Maintenance
Hydro Drive Linkage
Adjustment
•Adjust Speed Control Linkage and Neutral Safety Switch:
1.Stop engine and wait for all moving parts to stop. Engage parking brake. Remove key or spark plug wire(s).
2.Move the speed control lever (located on the console) to the full forward position and check the orientation of the tabs on the ends of the speed control crank (see Figure 19). These tabs should be pointing straight down at the 6 o’clock position or slightly forward. Adjust the threaded yoke at the bottom of the speed control linkage (see Figure 19) until the tabs are positioned correctly.
Note: The OPC levers must be held down and the park brake must be disengaged whenever the speed control lever is moved out of neutral or the engine will kill.
3.Squeeze the respective drive lever until an increased resistance is felt, this is where neutral should be.
If the wheel turns while holding the drive lever in neutral, the neutral control linkages need to be adjusted. If the wheel stops then go to step 7.
Figure 19
Viewed from Left Side of Unit
1. Neutral Safety Switch | 3. 5/16 inch (.76 cm) |
2.Actuating Tab
3.Pull the speed control lever back to neutral. Check that the neutral safety switch actuating tab has depressed the plunger of the switch so that there is about 5/16 inch (.79 cm) between the tab and the switch (see Figure 19). If necessary, move the switch fore and aft.
•Adjust Neutral Control Linkages:
1.Raise the rear of the machine up onto jack stands high enough to raise the drive wheels off of the ground.
2.Start the engine and move the throttle ahead to the full throttle position. Place the neutral lock latches in the “forward” position as shown in Figure 4. Release the park brake and move the speed control lever to the
Figure 20
Viewed from Left Side of Unit
1. | Neutral Control Linkage | 5. | Speed Control Linkage |
2. | Hydro Control Linkage | 6. | Adjust |
|
|
| approximately 1/4 |
|
|
| turn increments and |
|
|
| |
3. | Drive Lever Linkage | 7. | Loosen nut |
4. | Speed Control Crank | 8. | Yoke |
4.Loosen the nut against the neutral control linkage yoke as shown in Figure 20.
5.Adjust the neutral control linkage until the respective drive wheel stops when the lever is pulled against the neutral spring (neutral position). Turn the adjusting bolt approximately 1/4 turn clockwise if the wheel is turning in reverse or turn the bolt approximately 1/4 turn counterclockwise if the wheel is turning forward. Release the drive lever to the forward drive position and squeeze back into the neutral position. Check
33
