5-6
POWR
E
INSPECTION
G62002-0
PISTON
Cleaning
1. Using a gasket-scraper, remove the car-
bon from the piston top.
2. Using a broken ring, clean the ring
grooves.
3. Using a soft brush and solvent, thor-
oughly clean the piston. If necessary,
use 600 ~ 800 grit wet-or-dry sandpaper
to remove score marks or varnish.
Inspection
1. Using a micrometer, measure the pis-
ton diameter at right angles to the pis-
ton-pin center-line, 10 mm (0.4 in)
above the bottom edge.
2. Using the measured cylinder bore
diameter in thrust directions, subtract
the piston diameter measurement from
the cylinder bore diameter measure-
ment.
If this clearance is greater than the max-
imum, replace all pistons to standard or
oversize, and/or rebore all cylinders.
*: Except for USA
Piston diameter:
Standard:
59.455 ~ 59.480 mm
(2.3407 ~ 2.3417 in)
Piston clearance:
0.040 ~ 0.045 mm
(0.0016 ~ 0.0018 in)
Oversize piston:
1st* 59.75 mm (2.352 in)
2nd 60.00 mm (2.362 in)
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