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Inspecting/adjusting/
Synchronizing Oil-injection Pump
1. With the engine off, disconnect the throttle cable
from the throttle lever.
2. Pull the throttle cable to the FULL-OPEN posi-
tion; then using a suitable clamping device, secure
the cable in this position.
CAUTION
Care must be taken when securing the cable not to
kink or damage the cable.
3. Check to be sure the mark on the control arm is
aligned with alignment mark on the oil pump boss.
4. If the marks are not aligned, adjust synchroniza-
tion by loosening the jam nut(s) on the adjuster.
Rotate the jam nuts/adjuster nut until proper align-
ment is attained. Tighten jam nut(s).
5. Return the throttle cable to the CLOSED position.
NOTE: Connect the throttle cable to the throttle
lever; then adjust the cable/linkage adjusting nut
so the throttle lever moves approximately 1/8 in.
before the oil-injection pump control arm begins to
move. This ensures the throttle/ignition monitor
switch will function properly and will prevent igni-
tion "cut-out" and spark plug fouling at low RPM
operation.
CAUTION
Whenever servicing the oil-injection system, use a
100:1 gas/oil mixture in the gas tank to ensure ade-
quate engine lubrication. Failure to use the 100:1 mix-
ture to the oil-injection system will result in severe
engine damage.
CAUTION
Assure that the throttle cable has returned to the fully
closed (idle) position and has not remained in a partial
open position and moves freely from the open posi-
tion to the closed position.
Testing Oil-Injection Pump
NOTE: These tests must be made with the snow-
mobile and the oil at a "room" temperature of 20°-
30° C (68°-86° F).
! WARNING
Always wear safety glasses when performing this test.
1. Disconnect the oil pump cable/control rod from
the control arm on the pump.
2. Clamp off the oil-supply hose between the oil res-
ervoir and oil pump; then remove the supply hose
from the pump.
64
3. Attach a suitable length of clear oil-supply hose to
the oil pump; then using Oil Injection Usage Tool,
fill the hose with Arctic Cat Synthetic APV 2-
Cycle Oil.
NOTE: Use clear hose when performing this test
to simplify the detection of air in the testing equip-
ment.
NOTE: Use Arctic Cat Synthetic APV 2-Cycle Oil.
Use of any other oil will cause inaccurate oil con-
sumption readings.
NOTE: When filling the oil-supply hose with oil, do
not fully insert the usage tool into hose. There must
be enough room around the tip of the tool and the
hose to allow air in the hose to escape.
4. Fill the usage tool with recommended oil to the 0
line.
5. Wipe the tip of the tool to remove excess oil; then
attach the tool to the oil-supply hose and remove
the bulb.
6. Secure the tool to the oil reservoir by twisting the
rubber strap one half turn and placing the rubber
strap around the tool and the oil reservoir filler neck.
! WARNING
Keep hands and clothing away from all moving or
rotating parts.
7. With the control arm secured in the FULL-
CLOSED (Idle) position, start the engine and run
the engine at recommended RPM for 3 minutes.
Compare the amount of oil used against the speci-
fications on the chart in Section 1.
NOTE: Before starting the engine, make sure that
no air is present in the testing equipment.
8. With the control arm secured in the FULL-OPEN
position (line-to-line), run the engine at recom-
mended RPM for 2 minutes. Compare the amount
of oil used against the Oil Consumption Specifica-
tions chart.
9. If the oil-injection pump output does not meet the
specifications, see Testing Oil-Injection Check
Valves.
10. Disconnect the oil usage tool, remove the plug
from the reservoir, attach the oil-supply hose to the
oil reservoir.
CAUTION
Whenever servicing the oil-injection system, use a 100:1
gas/oil mixture in the gas tank to ensure adequate
engine lubrication. Failure to use the 100:1 mixture to the
oil-injection system will result in severe engine damage.
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