SOHC.co.uk Forums > CB750

f2 jumps out of 5th

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steff750:
 ;) i had this problem years ago ,after quickly rebuilding a k4 engine (to use in my k0 that had camshaft failure)i left out a bearing set ring its a half circlip that locates the gearbox bearings in the engine cases, it could be the same part bryanj mentioned ? it work ok for a while then started jumping out of fifth then no fifth at all ,only four gears lol, (i rode it like this all summer until i fixed my original engine) it only came too light after i dismantled the k4, as spitfire says the job can be done upside down no poblem, you might have too wiggle the cases a bit to split them

Yoshi823:
When about to invert the engine don't forget to have drained the oil before removing the engine.

The half-circip stops any sideways movement of the gear cluster shaft.It is easily mislaid and forgotten about and has been known to break.

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