1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 80Get this manual
CYLINDER HEADV ALVES Install the valve spring retainers and the valve cotters
TOOL: Valve spring compressor CAUTION
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To prevent loss of tension, do not compress the valve spring more (han necessary
Tap the valve stems gently with plastic hammer to firm seat the cotters
CAUTION
Support the cylinder head abo ve the work bench surface to prevent possible valve damageInstall new O-ring in the carburetor insulator groove and install the intake pipe with two bolts