Checking and Adjusting Motion Control Linkages

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.

Check and adjust motion control linkages with the machine parked on a firm, level surface.

The machine can fall or slip from an unsafe lifting device or supports.

• Use a safe lifting device rated for the load to be lifted.
• Lower machine onto jack stands or other stable supports and block wheels before servicing.

Checking Neutral Position

Neutral refers to mower movement when the engine is at full throttle, parking brake is off, and the control levers are in the neutral position. The mower should not move forward or backward during this time. If the mower is moving forward or backward, the neutral setting must be adjusted.

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1. Raise rear of machine with safe lifting device:

   • Use wheel chocks to block the front wheels.
   • Support with wood blocks or jack stands.
   • Rear drive wheels must be able to rotate freely.
   
   

2. Start engine.

3. Move throttle lever to the fast position.

4. Unlock park brake.

5. If the rear drive wheels begin to creep, an adjustment is required.

Adjusting Neutral Position

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1. Remove retaining knob (A), and remove belt access panel (B).

2. Raise thigh pad.

3. 
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   Raise rear of machine with safe lifting device:
   • Use wheel chocks to block the front wheels.
   • Support with jack stands.
   • Rear drive wheels must be able to rotate freely.
   
   

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4. Start engine.

5. Move throttle lever to the fast position.

6. Unlock park brake.

7. If the right wheel turns in the neutral position, then the right pump requires adjustment.

   Do not over-tighten the return-to-neutral device screw.

   
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   Loosen the 1/4-inch screw (A) and rotate the return-to-neutral device on the pump corresponding to the wheel requiring adjustment. Rotate the return-to-neutral device until the neutral position is located. Tighten the screw.

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8. Repeat step 7, as needed, for the other pump.