Description
Yamaha Blaster Crankshaft Primary Nut
This Yamaha Blaster crankshaft primary nut secures the primary drive gear to the crankshaft on the clutch side of the engine. The primary drive transfers power from the crankshaft to the clutch assembly.
Replace a nut with damaged threads or rounded wrench flats before reassembling the engine. Sound retaining hardware is essential when completing crankshaft repairs, servicing the primary drive or rebuilding the engine.
Product Details
- Application: Yamaha Blaster YFS200 crankshaft primary drive.
- Purpose: Retains the crankshaft primary gear.
- Condition: New.
- Replacement type: Superseded part.
- Design: Hex nut with a flanged base, as pictured.
Installation
Inspect the crankshaft threads and mating components before assembly. Start the nut by hand to check thread engagement, and use the appropriate holding tool and tightening procedure.
Follow the Yamaha service manual for the correct torque specification and retaining hardware arrangement. Inspect any associated locking hardware and replace it where required.
Yamaha Blaster Engine Parts and Service
Browse The Blaster Store for additional engine parts and hardware. Ken OConnor Racing also provides crankshaft rebuilding and engine assembly services.
For help identifying the hardware your engine needs, contact Ken OConnor Racing.
Call (860) 230-5003 with questions about fitment.










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