3-38 ENGINE
CAM CHAIN TENSION ADJUSTER
CAM CHAIN TENSION ADJUSTER
Insert the
- screwdriver into the slotted end of cam chain ten-
sion adjuster and turn it clockwise to lessen the tension and
release the
- screwdriver. Then check the push rod movement.
If the push rod is stuck or spring mechanism failed, replace the
cam chain tension adjuster with a new one.
CAM CHAIN TENSIONER/GUIDE
Check the contacting surface of the cam chain guide for wear
and damage. If it is found to be damaged, replace it with a new
one.
CYLINDER
CYLINDER DISTORTION
Check the gasketed surface of the cylinder for distortion with a
straightedge and thickness gauge, taking a clearance reading at
several places as indicated. If the largest reading at any position
of the straightedge exceeds the limit, replace the cylinder.
% Cylinder distortion
Service Limit: 0.05 mm (0.002 in)
( 09900-20803: Thickness gauge
CYLINDER BORE
Inspect the cylinder wall for any scratches, nicks or other dam-
age. Measure the cylinder bore diameter at six places.
% Cylinder bore
Service Limit: 87.500 – 87.515 (3.4449 – 3.4455 in)
( 09900-20508: Cylinder gauge set
09900-20511: Cylinder gauge rod (88 mm)
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