Section04ENGINE
Subsection 04 (OIL INJECTION SYSTEM)
1
A33D15A
A
TYPICAL
1. Lock nut
A. Visible stretched distance
If the visible distance is less or more than specified
above, adjust the cable distance accordingly. To
do so, loosen lock nut, turn adjusting screw in or
out, retighten lock nut.
To Bleed Oil Lines
Bleedmainoilline(betweenreservoirandpump)
by loosening the bleeder screw no. 8 until air has
escaped from the line. Add injection oil as re-
quired.
Reinstall all parts.
Bleed the small oil line between pump and engine
by running engine at idle while holding the pump
lever in fully open position.
NOTE: Make a J hook out of mechanical wire to
lift the lever.
WARNING
No ensure not operate carburetor throttle
mechanism. Secure the rear of the vehicle
on a stand.
CHECKING OPERATION
Oil Pump
On Vehicle
NOTE: Main oil line must be full of oil. See bleed-
ing procedure above.
Lift rear of vehicle and support with a mechanical
stand. Unplug small oil lines from pump. Start
engineandstopitassoonasitfires.
Check that oil in small oil lines has been sucked up
(this will be indicated by a clear section of small oil
lines). Repeat the procedure until this condition is
attained.
Reconnect small oil lines, start engine and run at
idle while holding the pump lever in fully open po-
sition. Oil columns must advance into small oil
lines.
If not, remove pump assembly and check the
pump gear and drive shaft (if applicable) for
defects, replace as necessary. Test pump as
describes below.
NOTE: Through normal use, oil level must not
drop in small tubes. If oil drops, verify check valve
operation in injection nozzle. Replace as neces-
sary.
Test Bench
Connect a hose filled with injection oil to main line
fitting. Insert other hose end in an injection oil
container. Using a clockwise rotating drill rotate
pump shaft. Oil must drip from outer fittings while
holding lever in a fully open position. If not replace
pump.
Check Valve
For all engines, check valve no. 2 is part (built-in)
of injection nozzle.
To verify the check valve, proceed the same as for
checking pump operation on vehicle. First unplug
oil line from check valve. After restarting the en-
gine, check that a clear section in small oil line is
present. Reconnect oil line.
Run engine at idle. Oil column must advance. If
the check valve is faulty, oil column will go back
and forth. Replace if so.
Oil Reservoir Check Valve
It allows air to get into the reservoir. To verify this
one-way check valve, remove it along with the
hose. Make sure that it holds pressure and that
it does not let air go through.
While installing this check valve make sure that
the black side is towards the reservoir.
132 mmr2004-Rev
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