1999-2002 TRX400EX Fourtrax Service Manual, Page 93Get this manual
CYLINDER HEADVALVE Removethe following:th rustwasherone-way clutch (clutch outer, rollers and springs)reverse decompressorcam -stopper pindecompressor cam -spring INSPECTION Check the one-way clutch outer, rollers and springs for wear or damageCheck both cams for wear or damageCheck the cam's sliding surface on the camshaft for scoring or wearWASHER CAM SPROCKET FLANGE4 DECOMPRESSOR CAMREVE RSE DECOMPRESSOF
v-; -' ONE WAY CLUTCH
DECOMPRESSORASSEMBLY
Lubricatethe cams, one-way clutch and washer, Install the spring into the camshaft hole, then install the decompressor cam while holding the springAssemble the reverse decompressor cam and clutch outer with the stopper pin and install the assembly onto the camshaftSPRING