1999-2002 TRX400EX Fourtrax Service Manual, Page 102Get this manual
CYLINDER HEADVALVE Grease the cotters to ease
Install the valve spring cotters using the valve spring compressorTOOL Valve spring compressor CAUTION: To prevent loss of tension, do not compress the valve springs more than necessary to install the cotters
installation
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Support the cylinder head so that the valve heads wi II not contact anything that cause damageTap the valve stems gently with two plastic hammers as shown to seatthe cotters fi rmly,