2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 139Get this manual
CYLINDER HEADIVALVECAMSHAFT Lubricate the valve stem sliding surface with molybdenum oil solutionInsert the valve into the guide while turning it slowly to avoid damaging to the stem seal
RETAINER
Install the inner and outer valve springs with the tightly wound coils facing the combustion chamberInstall the spring retainer
Combustion chamber side
Toprevenr loss of
compress the valve springs more than necessary