6-26 POWER UNIT
11. Remove piston pin circlips 1.
12. Remove piston pin 2 from conrod 3.
13. Remove two compression rings (top and 2 nd) and oil ring 5
from piston 4.
NOTE:
Install the 1 st ring to piston with its original direction.
There is no I.D. mark on standard size 1 st ring.
INSPECTION/SERVICING
NOTE:
If excessive wear, cracks, defective or other damage is found on
any component, replace component.
CYLINDER/PISTON
Cylinder distortion
Using a straightedge and thickness gauge, measure cylinder
distortion (gasketed surface) at a total of six (6) locations as
shown.
09900-20803: Thickness gauge
Service limit: 0.05 mm (0.002 in)
If measurement exceeds service limit, resurface or replace cylin-
der.
NOTE:
The cylinder can be resurfaced, using a surface plate and #400
grit wet sandpaper. Move the cylinder in a figure eight pattern
when sanding.
Water jacket
Check water jackets.
If clog or obstruction is found, clean the water jacket.
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