SERVICE INFORMATION
GENERAL
CYLINDER/PISTON
• This section covers maintenance
of
the cylinder and piston. These procedures can be
done
with
the engine installed in
the
frame.
• Before disassembly, clean the engine
thoroughly
to
prevent
dirt
from
entering
it.
•
Be
careful
not
to
damage the
mating
suriaces when
removing
the
cylinder. F
or
example.
do
not
use a screwdriver
to
pry
the
cylinder.
• Clean all disassembled parts
with
cleaning
solvent
before
inspection
, use
compressed
air
to
dry
the
parts.
• Under racing conditions, the piston and piston rings
should
be replaced after 15.0
hours
of
operation.
Replace the pis-
ton
pin after
30
.0
hours
of
operation
.
SPECIFICATIONS
ring
Top
0.065 - 0.100 (0.0026 - 0.0039)
0.115 (0.0045)
gap
0.90 (0.035)
TORQUE VALUE
Cam chain
tensioner
lifter
mounting
bolt
12 N·m
(1.2
kgf·m,
9lbHt)
10-3
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