Honda XL350R 1984 Shop Manual page 91

CYLINDER COMPRESSION
INSPECTION
Warm up the engine.
Stop the engine and remove the spark plug.
Disconnect the kick starter decompressor cable
from the valve lifter lever at the cylinder head.
Connect a compression gauge.
Open the throttle grip fully .
Operate the kick starter pedal several times and
check the gauge reading.
NOTE
Be sure compression is not leaking at the
gauge connection.
COMPRESSION : 1,400 kPa (14.0 kg/eml, 199 psi)
Low compression can be caused by:
Improper valve adjustment
Valve leakage
Leaking cylinder head gasket
Worn piston rings or cylinder
High compression can be caused by:
Carbon deposits in the combustion chamber or
on the piston head
Disconnect t he compression gauge, the n reinstall the
kickstaner decompressor cable.
Adjust t he kickstarter decompressor lifter lever free
play.
Reinstall the spark plug.
CYLINDER HEADIVALVES
COMPRESS ION GAUGE
6-23