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Shop/Category/Fig. 8 — CLUTCH – SHOCK ABSORBER/Key – clutch hub to mainshaft
Key – clutch hub to mainshaft
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DiagramFig. 8 — CLUTCH – SHOCK ABSORBER · ref 19
Subsystemprimary
Listed in parts books1973

Key – clutch hub to mainshaft

A key that locates the clutch hub on the mainshaft so the two turn together.

PN · 21-0066

This is the small key that locates the clutch hub on the mainshaft, keeping the two turning together instead of slipping against each other. It shows up in the clutch and shock absorber section of the parts book, which tells you it's part of that hub-to-shaft connection rather than anything on the primary chain or engine side.

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It's a simple, low-cost piece but an important one — a worn or sheared key here is a common reason a clutch hub starts to feel loose or the drive gets sloppy under power. Our catalog record only ties this one to a single year listing, so if you're working on something outside that range, give us a call and we'll confirm it's the right key before you order.

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