Lubrication Chart...............................................................35

8.3 Fluid Requirements...........................................................35

Maintenance

9.1 General Precautions .........................................................36

9.2 Engine...............................................................................36

9.3 Engine Oil .........................................................................37

9.4 Engine Air Filter ................................................................38

9.5 Fuel ...................................................................................38

9.6 Battery...............................................................................39

9.7 Charge the battery ............................................................40

9.8 Engine Exhaust.................................................................40

9.9 Drive Axle Fluid.................................................................41

9.10 Tires ................................................................................42

9.11 Wheel Mounting Procedure ............................................42

9.12 Air Cooling System .........................................................43

9.13 Inspecting Blades............................................................43

9.14 Sharpening Blades..........................................................44

9.15 Electrical System ............................................................44

9.16 Care and Cleaning ..........................................................45

9.17 Mower Storage................................................................46

Adjustments

10.1 General Precautions .......................................................47

10.2 Forward Speed Adjustment ............................................47

10.3 Deck Level Adjustment ...................................................48

10.4 Discharge Chute Cable...................................................48

10.5 Neutral Adjustment .........................................................49

10.6 Torque Specification .......................................................50

Problem Solving

11.1 General ...........................................................................51

Quality of Cut

12.1 Quality of Cut Problem Solving .......................................52

12.2 Washboarding.................................................................52

12.3 Step Cutting ....................................................................53

12.4 Scalping ..........................................................................54

12.5 Stragglers........................................................................55

12.6 Streaks............................................................................56

12.7 Windrowing .....................................................................57

Notes

or portions thereof in any form.”

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Litho In U.S.A. 10-2015

Proposition 65 Warning

This product contains or release chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

INTRODUCTION 2

2Introduction

2.1 IMPORTANT ______________________________________________________________

The Jacobsen SZT 2648 and SZT 2654 with a Gasoline engine is a self propelled rotary mower.

If you follow all instructions in this manual, you increase the life of your mower and keep its maximum performance. Adjustments and maintenance must always be done by an approved technician.

IMPORTANT: Do the maintenance included in this manual to make sure that the quality of cut is kept at a high level.

This SAFETY, OPERATION AND MAINTENANCE MANUAL is part of the mower and must stay with the mower always. Suppliers of both original and used mowers need to keep the documentation that comes with the mower.

You must use the mower to cut the grass and not for any other purpose. Compliance with the conditions or operation, service and repair specified by the manufacturer, are understood to be part of the correct use.

ALL operators MUST read through this manual and understand the Safety Instructions, controls, lubrication and maintenance procedures.

Make sure that you obey all safety and road traffic regulations.

You must not make any changes to the mower that the manufacturer does not approve. This type of change can release the manufacturer from the liability for any damage or injury.

When you discard worn parts, know the environmental result and use the systems available in the country where the mower is used. When the mower is at its end of life, there are guidelines in this manual for the removal of the mower from use.

Use only Jacobsen approved parts.

2006/42/EC The instructions recorded here are the original instructions confirmed by Jacobsen, A Textron Company.

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2 INTRODUCTION

MMMMMMMSSSSSS

BARCODE

Seven digit product code Six digit serial number

Serial Plate Location

2.2 PRODUCT IDENTIFICATION_________________________________________________

Mower Serial number plate

A Product code and Serial number

Location of Mower Serial number plate

The serial number plate (A) is found on the right front frame rail.

Engine Identification Numbers

The engine Model, Type and Code numbers are stamped on the top of the right side valve cover.

The engine serial number is also found on a label on the side of the engine.

2.3 SERIAL NUMBERS ________________________________________________________

Record the mower and engine numbers shown below:

Mower Number:_________________________

Engine Number:__________________________

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INTRODUCTION 2

2.4 GUIDELINES FOR THE DISPOSAL OF SCRAP PRODUCTS _______________________

2.4.1 DURING SERVICE LIFE _____________________________________________________

The used oil, oil filters and engine coolant are hazardous materials. Follow the recommended procedures for their safe removal.

If a fluid leaks, contain the spill to make sure that the leak does not flow into the ground or drainage system. Follow the local laws to make sure that leaks are controlled safely.

The maintenance procedures in this manual make sure that the damage that the mower can cause in the local environment is controlled safely.

Take these actions after the mower complete its full service life.

2.4.2 END OF SERVICE LIFE _____________________________________________________

Use these guidelines with applicable Health, Safety and Environmental laws. Always use the approved local waste disposal and agencies for recycled materials.

• Park the mower in a location to use all of the necessary lifting equipment.

• Use the correct tools and Personal Protective Equipment (PPE) and take instruction from the technical manuals applicable to the mower.

• Remove and keep correctly

1. Batteries

2. Fuel

3. Engine coolant

4. Oils

• Disassemble the structure of the mower and refer to the technical manuals. Give attention to parts that have mechanical pressure or tension applied to the part in the mower, including springs.

• Separate items that continue to have service life and returned to storage.

• Separate items that are worn into the material groups and removed according to the agencies for the recycled materials that are available. Common types are as shown:

• Steel

• Non ferrous metals

• Aluminum

• Brass

• Copper

• Plastic Materials

• Identified

• Can be recycled

• Can not be recycled

• Not Identified

• Rubber

• Electrical and Electronic Components

• Add items that can not be easily separated into different materials to the “General discarded materials” area.

• Do not burn the discarded materials

Change the mower records to show that the mower is not in service and is discarded. Supply this serial number to Jacobsen Warranty Department to close their records.

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3 SAFETY

3Safety

3.1 HOW TO OPERATE SAFELY ______________________________________________________

WARNING

EQUIPMENT OPERATED INCORRECTLY OR WITHOUT TRAINING CAN BE DANGEROUS.

Know the location and correct operation of controls. Operators without experience must receive instruction from another person that knows the correct operation of the equipment before you operate the mower.

Only use parts, accessories and attachments approved by Jacobsen.

3.1.1 SAFE OPERATION

a Read the Operator’s Manual and other training material. If the operator or technician can not read this manual,

the owner is responsible to describe this material to the operators and technicians. Manuals in additional languages may be available on the Jacobsen or RansomesJacobsen website.

a Read all of the instructions for this mower carefully. Know the controls and the correct operation of the

equipment.

b Children or persons who do not understand these instructions must not use the mower. The local regulations can

limit the age of the operator.

c Never use a mower near persons, including children or animals.

d Remember that the operator or owner is responsible for accidents or hazards that occur to other persons or their

property.

e Never carry passengers.

f Never allow persons to operate or service the mower or its attachments without correct instructions.

g Do not operate equipment while tired, sick or after you use alcohol or drugs.

3.1.2 PREPARATION

a When you operate the mower, wear correct clothing, slip resistant work shoes or boots, work gloves, hard hat,

safety glasses and hearing protection. Long hair, loose clothing or jewelry can be caught in moving parts.

b Do not operate the equipment with the OPC System disconnected or the system does not operate correctly. Do

not disconnect or prevent the operation of any switch.

c Never operate equipment that is not in correct order or without decals, guards, shields, deflectors or other

protective devices fastened. DO NOT operate the cutting unit without the discharge chute installed.

d Inspect the mower before you operate the mower. Check the tire pressure and the engine oil level. Fuel is

flammable. Use caution when you add the fuel to the mower.

e Operate the mower in daylight or in good artificial light. Use caution when you operate the mower during bad

weather. Never operate the mower with lightning in the area.

f Inspect the area to select the accessories and attachments that are needed to correctly and safely do the job.

Only use parts, accessories and attachments approved by Jacobsen.

g Be careful of holes in the terrain and other hazards that are not visible.

h Inspect the area where the equipment is operated. Remove all objects you can find before you operate. Be

careful of obstructions above the ground (low tree limbs, electrical wires) and also underground obstacles (sprinklers, pipes, tree roots). Enter a new area carefully. Look for possible hazards.

i Inspect the cutting unit before you start the mower. Make sure the blades are free to rotate. When you rotate one

blade, other blades can rotate.

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SAFETY 3

3.1.3 OPERATION

a Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust

fumes can increase to dangerous levels.

b Never carry passengers. Keep other persons or animals away from the mower.

c Disengage all drives and engage the parking brake before you start the engine. Only start the engine with the

operator in the seat. Never start the engine with persons near the mower.

d Keep your legs, arms and body inside the operator compartment while the mower is in operation. Keep your

hands and feet away from the cutting units.

e Do not use on the slopes greater than the safe slope limit for the equipment.

f To guard against over turning or loss of control:

– Operate the mower up and down on the face of slopes (vertically), but not across the face (horizontally).

– Do not start or stop suddenly on slopes.

– Operating the mower on wet turf may cause a loss of traction and steering control if operating on a slope

(horizontally).

– Decrease the speed when you operate on slopes or when you must turn. Use caution when you change

direction. Turf condition can change the mower stability.

– Use caution when you operate the mower near drop-offs, ditches or embankments.

– Be careful of holes in the terrain and other hazards that are not visible.

g When you drive in the reverse direction, look behind you and down to make sure the path is clear. Do not operate

the cutting unit when you drive in the reverse direction.

h Use caution when you go near corners, trees or other objects that can prevent a clear view.

i Equipment must meet the current regulations to be driven on the public roads.

j Before you move across or operate on the paths or roads, turn off the PTO switch, lift the cutting unit and travel at

decreased speed. Look for traffic.

k Stop the blades when the mower is on any surface that is not grass.

l Do not release the cut grass in the direction of persons or allow persons near the mower while in operation.

m Do not operate the mower with damaged guards or without safety devices in position.

n Do not change the engine governor setting or over-speed the engine. Never change or tamper with adjusters that

are closed with a seal for the engine speed control.

o Before you leave the operator compartment, for any reason:

– Disengage all the drives and lower attachments to the ground. Place the steering control levers in the Neutral

position.

– Engage the parking brake.

– Stop the engine and remove the key.

p When you hit an object or mower starts to cause the vibration that is not normal, inspect the mower for damage

and make repairs.

q Decrease the throttle setting before you stop the engine.

r Do not use this equipment for uses that the mower was not made for.

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3 SAFETY

3.1.4 SAFE HANDLING OF FUELS

a The fuel and the fuel vapors are flammable. Use caution when you add the fuel to the mower. The fuel vapors

can cause an explosion.

b Never use the containers that are not approved to keep or transfer fuel.

c Never keep the mower or fuel containers near an open flame or any device that can cause the ignition of fuel or

fuel vapors.

d Never fill the fuel containers inside a vehicle or on a truck or trailer with a plastic liner. Always put the fuel

container on the ground away from your vehicle before you fill the container.

e Refuel the mower before you start the engine. When the engine is in operation or while the engine is hot, never

remove the fuel cap or add fuel to the mower.

f Refuel outdoors only and do not smoke when you add fuel. Extinguish all types of ignition.

g The fuel nozzle must touch the rim of the fuel tank when you add fuel to the mower. Do not use a device to lock

the fuel nozzle in the open position.

h Do not over fill the fuel tank. Only fill the tank to the bottom of the filler neck.

i Always tighten the fuel tank cap and container cap after you add fuel.

j If the fuel spills on your clothing, change your clothing immediately.

3.1.5 MAINTENANCE AND STORAGE

a Before you clean, adjust or repair this equipment, push PTO switch to the OFF position, lower the cutting unit to

the ground, engage the parking brake, stop the engine and remove the key.

b Make sure the mower is parked on a solid and level surface.

c Never work on a mower that is lifted only by the jack. Always use the jack stands.

d Never allow persons to service the mower or its attachments without correct instructions.

e When the mower is parked, put into storage or left without an operator, lower the cutting device unless a positive

mechanical lock is used.

f When you put the mower on a trailer or put the mower in storage, close the fuel valve. Do not keep fuel near

flames or drain the fuel inside a building.

g Disconnect the battery before you service the mower. Always disconnect the negative battery cable before the

positive battery cable. Always connect the positive battery cable before the negative battery cable.

h Charge the battery in an area with good airflow. The battery can release hydrogen gas that is explosive. To

prevent an explosion, keep any device that can cause sparks or flames away from the battery.

i Disconnect the battery charger from the power supply before you connect or disconnect the battery charger to

the battery. Wear protective clothing and use insulated tools when you service the battery.

j Be careful and wear gloves when you check or service the cutting unit blades. Replace any damaged blades, do

not try to correct a damaged blade.

k Keep your hands and feet away from parts that move. Do not adjust the mower with the engine in operation,

unless the adjustment needs the engine in operation.

l Carefully release the pressure from components with stored energy.

m Keep the mower and the engine clean.

n Allow the engine to become cool before storage and always remove the ignition key.

o Keep all nuts, bolts and screws tight to make sure the equipment is in safe condition.

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SAFETY 3

p Replace worn or damaged parts for safety. Replace damaged or worn decals. Only use parts, accessories and

attachments approved by Jacobsen.

q To decrease the fire hazard, remove materials that burn from the engine, muffler, battery tray and fuel tank area.

r Disconnect the battery before you weld on this mower.

3.1.6 WHEN YOU PUT THE MOWER ON A TRAILER

a Be careful when you load or unload the mower on a trailer. Trailer must be wider than the mower and can carry

the weight of the mower.

b Use a full-width ramp to load or unload the mower on a trailer.

c Use straps, chains, cables or ropes to fasten the mower to the trailer. Both front and rear straps must be sent

down and toward sides of trailer.

d Make sure that all latches are correctly fastened.

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3 SAFETY

3.1.7 IMPORTANT SAFETY NOTES _______________________________________________

This safety alert symbol gives a warning of possible hazards.

DANGER - Indicates a dangerous condition that WILL cause death or injury unless it is prevented.

WARNING - Indicates a dangerous condition that CAN cause death or injury unless it is prevented.

CAUTION - Indicates a dangerous condition that can cause injury and property damage unless it is prevented. The

label can indicate work procedures that are not safe.

NOTICE - Indicates a condition that can cause damage to the property unless it is prevented. The label can indicate

work procedures that are not safe.

Some illustrations in this manual show the shields, guards or plates, removed. Do not operate this equipment without these devices correctly fastened in position.

WARNING

The OPC System on this mower prevents the operation of the mower unless a.) The parking brake is engaged. b.) The PTO switch is in the OFF position and c.) The steering control levers are in the Neutral position. The system will stop the engine if the operator leaves the operator position without: a.) The parking brake engaged and b.) the PTO switch in the OFF position.

NEVER operate the mower unless the OPC System operates correctly.

WARNING

1. Before you leave the operator position, for any reason:

a. Return the steering control levers to Neutral. b. Disengage all drives. c. Lower the cutting unit to the ground. d. Engage the parking brake. e. Stop the engine and remove the ignition key.

2. Keep your hands, feet and clothing away from moving parts. Wait for all movement to stop before you clean, adjust or service the mower.

3. Keep persons and animals away from the area of operation.

4. Never carry passengers.

5. Never operate the equipment without a correctly fastened grass deflector in position.

If additional information or service is needed, contact your Authorized Jacobsen Dealer. Your Dealer knows the current methods to service this equipment.

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SPECIFICATIONS 4

4Specifications

4.1 ENGINE SPECIFICATIONS __________________________________________________

SZT 2648 / SZT 2654

Make Briggs & Stratton

Model Vanguard

Type Four cycle, air cooled, Gasoline

Number of Cylinders 2

Bore and Stroke 3.3 in. (8.38 cm) x 2.89 in. (7.34 cm)

Total Displacement

49.42 in

Intake System Naturally Aspirated

Gross Intermittent Power 26 hp (19.39 kW) @ 3600 RPM

Compression Ratio 8.4:1

Maximum Speed 3650 ± 100 rpm (No Load)

Low Idle 1750 ± 100 rpm (No Load)

(0.81 l)

Rotation Clockwise viewed at flywheel

Fuel System 2 Barrel Float Feed Carburetor

Fuel 87 Octane Gasoline

Maximum 10% Ethanol

Injection System Magnetron

Spark Plug Gap 0.030 Inch (0.76 mm)

Engine Oil (API Class) SF, SG, SH, SJ or higher

Oil Pan Capacity 2.06 to 2.12 quarts (1.95 to 2.01 l)

Starter 12 Volt Solenoid Shift Electric Start

Alternator 12 Volt, 16 Amp

Dry Weight 91 lb. (41.3 kg)

Dimensions (Length x Width x Height)

19.94 x 18.53 x 22.89 in.

(50.65 x 47.07 x 58.14 cm)

Emission Regulation

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4 SPECIFICATIONS

4.2 DIMENSIONS AND WEIGHTS________________________________________________

SZT 2648 SZT 2654

A - Width of Cut 48 inch (121.9 cm) 54 inch (137.2 cm)

B - Maximum Width 64 inch (162.6 cm) 70 inch (177.8 cm)

C - Width with Chute Up 49 inch (124.5 cm) 55 inch (139.7 cm)

D - Height 48 inch (121.9 cm)

E - Total length Platform Down 79 inch (200.7 cm)

F - Total length Platform Lifted 67.5 inch (171.4 cm)

G - Wheel Base 49 inch (124.5 cm)

H - Front Wheel Track 34 inch (86.4 cm)

J - Rear Wheel Track 37 inch (94.0t cm)

Weight of unit 1087 lb. (493.1 kg) 1110 lb. (503.5 kg)

Tire Specifications

Rear Wheel (SZT 2648) Rear Wheel (SZT2654)

Tire Size Type Tire Pressure Tire Size Type Tire Pressure

23 x 9.5-12 Grassmaster 8-10 psi (0.55-0.69 BAR) 23 x 10.5-12 Grassmaster 8-10 psi (0.55-0.69 BAR)

Front Wheel (Standard Foam Filled)

Tire Size Type Tire Pressure

15 x 6-8 Ribbed N/A

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SPECIFICATIONS 4

G E

A B

SZT 2654SZT 2648

A B

J H C

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4 SPECIFICATIONS

4.3 MOWER SPECIFICATION ___________________________________________________

Battery: 12V, 300 CCA

Service Brake: Dynamic braking through the traction circuit

Parking Brake: Integrated in transmission

Fuel Tank: 6 U.S. Gallons (22.7 l)

Steering: Hand lever speed and direction controls for left and right rear wheel

Traction Drive: Belt driven dual hydrostatic Hydro-Gear

Cutting Unit Drive: Belt drive

Ground Speed: 0-8 mph (0-12.87 kph)

Reverse Speed: 0-8 mph (0-12.87 kph)

SZT 2648 Cutting Performance: 3.1 acres/hr. (1.25 hectares/hr) @8 mph (12.87 km/hr)

SZT 2654 Cutting Performance: 3.7 acres/hr. (1.5 hectares/hr) @8 mph (12.87 km/hr)

ZT-3400.

4.4 CUTTING UNIT SPECIFICATION _____________________________________________

SZT 2648 SZT 2654

Blade Length 17-7/8 inch (45.4 cm) 21-3/8 inch (54.3 cm)

Number of blades 3

Height of cut 1-1/2 to 4-1/2 in. (3.8 to 11.3 cm)

Height of cut adjustment A hand lever to lift or lower the cutting unit with a HOC pin installed in different holes for

specified HOC.

Blade Tip Speed

@ 3600 rpm engine speed

297.9 feet/second (90.8 meters/second) 290 feet/second (88.4 meters/second)

4.5 BELT SPECIFICATION _____________________________________________________

Traction Belt Part Number 200704, A-Section, Raw A56, 57.97 EL Belt

SZT 2648 Deck Belt Part Number 301160, B-Section, Wrapped, 123.82 EL Belt

SZT 2654 Deck BeltPart Number 301253, B-Section Wrapped, 136.22 EL Belt

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SPECIFICATIONS 4

4.6 RECOMMENDED LUBRICANTS ______________________________________________

Engine Oil:

API Classification grades SF, SG, SH, SJ or higher

Temperature Viscosity

Above 100° F (38° C) SAE 30 or Synthetic SAE 5W-30

40° to 100° F (4° to 38° C) SAE 30 or SAE 10W-30 or Synthetic SAE 5W-30

0° to 40° F (-18° to 4° C) SAE 5W-30 or SAE 10W-30 or Synthetic SAE 5W-30

Below 0° F (-18° C) SAE 5W-30 or Synthetic SAE 5W-30

Drive Axle Fluid:

The drive axle fluid is SAE 20W50 API Classification SL.

Grease:

NLGI Grade 2-EP Lithium Complex Grease containing Molybdenum Disulfide.

4.7 SLOPES _________________________________________________________________

DO NOT USE ON SLOPES GREATER THAN 15°. The 15° slope was calculated with static stability measurements according to the requirements of BS EN ISO 5395-3.

4.8 ACCESSORIES____________________________________________________________

4.8.1 STRIPING KIT _____________________________________________________________

Product number TBD

4.8.2 MULCHING KIT____________________________________________________________

48 Inch (121.2 cm) Cutting Unit Kit Number 902997

54 Inch (137.2 cm) Cutting Unit Kit Number 902996

4.8.3 ACCELERATOR BAGGER___________________________________________________

Kit Number TBD

4.9 SUPPORT LITERATURE ____________________________________________________

Contact your Jacobsen Dealer for a complete listing of literature available for your mower.

Operator’s Manual: 700507

Mower Parts Manual: 700532

Service & Repair Manual: TBD

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5 DECALS

30229

The OCDC should be in the downward position when vulnerable objects or property are in the vicinity of the machine during operation.

97072

DANGER

MAXIMUM TONGUE WEIGHT

100 lbs.

WARNING

800208

Serious injury or death can result from blade contact or from contacting the belts or pulleys with the engine running. Deck spindles may have a fan installed above or below the pulleys.

Do not operate the mower with the discharge chute or belt guards removed. Make sure the Interlock System is operates correctly.

5Decals

5.1 SAFETY DECALS _________________________________________________________

Understand the purpose of these decals. The decals are important to the safe operation of the mower. REPLACE THE DAMAGED DECALS IMMEDIATELY.

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800817

CAUTION

WHEN ADDING OIL FOR TRANSAXLES,

USE MULTIVISCOSITY SAE 20W-50 OIL

DO NOT ADD AUTOMATIC TRANSMISSION FLUID

OR HYDRAULIC FLUID!

THIS WILL VOID WARRANTY

CHECK OIL WHEN COLD. MAINTAIN OIL LEVEL TO THE COLD FILL

LINE ON THE RESERVIOR

DO NOT TOP OFF RESERVOIR!

OIL/FILTER CHANGE TO BE PERFORMED

BY AUTHORIZED JACOBSEN SERVICE DEALER ONLY!

Transaxle service interval: Initial 100 hrs., every 400 hrs thereafter

800935

MAX FILL

800726

Read the manual before you operate the mower

Pick up sticks, stones and other debris that can be thrown by the mower.

Wear eye protection when you operate the mower.

Wear ear protection when you operate the mower.

Keep bystanders away from the mower.

Be careful of debris thrown by the mower.

Use caution when you operate on slopes. Only operate on slopes with the ROPS in the vertical position.

Do not carry passengers.

800848

DO NOT OPERATE WITHOUT OPERATOR CONTROLLED DISCHARGE CHUTE (OCDC), DISCHARGE DEFLECTOR, ENTIRE GRASS COLLECTION SYSTEM, OR MULCHING KIT IN PLACE. DO NOT REMOVE GRASS CATCHER UNTIL BLADES HAVE STOPPED.

Only fill the fuel tank to the bottom of the fuel filler neck. Do not overfill the fuel tank.

DECALS 5

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5 DECALS

NEUTRAL RELEASE

800691

800692

800846

Fast Reverse

Slow Reverse

Slow Forward

Fast Forward

Neutral

Steering

Control Lever

Engaged

Position

Disengaged

Position

Fast

Slow

Engine

Throttle

5.2 INSTRUCTION DECALS ____________________________________________________

800900

PARKING

BRAKE

800844

”

4.5

4.25

”

3.5

3.75

”

3.25

”

2.5

2.75

”

2.25

”

1.75

1.5

”

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CONTROLS 6

6.2

6.4

6.3

6Controls

6.1 MOWER CONTROLS _______________________________________________________

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6 CONTROLS

N N

1/2

FUEL

STOP

CHOKE

6.2.1

6.2.2

6.2.3

6.2.4

6.2.5

6.2.6

6.2.7

6.2.8

6.2.9

6.2.10

6.2.11

OFF

RUN

START

6.2 CONTROL PANEL _________________________________________________________

6.2.1 IGNITION SWITCH _________________________________________________________

The ignition switch has three positions, OFF, RUN and START.

STOP

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CONTROLS 6

1/2

FUEL

6.2.2 PTO SWITCH _____________________________________________________________

The PTO switch is a 2-position knob type switch to engage and to disengage the cutting unit. The PTO switch must be in the OFF (down) position to start the engine.

Pull on the red knob to move the switch to the ON position. When the PTO switch is in the ON position, the cutting unit is engaged.

Always mow with the throttle lever in the fast position.

6.2.3 FUEL GAUGE _____________________________________________________________

The fuel gauge shows the hours of operation and the level of fuel.

The hour meter in the center of the gauge shows the hours of operation of the mower. When the ignition switch is in the RUN position, the hour meter is active.

The fuel gauge is above the hour meter. The fuel gauge shows the level of fuel in the tank. Do not allow the tank to become empty while you operate the mower.

6.2.4 THROTTLE LEVER_________________________________________________________

The throttle lever controls the engine speed. Always operate the mower at full throttle during normal operation.

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6 CONTROLS

CHOKE

Choke Position

Run Position

12 VOLT

6.2.5 CHOKE CONTROL_________________________________________________________

When you start a cold engine, pull the choke control to the choke position. Slowly push the choke lever to the RUN position when the engine becomes

warm.

NOTICE

The choke control is not necessary to start a warm engine.

6.2.6 12 VOLT OUTLET__________________________________________________________

The 12 Volt accessory outlet supplies power to 12 Volt accessories. Only use the 12 Volt outlet with the engine started to prevent a drained battery.

CAUTION

The 12 Volt accessory outlet is protected by a 10-Amp fuse. Do not use attachments with a power rating greater than 120 watts.

To prevent the risk of burns or fire, do not replace the 10-Amp fuse with a fuse with a greater amperage rating.

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CONTROLS 6

1/2

STOP

CHOKE

Forward Stop

Parking Brake

Right-Side Steering Control

Reverse Stop

Left-Side Steering Control

Engaged Position

Disengaged Position

6.2.7 CONTROL LEVER STOPS ___________________________________________________

The drive lever stops limit the forward and the reverse movement of the steering control levers.

The forward stop limits mower speed in the forward direction. The reverse stop limits the mower speed in the reverse direction.

6.2.8 STEERING CONTROL LEVERS ______________________________________________

The mower has separate wheel motors for each rear wheel. The right-side control lever controls the operation of the right-side wheel motor. The left-side control lever controls the operation of the left-side wheel motor. See 7.6 for the

operation of the steering control levers.

DANGER

To prevent personal injury or death, do not quickly move the steering control levers or suddenly start and stop the mower. You must use more caution when you turn the mower or when you operate on slopes.

The steering control levers must be in the Neutral position and the parking brake engaged to start the mower. The steering control levers must be pushed in the forward or reverse direction for the cutting units blades to rotate.

6.2.9 PARKING BRAKE__________________________________________________________

The parking brake locks the steering control levers in the Neutral position to prevent movement of the mower.

When the steering control levers are in the Neutral position, pull the parking brake lever to the engaged position to engage the parking brake. Push the parking brake lever to the disengaged position to disengage the parking brake.

The steering control levers must be in the Neutral position and the parking brake engaged to start the mower.

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6 CONTROLS

Button

HOC Lever

HOC Pin

HOC Holes

Discharge Chute Lever

Open

Closed

6.2.10 CUTTING UNIT HOC LEVER ________________________________________________

The cutting unit height of cut (HOC) lever lifts and lowers the cutting unit.

Install the HOC pin in the correct hole for the cutting height. To lower the cutting unit, press the button on the top of the lever and lower the lever

against the HOC pin. See 7.7 for the HOC pin hole chart.

NOTICE

To prevent damage to the HOC pin or the cutting unit, slowly lower the lever against the HOC pin. Do not allow the cutting unit to drop from the lifted position against the HOC pin.

To lift the cutting unit, pull the lever to the vertical position. When the cutting unit is lifted, the button on the top of the lever will lift and stop the lever.

6.2.11 DISCHARGE CHUTE LEVER________________________________________________

The discharge chute lever opens and closes the discharge chute located beneath the discharge deflector. When you mow around flower beds or edges of paths, the discharge chute can be closed to limit the discharge.

Never mow with the discharge deflector removed.

WARNING

The operator must be careful of persons and objects near the mower. Do not release the cut grass in the direction of persons or allow persons near the mower while in operation.

The cutting unit can discharge objects for long distances with the discharge deflector removed. Remember that the operator and/or owner are responsible for accidents or hazards that occur to other persons or their property.

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CONTROLS 6

Normal Operation

Position

Neutral Release

Position

Latch

Operator Platform

6.3 NEUTRAL RELEASE _______________________________________________________

Each wheel motor has a neutral release knob to move the mower without the engine running.

WARNING

The mower wheels will turn with the neutral release knobs in the release position and the parking brake disengaged. Do not move the neutral release knobs to the released position with the mower on a slope.

Lift up and pull the neutral release knob toward you to the released position.

Push the neutral release knob in and lower to return the mower to normal operation.

6.4 OPERATOR PLATFORM LATCH _____________________________________________

The mower can be operated with the operator standing on the operator platform or with the operator walking behind the mower.

When the operator walks behind the mower, the operator platform must be lifted. Lift the rear part of the platform until the platform is held by the latch.

To lower the platform, hold the platform with one hand and lift the latch. Slowly lower the platform.

CAUTION

To prevent injury or damage, lower the operator platform by hand. Do not let the platform drop from the lifted position.

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7 OPERATION

7Operation

7.1 DAILY INSPECTION________________________________________________________

CAUTION

The inspection must be done each day when the engine is turned off and all fluids are cold. Lower the cutting units to the ground, engage the parking brake, stop the engine and remove the ignition key.

Do a visual inspection of the mower. Look for indications of wear or loose hardware. Look for any components that are not included on the mower or damaged components. Check for fuel and oil leaks to make sure the connections are tight. Make sure that all hoses are in good condition.

Check the fuel supply and crankcase oil level. When the engine is cold, all fluids must be at the full level mark.

Check the engine oil cooler fins for dirt or grass. Clean with compressed air as required before you operate the mower.

Check all tires for the correct pressure.

Test the OPC system.

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OPERATION 7

7.2 OPC SYSTEM _____________________________________________________________

The OPC System prevents the engine to start unless the steering control levers are in the Neutral position, the parking brake is engaged and the PTO switch is in the OFF (Down) position. The system prevents cutting unit operation with

the PTO switch in the ON position and the steering control levers in the NEUTRAL position.

WARNING

Do not operate the equipment with the OPC System disconnected or the system does not operate correctly. Do not disconnect or prevent the operation of any switch.

Do each of these tests to make sure the Interlock System operates correctly. If any of the tests fail, stop the test and have the system inspected and repaired as shown below:

• The engine does not start during test 1

• The engine does start during tests 2, 3 and 4

• The operates during tests 5

Refer to the chart below for each test and follow the check () marks across the chart. Turn off the engine between each test.

TEST 1: The test shows the normal engine start procedure. The operator is on the platform, parking brake is engaged, the steering control levers are in the NEUTRAL position and the PTO switch is in the OFF (down) position. The engine will start.

TEST 2: The engine must not start if the PTO switch is in the ON position.

TEST 3: The engine must not start if the parking brake is disengaged.

TEST 4: The engine must not start if the steering control lever(s) is out of the NEUTRAL position.

TEST 5: Start the engine with the normal procedure. Make sure the steering control levers are in the Neutral position. Turn on the PTO switch. The cutting unit blades must not rotate.

Test PTO Switch OFF Parking Brake

Engaged

Yes No Yes No Yes No Yes N o

1 

2   

3 

4  

5 

Steering Control

Levers in Neutral

Engine Starts

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7 OPERATION

7.3 OPERATING PROCEDURE__________________________________________________

CAUTION

To prevent injury, always wear safety glasses, leather work shoes or boots, a hard hat and ear protection.

1. Always start the engine with the operator standing on the operator platform, never while next to the mower. Never start the engine with persons near the mower.

2. Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust fumes can increase to dangerous levels.

3. Keep your hands and feet away from moving parts and the cutting units. When possible, do not adjust the mower with the engine started.

4. Do not operate the mower with loose or damaged components. All components must be correctly fastened to the mower. Mow when the grass is dry to get the best results.

5. First cut in a test area so that you completely understand the operation of the mower and controls.

6. Inspect the area to find the safest procedure for the mower. Check the height of the grass, the type of terrain and the conditions of the surface. Each condition needs the correct adjustments and precautions.

7. Do not release the cut grass in the direction of persons or allow persons near the mower while in operation. The owner and operator are responsible for injuries caused to persons near the mower and any damage to their

property.

CAUTION

Remove all objects you can find before you operate the mower. Carefully enter a new area and always operate at speeds that allow you to control the mower safely.

8. Be careful when you operate near to gravel areas (roads, parking areas, cart paths). Stones released from the equipment can cause injuries to persons and cause damage to the equipment.

9. When you are not mowing grass, always turn off the PTO switch.

10. Before you move across or operate on the paths or roads, turn off the PTO switch, lift the cutting unit and travel at decreased speed. Look for traffic.

11. When you hit an object or mower starts to cause vibration that is not normal, inspect the mower for damage and make repairs.

WARNING

Before you clean, adjust or repair this equipment, always turn off the PTO switch, lower the cutting unit to the ground, engage the parking brake, stop the engine and remove the ignition key.

12. Travel at decreased speed and be careful when you operate on the slopes or near sharp edges.

13. When you drive in the reverse direction, look behind you and down to make sure the path is clear. Use caution when you go near corners, trees or other objects that can prevent a clear view.

14. Never use your hands to clean the blades. Use a brush to remove the grass clippings from the blades. The blades are sharp and can cause injuries.

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OPERATION 7

1/2

FUEL

STOP

CHOKE

Throttle Lever

PTO Switch

Ignition Switch

Choke

Steering Control Lever

Parking Brake

7.4 STARTING THE ENGINE ____________________________________________________

Start the engine with the operator on the platform, the PTO switch in the OFF position and the parking brake engaged. Remove your hands from the steering control levers.

Set the throttle lever to half throttle. If the engine is cold, move the choke to the choke position.

Turn the ignition switch to the RUN position. The gauge will show the fuel level and the engine operation hours.

Turn the ignition switch to the START position. Release the key when the engine starts. Allow 30 seconds between start tries to

allow the starter motor to become cool.

NOTICE

Do not hold the ignition switch in the START position for more than 10 seconds.

When the engine starts, move the choke to the RUN position. Allow the engine to become warm before you operate the engine at full throttle.

7.5 TO STOP THE ENGINE _____________________________________________________

To stop and park the mower in normal conditions:

1. Turn the PTO switch to the OFF position. Drive the mower to a flat and level area to park the mower.

2. Remove your hands from the steering control levers.

3. Lower the cutting unit to the ground. Engage the parking brake.

4. Turn the ignition switch to the OFF position and remove the key before you leave the mower.

If an emergency occurs and you must park the mower in the area of operation, follow the guidelines set by the grounds manager. If the mower is parked on a slope, chock or block the wheels.

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7 OPERATION

N N N N N N N N N N

N N N N N NN N N N

Neutral Forward Forward Left

Tu r n

Forward Right

Tu r n

Zero Radius

Left Turn

Neutral Reverse Reverse Left

Tu r n

Reverse Right

Tu r n

Zero Radius

Right Turn

7.6 DRIVING _________________________________________________________________

Read and follow all safety instructions contained in this manual when you operate the mower. When you operate in the reverse direction, look behind you to make sure you have a clear path. Do not mow in reverse.

Slowly and equally push both the right-side and left-side control levers toward the forward stop to drive the mower in the forward direction. The more the levers are pressed the more the forward speed is increased. Press the levers against

the forward stop for the maximum forward speed.

DANGER

Slowly and equally pull both the right-side and left-side control levers toward the reverse stop to drive the mower in the reverse direction. The more the levers are pulled the more the reverse speed is increased. Press the levers against the reverse stop for the maximum reverse speed.

To turn the mower to the left, push the right-side drive lever more than the left-side drive lever. The greater the difference in lever position, the sharper the mower will turn. To do a zero radius left turn, press the right-side lever toward the forward stop and pull the left-side lever toward the reverse stop.

To turn the mower to the right, push the left-side drive lever more than the right-side drive lever. The greater the difference in lever position, the sharper the mower will turn. To do a zero radius right turn, press the left-side lever toward the forward stop and pull the right-side lever toward the reverse stop.

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OPERATION 7

43658

7.7 HEIGHT OF CUT___________________________________________________________

The height of cut is determined by the location of the HOC pin. Engage the parking brake, stop the engine and remove the key before you change the HOC.

Use the chart to find the correct cutting height hole for the necessary HOC.

HOC HOC

Hole Hole

1 1-1/2 Inch (3.8 cm) 8 3-1/4 Inch (8.3 cm) 2 1-3/4 Inch (4.4 cm) 9 3-1/2 Inch (8.9 cm) 3 2 Inch (5.1 cm) 10 3-3/4 Inch (9.5 cm) 4 2-1/4 Inch (5.7 cm) 11 4 Inch (10.2 cm) 5 2-1/2 Inch (6.4 cm) 12 4-1/4 Inch (10.8 cm) 6 2-3/4 Inch (7.0 cm) Fully Raised 4-1/2 inch (11.4 cm) 7 3 Inch (7.6 cm)

7.8 MOWING_________________________________________________________________________

WARNING

To prevent injuries, when the blades rotate, keep your hands, feet and clothing away from the cutting unit.

NEVER use your hands to clean the cutting unit. Use a brush to remove grass from the blades. The blades can be sharp and can cause injury.

DO NOT operate the cutting unit without the discharge deflector installed.

To m o w:

1. Put the PTO switch in the ON position. The blades will start turning.

2. Press the button on the HOC lever and lower the cutting unit.

3. Push the steering control levers forward to drive the mower. Never mow in the reverse direction.

4. Slow down when you turn the mower or mow on slopes.

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7 OPERATION

0°

2-3/4°

5-3/4

/2°

15%

11-1/4°

4°

25%

16-3/4°

30%

19-1/4°

35%

1-3/

4°

40%

24-1/4°

45%

26-1/2°

50%

28-3/4°

55%

31°

60%

33°

65%

35°

70%

36-3/4°

75%

38-3/4°

80%

40-1/4°

85%

42°

90%

43-1/2°

95%

45°

100%

General slope of roadway embankment - 45° Steepest Grass Area - 31° Slope of the average roof - 19-1/4° 2nd Class highway maximum grade 4-1/2° Toll road or freeway - 1-3/4°

Grade

Degrees

7.9 MOWING ON SLOPES______________________________________________________

The mower is made to have good traction and to have good balance. Operate the mower with caution when you drive on a slope. If you drive on wet grass, the traction and steering

control of the mower is decreased.

WARNING

To make sure that the mower does not turn over, the safest method to drive on a slope is to drive vertically. Travel at a

15° Maximum

slow speed and do not make turns that are not necessary.

Check for hazards on the road that are not visible to the drivers. Keep the cutting unit lowered when you operate on the slopes.

15° Maximum

CAUTION

Do not operate the mower on the slopes greater than 15° or a 26.8% slope.

1. Always cut the grass with the engine at full throttle. Control the forward speed with the steering control levers to keep the correct performance.

2. If the mower moves to the side or the tires damage the turf, drive the mower on a slope with a decreased angle.

3. If the mower continues to move to the side and damage the turf, the slope is at an angle that is not safe. Do not continue to drive toward the top of the slope. Carefully drive toward the bottom of the slope.

4. When you drive toward the bottom of a slope with a high angle, lower the cutting unit to the ground. This procedure makes sure the mower does not turn upside down.

5. Correct tire pressure is necessary for maximum traction.

Rear - 8-10 psi (0.55-0.69 BAR)

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15° Maximum

OPERATION 7

How to calculate a slope:

Tools Required: Level (A), either 1 yard, or 1 meter long. Tape measure (B).

Use the level (A) and position it horizontally to measure the distance (C) with tape measure (B). Use the chart to calculate the slope angle or the percentage grade of the slope (D).

Height (C) Result (D)

Inches with 1 Yard Level (A) Millimeters with 1 Meter Level (A) Slope in Degrees Slope Grade %

100 5.7 10.0

150 8.5 15

200 11.3 20.0

7.5

225 12.7 22.5

9 250 14 25.0

275 15.4 27.5

300 16.7 30.0

325 18.0 32.5

350 19.3 35.0

375 20.6 37.5

400 21.8 40.0

425 23.0 42.5

475 25.4 47.5

18 500 26.6 50.0

600 31.0 60.0

36 1000 45.0 100

800 38.7 80.0

900 42.0 90

4.8 8.3

9.5 16.7

11.8 20.8

15.5 27.8

17.0 30.6

18.4 33.3

19.9 36.1

21.3 38.9

22.6 41.7

24 44.4

29.1 55.6

34.8 69.4

39.8 83.3

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7 OPERATION

7.10 TOWING THE MOWER _____________________________________________________

If the mower has a problem and the engine will not run, move the Neutral release knobs to the Neutral position and load the mower on a trailer. If a trailer is not available, tow the mower at a slow speed for short distances.

Be careful when you load or unload the mower on the trailer. Fasten the mower to the trailer to prevent the mower to move on the trailer. Engage the parking brake.

If the trailer is moved on the highway, inflate the tires to the maximum pressure recorded on the tire before you fasten the mower to the trailer. Decrease the tire pressure after the mower is removed from the trailer.

Disengage the parking brake.

Before towing, disengage the parking brake and make sure the cutting unit is lifted.

NOTICE

When you tow the mower, do not drive more than 2 mph (3.2 km/hr). Jacobsen recommends that you do not tow the mower for long distances.

When the mower gets to the service area, move the neutral release knobs to the normal operation position and engage the parking brake.

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8Maintenance and Lubrication Charts

8.1 MAINTENANCE CHART

Interval Item Section

MAINTENANCE AND LUBRICATION CHARTS 8

Mower Service Interval Chart

First 5 Hours • Replace engine oil

• Replace engine oil filter

• Check electrical wiring

• Lubricate spindles and casters

Each day (10 Hours) • Check Safety OPC System

• Check engine oil level

• Clean engine oil cooler

• Clean area around muffler and controls

Each week (50 Hours) • Check fuel lines and fittings

• Inspect parking brake and steering control lever linkage

• Inspect deck and drive belts

• Check for loose components

• Lubricate grease fittings

First 75 Hours • Replace drive axle fluid and filter (Two per mower) See 9.9

Each Two weeks (100

Hours)

• Clean or replace air filter

• Check engine exhaust system

• Replace engine oil and filter

Each month (250 Hours) • Check engine valve clearance (Briggs & Stratton Dealer)

• Check electrical wiring See 9.15

Each two months (400

Hours

• Replace fuel filter

• Replace drive axle fluid See 9.9

See 9.3 See 9.3

See 9.15

See 8.2

See 7.2 See 9.3

See 9.12

See 9.5

See 8.2

See 9.4 See 9.8 See 9.3

Yearly • Replace air filter

• Replace spark plugs

Grease Fittings

1. Caster Pivot (2) 2. Deck Spindle (3)

See 9.4

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8 MAINTENANCE AND LUBRICATION CHARTS

8.2 LUBRICATION CHART _____________________________________________________

8.3 FLUID REQUIREMENTS ____________________________________________________

Fluid Requirements

Quantity Type

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Engine Oil with Filter 2.06 to 2.12 quarts (1.95 to 2.01 l) SAE 10W-30 API Classification SJ

Drive Axle with Filter 2.41 quarts (2.28 liter) Each

Fuel 6 U.S. Gallons (22.7 l) 87 Octane Gasoline

(2 Per Mower)

SAE 20W-50 API Classification SL

Maximum 10% Ethanol

MAINTENANCE 9

9Maintenance

9.1 GENERAL PRECAUTIONS ________________________________________________________

WARNING

Before you clean, adjust or repair this equipment, push PTO switch to the OFF position, lower the cutting unit, engage the parking brake, stop the engine and remove the key.

Make sure the mower is parked on a solid and level surface. Never work on a mower that is lifted only by the jack. Always use the jack stands.

A qualified technician must always do adjustments and maintenance. If the correct adjustments can not be made, contact your Jacobsen Dealer.

Inspect the equipment according to the maintenance schedule and keep complete records.

a Keep the equipment clean.

b Keep all moving parts correctly adjusted and lubricated.

c Replace worn or damaged parts before you operate the mower.

d Keep all fluids at the correct level.

e Keep the shields in position and all hardware tight.

f Keep the tires correctly inflated.

When you make the adjustments or repairs, do not wear jewelry or loose fitting clothing.

Refer to the illustrations in the Parts Manual for the removal and assembly of parts.

When you discard hazardous materials (batteries, lubricants, fuel, anti-freeze), follow your local, state or federalrecommended procedures.

9.2 ENGINE __________________________________________________________________

IMPORTANT - The mower includes a separate Engine Manual prepared by the engine manufacturer. Read the Engine

Manual and know the operation and maintenance of the engine. When you follow the engine manufacturer instructions, you will make sure of the maximum service life of the engine. The replacement engine manuals are available from the engine manufacturer.

The operation and maintenance during the first 5 hours of a new engine can make a difference to the performance and life of the engine.

During the first 5 hours of operation, Jacobsen recommends the following.

• Allow the engine to reach a temperature of at least 140° F (60° C) before operation at full load.

• Check the engine oil level two times each day. Higher than normal oil use can occur during the first 5 hours.

• Change the engine oil and oil filter after the first 5 hours of operation.

• Refer to the Engine manual for specified maintenance intervals.

NOTICE

The mower operates and cuts correctly at the preset governor setting. Do not change the engine governor setting or over speed the engine.

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9 MAINTENANCE

ADD FULL

Dipstick

Level Indicator

Drain Hose

Filter

9.3 ENGINE OIL ______________________________________________________________

Check engine oil level

Check the engine oil level before you start the engine or at least five minutes after you stop the engine.

a Park the mower on a level surface.

b The dipstick is found at the right rear corner of the

engine. Remove the dipstick. Clean the dipstick with a cloth and replace in position.

c Remove the dipstick and check the oil level. The oil

level must be between the two level indicators on the dipstick.

Change Engine Oil and Filter

a Start the engine to increase the temperature, then

stop the engine.

b Disconnect the oil drain hose from the side of the

engine. Remove the oil drain cap.

c Lower the drain hose and drain the engine oil into a

container.

d Remove the oil filter.

e Let the engine oil flow into a container.

f Clean the filter area on the engine.

g Apply a thin layer of oil to the gasket on new filter.

Install the oil filter.

h Tighten the filter until the gasket contacts the oil filter adapter, then tighten an additional 1/2 to 3/4 turn. Only use

your hand to tighten the filter.

i Replace the oil drain cap and fill the engine with the correct quantity and grade of oil through the filler.

j Start the engine and check around the oil filter gasket for leaks.

k Stop the engine and check the engine oil level.

CAUTION

The engine oil can damage your skin. Use gloves when you use engine oil. If engine oil touches your skin, clean the area immediately.

Discard used engine oil as shown in local regulations.

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MAINTENANCE 9

Valve

Cap

Outer Element

Inner Element

9.4 ENGINE AIR FILTER _______________________________________________________

Do not remove the elements to inspect or clean. Removal of the filter that is not necessary increases the risk of dust and other particles to enter the engine.

Clean or replace the outer filter element every 100 hours. Replace the inner-safety element every third change of the outer filter.

When service is needed, first clean the outside of the filter housing, then remove the outer element. Only remove the inner-safety element if replacement is needed.

Clean the inside of the filter housing. Make sure dust and other particles do not get into the engine inlet hose.

Inspect the new elements. Do not use a damaged element and never use an incorrect element.

Assemble the inner and outer filter elements. Make sure the elements seat correctly.

Assemble the cap to the filter housing. Make sure the cap seals around the filter housing. The dust valve on the cap must be at the bottom of the filter. Fasten the cap with the two clips.

Check the air filter hoses for wear or damage. Make sure the hose clamps are tight and hold the hoses in position.

9.5 FUEL ____________________________________________________________________

Gasoline is flammable. Use caution when you add the fuel to the mower. Only use an approved container. The

spout on the container must fit inside the fuel filler neck. Never use the containers that are not approved to keep or transfer fuel.

WARNING

Refuel the mower before you start the engine. When the engine is in operation or while the engine is hot, never remove the fuel cap or add fuel to the mower.

Refuel outdoors only and do not smoke when you add fuel.

If the fuel spills, do not try to start the engine, but move the mower away from the area. Until fuel vapors are removed, do not allow the sparks, open flame or other types of ignition.

Never keep fuel containers near an open flame or any device that can cause the ignition of fuel or fuel vapors.

Always tighten the fuel tank cap and container cap after you add fuel.

Fill the fuel tank to the bottom of the filler neck.

Do not use premium gasoline or an oil-gasoline mixture. Use clean, fresh, regular unleaded gasoline, 85 octane minimum. When using blended fuel, do not use a blend with more than 10% ethanol. Under no circumstances should you use a blend with methanol. Refer to the engine’s operator manual for fuel recommendations when using blended fuel.

Check fuel hoses and clamps every 50 hours. Replace fuel hoses and clamps at first indication of wear or damage.

Keep fuel according to your local, state or federal regulations and instructions from your fuel supplier.

Never allow the tank to become empty. The level of fuel is shown on the gauge.

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9 MAINTENANCE

9.6 BATTERY ________________________________________________________________

Before you service the battery, make sure the ignition switch is in the OFF position and the key is removed.

CAUTION

When you service the battery, always use the tools with insulation, wear protective glasses and protective clothing.

Discard used batteries as shown in your local regulations.

WARNING

The battery contains corrosive acid. Prevent contact with the battery acid.

Always wash your hands after you service a battery.

WARNING

The battery posts, battery terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and other reproductive harm.

Tighten the battery cables on the battery terminals, To prevent corrosion, apply a layer of silicone dielectric grease to battery terminals and ends of cables. Keep the vent caps and battery terminal covers in position.

Before you do any welding operation on the mower, always disconnect the battery cables from the battery and the connectors from the controllers.

Confirm the battery polarity before you connect or you disconnect the battery cables.

When you install the battery, always connect the positive (RED) battery cable before the negative (BLACK) battery cable.

When you remove the battery, always disconnect the negative (BLACK) battery cable before the positive (RED) battery cable.

Jump-Starting the Mower

a Before you try to jump-start the mower, check the condition of the drained battery.

b Connect the positive (+) battery terminal of the charged battery to positive battery terminal of the drained battery.

c Connect the negative (–) battery terminal of the charged battery to frame of vehicle with the drained battery.

WARNING

The battery can release hydrogen gas that is explosive. To decrease the risk of an explosion, prevent sparks near the battery. Always connect the negative jumper cable to the frame of the mower with the drained battery.

d When the cables are connected, start the engine on the vehicle with the good battery, then start the mower.

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MAINTENANCE 9

9.7 CHARGE THE BATTERY __________________________________________________________

WARNING

Charge the battery in an area with good airflow. The battery can release hydrogen gas that is explosive. To prevent an explosion, keep any device that can cause sparks or flames away from the battery.

When the battery charger is turned on, to prevent injury, stay away from the battery. A battery that is damaged can cause an explosion.

Read the battery charger manual for specified instructions on the operation of the charger.

When possible, remove the battery from the mower before you charge the battery. If the battery is not sealed, check and make sure the level of the electrolyte is above the plates in all of the cells.

Make sure the battery charger is turned OFF, then connect the battery charger to the battery terminals as specified in the battery charger manual.

Always turn OFF the battery charger before you disconnect the battery charger from the battery terminals.

9.8 ENGINE EXHAUST _______________________________________________________________

WARNING

The exhaust fumes contain carbon monoxide. The carbon monoxide in the exhaust fumes can increase to dangerous levels. To protect you from carbon monoxide poisoning, inspect the complete exhaust system every month and replace damaged components immediately.

NEVER operate the engine without enough ventilation.

The temperature of the exhaust components can be greater than 300° F (149° C). To prevent the burns, do not touch a hot exhaust system.

If you sense a change in the color or sound of the exhaust, stop the engine immediately. Identify the problem and have the system repaired.

Torque all exhaust manifold hardware equally. Tighten or replace the exhaust clamps.

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9 MAINTENANCE

Vent Plug

Expansion Bottle

Filter

Filter Guard

9.9 DRIVE AXLE FLUID ________________________________________________________

Drain and replace the drive axle fluid and filter after the first 75 hours and each 400 hours.

Always replace the filter when you replace the drive axle fluid.

a Clean the area around the vent plug, expansion bottle cap and

filter to prevent dirt to enter the drive axle.

b Place a container capable of holding two gallons (8 liters) under

the drive axle.

c Remove the 3 filter guard screws, the filter guard and the filter.

Remove the cap from the expansion bottle. Allow the fluid to drain into the container.

d After the oil has drained, clean the filter mounting surface. Apply a

thin film of oil to the filter gasket and assemble the filter to the drive axle. Tighten the filter until the gasket contacts the filter base, then tighten an additional 3/4 to 1 turn. Only use your hand to tighten the filter.

e Assemble the filter guard and the guard screws. Torque the screws to 65 in. lb. (7.3 Nm). f Remove the vent plug from the drive axle. Add fluid to the expansion bottle until the oil level reaches the bottom

of the vent. Assemble the vent plug. Torque the plug to 180 in. lb. (20.3 Nm)

g Add oil until the fluid is at the FULL COLD line on the expansion bottle. Assemble the expansion bottle cap. h Repeat steps a~f for the other drive axle.

FULL COLD

After the drive axle fluid is changed, the air must be removed from the drive axles. Lift the rear wheels off the ground. Support the mower with jack stands.

WARNING

Make sure the mower is parked on a solid and level surface. Never work on a mower that is supported only by the jack. Always use jack stands.

Put chocks in front of and behind the front wheels.

CAUTION

When you remove the air from the drive axles, the rear wheels will turn. To prevent injury, use caution to prevent contact with the wheels.

a Start the engine and disengage the parking brake. b Move the neutral release knobs to the Neutral Released position. Slowly move the steering control levers from

the Neutral Position, to the full forward position, to the full reverse position and return the handles to the Neutral position. Repeat 5 to 6 times.

c Move the neutral release knobs to the Normal Operation position. Slowly move the steering control levers from

the Neutral Position, to the full forward position, to the full reverse position and return the handles to the Neutral position. Repeat 5 to 6 times.

d Stop the engine and add fluid to the expansion bottle until the fluid is at the FULL COLD line. e If needed, repeat steps a~d until the drive axles operate at normal noise levels and the tires move smoothly in the

forward and reverse directions.

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MAINTENANCE 9

9.10 TIRES ___________________________________________________________________

Keep the tires correctly inflated to increase tire life. Inspect the tread wear.

Check the tire pressure each day, while the tires are cool. Use an accurate low-pressure tire gauge.

Keep the rear tires inflated to 8-10 psi (0.55-0.69 BAR).

CAUTION

DO NOT try to put a tire on a rim unless you have the correct training, tools and experience. Incorrect mounting can cause an explosion which can cause injury.

9.11 WHEEL MOUNTING PROCEDURE ____________________________________________

WARNING

Make sure the mower is parked on a solid and level surface. Never work on a mower that is supported only by the jack. Always use jack stands.

If only the front or behind the mower is lifted, put the chocks in front of and behind the wheels that are not lifted.

Remove dirt, grease and oil from the stud threads. Do not lubricate threads.

Put the wheel on the hub. Inspect the wheel to make sure of full contact between surface of wheel and hub.

Tighten all hardware with your fingers, then torque hardware in a criss-cross order. When possible, tighten nuts in the top position.

Check and torque hardware each day until torque is kept at 65-75 ft.lb. (88-102 Nm).

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9 MAINTENANCE

Normal

Blade

Bent

Blade

Grooved

Blade

Cracked

Blade

9.12 AIR COOLING SYSTEM ____________________________________________________

The engine on the mower is an air-cooled engine. Dirt and other objects can decrease the air flow and cause the engine to overheat, cause bad performance and decreased engine life.

NOTICE

Do not use water to clean the engine. Water can cause contamination in the fuel system. Use a brush or clean cloth to clean the engine.

Use a brush or a dry cloth to clean the air intake area.

Keep throttle linkage, springs and controls clean.

Use compressed air to remove debris from the engine oil cooler fins.

Refer to the Engine manual for additional information.

9.13 INSPECTING BLADES _____________________________________________________

Every 50 hours of operation or when the cutting unit is removed from the mower, carefully inspect the blades to make sure the blades are in good condition. Replace any blade that has

bends, grooves or cracks.

CAUTION

Be careful when you check blades to prevent pinching hands and fingers between ends of the blades.

WARNING

Never try to correct or repair a damaged blade. Always replaced a damaged blade.

The bends, grooves or cracks can cause a piece of the blade to become loose and be discharged from the mower. The broken blade pieces can cause injury to persons or property damage.

A bent blade can have a small crack that can increase and cause a piece of the blade to break. The bent blades can cause vibration and other stress on the mower.

The dust or sand particles can wear a dangerous groove in the blade between the air vanes and the flat part of the blade. The groove can quickly increase in size and allow a piece of the blade to break.

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MAINTENANCE 9

Maximum 1/2 in. (1.3 cm)

9.14 SHARPENING BLADES _____________________________________________________

Put a wooden block between the blade and cutting unit housing to prevent the blade to rotate.

WARNING

The cutting unit blades can have sharp edges. To prevent injury, use caution when you service or hold the blade.

When you remove more than one half inch of material, the blade tip can break and be discharged from the mower. The broken blade pieces can cause injury to persons or property damage.

When you prepare or sharpen the blade, do not follow the original grind pattern. Grind new cutting edges at an angle. If the maximum of one half inch (1.3 cm) blade loss has occurred, do not sharpen more, replace the blade.

To prevent a blade that is not balanced, make sure an equal amount of material is removed from both ends of the blades. A blade that is not balanced will cause vibration and can damage the mower. Use a blade balancer to check the blade after you sharpen.

Torque center blade bolt to 125-135 ft.Lb. (169 to 183 Nm).

9.15 ELECTRICAL SYSTEM____________________________________________________________

CAUTION

Always turn the ignition switch to the off position and remove the negative (BLACK) battery cable before you inspect or service the electrical system.

General precautions to decrease electrical problems are -

• Make sure that all the connections are clean and correctly fastened.

• Check the OPC system, fuses and circuit breakers at normal intervals. If the OPC system does not operate correctly and you can not correct the problem, contact an authorized Jacobsen Dealer.

• Keep the wiring harness away from hot surfaces and moving parts.

• Check the battery and the alternator.

• Do not wash or pressure spray around electrical connections and components.

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9 MAINTENANCE

9.16 CARE AND CLEANING _____________________________________________________

Clean the mower and cutting units after each use. To prevent damage to the engine, do not wash the mower with the engine in operation. When possible, clean the mower with compressed air.

NOTICE

Do not wash any part of the mower that is hot. Do not use the high-pressure spray or steam. Use cold water and automotive cleaners.

Use compressed air to clean the engine and the engine oil cooler fins. Do not pressure wash the engine.

Use clean water to wash your equipment.

NOTICE

To use salt water or drain water is known to cause rust and corrosion of metal parts and can cause damage or failure. This damage is not included by the factory warranty.

Do not spray water at the control panel, ignition switch or other electrical components.

Clean all plastic or rubber parts with a weak soap solution or use commercially available rubber cleaners.

To keep the original high polish of the fiberglass parts, wax with a good grade of one-step cleaner wax.

Repair damaged metal surfaces and use Jacobsen touch-up paint. Apply wax to the equipment for maximum paint protection.

CAUTION

To prevent fire, clean grass clippings and dirt from the cutting units, drives, engine and exhaust components.

WARNING

Never use your hands to clean cutting units. Use a brush to remove grass clippings from the blades. The blades are

sharp and can cause injuries.

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MAINTENANCE 9

9.17 MOWER STORAGE ________________________________________________________

General

• Clean the mower and lubricate. Repair and paint damaged or open metal.

• Inspect the mower, tighten all hardware, replace worn or damaged components.

• Clean the tires and keep the mower so that the load is not on the tires. If the mower is not on the jack stands, check tires at normal intervals and add air when needed.

• Keep the mower and all accessories clean, dry and protected from the elements. Never keep the mower near an open flame or spark which can cause ignition of the fuel or fuel vapors.

Battery

• Remove, clean and keep the battery in the upright position on a surface that is not metal in a cool dry location. To prevent increased battery discharge, do not keep the battery on a metal surface.

• Check and charge the battery every 60 to 90 days.

• Keep the battery in a cool dry location. To decrease the self discharge rate, the temperature must not be more than 80° F (27° C) or less than 20° F (-7° C).

Engine

• Change the engine oil and filter.

• Clean the outside surface of the engine. Paint bare metal or apply a thin layer of rust preventative oil.

• Add a fuel stabilizer to prevent the fuel to become stale. See your fuel supplier for instructions. Start the engine. Operate the engine for two minutes to circulate the stabilizer throughout the fuel system.

Cutting Units

• Completely clean the cutting units. Repair and paint any damaged or bare metal surfaces.

• Lubricate all grease fittings and friction points.

• Apply a thin layer of rust preventative oil to the sharpened edges of the blades.

CAUTION

The cutting unit blades can have sharp edges. To prevent injury, use caution when you service or hold the blade.

After Storage

• Check and install the battery. If necessary, charge the battery.

• Check or service the fuel filter and air cleaner

• Check the level of engine oil and drive axle fluid.

• Fill the fuel tank with fuel.

• Make sure the tires are correctly inflated.

• Remove all oil from the blades.

• Start the engine at 1/2 throttle. Allow the engine to become warm and lubricated.

WARNING

Never operate the engine without enough ventilation or in an enclosed area. The carbon monoxide in the exhaust

fumes can increase to dangerous levels.

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10 ADJUSTMENTS

N N

Speed Limit Screws

Bottom Screw

Lower Hole

Forward Stop

10Adjustments

10.1 GENERAL PRECAUTIONS ________________________________________________________

WARNING

Before you clean, adjust or repair this equipment, push PTO switch to the OFF position, lower the cutting unit to the ground, turn on the parking brake switch, stop the engine and remove the key.

Make sure the mower is parked on a solid and level surface. Never work on a mower that is lifted only by the jack. Always use the jack stands.

A qualified technician must always do adjustments and maintenance. If the correct adjustments can not be made, contact your Jacobsen Dealer.

Inspect the equipment according to the maintenance schedule and keep complete records.

a Keep the equipment clean.

b Keep all moving parts correctly adjusted and lubricated.

c Replace worn or damaged parts before you operate the mower.

d Keep all fluids at the correct level.

e Keep the shields in position and all hardware tight.

f Keep the tires correctly inflated.

When you make the adjustments or repairs, do not wear jewelry or loose fitting clothing.

Refer to the illustrations in the Parts Manual for the removal and assembly of parts.

When you discard hazardous materials (batteries, lubricants, fuel, anti-freeze), follow your local, state or federalrecommended procedures.

10.2 FORWARD SPEED ADJUSTMENT____________________________________________

The cutting quality is improved at speeds lower than the full transport speed of the mower. The local turf condition may require a different speed.

To adjust the forward speed, adjust the speed limit screws in the control panel. Turn the screws to the right-side to decrease the forward speed. Turn the screws toward the left side to increase the forward speed.

You can change the position of the forward stop to decrease the maximum forward speed of the mower. Remove the bottom screw from both sides of the speed stop. Rotate the forward stop toward the operator position until you can install the screw in the lower hole. Assemble both bottom screws.

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ADJUSTMENTS 10

Rear-Height Nuts

Front-Height Nuts

Yo k e

Cable

Discharge Chute

10.3 DECK LEVEL ADJUSTMENT_________________________________________________

Adjust the deck level so that the blade height is the same on both sides of the mower.

Park the mower on a flat and level surface. Fully raise the cutting unit. Rotate each blade until it is parallel with the mower.

CAUTION

The cutting unit blades can have sharp edges. To prevent injury, use caution when you service or hold the blade.

Be careful when you move the blades to prevent pinching hands and fingers between ends of the blades.

When you rotate one blade, other blades can rotate.

Measure the distance between the ground and the front edge of all three blades. The distance for all blades must be within 1/8 inch (0.3 cm) of each other.

To adjust the level of the deck, adjust the position of the front- height nuts.

• Loosen the upper nut and tighten the bottom nut to increase the distance between the blade and the ground.

• Loosen the bottom nut and tighten the upper nut to decrease the distance between the blade and the ground.

Adjusted the position of the rear-height nuts as needed so that the blades are parallel to the ground.

10.4 DISCHARGE CHUTE CABLE ______________________________________________________

WARNING

The discharge deflector is not shown for clarity. Never operate the mower with the discharge deflector removed.

Adjust the discharge chute cable so that the discharge chute completely opens and closes with the lever.

Disconnect the cable yoke from the discharge chute. The discharge chute will move to the closed position.

Push the discharge chute lever forward to the closed position.

Adjust the cable yoke until the clevis pin can be installed in the yoke and the discharge chute. Additional adjustment can be made at the lever end of the cable if needed.

Move the discharge chute lever to the open position. Check that the discharge chute is completely open.

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10 ADJUSTMENTS

Control Linkage

Neutral Screw

Control Arm

10.5 NEUTRAL ADJUSTMENT ___________________________________________________

The mower must not move with the steering control levers in the Neutral position and the parking brake disengaged. The neutral adjustment must be done separately for the left and right side axles.

To adjust the neutral position:

1. Lift the mower so the rear wheels are off the ground. Disengage the left side control linkage from the control arm.

WARNING

Make sure the mower is parked on a solid and level surface. Never work on a mower that is supported only by the jack. Always use jack stands. Put chocks in front of and behind the front wheels.

To prevent injury, do not adjust the neutral setting with the engine running.

CAUTION

When you check the drive axle neutral adjustment, the rear wheels may turn. To prevent injury, use caution to prevent contact with the wheels.

2. Start the engine, move the throttle lever to the fast position and disengage the parking brake. Note if the left rear wheel rotates and the direction the wheel rotates. Engage the parking brake and stop the engine. Do not adjust the neutral setting with the engine running.

a If the wheel does not rotate, proceed with Step 5.

b If the wheel does rotate, proceed with Step 3.

3. Loosen the neutral screw and rotate the control arm 5° in the opposite direction that the wheel turned. Tighten the neutral screw.

4. Start the engine and check the neutral adjustment. Repeat Step 3 until the wheel does not rotate.

5. Torque the neutral screw to 180 in. lb. (15 ft. lb.) (20 Nm). Connect the left side control linkage to the control arm.

6. Repeat the adjustment procedure on the right side axle.

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ADJUSTMENTS 10

4.6

8.8

10.9

12.9

10.6 TORQUE SPECIFICATION ___________________________________________________

NOTICE

The torque values included in these charts are approximate and are for reference only. Use these torque values at your risk. Jacobsen is not responsible for any loss, claim or damage caused by these charts. Always use caution

with torque values.

Jacobsen uses Grade 5 (Inch) and Grade 8.8 (Metric) Plated bolts, unless a note is given. Always check the marks on the head of the bolts for the bolt grade. For tightening plated bolts, use the value given for lubricated.

AMERICAN NATIONAL STANDARD FASTENERS

SIZE UNITS

GRADE 5 GRADE 8

Lubricated Dry Lubricated Dry Lubri-

#6-32 in-lb (Nm) – 20 (2.3) – – 7/16-14 ft-lb (Nm) 37 (50.1) 50 (67.8) 53 (71.8) 70 (94.9)

#8-32 in-lb (Nm) – 24 (2.7) – 30 (3.4) 7/16-20 ft-lb (Nm) 42 (56.9) 55 (74.6) 59 (80.0) 78 (105)

#10-24 in-lb (Nm) – 35 (4.0) – 45 (5.1) 1/2-13 ft-lb (Nm) 57 (77.2) 75 (101) 80 (108) 107 (145)

#10-32 in-lb (Nm) – 40 (4.5) – 50 (5.7) 1/2-20 ft-lb (Nm) 64 (86.7) 85 (115) 90 (122) 120 (162)

#12-24 in-lb (Nm) – 50 (5.7) – 65 (7.3) 9/16-12 ft-lb (Nm) 82 (111) 109 (148) 115 (156) 154 (209)

1/4-20 in-lb (Nm) 75 (8.4) 100 (11.3) 107 (12.1) 143 (16.1) 9/16-18 ft-lb (Nm) 92 (124) 122 (165) 129 (174) 172 (233)

1/4-28 in-lb (Nm) 85 (9.6) 115 (13.0) 120 (13.5) 163 (18.4) 5/8-11 ft-lb (Nm) 113 (153) 151 (204) 159 (215) 211 (286)

5/16-18 in-lb (Nm) 157 (17.7) 210 (23.7) 220 (24.8) 305 (34.4) 5/8-18 ft-lb (Nm) 128 (173) 170 (230) 180 (244) 240 (325)

5/16-24 in-lb (Nm) 173 (19.5) 230 (26.0) 245 (27.6) 325 (36.7) 3/4-10 ft-lb (Nm) 200 (271) 266 (360) 282 (382) 376 (509)

3/8-16 ft-lb (Nm) 23 (31.1) 31 (42.0) 32 (43.3) 44 (59.6) 3/4-16 ft-lb (Nm) 223 (302) 298 404 315 (427) 420 (569)

3/8-24 ft-lb (Nm) 26 (35.2) 35 (47.4) 37 (50.1) 50 (67.8) 7/8-14 ft-lb (Nm) 355 (481) 473 (641) 500 (678) 668 (905)

METRIC FASTENERS

SIZE UNITS Non Critical

Lubricated Dry Lubricated Dry Lubricated Dry Lubricated Dry

M4 Nm (in-lb)––––––3.83 (34)5.11 (45)2.0 (18)

M5 Nm (in-lb) 1.80 (16) 2.40 (21) 4.63 (41) 6.18 (54) 6.63 (59) 8.84 (78) 7.75 (68) 10.3 (910 4.0 (35)

M6 Nm (in-lb) 3.05 (27) 4.07 (36) 7.87 (69) 10.5 (93) 11.3 (102) 15.0 (133) 13.2 (117) 17.6 (156) 6.8 (60)

M8 Nm (in-lb) 7.41 (65) 9.98 (88) 19.1 (69) 25.5 (226) 27.3 (241) 36.5 (323) 32.0 (283) 42.6 (377) 17.0 (150)

M10 Nm (ft-lb) 14.7 (11) 19.6 (14) 37.8 (29) 50.5 (37) 54.1 (40) 72.2 (53) 63.3 (46) 84.4 (62) 33.9 (25)

M12 Nm (ft-lb) 25.6 (19) 34.1 (25) 66.0 (48) 88.0 (65) 94.5 (70) 125 (92) 110 (81) 147 (108) 61.0 (45)

M14 Nm (ft-lb) 40.8 (30) 54.3 (40) 105 (77) 140 (103) 150 (110) 200 (147) 175 (129) 234 (172) 94.9 (70)

GRADE 5 GRADE 8

Dry Lubri-

cated

Dry

Fasteners into Aluminum

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11 PROBLEM SOLVING

11Problem Solving

11.1 GENERAL________________________________________________________________

The problem solution chart lists basic problems that can occur during start and operation of the mower. For complete information about the hydraulic and electrical systems, contact your Jacobsen Dealer.

Symptoms Possible Causes Action

Engine will not start.

Engine hard to start or runs poorly.

Engine stops. 1. Fuel tank empty. 1. Fill with fresh fuel and bleed fuel lines.

Engine overheating.

Battery not holding charge.

Cutting unit does not cut evenly.

1. Parking brake disengaged or power take-off switch ON.

2. Battery low on charge or defective.

3. Fuel tank empty or dirty. 3. Fill with fresh fuel. Change fuel filter. Bleed fuel lines.

4. Fuse blown. 4. Replace fuse.

5. Relay(s) defective. 5. Test and replace relay.

1. Fuel level low, fuel or fuel filter dirty.

2. Air cleaner dirty. 2. Inspect and replace air filter.

3. Engine problem. 3. Consult engine manual.

2. Interlocks not set before leaving operator’s position.

1. Air intake restricted. 1. Clean engine cooling air intake and fins.

1. Loose or corroded battery terminals.

2. Low electrolyte. 2. Refill to correct level.

3. Charging system defective. 3. See engine manual.

1. Deck not level. 1. Check that decks are level. Check and adjust cutting height.

2. Engine speed too low. 2. Check engine speed with throttle in its fast position.

3. Mow speed not adjusted for turf conditions.

1. Check OPC System and start-up procedure.

2. Inspect condition of battery and battery connections.

1. Fill with fresh fuel. Change fuel filter.

2. Engage parking brake and set power take-off switch to OFF.

1. Inspect and clean terminals.

3. Adjust mow speed for best cut.

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QUALITY OF CUT 12

TN0159

12Quality of Cut

12.1 QUALITY OF CUT PROBLEM SOLVING________________________________________

Make a “test cut” to check the performance of the mower before you start the repairs.

This area must have turf conditions that are known and do not change across the area. This type of area allows an accurate inspection of the performance of the mower to be made.

Another “test cut” must be done after the repairs or adjustments to confirm the mower’s performance.

Before you do a “test cut” to show the appearance and performance of the mower, the following items must be confirmed. These items make sure that the “test cut” is accurate.

1. Cut (Ground) Speed

2. Blade Sharpness

3. Height-of-Cut (HOC)

4. Blade Speed

12.2 WASHBOARDING__________________________________________________________

Washboarding is a repeated pattern of different cutting heights, that causes an appearance that is like a wave. In most cases, the wave tip-to-tip distance is approximately 6-8 in. (15-20 cm). A change in the color (from light-todark) is also seen.

This cause of this condition can be a movement from side

-to-side in the cutting unit. This condition is found on mowers with cutting units held under the mower, but other cause can give the same result.

Another cause of Washboarding is differences in the type of turf.

NOTE: Arrow indicates direction of travel.

Probable Cause Remedy

The cut (ground) speed is higher than normal. Reduce the cut (ground) speed.

Cut in the same direction. Change the direction of cut more frequently.

Not enough engine speed, engine speed is not set to

Check/adjust the engine speed.

specification.

Belt Slipping. Check cutting unit belt adjustment.

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12 QUALITY OF CUT

TN0221

12.3 STEP CUTTING ___________________________________________________________

Step cutting occurs when grass is cut higher on one side of a cutting unit than the other side. Step cutting can occur when one cutting unit is higher than another cutting unit.

The wear of mechanical parts can cause step cutting.

NOTE: Arrow indicates direction of travel.

Probable Cause Remedy

The cutting unit movement is prevented. Check and remove the cutting unit movement obstruction.

Differences in turf density Change the direction of cut.

Mower ride height is uneven side to side. Check and adjust tire inflation pressure.

Cutting unit height is uneven side to side. Check and adjust for deck level.

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QUALITY OF CUT 12

TN0222

12.4 SCALPING _______________________________________________________________

Scalping is a condition in which areas of grass are cut shorter than the adjacent areas. The area can be light green or brown. A low HOC setting or turf that is not level can cause scalping.

NOTE: Arrow indicates direction of travel.

Probable Cause Remedy

HOC (height-of-cut) set is lower than normal. Check and adjust the HOC. See 7.7

Turf is not level and the mower can not follow the turf. Change the direction of cut.

Grass is higher than the cutting unit capacity. Cut the grass more frequently.

Cut (ground) speed is higher than the mower can cut. Reduce the cut (ground) speed.

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12 QUALITY OF CUT

TN0223

12.5 STRAGGLERS ____________________________________________________________

Stragglers are separated blades of grass the are not cut, or are cut incorrectly.

NOTE: Arrow indicates direction of travel.

Probable Cause Remedy

Edge of the cutting blade(s) are not sharp. Sharpen the blade(s). See 9.14

Cut (ground) speed is higher than normal Reduce the cut (ground) speed.

The grass is higher than the level at which the mower can cut correctly.

Cut in the same direction. Change the direction of cut more frequently.

The blade speed is too slow Operate the mower with the engine at full throttle. Inspect

Cut the grass more frequently.

the cutting unit belt.

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QUALITY OF CUT 12

TN0224

12.6 STREAKS ________________________________________________________________

A streak is a line of grass that is not cut. The cause of a streak can be a damaged blade.

NOTE: Arrow indicates direction of travel.

Probable Cause Remedy

Damaged blade(s). Replace the blade(s). See 9.13

The tires compresses the grass before the grass is cut. Check and adjust the tire inflation pressure.

The blades are not installed correctly. Check to make sure the correct blade is installed on each

motor.

The mower compresses the wet grass before the grass is cut.

Cut the grass when grass is dry.

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12 QUALITY OF CUT

TN0225

12.7 WINDROWING ____________________________________________________________

Windrowing is the deposit of clippings increased at one end of cutting unit(s) or between cutting units. Windrowing can make a line in the direction of travel.

NOTE: Arrow indicates direction of travel.

Probable Cause Remedy

The grass is higher than the level at which the mower can cut correctly.

Mowing the grass while grass is wet. Cut when grass is dry.

Grass collecting on mower or cutting unit frame. Clean the cutting unit(s) grass deflector.

Cut the grass more frequently.

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NOTES 13

13Notes

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Jacobsen, A Textron Company 11108 Quality Drive, Charlotte, NC 28273 www.Jacobsen.com 800-848-1636

When Performance Matters.

™

Equipment from Jacobsen is built to exacting

standards ensured by ISO 9001 and ISO 14001

registration at all of our manufacturing locations.

A worldwide dealer network and factory trained

technicians backed by Genuine Jacobsen Parts provide reliable, high-quality product support.

Jacobsen ZT90023, ZT90024 Safety, Operation & Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Contents

3.1 HOW TO OPERATE SAFELY ______________________________________________________

3.1.1 SAFE OPERATION

3.1.2 PREPARATION

3.1.3 OPERATION

3.1.4 SAFE HANDLING OF FUELS

3.1.5 MAINTENANCE AND STORAGE

3.1.6 WHEN YOU PUT THE MOWER ON A TRAILER

Parking Brake

Discharge Chute Lever

Neutral Release

7.8 MOWING_________________________________________________________________________

8.1 MAINTENANCE CHART

Fluid Requirements

9.1 GENERAL PRECAUTIONS ________________________________________________________

9.7 CHARGE THE BATTERY __________________________________________________________

9.8 ENGINE EXHAUST _______________________________________________________________

9.15 ELECTRICAL SYSTEM____________________________________________________________

10.1 GENERAL PRECAUTIONS ________________________________________________________

10.4 DISCHARGE CHUTE CABLE ______________________________________________________