5.
Reinstall the blind plug.
N.
Compression
Pressure
Measurement
Insufficient compression pressure will result
in performance loss and may indicate leaking
valves
or worn or damaged piston rings.
1.
Make sure the valve clearance is correct.
2. Warm up the engine for 2
- 3 minutes;
stop the engine.
3. Remove the spark
plug.
4. Install a compression gauge.
5.
Turn over the engine
with
the kick
starter with the
throttle wide open until
the pressure indicated on the gauge
does
not
increase further. The compres-
sion
should
be
within the specified
levels.
Compression pressure (at
seal
level) :
Standard .....
1,079
kPa
(11
kg/
cm
2,
156
psi)
Minimum .....
883
kPa
( 9 kg/cm2,
1~8
psi)
Maximum .....
1,177kPa(12kg/cm2,
171
psi)
WARNING:
When
cranking
the
engine,
ground
the
spark
plug
wires
to
prevent
sparking.
2-8
,
1.
Compression gauge set (special tool P / N. YU-33358)
2.
Compression gauge adapter (special tool P / N. YU-33358-3)
6.
If the pressure
is
too low, squirt a
few
drops
of
oil into the cylinder. Measure
compression again.
If there
is
a higher
reading than before (without
oil),
the
piston rings may
be
worn or damaged.
If
the pressure remains the same after
measuring with the
oil, one or both rings
and
valves may
be
the source
of
the pro-
blem.
CHASSIS
A.
Down
Tube
Strainer
1.
Remove the
front
bracket.
2.
Remove the strainer.
To Next Page
Loading...
