There is oil on the clutch driven plate facings, or the facings are burned or glazed.

1. Replace the clutch driven plate.
2. Correct the oil leak.

•	For the clutch driven plate replacement procedure, refer to Clutch Pressure Plate and Clutch Driven Plate .

•	For oil leak diagnosis information, refer to Oil Leak Diagnosis in Engine Mechanical.

An improper bolt tightening sequence was used when installing the clutch pressure plate to engine flywheel bolts.

Loosen all the bolts evenly, then tighten the bolts evenly using the proper sequence, to specifications.

Refer to Clutch Pressure Plate and Clutch Driven Plate .

The release bearing is binding on the actuator cylinder quill.

1. Inspect the release bearing and the quill of the actuator cylinder for scoring or a lack of lubrication.
2. Replace or lubricate components as necessary.

•	For the release bearing replacement procedure, refer to Release Bearing Replacement .

•	For the actuator cylinder replacement procedure, refer to Clutch Actuator Cylinder Replacement .

The clutch driven plate hub is binding on the propeller input shaft splines.

1. Inspect the input shaft splines for wear or damage.
2. Inspect the clutch driven plate hub for wear or damage.
3. Replace components as necessary.

•	For the input shaft replacement procedure, refer to Driveline Support Assembly Replacement in Propeller Shaft.

•	For the clutch driven plate replacement procedure, refer to Clutch Pressure Plate and Clutch Driven Plate .

There is burned or smeared resin on the engine flywheel or the clutch pressure plate.

1. Sand off the burned or smeared resin if it is only superficial.
2. Inspect the engine flywheel and the clutch pressure plate surfaces for burn or heat check damage.
3. Replace the engine flywheel and or the clutch pressure plate if such damage is noted.

•	For the engine flywheel replacement procedure, refer to Engine Flywheel Replacement in Engine Mechanical.

•	For the clutch pressure plate replacement procedure, refer to Clutch Pressure Plate and Clutch Driven Plate .

The clutch pressure plate and/or the engine flywheel are warped

1. Measure the runout of the clutch pressure plate and the engine flywheel.
2. The runout of the clutch pressure plate or the engine flywheel should not exceed:

Specification
1.25 mm (0.050 in)

3. Replace the clutch pressure plate and or the engine flywheel, if necessary.

•	For the clutch pressure plate replacement procedure, refer to Clutch Pressure Plate and Clutch Driven Plate .

•	For the engine flywheel replacement procedure, refer to Engine Flywheel Replacement in Engine Mechanical.

The clutch pilot bearing is faulty.

1. Inspect the clutch pilot bearing.
2. Replace the clutch pilot bearing, if necessary.

Refer to Clutch Pilot Bearing Replacement .