2006 Honda TRX680 Rincon Factory Service Manual, Page 222Get this manual
CYLINDER HEADVALVECAMSHAFT Grease the cotters Install the valve cotters using the valve spring cornto ease installation, pressorTo prevent loss of tension, do not TOOL: compress the valve Valve spring compressor springs more than necessary
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Support the cylin- Tap the valve stems gently with two plastic hamder head so the mers to seat the cotters firmlyvalve heads will not contact anything that cause damage