Ski-Doo Ski Doo MX Z 2005 [1012/1429] Bleeding oil lines
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Ski-Doo Ski Doo MX Z 2005 [1012/1429] Bleeding oil lines

Ski-Doo Ski Doo MX Z 2005 [1012/1429] Bleeding oil lines
Section 03 ENGINES (2-STROKE)
Subsection 06 (OIL INJECTION SYSTEM)
1
A32D1OB
C
TYPICAL
1. Lock nut
C. Oil pump adjustment (sum of “A” plus the specification “B”)
If the visible distance is less or more than “A” +
“B”, adjust cable distance. To do so, loosen lock
nut, turn adjusting screw in or out and retighten
lock nut.
EXAMPLE: — The 593 HO SDI has a throttle
lever measurement “A” of 1.5 mm (0.059 in); by
adding the appropriate specification “B” found in
the chart (18 mm (0.709 in), you would determine
that the correct measurement “C” at the cable
would be 19.5 mm (0.768 in) as per equation
A+B=C.
BLEEDING OIL LINES
Bleed main oil line (between tank and pump) by
loosening the bleeder screw no. 8 until air has es-
caped from the line. Add injection oil as required.
Reinstall all parts.
Bleed the small oil lines between pump and en-
gine 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
Ensure not to 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 mechani-
cal stand. Disconnect small oil lines from pump.
Start engine and stop it as soon as it fires.
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 oil lines. If oil drops, verify check
valve operation in injection nozzle. Replace as
necessary.
Test Bench
Connect a hose filled with injection oil to supply
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.
2, Check Valve
For engine 593, check valve is part (built-in) of in-
jection nozzle.
For engines 277, 443 and 552, check valve is part
(built-in) of banjo fitting.
To verify this check valve, proceed the same as for
checking pump operation on vehicle. First unplug
oil line from injection nozzle. After restarting the
engine, 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.
140 mmr2005-015

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