Checking and Adjusting Transmission Tracking

CAUTION: 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 with the machine parked on a hard, 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 will increase the forward speed capability for the side of the mower.
• Lengthening the control rod will slow 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 will vary depending on which speed/sensitivity position the control rods are installed in. Use the procedure that matches your application.

Tracking Adjustment (Speed Sensitivity in Slow Position)

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 jam nuts.

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4. NOTE: The control rods should not be adjusted so that direct pressure is applied to the internal pump stop. This will result in damage to the hydraulic pumps.

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

   • Shortening the control rod (C) will increase the speed of the forward movement of the mower on that side.
   • Lengthening the control rod (C) will slow the speed of the forward movement of the mower on that side.
   
   

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

   • Position the control rods in the fast speed sensitivity setting. (See Changing the Speed Sensitivity Adjustment.)
   • Adjust the tracking using the Tracking Adjustment (Speed Sensitivity in Fast Position) procedure.
   • Reposition the control rods to the slow position (See Changing the Speed Sensitivity Adjustment.)
   • Adjust the tracking one or two turns on either side as needed.
   
   

5. Tighten jam 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.

Tracking Adjustment (Speed Sensitivity in Fast Position)

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

2. Raise thigh pad.

3. 
   TCAL48038-UN-17SEP13

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

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4. NOTE: The control rods should not be adjusted so that direct pressure is applied to the internal pump stop. This will result in damage to the hydraulic pumps.

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

   • Shortening the control rod (C) will increase the speed of the forward movement of the mower on that side.
   • Lengthening the control rod (C) will slow the speed of the forward movement of the mower on that side.
   
   

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

   • Position the control rods in the fast speed sensitivity setting. (See Changing the Speed Sensitivity Adjustment.)
   • Adjust the tracking using the Tracking Adjustment (Speed Sensitivity in Fast Position) procedure.
   • Reposition the control rods to the slow position (See Changing the Speed Sensitivity Adjustment.)
   • Adjust the tracking one or two turns on either side as needed.
   
   

5. Tighten jam 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.