Honda NSA700A DN-1 2009, Service Manual

Page: 271 / 654

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N ever use a w ire C lean carb o n d epo sits fro m th e ring g ro o v e s w ith a
brush; it w ill scratch
used piston ring th a t w ill be d iscard ed .
the groove.
CYLINDER/PISTON_____________________________
INSPECTION
PISTON/PISTON RING
A lw a y s replace the In sp ect th e piston rings for s m o o th m o v e m e n t by
p is to n rings as a ro tatin g th e m . T h e ring s should be a b le to m o v e in
set.
th e ir g ro o v e s w ith o u t catching.
Push th e ring u ntil th e o uter s u rface o f th e piston
ring is n e a rly flush w ith th e piston a n d m e a s u re th e
rin g -to -rin g g ro o v e clearance.
SERVICE LIMITS:
Top / Second: 0.07 mm (0.003 in)
In sert th e piston ring in to th e b o tto m o f th e c y lin d e r
s q u a re ly using th e piston crow n.
M e a s u re th e ring e n d gap.
SERVICE LIMITS:
Top: 0.50 mm (0.020 in)
Second: 0.65 mm (0.026 in)
Oil (side rail): 0.90 mm (0.035 in)
M e a s u re th e piston O .D . at a p o in t 15 m m (0 .6 in)
fro m th e b o tto m a n d 90°
to
th e piston pin hole.
SERVICE LIMIT: 80.90 mm (3.185 in)
C o m p a re th is m e a s u re m e n t a g a in s t th e m a x im u m
c y lin d e r I.D. m e a s u re m e n t and c alcu late th e cylin -
d e r-to -p is to n cle a ra n c e (page 10-8).
SERVICE LIMIT: 0.10 mm (0.004 in)
P IS T O N R ING
15 mm
(0 in
10-6