1986-1988 Honda TRX 200SX Fourtrax Service Manual, Page 57Get this manual
CYLINDER HEADIV ALVES Remove the circllp and decompressor cam from the decompresso shaft
Remove the decompressor lever shah and retur sprin from [he cylinder head cover
INSPECTION
Inspect the rocker arms for wear or damage or clogged oil holeIn spect th arm 's con ta ct surface on the ca mshaft for damage easure the I.D of eac rocker armSERVICE LIMIT; 12.05 mm (0.474 inl