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Promaster 300
Gravely Promaster 300 Service Manual
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2
Table of Contents
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
5
Section 3 - Specifications
7
Section 4 - General Maintenance & Adjustments
8
Controls and Features
8
Filling the Fuel Tank
9
Checking the Hydraulic Fluid
9
Checking Fasteners
9
Lubrication
9
Adjustment of Transmission Neutral
9
Adjustment of Direction Control Pedal
10
Section 5 - Engine
11
Engine Troubleshooting
11
Engine Removal
12
Engine Installation
12
Section 6 - Mower Deck
13
Installing Mower
13
Removing Mower
13
Adjust Height of Cut (60" Mower)
13
Adjust Height of Cut (50" Mower)
14
Deck Drive Belt Replacement
14
Spindle Replacement
15
Sharpen Blades
15
Section 7 - Steering & Controls
16
Directional Control Cable
16
Directional Control Pedal
16
Steering Cable Replacement
16
Steering Shaft Removal
17
Brake Cable Replacement
17
Brake Lever
17
Brake Pivot and Brake Arm
18
Section 8 - Hydraulic System
19
Filter Change
19
Hydraulic Hoses
19
Hydraulic Tank
21
Lift Cylinder
21
Lift Pump
21
Pump Housing
21
Hydraulic Valve Pressure Adjustment
22
Hydraulic Valve
22
Section 9 - Drive Train
23
Transmission Removal
23
Eaton 851 Transmission
24
Axle Housing Disassembly
25
Motor Rotor Disassembly
26
Pump and Motor Rotor Inspection
27
Transaxle Reassembly
28
Transaxle with Dump Valve
28
Transaxle with Charge Pump
29
Cover Reassembly
30
Axle Housing Reassembly
31
Fluid Recommendations
32
Replacing the Transmission Belt
32
Front Wheel
33
Rear Wheel and Hub
33
Section 10 - Fuel System
35
Fuel System Troubleshooting
35
Fuel Tank Removal
35
Fuel Tank Installation
35
Section 11 - Power Take-Off (PTO)
36
Replacing the PTO Clutch Belt on Models with Idler Springs
36
Clutch Removal
36
Clutch Installation
36
Section 12 - Electrical
37
Tools
37
Electrical Measurements
37
Battery
38
Switches
40
Solenoid and Relays
41
Lighting Circuits
42
Fuses
42
Diodes and Rectifiers
42
Electric Clutch
42
Checking the PTO Clutch
43
Promaster 300 Electrical
43
Interlock Switch
44
Fuse Holder
44
Time Delay Module
44
PTO Switch
44
Continuity Diagrams
45
Wiring Diagrams
48
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Owner's/Operator's Manual
22 pages
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Gravely Promaster 300 Specifications
General
Engine Displacement
725 cc
Transmission
Hydrostatic
Deck Type
Fabricated
Engine
Kohler Command Pro
Cutting Height
1.5 - 5 inches
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