1995-2000 Honda FourTrax 300 300FW TRX300 TRX300FW TRX service manual., Page 41Get this manual
MAINTENANCE
CYLINDER COMPRESSION
"tie MgitlfI musl boIllIMing 10 do 00fflfI WOII'make
$I)'" lllal Ih6 rB;! is New1r run th6 enginIt .i'l an encJoslld ama1116 IlXhalJ61 oontaills poisonous carOOtl motIOIIide gas thai rr8y cause loss 01 oonsd0u9""55 and ItMd 10 _It!,
Warm up the englllflthe engIoe and remol9 the &park plug
Instan compression!l"ll!I9
Open the Ihrottle aH the aIter motor until the
and Cfan! the omgjoe Wllh Itte readIng 51Dp5 "5no
COMPRESSlotol PR ESSUR E:
1.250-1 ,450 kP, {12.5-14.5
low oornpession can be
178-206 psi)
- DIown cylinder head gaskal
- improper
- valve leakage