1984 Official Honda TRX200 Shop Manual, Page 29Get this manual
C1 HONDA TRX200
MAIN TE NANCE
CYLINDER COMPRESSION
Warm up the engineAfter the engine is warm, stop the engine and remove the spark plugInsert compression gaugePull out the choke knob all the way and fully open the throttlePush the starter button until the compression gauge reading stops rising The maximum reading is usually reached within 4- seconds
Watch for compression leaking at the gauge connection
COMPRESSION: 11 .0 1.0 kgcm (156 14 psi)