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5. Turn over engine with kick or electric
(make sure battery is fully charged) with
throttle wide open until pressure indicated on
the gauge does not increase further.
Standard:
I 0 k g / c m ! (142 psi)
Minimum:
9kg/cm! (128 psi)
Maximum: 11kg /cm! (156 psi)
.
is
I f pressure
too low, squirt a few drops of oil
into the cylinder being measured. Measure
compression again. I f there is a higher reading
than before (without oil), the piston rings
may be worn or damaged. If the pressure re-
mains th e same after measuring with the
either or both the rings and valves may be
the cause.
Check each cylinder. Compression pressure
should not vary more than 1kg/cm! (14 psi)
from one cylinder t o any other cylinder.
2 - 4 CHASSIS
A. Fuel Petcock Cleaning
1. Turn the petcock lever t o the "ON" or
"RES" position.
starter
Remove the fuel pipe.
Remove the drain cover and clean it with
2.
solvent.
oil,
B. Fuel Petcock
I f the fuel petcock is leaking or excessively contami-
nated,
should be removed from the fuel tank and
it
inspected.
1. Remove fuel tank and position it so that fuel
will not spill when the petcock is removed.
2. Remove petcock and inspect filter screen.
Replace filter
3. Remove 4 screws on front and rear of petcock
and remove plate, gaskets, lever and diaphragm.
4. Inspect all components and replace any that
are damaged. I f the diaphragm is in any way
damaged, or the petcock body gasket surfaces
scratched or corroded, the petcock assembly
must be replaced. I f there i s abrasive damage
to any component, the fuel tank must be
drained and flushed.
5. Reassemble petcock and install on
C. Front And Rear Brake
See pages 158-159 for adjustments
1. Brake adjustment
The brakes can be adjusted by simply adjusting
the free play of the brake lever and pedal.
piston in the caliper moves forward as the
brake pad wears out, automatically adjusting
the clearance between the brake pad and the
brake disc.)
a. Front brake lever free play
CAUTION: Proper lever free play is essential
t o avoid excessive brake drag.
Disassembly
if seriously contaminated.
fuel tank.
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