Clutch Inspection

Inspect the clutch pistons and the clutch piston check valves (A).

Fig 1: Identifying Clutch Piston Check Valves
Courtesy of AMERICAN HONDA MOTOR CO., INC.
If the clutch piston check valve is loose or damaged, replace the clutch piston.
Check the spring retainer for wear and damage.
If the spring retainer is worn or damaged, replace it.
Inspect the clutch discs, the clutch plates, and the clutch end-plate for wear, damage, and discoloration.
Clutch Discs:

Standard Thickness: 1.94 mm (0.076 in.)

Clutch Flat-plates and Clutch Wave-plates

Standard Thickness:

1st Clutch: 1.6 mm (0.063 in.)

1st-hold Clutch: 1.8 mm (0.071 in.)

2nd Clutch: 1.8 mm (0.071 in.)

3rd Clutch: 2.0 mm (0.079 in.)

4th Clutch: 1.6 mm (0.063 in.)

5th Clutch: 1.6 mm (0.063 in.)
If the clutch discs are worn or damaged, replace them as a set. If the clutch discs are replaced, inspect the clearance between the clutch end-plate and the top disc.
If any plate is worn, damaged, or discolored, replace the damaged plate with a new plate, and inspect the other wave-plates for a phase difference. If the clutch plate is replaced, inspect the clearance between the clutch end-plate and the top disc.
If the clutch end-plate is worn, damaged, or discolored, inspect the clearance between the clutch end-plate and the top disc, then replace the clutch end-plate.