Adjustments. Exmark TTS16KA483CA, TTS16KA363CA, TTS20KAE483, TTS18KA523, TTS16KA363, TTS20KAE523, TTS16KA483, TTS20KAE483CA

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Adjustments. Exmark TTS16KA483CA, TTS16KA363CA, TTS20KAE483, TTS18KA523, TTS16KA363, TTS20KAE523, TTS16KA483, TTS20KAE483CA | Manualzz

Maintenance

Adjustments

Note: Disengage PTO, shut off engine, wait for all moving parts to stop, engage parking brake, and remove key before servicing, cleaning, or making any adjustments to the unit.

Deck Leveling

See Adjusting the Cutting Height section in

Operation.

Pump Drive Belt Tension

Self-tensioning - No adjustment necessary.

PTO Clutching Belt Tension

See Inspect PTO Clutching Belt Tension section.

Deck Belt Tension

Self-tensioning - No adjustment necessary.

Park Brake Adjustment

1. Shut off engine and wait for all moving parts to stop.

2. Disengage the park brake.

3. Remove the hairpin in the park brake linkage.

Turn the linkage in the yoke until there is 3/16 inch (4.8 mm) to 1/4 inch (6.4 mm) clearance between the park brake tire bars and the tires with the park brake disengaged. Re-install the hairpin.

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 18).

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 18) until the

tabs are positioned correctly.

Figure 18

Viewed from Left Side of Unit

1.

Neutral Safety Switch

2.

Actuating Tab in neutral position

3.

5/16 inch (7.9 mm)

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 (7.9 mm)

between the tab and the switch (see Figure 18).

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

“mid-speed” position.

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.

34

Maintenance

disengaged whenever speed control levers are moved out of the neutral position.

Note: The neutral lock latches should be

“unlocked” and in the forward position.

2. Loosen the front nut on left hydro control

linkage as shown in Figure 19. Turn the rear

control linkage adjusting nut counterclockwise until wheel rotates forward. Turn the rear nut of left control linkage clockwise 1/4 of a turn at a time, stopping to move the speed control forward and back to neutral, until left wheel stops rotating forward.

Turn the rear nut an additional 1/2 turn and tighten the front nut making sure not to put a bind on the linkage. Make sure flat part of linkage is perpendicular to pin part of swivel

(see Figure 20).

Figure 19

Viewed from Left Side of Unit

1.

Neutral Control Linkage 5.

Speed Control Linkage

2.

Hydro Control Linkage

3.

Drive Lever Linkage

6.

Adjust here-rotate at approximately 1/4 turn increments and re-check.

7.

Loosen nut

4.

Speed Control Crank 8.

Yoke

4. Loosen the nut against the neutral control

linkage yoke as shown in Figure 19.

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 to see if the wheel stops. If not, repeat the above adjustment procedure.

6. Make this adjustment on both sides.

7. After adjustments are made and the wheels stop when the drive levers are in the neutral position, tighten the nuts against the yokes.

Adjust Hydro Control Linkages:

1. Place the speed control lever in the “neutral” position. This adjustment is again made with rear of machine on jack stands and engine running at full throttle. OPC levers will have to be held down and the park brake must be

3.

Rear nut

Figure 20

1.

Left Hydro Control Link

(left side shown)

2.

Front nut

4.

Linkage is perpendicular to pin (correct position)

5.

Linkage in incorrect position

6.

End view of swivel

After adjusting the left hydro control linkage, move the speed control lever to the mid-speed position and then back to the neutral position.

Recheck the left drive wheel rotation to see if further adjustment is necessary - be sure the speed control lever is in the neutral position.

Important: If inconsistent neutral occurs, check to be sure both springs are properly tightened on the speed control lever under the console–especially the rear pivot spring.

Repeat above adjustments if necessary.

3. Place the speed control lever in neutral. Adjust the right side linkage by turning the quick track knob counterclockwise until the tire begins to rotate forward. Begin to retighten the knob clockwise about 1/4 turn at a time, stopping to move the speed control forward and back

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