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Service Transmission - 24
SERVICE TRANSMISSION
Adjusting Motion Control Return to Neutral (RTN) Linkages:
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1. Stop engine.
2. Lock park brake.
3. Lift machine with a safe lifting device centered under rear tire support
frame.
4. Start the machine with motion control levers in neutral.
5. Stand on the operator’s platform and release park brake.
6. If rear wheels rotate when motion control levers are in neutral, a neutral
adjustment is required.
7. Stop engine.
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MX20161
Picture Note: Side frame removed for picture clarity.
8. Slightly loosen cap screw (A) to allow rotation of neutral return plate.
• If wheel is rotating forward, rotate neutral return plate counterclockwise
until wheel rotation stops.
• If wheel is rotating in reverse, rotate neutral return plate clockwise until
wheel rotation stops.
9. Tighten cap screw (A).
10. Recheck neutral. If wheels continue to rotate, readjust.
11. With the engine running, operate the motion control levers to verify
adjustment.
• If engine will not crank over after adjustments are made, adjust the
neutral switch.
Checking and Adjusting Transmission Tracking
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NOTE: Check and adjust transmission tracking on a hard, level
surface.
Checking Transmission Tracking:
1. Check and adjust motion control linkages. See Checking and Adjusting
Motion Control Linkages in the SERVICE TRANSMISSION section.
2. Start engine and run until it reaches normal operating temperature.
3. Move machine to an open, level area for operation.
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MX20109
4. Drive machine forward, pushing both control levers (A) all the way to
speed control bar (B).
5. If machine does not drive in a straight line, an adjustment is required.
Adjusting Transmission Tracking:
1. Adjust appropriate control rod swivel (C) located on each side of
machine.
• If machine tracks to the right, remove spring pin (D) and rotate left
control rod swivel one turn clockwise. Install spring pin (D).
• If machine tracks to the left, remove spring pin (D) and rotate right
control rod swivel one turn clockwise. Install spring pin (D).
2. Check transmission tracking again and adjust as required until machine
drives in a straight line.
Adjusting Forward and Reverse Speeds
Adjusting Forward Speed:
Park machine safely. (See Parking Safely in the SAFETY section.)
CAUTION: Avoid injury! Fingers or loose clothing can get
caught in rotating parts. Stop engine and wait for all moving
parts to stop before servicing.
CAUTION: Avoid injury! Engine exhaust fumes contain
carbon monoxide and can cause serious illness or death.
Move the machine to an outside area before running the
engine.
Do not run an engine in an enclosed area without adequate
ventilation.
• Connect a pipe extension to the engine exhaust pipe to
direct the exhaust fumes out of the area.
• Allow fresh outside air into the work area to clear the
exhaust fumes out.