Ariens ProZoom 99480600-1952S Owner's/Operator's Manual page 25

Adjusting Motion Control Return to Neutral (RTN)
Linkages:
,_ 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.
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.
MX20161
Checking and Adjusting Transmission
Tracking
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.
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 on page 24.
2. Start engine and run until it reaches normal operating
temperature.
3. Move machine to an open, level area for operation.
Picture Note: Side flame 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.
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.
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