Ski-Doo FORMULA III, Shop Manual

Page: 136 / 356

Section 04 ENGINE
Sub-Section 06 (OIL INJECTION SYSTEM)
04-06-6
CHECKING OPERATION
On Vehicle
NOTE : Main oil line must be full of oil. See
bleeding procedure above.
Lift rear of vehicle and support with a mechanical
stand. Unbolt banjo fittings from pump. Start en-
gine and stop it as soon as it fires.
Check that oil level in small oil lines is passed ban-
jo fittings end by about 25 mm (1 in) (this will be
indicated by a clear section of small oil lines of
about 25 mm (1 in)). Repeat the procedure until
this condition is attained.
Reconnect banjo fittings with a washers on each
side, start engine and run at idle while holding the
pump lever in fully open position. Oil columns
must advance into small oil lines.
TYPICAL - ENGINE AT IDLE
1. Oil columns advancing
2. Washer on each side
3. Fully open position
If not, remove pump assembly and check the
pump gear and drive shaft (if applicable) for de-
fects, replace as necessary. Test pump as de-
scribes below.
NOTE : Through normal use, oil level must
not drop in small tubes. If oil drops, verify
check valve operation in banjo fittings. For 599 en-
gine check valve is integrated in injection nozzle.
For 779 check valve is in oil line. Replace as nec-
essary.
Oil Pump Test Bench
Connect a hose filled with injection oil to main line
fitting. Insert other hose end in an injection oil
container. Using a counterclockwise rotating drill
rotate pump shaft. Oil must drip from outer holes
while holding lever in a fully open position. If not
replace pump.
TYPICAL
1. Fully open position
2. Counterclockwise rotating drill
3. Main line
'
A15C17A
1
2 3
'
A15C18A
2
1
3