Adjusting Clutch

If the clutch slips after adjusting clutch control, increase spring tension on the three clutch spring guide stud nuts (6, Figure 4-2). Remove clutch cover and tighten all three nuts one-half turn at a time until clutch holds. Test after each half turn by cranking the engine. Usually a clutch that holds without noticeable slipping when cranking the engine will hold under normal road conditions. Do not increase spring tension any more than is necessary to make clutch hold.

A new clutch is assembled so the distance from inner edge of spring collar (2, Figure 4-3) to the surface of the outer disc (8) is exactly 1-1/32 in. If springs are compressed so this distance is 7/8 in. or less, the clutch probably cannot be fully disengaged. Check the dimension at several points to make sure that releasing disc is parallel with plates.

When clutch will not hold without tightening beyond this limit, disassemble the clutch for inspection of the clutch discs. Discs may be worn or oil soaked and in need of replacement or washing.


Remove primary chain housing cover.

Remove push rod adjusting screw locknut (1). Place a flat washer about 1 /8 in. thick with 1 -3/4 in. outside diameter and 3/8 in. hole over the adjusting screw (2). Replace lock-nut and turn down until three spring tension adjusting nuts (3) are free. The nuts may then be removed and the spring collar, springs, outer disc assembly (4, 5 and 6) may be slipped off clutch hub dowels and studs as shown in Figure 4-3. Do not disassemble these parts unless necessary for spring, spring collar or outer disc replacement.

Figure 4-2. Adjusting Clutch

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