Gravely 988100 - GR1336FX 사용자 설명서

GB - 21

The transmission shift lever is attached to the 
transmission shift arm with two 5/16-18 bolts 
(Figure 11). 

To adjust:

1. Stop the engine. Remove ignition key. Put PTO 

lever in the "OFF" position. Put the shift lever in 
neutral.

2. Loosen two 5/16-18 bolts in shift lever.

3. Center shift lever vertically in forward slot, just 

touching the reverse stop (Figure 12).

4. Tighten bolts securely.

NOTE: You should not be able to shift into reverse with-
out pushing down on the shift lever.

1. Stop the engine. Remove ignition key. Put PTO 

lever in the "OFF" position. Put the shift lever in 
neutral.

2. Remove mower drive belt from mower clutch 

sheave. Refer to Belt Replacement for your deck.

3. Remove transmission belt idler spring 

4. Loosen one and remove one front engine bolt. 

Save the hardware.

5. Turn the clutch bracket away from the clutch.

6. Remove old transmission belt from mower clutch 

sheave and transmission sheave.

7. Install new transmission belt in the top groove of 

the clutch hub and on the transmission sheave.

8. Install transmission belt idler spring to tension 

belt.

9. Reposition clutch bracket, replace engine bolt, 

and torque both engine bolts to 17 lbf-ft (23 N•m).

10. Reinstall mower drive belt on mower clutch 

sheave.

If clutch fails to engage or disengage properly or 
begins to make abnormal noise, check the air gap 
adjustment at the three inspection slots.

To check:

1. Stop engine, remove key and wait for all hot parts 

to cool.

2. Measure the air gap between the armature and 

the rotor.

Minimum: A .005" feeler gauge should slide 
between armature and rotor with slight contact.

Maximum: A .023" feeler gauge should slide 
between armature and rotor with slight contact.

OG1230

1. Transmission
2. Shift Lever

3. 5/16-18 Bolts

1

3

2

Figure 11

OG1240

Reverse Stop

Center in Slot

Shift Lever

Figure 12

WARNING: AVOID INJURY. An extension 
spring, when extended, stores energy and 
can be dangerous. Always use tools 
specifically designed for installing or 
removing an extension spring. Always 
compress or extend springs slowly.

1

2

3

4

5

OG0792

Figure 13

1. Mower Drive Belt
2. Mower Clutch 

Sheave

3. Transmission Belt 

Idler Spring

4. Engine Bolt
5. Clutch Bracket
6. Transmission Belt
7. Transmission 

Sheave

6

7