Checking and Adjusting Transmission Tracking

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 out the exhaust fumes.

Check and adjust transmission tracking with the machine parked on a firm, level surface.

Checking Transmission Tracking

1. Inflate tires to correct pressure.

2. Start engine and run until it reaches normal operating temperature.

3. Move machine to an open, level area for operation.

4. Move throttle lever to the fast position.

5. 
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   Drive machine forward, pushing both control levers (A) all the way to the speed control bar (B).

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6. If machine does not drive in a straight line, an adjustment is required.

Adjusting Transmission Tracking

Tracking is adjusted by shortening or lengthening the control rods.

• Shortening the control rod increases the forward speed capability for the side of the mower.
• Lengthening the control rod slows down that side of the mower.

If the mower is tracking to the left, either the left side needs to go faster (by shortening the left control rod) or the right side needs to go slower (by lengthening the right control rod).

If the mower is tracking to the right, either the right side needs to go faster (by shortening the right control rod) or the left side needs to go slower (by lengthening the left control rod).

The tracking adjustment varies depending on which speed/sensitivity position the control rods are installed in. Use the procedure that matches your application.

Tracking Adjustment

1. Park machine safely. (See Parking Safely in the Safety section.)

2. Raise thigh pad.

3. 
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   Loosen the upper (A) and lower (B) control rod lock nuts.

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4. The control rods must not be adjusted so that direct pressure is applied to the internal pump stop. This results in damage to the hydraulic pumps.

   Rotate the control rod (C) clockwise (shorten) or counterclockwise (lengthen) as needed.

   • Shortening the control rod (C) increases the speed of the forward movement of the mower on that side.
   • Lengthening the control rod (C) slows the speed of the forward movement of the mower on that side.
   
   

   The only reference point to limit the adjustment from becoming far off is the relative position of the pump stop and the handlebars. If the adjustment is off either due to new parts having been installed or for other reasons:

   • Adjust the tracking one or two turns on either side as needed.
   
   

5. Tighten lock nuts.

6. Check tracking. (See Checking Transmission Tracking.) Repeat adjustment procedure as needed.

7. Check neutral position adjustment. (See Checking Neutral Position.) Adjust as needed.