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Gravely
Lawn Mower
988091
Gravely 988091 Service Manual
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Pr
o 100/150/200
08484000 06/00
Printed in USA
Ser
vice Man
ual
Models 988001-007, 059, 060, 062, 063, 069-072, 074, 075,
077-082, 085, 087, 088, 309
2
Table of Contents
Default Chapter
1
Service Manual
1
Table of Contents
2
Section 1 - Introduction
3
The Manual
3
Service and Replacement Parts
3
Product Registration
3
Unauthorized Replacement Parts
3
Disclaimer
3
Technical Service Communications
3
Section 2 - Safety
4
Safety Alerts
4
Signal Words
4
Notations
4
Practices and Laws
4
Required Operator Training
4
Preparation
4
Cleaning and Storage
4
Safety Rules
4
Clean Unit
6
Section 3 - Specifications
7
Section 4 - General Maintenance & Adjustments
12
Controls and Features
12
General Lubrication
14
Checking Fasteners
14
Check Tires
14
The Steering Levers
14
The Steering Lever Latches
14
Adjusting the Levers
15
Adjusting the Shift Lever
15
Adjusting the PTO Clutch
16
Adjusting the Roller Chain
17
Section 5 - Engine
18
Engine Troubleshooting
18
Checking Engine Oil
19
Changing Oil Filter
19
Air Cleaner
19
Check Spark Plug
19
Engine Removal
19
Engine Installation
19
Section 6 - Steering and Controls
20
Steering Controls
20
Operator Presence Control
20
Section 7 - Drive Train
21
Troubleshooting
21
Transmission
21
Transmission Removal
21
Replacing the Transmission Belt
21
Traction Clutch
22
Replacing the Traction Belts
23
Replacing the Pto Clutch Belt
24
Electric Clutch
25
Wheel Removal
25
Section 8 - Fuel System
26
Fuel System Troubleshooting
26
Fuel Pump
26
Fuel System Contamination
26
Fuel Tank
26
Section 9 - Electrical
27
Tools
27
Electrical Measurements
27
Battery
28
Switches
30
Solenoid and Relays
31
Lighting Circuits
32
Fuses
32
Diodes and Rectifiers
32
Electric Clutch
32
Checking the PTO Clutch
32
Interlock Switch
33
Fuse Holder
33
Pro 200 Check-Out
33
Continuity Diagrams
37
Key Switch
38
Pto Switch
38
Wiring Diagram
41
Electrical System
44
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Gravely 988091 Specifications
General
Brand
Gravely
Model
988091
Category
Lawn Mower
Language
English
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