Arctic Cat M 8000, Service Manual

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7. With the idle position set to specification, slowly
compress the throttle lever to the full-open position.
The full-open specification should be observed. Gen-
tly snap the throttle lever open and closed several
times and note if the reading remains within the
specification.

NOTE: If, after adjusting the Throttle Position Sen-
sor to the IDLE specification, the FULL-OPEN is less
than the specified voltage, recheck the
FULL-CLOSED setting. If the FULL-CLOSED set-
ting is correct, replace the sensor.
REPLACING TPS (4000/8000)

NOTE: Replacing the TPS is for out of warranty
snowmobiles only.
Removing
1. Remove the expansion chamber and resonator.
2. Rotate the idle screw counterclockwise until it no
longer contacts the throttle shaft stop. The throttle
shaft should now be completely closed.
3. Disconnect TPS wiring harness from the TPS; then
noting the position of the TPS, remove the two
screws securing the TPS to the throttle body and
remove the sensor.
Installing
1. Apply a light film of silicone grease to the O-ring.
Install the O-ring into the groove.
2. Install the new TPS onto the throttle shaft by align-
ing the “flats” on the throttle shaft cam with the
“flats” on the sensor; then rotate the sensor until
properly positioned on the throttle body.
3. Install the sensor to the throttle body. Do not tighten
at this time.
4. Adjust the TPS (see appropriate Adjusting TPS in
this sub-section).

NOTE: Before installing the TPS harness connector,
apply dielectric grease to the connector pins.
5. Disconnect the adjustment tool harness from the
TPS. Connect the snowmobile TPS harness to the
newly installed or adjusted TPS.
6. Install the resonator and expansion chamber.
REPLACING TPS (6000)

NOTE: Replacing the TPS is for out of warranty
snowmobiles only.
Removing
1. Rotate the idle screw counterclockwise until it no
longer contacts the throttle shaft stop. The throttle
shaft should now be completely closed.
2. Disconnect TPS wiring harness from the TPS; then
noting the position of the TPS, remove the two
screws securing the TPS to the throttle body and
remove the sensor.
Installing
1. Install the new TPS onto the throttle shaft by align-
ing the “flats” on the throttle shaft cam with the
“flats” on the sensor; then rotate the sensor until
properly positioned on the throttle body.

NOTE: Before installing the TPS harness connector,
apply dielectric grease to the connector pins.
2. Install the sensor to the throttle body. Do not tighten
at this time.
3. Adjust the TPS using the CATT II Tool.
Electrical Resistance Tests
 NOTE: Replace any component that does not have a
test value within specifications. If the component tests
satisfactorily but is suspected to be faulty, connect the
red meter lead to a component lead and the black
meter lead to ground. Check for continuity between
the component and ground. If continuity is observed,
replace the component.
 NOTE: The following test should be made using
MaxiClips and the Fluke Model 77 Multimeter set to
OHMS scale.
Charge Coil (1)
1. Disconnect the triple-wire plug from the main har-
ness to the magneto.
2. Connect the red meter lead to the black/red wire in
the plug; then connect the black meter lead to the
green/red wire in the plug.
3. Resistance must be 8.8-13.2 ohms.
Charge Coil (2)
1. Disconnect the triple-wire plug from the main har-
ness to the magneto.
2. Connect the red meter lead to the brown/white wire
in the plug; then connect the black meter lead to the
green/red wire in the plug.
3. Resistance must be 8.8-13.2 ohms.
Fuel Pump Coil

NOTE: With the engine running, there should
14.5-17.5 DC volts supplied to the fuel pump for oper-
ation.
Engine TPS TOOL (DC VOLTS)
ANALYZER TOOL
(DC VOLTS)
4000 Full-Closed 0.412-0.414
Idle 0.710-0.818 0.710-0.818
Full-Open 3.472-4.048 3.470-4.046
DIAGNOSTIC TOOL
8000 Full-Closed 0.412-0.414
Idle 0.646-0.754 3.99° -6.66°
Full-Open 3.472-4.485 74.97°-89.37°
CAUTION
Always disconnect the battery when performing resis-
tance tests to avoid damaging the multimeter.