Professional 2-Wheel Tractor
Service Manual
Models 985103,104, 105, 107 - 115, 117
08483800 08/00 Printed in USA
TABLE OF CONTENTS
Section 1 - Introduction . . . . . . . . . . . . . . . . . . . 1-3
1.1 The Manual. . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2 Service And Replacement Parts. . . . . . . . . 1-3
1.3 Product Registration . . . . . . . . . . . . . . . . . . 1-3
1.4 Unauthorized Replacement Parts. . . . . . . . 1-3
1.5 Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.6 Technical Service Communications . . . . . . 1-3
1.7 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Section 2 - Safety . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.1 Safety Alerts . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.2 Signal Words. . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.3 Notations. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.4 Practices And Laws . . . . . . . . . . . . . . . . . . 2-4
2.5 Maintenance And Storage . . . . . . . . . . . . . 2-4
2.6 Safety Rules . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.7 Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2.8 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
2.9 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Section 3 - Specifications . . . . . . . . . . . . . . . . . 3-6
Section 4 - General Maintenance
& Adjustments . . . . . . . . . . . . . . . . . . . . . . 4-10
4.1 Controls And Features . . . . . . . . . . . . . . . 4-10
4.2 Filling The Fuel Tank. . . . . . . . . . . . . . . . . 4-10
4.3 General Lubrication . . . . . . . . . . . . . . . . . 4-11
4.4 Forward-Reverse Clutch Adjustment . . . . 4-11
4.5 Hi/Low Gear Clutch Adjustment . . . . . . . . 4-12
4.6 Steering Brake Adjustment
(Applicable Models) . . . . . . . . . . . . . . . . . 4-12
4.7 PTO Brake Adjustment . . . . . . . . . . . . . . . 4-13
4.8 Slip Clutch Adjustment . . . . . . . . . . . . . . . 4-14
Section 5 - Engine . . . . . . . . . . . . . . . . . . . . . . 5-15
5.1 Engine Troubleshooting . . . . . . . . . . . . . . 5-15
5.2 Checking Engine Oil . . . . . . . . . . . . . . . . . 5-16
5.3 Changing Oil . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.4 Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . 5-16
5.5 Engine Removal And Installation . . . . . . . 5-17
5.6 Engine Maintenance . . . . . . . . . . . . . . . . . 5-17
5.7 Engine Storage . . . . . . . . . . . . . . . . . . . . . 5-17
Section 6 - Steering & Controls . . . . . . . . . . . 6-18
6.1 Handlebar Assembly. . . . . . . . . . . . . . . . . 6-18
6.2 Steering Brakes (Optional) . . . . . . . . . . . . 6-19
6.3 Adjusting Brakes . . . . . . . . . . . . . . . . . . . . 6-19
6.4 Power Take Off Control. . . . . . . . . . . . . . . 6-22
6.5 Range Shift Control (Two Speed Axle) . . . 6-22
Section 7 - Drive Train . . . . . . . . . . . . . . . . . . . 7-23
7.1 Transmission Trouble Analysis . . . . . . . . . 7-23
7.2 Clutch Adjustment. . . . . . . . . . . . . . . . . . . 7-24
7.3 Transmission Removal . . . . . . . . . . . . . . . 7-24
7.4 Forward-Reverse Clutch &
Planetary System . . . . . . . . . . . . . . . . . . . 7-24
7.5 First -Second Gear, Clutch And Planetary 7-24
7.6 Differential. . . . . . . . . . . . . . . . . . . . . . . . . 7-25
7.7 Differential Removal . . . . . . . . . . . . . . . . . 7-25
7.8 Power Take Off (PTO). . . . . . . . . . . . . . . . 7-28
Section 8 - Fuel System. . . . . . . . . . . . . . . . . . 8-29
8.1 Fuel System Troubleshooting . . . . . . . . . . 8-29
8.2 Fuel Pump . . . . . . . . . . . . . . . . . . . . . . . . 8-30
8.3 Fuel System Contamination . . . . . . . . . . . 8-30
8.4 Fuel Tank . . . . . . . . . . . . . . . . . . . . . . . . . 8-30
Section 9 - Electrical . . . . . . . . . . . . . . . . . . . . 9-31
9.1 Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31
9.2 Electrical Measurements. . . . . . . . . . . . . . 9-31
9.3 Safety Interlock System . . . . . . . . . . . . . . 9-32
9.4 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-32
9.5 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
9.6 Solenoid And Relays. . . . . . . . . . . . . . . . . 9-35
9.7 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36
9.8 Diodes And Rectifiers . . . . . . . . . . . . . . . . 9-36
9.9 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . 9-37
9.10 Continuity Diagram . . . . . . . . . . . . . . . . . 9-38
9.11 12 HP Electric Start - Kohler . . . . . . . . . . 9-39
9.12 8 HP Manual Start - Kohler . . . . . . . . . . . 9-40
9.13 8 HP Electric Start - Kohler . . . . . . . . . . . 9-41
9.14 16 HP Electric Start - Briggs . . . . . . . . . . 9-42
9.15 Robin Engines . . . . . . . . . . . . . . . . . . . . 9-43
2
SECTION 1 - INTRODUCTION
1.1 THE MANUAL
The purpose of this manual is to provide complete instructions for service, maintenance, disassembly, repair, and installation of the mechanical components for the unit.
Dealer trained service personnel should use this manual as a supplement to and reminder of the training sessions conducted by the company.
Read all information for servicing a part or system before repair work is started to avoid needless disassembly.
Operation
Before operation of the unit, carefully and completely read manuals supplied with the unit. The contents will provide you with an understanding of safety instructions and controls during normal operation and maintenance.
Safety Messages
For your safety and the safety of others always read, understand, and follow all DANGER, WARNING, and CAUTION messages found in manuals and on safety decals.
Directional Reference
All reference to left, right, front, or rear are given from the operator in the operator position and facing the direction of forward travel.
1.2 SERVICE AND REPLACEMENT PARTS
When ordering publications, replacement parts, or making service inquiries, know the Model and Serial numbers of your unit and engine.
Numbers are located on the product registration form in the unit literature package. They are printed on a serial number label, located under the hood of your unit.
1.3 PRODUCT REGISTRATION
A warranty registration card must be filled out, signed, and returned at time of purchase. This card activates the warranty. Claims meeting requirements during limited warranty period will be honored.
Specific Model and Serial Numbers are on a label located on the frame of your Tractor and on a label located on the product registration form. Record those numbers below and transfer the label from the product registration to place indicated below. Use these numbers whenever parts or service is required.
1.4 UNAUTHORIZED REPLACEMENT PARTS
Use only Gravely replacement parts. The replacement of any part on this vehicle with anything other than a Gravely authorized replacement part may adversely affect the performance, durability, or safety of this unit and may void the warranty. Gravely disclaims liability for any claims or damages, whether warranty, property damage, personal injury, or death arising out of the use of unauthorized replacement parts.
1.5 DISCLAIMER
Gravely reserves the right to discontinue, make changes to, and add improvements upon its products at any time without public notice or obligation. The descriptions and specifications contained in this manual were in effect at printing. Equipment described within this manual may be optional. Some illustrations may not be applicable to your unit.
1.6 TECHNICAL SERVICE COMMUNICATIONS
Gravely Technical Service communicates information to the field using Service Letters, Service Bulletins, Product Notices, and Campaigns. Each communication signifies a type of information and priority. The dealer is responsible to carry out the directive provided in the communication. The types of communication are:
Service Letter - General technical information for the dealer. Technical information on how to service the product and product improvements.
Service Bulletin - Notification to update products to resolve certain issues or a notification of a policy change.
Product Notices - Notification of limited product located in a certain region. This is a limited distribution to only those who received the product involved.
Campaigns - Notification of a safety related issue. All products must be updated and are tracked by the factory until all units are corrected.
1 -3
1.7 PREPARATION
Before starting any removal of parts, proper preparation is very important for efficient work. A clean work area at the start of each job will allow you to perform service repairs easily and quickly.
To reduce the incidence of misplaced tools or parts, place removed components with all attaching hardware
in the disassembly order on a clean work surface. Organization is a key part of proper reassembly.
Tools, instruments, and parts needed for the job should be gathered before work is started. Interrupting a job to locate tools or parts is a needless delay.
SECTION 2 - SAFETY
2.1 SAFETY ALERTS
Look for these symbols to point out important safety precautions. They mean:
Attention!
Personal Safety Is Involved!
Become Alert!
Obey The Message!
2.2 SIGNAL WORDS
The safety alert symbol is used in decals on the unit and with proper operation procedures in this manual. They alert you to the existence and relative degree of hazards.
Understand the safety message. It contains important information about personal safety on or near the unit.
DANGER: IMMINENTLY HAZARDOUS SITUATION! If not avoided, WILL RESULT in death or serious injury.
WARNING: POTENTIALLY HAZARDOUS SITUATION! If not avoided, COULD RESULT in death or serious injury.
CAUTION: POTENTIALLY HAZARDOUS SITUATION! If not avoided, MAY RESULT in minor or moderate injury. It may also be used to alert against unsafe practices.
2.3 NOTATIONS
NOTE: General reference information for proper operation and maintenance practices.
IMPORTANT: Specific procedures or information required to prevent damage to unit or attachment.
2.4 PRACTICES AND LAWS
Practice usual and customary safe working precautions, for the benefit of yourself and others. Understand and follow all safety messages. Be alert to
unsafe conditions and the possibility of minor, moderate, or serious injury or death. Learn applicable rules and laws in your area.
2.5 MAINTENANCE AND STORAGE
Keep the equipment in good condition. Maintain it as directed in this manual. Check all hardware at regular intervals.
Use only Gravely accessories, attachment and replacement parts.
Do not overspeed the engine. Do not override the governor.
Before making any repairs, adjustments inspections or cleaning unit disengage the PTO, turn off and remove the ignition key and wait for all motion to stop.
To reduce fire hazard and overheating, keep equipment free of grass, leaves, debris or excessive lubricants.
Worn out mufflers can result in fire or explosion and should be replaced immediately.
Never store equipment with gasoline in tank inside a building where fumes may reach an open flame or spark. Allow engine to cool before storing in any enclosure.
2.6 SAFETY RULES
Improper use of this tractor can injure people and damage the equipment. People using or servicing this tractor must read and follow the instructions in this manual.
It is important to understand that this manual and any other Gravely instruction manuals do not cover every possible danger. It is impossible for Gravely to know of all possible dangers in operating and servicing the tractor and attachments.
The purchaser must give these instructions to the people operating and maintaining this tractor. These people must use eye and foot protection.
2.7 TRAINING
Read this manual, the attachment manual and the engine manual carefully before operating unit.
2 -4
Learn the location and function of all controls.
Learn how to use the controls to stop the wheels and attachment quickly in an emergency.
Understand and follow each danger, warning, caution and instruction decal installed on this product.
Never permit children to operate the Two-Wheel Tractor. Do not allow adults to operate it without proper instruction. Safe operation of this equipment requires your complete and unimpaired attention at all times. Do not operate unit after or during the consumption of drugs or alcohol.
Keep all people and animals away from the operating area.
2.8 PREPARATION
Use caution with gasoline. Gasoline is very flammable and its vapors are explosive. Keep it in a clean, tight and approved (Red) container. Never put gasoline in the fuel tank while the engine is running or hot. Clean up spilled gasoline before starting engine. Do not fill fuel tank indoors. Never allow smoking materials, sparks or flame (match, pilot light, etc.) near mower or fuel container. Replace fuel tank cap and fuel container cap securely.
Inspect area of operation and remove all material which could be thrown by the attachment such as stones, sticks, wires and other foreign objects.
When hauling the equipment, connect the chassis to the transporting vehicle. Never connect from control levers, rods, or like items that could be damaged.
Replace all parts that become damaged or lost.
Wear hand, foot, head, ear and eye protection. Do not wear loose clothing, which might get caught in rotating parts of the unit.
Before making adjustments, cleaning, removing obstructions or servicing the tractor or attachment move the PTO to "OFF", turn the ignition switch to "OFF", remove the ignition key and wait until all moving parts completely stop.
WARNING: Always block wheels and know that jack stands or blocks used are stable, strong, or secure and will hold the weight of the unit during maintenance.
2.9 OPERATION
Be certain that all shields, guards, and interlock switches are in the correct position and operating properly.
Before starting the engine, put the PTO lever in the "OFF" position and the gear shift lever in the neutral "N" position.
Check the operation of the operator presence controls before operating the tractor. With either the PTO or the direction control lever engaged, the engine should run
only if at least one of the operator presence switches is depressed.
Do not use the equipment in the dark without adequate lighting.
Keep away from moving parts. Stay clear of the attachment whenever the engine is running.
Do not let people other than the operator near the operating equipment. Never direct disengage the attachment drive when moving the tractor to and from work areas.
Use a slow speed and engage the shift lever slowly when operating on slopes.
Travel across slopes, not up and down. Use extreme caution when changing direction on slopes. Do not operate on steep slopes.
Look for and keep away from hazards, such as dropoffs. Stay alert for holes, rocks and other hidden hazards in the area of operation.
After hitting an object, disengage the PTO, turn off and remove the ignition key and wait for all motion to stop. Check for damage. Repair any damage before restarting unit.
Look behind when operating in reverse. Look for people and hazards.
Operate only from the operator’s position, just behind the handlebars.
If there is a sudden change in the sound or vibration of the equipment, disengage the PTO, turn off and remove the ignition key, wait for all motion to stop and check for damage. Repair any damage or failure before restarting unit.
Never run the engine indoors except to move it outside. Exhaust fumes are dangerous.
Go slowly on slick surfaces. Always be sure of your footing, keep a firm grip on the handlebars and walk, never run.
Follow traffic laws when operating on or near a road.
Before leaving the operator’s position, put the PTO lever in the "OFF" position, turn off and remove ignition key. Move the shift control to first gear position.
Do not touch parts which might be hot from operation. Before attempting to maintain, adjust or service allow such parts to cool.
2 -5
SECTION 3 - SPECIFICATIONS
Model Number |
985103 |
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985104 |
985105 |
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985107 |
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Description |
8HP Gear Drive |
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8HP Gear Drive |
8HP Gear Drive |
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12 HP Gear Drive |
Brakes |
Optional, individual, 7" (17.8 cm) x 1.75" (4.4 cm) drum type |
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Steering |
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Manual, optional power steering kit available |
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Turning Radius |
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Zero (with steering kit) |
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Minimum Uncut Circle |
Zero |
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Zero |
Zero |
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Zero |
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Optional Tire Sizes |
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-Stud Tread |
4" x 8", 4 ply |
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4" x 8", 4 ply |
4" x 8", 4 ply |
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4" x 8", 4 ply |
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-Trac Tread |
4" x 8", 4 ply |
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4" x 8", 4 ply |
4" x 8", 4 ply |
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4" x 8", 4 ply |
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-Turf-Chief |
18" x 6.5" x 8", 4 ply |
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18" x 6.5" x 8", 4 ply |
18" x 6.5" x 8", 4 ply |
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18" x 6.5" x 8", 4 ply |
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-Turf-Saver |
18" x 8.5" x 8", 4 ply |
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18" x 8.5" x 8", 4 ply |
18" x 8.5" x 8", 4 ply |
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18" x 8.5" x 8", 4 ply |
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-Semi-Pneumatic |
16" x 5" x 3", 4 ply |
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16" x 5" x 3", 4 ply |
16" x 5" x 3", 4 ply |
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16" x 5" x 3", 4 ply |
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Tire Pressure |
18 psi |
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18 psi |
18 psi |
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18 psi |
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Battery |
12 volt, BCI group |
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12 volt, BCI group |
12 volt, BCI group |
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12 volt, BCI group |
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Engine |
Kohler |
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Kohler |
Kohler |
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Kohler |
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-Type |
K181T |
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K181T |
K181S |
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M12T (PS471525) |
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-Horsepower |
8HP at 3600 RPM |
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8HP at 3600 RPM |
8HP at 3600 RPM |
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12HP at 3600 RPM |
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-Number of Cylinders |
One |
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One |
One |
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One |
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-Displacement |
18 cu. in. (305.4 cc) |
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18 cu. in. (305.4 cc) |
18 cu. in. (305.4 cc) |
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29 cu. in. (476.5 cc) |
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-Fuel |
Gasoline, 87 minimum |
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Gasoline, 87 minimum |
Gasoline, 87 minimum |
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Gasoline, 87 minimum |
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octane |
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octane |
octane |
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octane |
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-Fuel Capacity |
1.25 gals. (4.7 L) |
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1.25 gals. 4.7 L) |
1.25 gals. (4.7 L) |
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2.0 gals. (4.7 L) |
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-Cooling |
Air |
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Air |
Air |
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Air |
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-Air Filter |
Dual Element with |
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Dual Element with |
Dual Element with |
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Dual Element with |
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PreCleaner |
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PreCleaner |
PreCleaner |
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PreCleaner |
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-Lubrication |
Splash System |
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Splash System |
Splash System |
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Splash System |
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-Oil Type |
See Engine Manual |
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See Engine Manual |
See Engine Manual |
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See Engine Manual |
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-Oil Capacity |
2.5 pts. (1.2 L) |
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2.5 pts. (1.2 L) |
2.5 pts. (1.2 L) |
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2.5 pts. (1.2 L) |
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-Oil Filter |
N/A |
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N/A |
N/A |
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Spin on oil filter |
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-Charging System |
Recoil |
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Recoil |
12 volt, 15 amp |
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12 volt, 15 amp |
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Transmission |
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-Type |
All gear planetary transmission with fully enclosed PTO and immersion clutch |
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-Oil Type |
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SAE 30W API service class SF or higher |
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-Oil Capacity |
5 qts (4.7 L) |
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5 qts (4.7 L) |
5 qts (4.7 L) |
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5 qts (4.7 L) |
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-Cooling |
Air |
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Air |
Air |
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Air |
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-Number of Speeds |
2 forward/2 reverse |
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4 forward/4 reverse |
4 forward/4 reverse |
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4 forward/4 reverse |
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Speeds (with 18" tires) |
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-Forward |
1st - 2.0 mph (3.2 kph) |
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1st - 1.3 mph (2.1 kph) |
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1st - 1.4 mph (2.3 kph) |
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2nd - 2.5 mph (4.0 kph) |
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2nd - 1.7 mph (2.7 kph) |
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2nd - 1.8 mph (2.9 kph) |
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3rd - 2.6 mph (4.2 kph) |
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3rd - 2.7 mph (4.4 kph) |
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4th - 3.4 mph (5.5 kph) |
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4th - 3.7 mph (6.0 kph) |
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-Reverse |
1st - 1.9 mph (3.1 kph) |
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1st - 1.2 mph (2.0 kph |
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1st - 1.3 mph (2.1 kph) |
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2nd - 2.4 mph (3.9 kph) |
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2nd - 1.6 mph (2.6 kph) |
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2nd - 1.7 mph (2.7 kph) |
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3rd - 2.4 mph (3.9 kph) |
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3rd - 2.6 mph (4.2 kph) |
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4th - 3.1 mph (5.0 kph) |
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4th - 3.3 mph (5.3 kph) |
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PTO |
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-Type |
Internal Slip Clutch |
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Internal Slip Clutch |
Internal Slip Clutch |
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Internal Slip Clutch |
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-Drive |
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All gear shaft driven off high/low planetary |
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-Output Speeds |
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High - 1179 RPM, low - 888 RPM at 3300 engine RPM |
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Construction |
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Cast-iron transmission case with 7-gauge framing |
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3 -6
Model Number |
985108 |
|
985109 |
985110 |
|
985111 |
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Description |
12HP Gear Drive |
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16HP Gear Drive |
8HP Gear Drive |
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8HP Gear Drive |
Brakes |
Optional, individual, 7" (17.8 cm) x 1.75 (4.4 cm) drum type |
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Steering |
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Manual, optional power steering kit available |
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Turning Radius |
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Zero (with steering kit) |
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Minimum Uncut Circle |
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Zero |
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Optional Tire Sizes |
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-Stud Tread |
4" x 8", 4 ply |
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4" x 8", 4 ply |
4" x 8", 4 ply |
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4" x 8", 4 ply |
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-Trac Tread |
4" x 8", 4 ply |
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4" x 8", 4 ply |
4" x 8", 4 ply |
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4" x 8", 4 ply |
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-Turf-Chief |
18" x 6.5" x 8", 4 ply |
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18" x 6.5" x 8", 4 ply |
18" x 6.5" x 8", 4 ply |
|
18" x 6.5" x 8", 4 ply |
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|
-Turf-Saver |
18" x 8.5" x 8", 4 ply |
|
18" x 8.5" x 8", 4 ply |
18" x 8.5" x 8", 4 ply |
|
18" x 8.5" x 8", 4 ply |
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|
-Semi-Pneumatic |
16" x 5" x 3", 4 ply |
|
16" x 5" x 3", 4 ply |
16" x 5" x 3", 4 ply |
|
16" x 5" x 3", 4 ply |
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Tire Pressure |
18 psi |
|
18 psi |
18 psi |
|
18 psi |
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Battery |
12 volt, BCI group |
|
12 volt, BCI group |
None |
|
12 volt, BCI group |
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Engine |
Kohler |
|
Briggs & Stratton |
Kohler |
|
Kohler |
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-Type |
M12S (PS471529) |
|
303447 |
PS-301058 |
|
PS-30159 |
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-Horsepower |
12HP at 3600 RPM |
|
16 HP at 3600 RPM |
8 HP at 3600 RPM |
|
8 HP at 3600 RPM |
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-Number of Cylinders |
One |
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Two |
One |
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One |
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-Displacement |
29 cu. in. (477 cc) |
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29.3 cu. in. (480 cc) |
18 cu. in. (305.4 cc) |
|
18 cu. in. (305.4 cc) |
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-Fuel |
Gasoline, 87 minimum |
|
Gasoline, 87 minimum |
See Engine Manual |
|
See Engine Manual |
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octane |
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octane |
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-Fuel Capacity |
2.0 gals. (7.5 L) |
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1.5 gals. (5.7 L) |
1.25 gals. (4.7 L) |
|
1.25 gals. (4.7 L) |
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-Cooling |
Air |
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Air |
Air |
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Air |
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-Air Filter |
Dual Element with |
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Dual Element with |
Dual Element with |
|
Dual Element with |
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PreCleaner |
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PreCleaner |
PreCleaner |
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PreCleaner |
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-Lubrication |
Splash System |
|
Full pressure pump with |
Splash System |
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Splash System |
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oil filter |
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-Oil Type |
See Engine Manual |
|
See Engine Manual |
See Engine Manual |
|
See Engine Manual |
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|
|
|
|
-Oil Capacity |
2.5 pts. (1.2 L) |
|
3.0 pts. (1.4 L) |
2.5 pts. (1.2 L) |
|
2.5 pts. (1.2 L) |
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-Oil Filter |
Spin on oil filter |
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Spin on oil filter |
Spin on oil filter |
|
Spin on oil filter |
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-Charging System |
12 volt, 15 amp |
|
12 volt, 16 amp |
Recoil |
|
12 volt, 15 amp |
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Transmission |
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||
-Type |
All gear planetary transmission with fully enclosed PTO and immersion clutch |
|||||
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||
-Oil Type |
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SAE 30W API service class SF or higher |
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||
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-Oil Capacity |
5 qts (4.7 L) |
|
5 qts (4.7 L) |
5 qts (4.7 L) |
|
5 qts (4.7 L) |
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-Cooling |
Air |
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Air |
Air |
|
Air |
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-Number of Speeds |
2 forward/2 reverse |
|
4 forward/4 reverse |
4 forward/4 reverse |
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4 forward/4 reverse |
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Speeds |
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-Forward |
1st - 1.4 mph (2.3 kph) |
|
1st - 1.4 mph (2.3 kph) |
1st - 1.4 mph (2.3 kph) |
|
1st - 1.4 mph (2.3 kph) |
|
2nd - 1.8 mph (2.9 kph) |
|
2nd - 1.8 mph (2.9 kph) |
2nd - 1.8 mph (2.9 kph) |
|
2nd - 1.8 mph (2.9 kph) |
|
3rd - 2.7 mph (4.4 kph) |
|
3rd - 2.7 mph (4.4 kph) |
3rd - 2.7 mph (4.4 kph) |
|
3rd - 2.7 mph (4.4 kph) |
|
4th - 3.7 mph (6.0 kph) |
|
4th - 3.7 mph (6.0 kph) |
4th - 3.7 mph (6.0 kph) |
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4th - 3.7 mph (6.0 kph) |
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-Reverse |
1st - 1.3 mph (2.1 kph) |
|
1st - 1.3 mph (2.1 kph) |
1st - 1.3 mph (2.1 kph) |
|
1st - 1.3 mph (2.1 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
2nd - 1.7 mph (2.7 kph) |
2nd - 1.7 mph (2.7 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
3rd - 2.6 mph (4.2 kph) |
3rd - 2.6 mph (4.2 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
4th - 3.3 mph (5.3 kph) |
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4th - 3.3 mph (5.3 kph) |
4th - 3.3 mph (5.3 kph) |
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4th - 3.3 mph (5.3 kph) |
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PTO |
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-Type |
Internal Slip Clutch |
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Internal Slip Clutch |
Internal Slip Clutch |
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Internal Slip Clutch |
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-Drive |
All gear shaft driven off |
|
All gear shaft driven off |
All gear shaft driven off |
|
All gear shaft driven off |
|
high/low planetary |
|
high/low planetary |
high/low planetary |
|
high/low planetary |
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Output Speeds |
|
High - 1179 RPM, low - 888 RPM at 3300 engine RPM |
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|||
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||
Construction |
|
|
Cast-iron transmission case with 7-gauge framing |
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||
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3 -7
Model Number |
985112 |
|
985113 |
|
985114 |
|
985115 |
|
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Description |
12 HP |
|
12 HP |
|
16 HP |
|
8.5 HP |
|
Gear Drive |
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Gear Drive |
|
Gear Drive |
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Gear Drive |
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Brakes |
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|
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7 x 1.75" Drum Type |
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N/A |
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Steering |
|
|
Manual, optional power steering kit available |
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|||
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Turning Radius |
|
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Zero (with steering kit) |
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|||
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||
Minimum Uncut Circle |
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Zero |
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||
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Optional Tire Sizes |
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-Stud Tread |
4.00-8 |
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4.00-8 |
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4.00-8 |
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4.00-8 |
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-Trac Tread |
4.00-8 |
|
4.00-8 |
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4.00-8 |
|
4.00-8 |
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|
-Turf-Chief |
18" x 6.50"-8" |
|
18" x 6.50"-8" |
|
18" x 6.50"-8" |
|
18" x 6.50"-8" |
|
|
|
|
|
|
|
|
-Turf-Saver |
18" x 8.50"-8" |
|
18" x 8.50"-8" |
|
18" x 8.50"-8" |
|
18" x 8.50"-8" |
|
|
|
|
|
|
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-Semi-Pneumatic |
N/A |
|
N/A |
|
16" x 5" x 3" |
|
16" x 5" x 3" |
|
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|
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|
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Tire Pressure |
18 psi (124 Kn/m2) |
|
18 psi (124 Kn/m2) |
|
See Tire Sidewall |
|
See Tire Sidewall |
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Battery |
12V BCI Group |
|
12V BCI Group |
|
12V BCI Group |
|
12V BCI Group |
|
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Engine |
Kohler |
|
Kohler |
|
Briggs & Stratton |
|
Robin |
|
|
|
|
|
|
|
|
-Type |
PS-471529 |
|
PS-471529 |
|
303447 |
|
EH252-0225T |
|
|
|
|
|
|
|
|
-Horsepower |
12 HP |
|
12 HP |
|
16 HP |
|
8.5 HP |
|
|
|
|
|
|
|
|
-Number of Cylinders |
One |
|
One |
|
Two |
|
One |
|
|
|
|
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|
|
|
-Displacement |
|
|
|
|
29.3 cu. in. (480 cc) |
|
15.31 cu. in. (251 cc) |
|
|
|
|
|
|
|
|
-Fuel |
See Engine Manual |
|
See Engine Manual |
|
Auto Gasoline |
|
Auto Gasoline |
|
|
|
|
|
|
|
|
-Fuel Capacity |
2.0 gals. (7.5 L) |
|
2.0 gals. (7.5 L) |
|
1.5 gals. (5.7 L) |
|
1.5 gals. (5.7 L) |
|
|
|
|
|
|
|
|
-Cooling |
Air |
|
Air |
|
Air |
|
Air |
|
|
|
|
|
|
|
|
-Air Filter |
Dual Element with |
|
Dual Element with |
|
Dual Element with |
|
Dual Element with |
|
PreCleaner |
|
PreCleaner |
|
PreCleaner |
|
PreCleaner |
|
|
|
|
|
|
|
|
-Lubrication |
Splash Type |
|
Splash Type |
|
Pump w/oil filter |
|
Splash Type |
|
|
|
|
|
|
|
|
-Oil Type |
See Engine Manual |
|
See Engine Manual |
|
See Engine Manual |
|
SAE 20#, 30# 10W-30 |
|
|
|
|
|
|
|
|
-Oil Capacity |
2.5 pts. (1.2 L) |
|
2.5 pts. (1.2 L) |
|
3.0 pts. (1.4 L) |
|
2.1 pts. (1.0 L) |
|
|
|
|
|
|
|
|
-Oil Filter |
Spin on oil filter |
|
Spin on oil filter |
|
Spin on oil filter |
|
Spin on oil filter |
|
|
|
|
|
|
|
|
-Charging System |
12 volt, 15 amp |
|
12 volt, 15 amp |
|
12 volt, 16 amp |
|
13 volt, 11.5 amp |
|
|
|
|
|
|
|
|
Transmission |
|
|
|
|
|
|
|
|
|
|
|
|
|||
-Type |
All gear transmission w/fully enclosed PTO and immersion clutch |
||||||
|
|
|
|
|
|||
-Oil Type |
|
|
SAE 30W API service class SF or higher |
|
|||
|
|
|
|
|
|
|
|
-Oil Capacity |
5 qts. (4.7 L) |
|
5 qts. (4.7 L) |
|
5 qts. (4.7 L) |
|
5 qts. (4.7 L) |
|
|
|
|
|
|
|
|
-Cooling |
Air |
|
Air |
|
Air |
|
Air |
|
|
|
|
|
|
|
|
-Number of Speeds |
4 forward/4 reverse |
|
4 forward/4 reverse |
|
4 forward/4 reverse |
|
4 forward/4 reverse |
|
|
|
|
|
|
|
|
-Direction Control |
|
|
|
|
|
|
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|
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|
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|
Speeds (with 18" tires) |
|
|
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|
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|
(with 14" tires) |
|
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|
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|
|
|
|
-Forward |
1st - 1.4 mph (2.3 kph) |
|
1st - 1.4 mph (2.3 kph) |
|
1st - 1.4 mph (2.3 kph) |
|
1st - 1.3 mph (2.1 kph) |
|
2nd - 1.8 mph (2.9 kph) |
|
2nd - 1.8 mph (2.9 kph) |
|
2nd - 1.8 mph (2.9 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
3rd - 2.7 mph (4.4 kph) |
|
3rd - 2.7 mph (4.4 kph) |
|
3rd - 2.7 mph (4.4 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
4th - 3.7 mph (6.0 kph) |
|
4th - 3.7 mph (6.0 kph) |
|
4th - 3.7 mph (6.0 kph) |
|
4th - 3.4 mph (5.5 kph) |
|
|
|
|
|
|
|
|
-Reverse |
1st - 1.3 mph (2.1 kph) |
|
1st - 1.3 mph (2.1 kph) |
|
1st - 1.3 mph (2.1 kph) |
|
1st - 1.3 mph (2.1 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
2nd - 1.7 mph (2.7 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
3rd - 2.6 mph (4.2 kph) |
|
4th - 3.3 mph (5.3 kph) |
|
4th - 3.3 mph (5.3 kph) |
|
4th - 3.3 mph (5.3 kph) |
|
4th - 3.3 mph (5.3 kph) |
|
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|
PTO |
|
|
|
|
|
|
|
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|
|
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|
-Type |
Internal Slip Clutch |
|
Internal Slip Clutch |
|
Internal Slip Clutch |
|
Internal Slip Clutch |
|
|
|
|
|
|
|
|
-Drive |
All gear shaft driven off |
|
All gear shaft driven off |
|
All gear shaft driven off |
|
All gear shaft driven off |
|
high/low planetary |
|
high/low planetary |
|
high/low planetary |
|
high/low planetary |
|
|
|
|
|
|
|
|
-Output Speeds |
|
High - 1179 RPM, low - 888 RPM at 3300 engine RPM |
|
||||
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|
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|
|||
Construction |
|
|
Cast-iron transmission case with 7-gauge framing |
|
|||
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|
3 -8
Model Number |
985117 |
|
|
|
|
|
|
|
|
Description |
13.5 HP Gear Drive |
|
|
|
Brakes |
7 x 1.75" Drum Type |
|
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|
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|
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Steering |
Manual, optional power |
|
|
|
|
steering kit available |
|
|
|
|
|
|
|
|
Turning Radius |
Zero (with steering kit) |
|
|
|
|
|
|
|
|
Minimum Uncut Circle |
Zero |
|
|
|
|
|
|
|
|
Optional Tire Sizes |
|
|
|
|
|
|
|
|
|
-Stud Tread |
4.00"-8" |
|
|
|
|
|
|
|
|
-Trac Tread |
4.00"-8" |
|
|
|
|
|
|
|
|
-Turf-Chief |
18" x 6.50"-8" |
|
|
|
|
|
|
|
|
-Turf-Saver |
18" x 8.50"-8" |
|
|
|
|
|
|
|
|
-Semi-Pneumatic |
16" x 5" x 3" |
|
|
|
|
|
|
|
|
Tire Pressure |
See Tire Sidewall |
|
|
|
|
|
|
|
|
Battery |
12V BCI Group |
|
|
|
|
|
|
|
|
Engine |
Robin |
|
|
|
|
|
|
|
|
-Type |
EH410-0226T |
|
|
|
|
|
|
|
|
-Horsepower |
13.5 HP |
|
|
|
|
|
|
|
|
-Number of Cylinders |
One |
|
|
|
|
|
|
|
|
-Displacement |
24.67 cu. in. (440 cc) |
|
|
|
|
|
|
|
|
-Fuel |
Auto gasoline |
|
|
|
|
|
|
|
|
-Fuel Capacity |
1.5 gal. (5.7 L) |
|
|
|
|
|
|
|
|
-Cooling |
Air |
|
|
|
|
|
|
|
|
-Air Filter |
Dual element |
|
|
|
|
|
|
|
|
-Lubrication |
Splash Type |
|
|
|
|
|
|
|
|
-Oil Type |
See Engine Manual |
|
|
|
|
|
|
|
|
-Oil Capacity |
5 qts. (4.7 L) |
|
|
|
|
|
|
|
|
-Oil Filter |
Spin on filter |
|
|
|
|
|
|
|
|
-Charging System |
12 volt, 12.5 amp |
|
|
|
|
|
|
|
|
Transmission |
|
|
|
|
|
|
|
|
|
-Type |
Gear transmission |
|
|
|
|
|
|
|
|
-Oil Type |
SAE 30W API service |
|
|
|
|
class SF or higher |
|
|
|
|
|
|
|
|
-Oil Capacity |
5 qts. (4.7 L) |
|
|
|
|
|
|
|
|
-Cooling |
Air |
|
|
|
|
|
|
|
|
-Number of Speeds |
4 forward/4 reverse |
|
|
|
|
|
|
|
|
-Direction Control |
|
|
|
|
|
|
|
|
|
Speeds (with 18" tires) |
|
|
|
|
|
|
|
|
|
-Forward |
1st - 1.4 mph (2.3 kph) |
|
|
|
|
2nd - 1.8 mph (2.9 kph) |
|
|
|
|
3rd - 2.7 mph (4.4 kph) |
|
|
|
|
4th - 3.7 mph (6.0 kph) |
|
|
|
|
|
|
|
|
-Reverse |
1st - 1.3 mph (2.1 kph) |
|
|
|
|
2nd - 1.7 mph (2.7 kph) |
|
|
|
|
3rd - 2.6 mph (4.2 kph) |
|
|
|
|
4th - 3.3 mph (5.3 kph) |
|
|
|
|
|
|
|
|
PTO |
|
|
|
|
|
|
|
|
|
-Type |
Internal Slip Clutch |
|
|
|
|
|
|
|
|
-Drive |
All gear shaft driven off |
|
|
|
|
high/low planetary |
|
|
|
|
|
|
|
|
-Output Speeds |
High - 1179 RPM, |
|
|
|
|
Low - 888 RPM at 3300 |
|
|
|
|
engine RPM |
|
|
|
|
|
|
|
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Construction |
Cast-iron transmission |
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case with 7-gauge |
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framing |
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3 -9
SECTION 4 - GENERAL MAINTENANCE & ADJUSTMENTS
4.1 CONTROLS AND FEATURES
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OH0160 |
1. |
Direction Control Lever |
8. |
Kick Stand |
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2. |
Steering Brake Handlebar (Optional) |
9. |
Throttle Control |
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3. |
Gear Shift Lever (Hi/Low Gear) |
10. |
Hour meter |
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4. |
Operator Presence Control |
11. |
Brake Handle Cross Bar |
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5. |
Choke Control Knob (Models with Briggs & Stratton |
12. |
Range Shift Handle (Two Speed Axle) |
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Engines) |
13. |
Parking Brake Handle (Optional on 8.5 HP) |
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6. |
PTO Control |
14. |
Instruction Plate |
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7. |
Ignition Switch |
15. |
Choke Lever (Models with Robin Engines) |
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16. |
Choke Control Knob (Models with Briggs & Stratton |
Figure 1
4.2 FILLING THE FUEL TANK
WARNING: Use caution with fuel. Fuel is very flammable. Keep fuel in a clean and tight container. Keep fuel away from fire or heat. Never put fuel in the fuel tank while the engine is running or hot. Clean up any spilled fuel before starting engine.
Add fuel to the fuel tank as needed. See your engine manual for the correct type and grade of fuel.
Put the unit in an open area. Stop the engine and lock the brake. Clean the fuel cap and the area around the fuel cap to prevent dirt from entering the fuel tank.
Remove the cap from the fuel tank. Fill the fuel tank. Be careful not to spill the fuel. Install the cap on the fuel tank and tighten. Clean up any spilled fuel before starting the engine.
4 -10
4.3 GENERAL LUBRICATION
Control Linkage Lubrication
Every 25 hours of operation put a drop of engine oil on the pivots of the throttle lever, the direction control lever, the gear shift lever, the PTO control, and range shift handle.
NOTE: There are no grease fittings on the tractor.
Transmission
Capacity: 5 U.S. Quarts (4.7 liters)
Grade: SAE 30W API service class SF or higher
Viscosity: Summer: SAE 30W or SAE 10W-30
Winter: (32oF or below) SAE 10W or
SAE 10W-30
• After every 100 hours of operation, check the level of the lubricant in the transmission. Never operate the tractor when the transmission oil level is below the "LOW’ mark on the dipstick.
• Stop the engine and raise the hood. Make sure that the tractor is level. Clean the dipstick tube and the dipstick (Figure 2). Remove the dipstick, wipe it with a clean cloth or towel and put it back in the tube. Pull the dipstick out again and look at the oil.
• If the oil level is below the low mark on the dipstick, clean the area around the filler plug and remove the filler plug. Add new clean lubricant until the dipstick indicates that the oil level is correct. See specification. Install the filler plug and dipstick.
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2 |
3 |
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1.Oil Filler Plug
2.Dipstick
3.Dipstick Tube
Figure 2 |
OH0230 |
CAUTION: Before performing any service or adjustments:
•Turn PTO switch "OFF".
•Park mower on a hard, flat, level surface.
•Place steering control levers in neutral lock (fully outward) position.
•Set parking brake.
•Turn ignition switch "OFF" and remove key.
•Wait for all moving parts to stop.
4.4FORWARD-REVERSE CLUTCH ADJUSTMENT
•After 25 hours of operation, check the adjustment of the forward-reverse clutch.
WARNING: Stop the engine before adjusting the forward-reverse clutch.
•The reverse clutch is adjusted correctly when the direction control lever stops 15 degrees past vertical to the rear. The lever should return to neutral position from reverse when adjusted correctly.
•To adjust the reverse clutch, loosen the control extension rod jam nuts on the end of the fwd-rev control rod. Adjust the rear nut so that the direction control lever stops 15 degrees past vertical to the rear. Hold the rear nut and jam with the forward nut (Figure 3).
•The forward clutch is adjusted correctly when the direction control lever is in the full forward position and the large spring has a coil clearance of .010" (.254 mm).
4 -11
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1. |
Jam Nuts |
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7. |
Adjusting |
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2. |
Fwd-Rev Control Rod |
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nuts |
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3. |
Control Extension Rod |
8. |
Fwd-Rev Lever |
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4. |
Fwd-Rev Neutral |
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Assembly |
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Spring |
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9. |
Adjustment Bracket |
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5. |
Large Spring |
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10. |
Cam Lever Arm |
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6. |
Brake Rod Assembly |
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Figure 3 |
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OH0181 |
•To adjust the forward clutch, put the direction control in the forward position. Loosen the control extension rod rear set of jam nuts on the fwd-rev control rod. Adjust the forward nut until the large spring coils are .010" (.254mm) apart. Hold the forward nut and jam with the rear nut.
4.5 HI/LOW GEAR CLUTCH ADJUSTMENT
•After every 25 hours of operation, check the adjustment of the gear clutch.
WARNING: Stop the engine before adjusting the gear clutch.
•The clutch is adjusted correctly when the gear shift lever is in the "HIGH" or "LOW" position and the spring coils are .010" (.254 mm) apart.
•To adjust the "HIGH" clutch, loosen and separate the hi-low control rod jam nuts on the rear of the control extension rod. Put the gear shift lever in the "HIGH" position. Adjust the nut (front) near the spring until the spring coils are .010" (.254 mm) apart. Move the gear shift lever to the "NEUTRAL" position. Hold the nut adjusted to the spring and jam with the other (rear) nut (Figure 4).
•To adjust the "LOW" clutch, loosen and separate the hi-lo control rod jam nuts on the end of the control extension rod. Put the gear shift lever in the "LOW" position. Adjust the nut (rear) near the spring until the spring coils are 0.10" (.254 mm) apart. Move the gear shift lever to the "NEUTRAL" position. Hold the nut adjusted to the spring and jam with the other (front) nut.
4.6 STEERING BRAKE ADJUSTMENT (APPLICABLE MODELS)
•Park the unit in a level area. Put the parking brake handle in the "OFF" (down) position. Loosen the jam nuts on the right and left brake rod assemblies (Figures 2 & 3). Turn the adjusting nuts until the brake handle cross bar is parallel with the instrument panel (Figure 1).
•Move the brake handlebar all the way to the right and measure the distance from the right end edge of the brake handle cross bar to the right side of the instrument panel. Move the brake handlebar all the way to the left and make the same measurement on the left.
•Adjust the nuts until the difference between the two measurements is 1/2" to 3/4" (13 to 19 mm). Turn both adjusting nuts the same amount, clockwise to increase the measurement difference or counterclockwise to decrease the measurement difference. Tighten the jam nuts.
•Loosen the jam nuts below the compression spring (Figure 4) on the right side of the tractor and adjust until one has the desired tension for the right brake. Tighten the jam nuts.
IMPORTANT: Replace brake shoes before lining is worn to rivet heads.
If correct braking action cannot be achieved after performing the above procedures, do the following:
1.Loosen the 5/16-24 nut and bolt which fastens cam lever arm to brake cam.
2.Remove cam lever arm from the brake cam. Rotate the cam lever arm one spine to the rear and put back on brake cam. Tighten nut and bolt.
4 -12
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5
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4
1. |
Adjusting Nuts |
4. |
Pivot Plate |
7. |
Large Spring |
2. |
Jam Nuts |
5. |
Brake Rod Assembly |
8. |
Hi-Lo Lever Assembly |
3. |
Adjustment Bracket |
6. |
Hi-Lo Control Rod |
9. |
Control Extension Rod |
Figure 4
OH0191
4.7 PTO BRAKE ADJUSTMENT
•Adjust the PTO brake after every 100 hours of operation.
WARNING: Stop the engine before adjusting the PTO brake.
•Remove the attachment and lower the rear of the tractor to the ground. Carefully clean the front of the transmission. Remove the quick hitch studs from the transmission and remove the quick hitch casting and PTO brake assembly (Figure 5).
NOTE: The attachment gasket must be replaced if damaged.
•Tighten all PTO brake bolts until the springs are solid. Back all bolts up 1/2 turn (Figure 5).
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1. |
PTO Brake Bolts |
3. PTO Shaft |
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Springs |
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Figure 5 |
OH0210 |
NOTE: Do not tighten the bolts in a circular sequence, by tightening the bolt next to one which was just tightened. The bolts should be tightened in a cross sequence, by tightening one bolt, then tightening the bolt which is across from it on the plate. Continue tightening the bolts in this sequence until all the bolts are tightened.
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1.Quick Hitch Adapter
2.Quick Hitch Stud
Figure 6 |
OH0200 |
•Make sure the trunnion block is on the shipper shaft and held in place by the dog. The dog should rest on the spiral teeth of the clutch dog plate. Install the gasket.
•Align the splines on the quick hitch shaft with those in the dog. Slide the quick hitch casting and PTO brake assembly back into the place on the front of the transmission. Install the quick hitch studs and tighten.
4 -13
4.8 SLIP CLUTCH ADJUSTMENT
•Adjust the slip clutch after every 100 hours of operation.
WARNING: Stop the engine before adjusting the slip clutch.
•Remove the attachment and lower the rear of the tractor to the ground. Carefully clean the front of the transmission. Remove the quick hitch studs from the transmission and remove the quick hitch PTO assembly and PTO brake assembly (Figures 5 & 6).
NOTE: The attachment gasket must be replaced if damaged.
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20 |
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17 |
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18 |
16 |
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15 |
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4 |
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14 |
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13 |
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12 |
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11 |
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10 |
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9 |
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8 |
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1. |
Back Plate |
11.Drive Plate |
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2. |
Brake Disc |
12.Friction Washer |
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3. |
Dog Plate Brake |
13.Back Plate |
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4. |
Trunnion Block |
14.Pinion Shaft |
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5. |
Seal |
15.Shipper Shaft |
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6. |
Quick Hitch Shaft |
16.Shipper Shaft Gasket |
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7. |
Quick Hitch Casting |
17.Shipper Shaft Body |
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8. |
Dog |
18.Shipper Shaft |
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9. |
Friction Washer |
19.Set Screw |
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10.Dog Plate |
20.Roll Pin |
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Figure 7 |
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•Remove the dog and trunnion block. Disconnect the wiring harness from the PTO brake interlock switch and remove the shifter parts. Slide the shipper shaft assembly through the top of the advance casting. Slide the clutch assembly and pinion shaft out of the transmission. Remove the retaining ring and slide the clutch assembly off of the pinion shaft. Turn all of the jam nuts counterclockwise to loosen.
•Torque bolts in stages using the pattern shown in Figure 8:
1.Tighten bolts down until the spring starts to compress.
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Tighten bolts to 80-85 in-lbs (9-9.6 Nm). |
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Tighten nuts to 165-170 in-lbs (18.6-19.2 Nm). |
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Finish tightening the nuts to 100-150 ft-lbs |
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(136-203 Nm). |
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Figure 8 |
OH0220 |
NOTE: Do not tighten the bolts in a circular sequence, that is, by tightening the bolt next to one which was just tightened. The bolts should be tightened in a cross sequence, that is, by tightening one bolt, then tightening the bolt which is across from it on the plate. Continue tightening the bolts in this sequence until all the bolts are tightened. (Figure 8)
•Slide the clutch assembly back onto the pinion shaft, install the retaining ring and slide the pinion shaft completely into the transmission. Install the shipper shaft and other parts that were removed previously. Make sure the trunnion block is on the shipper shaft and held in place by the dog. The dog should rest on the spiral teeth of the clutch dog plate. Install the gasket. Align the splines on the quick hitch shaft with those in the dog. Slide the quick hitch casting and PTO brake assembly back into place on the front of the transmission. Install the quick hitch studs and tighten.
4 -14