Replacement cam pin for the UMS 7-35cc, the seven-cylinder 35cc four-stroke radial from UMS.
Function: it is the cam pin guide assembly, which locates the cam follower in the crankcase.
The reason this ends up on an order: a worn guide lets the follower move out of line, which shows up as uneven valve timing and noise. Supplied as a pack of 4, which is how these small parts are normally bought — you rarely need just one.
Fitting note: Check the follower for scoring when renewing the guide.
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