5-4
0728-916
7. Slowly depress the throttle lever to increase engine
RPM.
NOTE: Engine RPM must be allowed to increase
slowly.
8. Observe the tachometer and the drive clutch to deter-
mine the moment the carburetor safety switches shut
down the ignition. Since retaining the throttle lever pin
prevents the switch in the throttle control housing from
closing, the carburetor safety switches should shut down
the ignition at or slightly after clutch engagement.
9. Repeat steps 6-8 several times. If ignition shutdown
always occurs at or slightly after clutch engagement,
the carburetor safety switches are synchronized.
10. To complete the procedure, repeat step 1.
NOTE: After completion of any adjustments, throttle
lever “side pressure” should not cause an ignition
miss at idle. Carburetor safety switches set too low or
an excessively tight throttle cable makes the shut-
down system very sensitive to throttle lever “side
pressure” near idle.
Throttle Position Sensor
NOTE: Two-stroke engines equipped with a throttle
position sensor have a protective feature called “fail-
safe” ignition timing preventing engine damage
should the TPS fail. If the TPS does fail, the engine
may run normally at low RPM but will run poorly at
high RPM allowing the operator to get the snowmo-
bile to safety with no engine damage. The engine will
continue to operate this way until the TPS is adjusted
or replaced.
NOTE: On the non-turbo Bearcat/T-Series, remove
the air silencer. Proceed to Air Silencer (1100 cc Non-
Turbo) sub-section in Section 3 and follow steps 1-12
of REMOVING. On the T-Series turbo models, remove
the console and left-rear spar panel.
VERIFYING TPS ADJUSTMENT TOOL
Before using the TPS adjustment tool, verify its battery
condition. The battery used in the tool is a 9-volt battery.
To check battery condition, use a digital volt/ohmmeter
set on DC volt scale. Test between the adjustment tool
black and red jacks. Insert the red lead of the digital volt-
meter into the red jack of the adjustment tool and the
black lead of the digital voltmeter into the black jack of
the adjustment tool. The green power light of the ana-
lyzer should now be illuminated. If voltage is found
below 4.9 volts, replace the battery.
NOTE: The Test Harness must be plugged into the
analyzer for testing voltage. Always verify battery
voltage is at least 4.9 DC volts before testing TPS.
CHECKING TPS
NOTE: If the snowmobile is in warranty, breaking
the seal on the idle screw jam nut or the Phillips-head
screws on the TPS will void warranty. If the TPS is
tested out of specification, the throttle body must be
replaced. If the snowmobile is out of warranty, pro-
ceed to Adjusting TPS.
1. Using Throttle Position Sensor (TPS) Adjustment
Tool Kit, connect its wiring harness to the TPS.
2. On the 1100 cc models, connect the red tester lead to
the white adjustment tool jack; then connect the
black tester lead to the black adjustment tool jack.
3. On the 500/800 cc models, connect the red and black
digital voltmeter leads to the white and black jacks of
the TPS adjustment tool.
4. Ensure that the throttle cable/control rod (500/800
cc) has the proper amount of free-play.
5. With the throttle in the idle position, compare the
reading on the voltmeter to the chart. If the reading is
within prescribed specification, proceed to step 6.
6. Compress the throttle lever slowly to the full-open
position. The meter reading should show a smooth
rise in voltage all the way to the full-open position. If
the voltage seems to be erratic or doesn’t meet the
prescribed specification, repeat this procedure sev-
eral times to confirm results.
NOTE: If at any point throughout the throttle range
the meter reads no voltage (open), hold the throttle
lever in that position. If the voltage does not return,
the throttle body must be replaced.
7. If the full-open throttle voltage remains erratic or out
of specification, proceed to the appropriate Adjust-
ing TPS.
Engine
Idle
Full-Open
500 cc
0.710-0.818
3.472-4.048
800 cc
0.646-0.754
3.472-4.485
1100 cc Non-Turbo
1.10-1.14
4.30-4.50
1100 cc Turbo
0.69-1.11
4.00-4.20
Содержание Sno Pro 120
Страница 20: ...1 18 NOTES ...
Страница 29: ...2 9 2 570ENG12 ...
Страница 39: ...2 19 2 500CC2A_12 ...
Страница 45: ...2 25 2 NOTES ...
Страница 47: ...2 27 2 800_12_2 ...
Страница 61: ...2 41 2 Engine Torque Patterns 1100 cc 1100TorquePattern12 ...
Страница 63: ...2 43 2 1100ccZ1RV10 ...
Страница 81: ...2 61 2 1100ccZ1RV10 ...
Страница 82: ...2 62 Engine Torque Patterns 1100 cc 1100TorquePattern12 ...
Страница 141: ...2 121 2 SNO2152 ...
Страница 142: ...2 122 SNO2153 ...
Страница 180: ...3 18 0742 314 0746 520 F5 LXR 800 cc ...
Страница 204: ...3 42 NOTES ...
Страница 260: ...5 26 Troubleshooting Servomotor SERVO1A12 ...
Страница 261: ...5 5 27 SERVO2rv ...
Страница 264: ...Magneto 0746 255 1 ...
Страница 265: ...Main Harness p n 1686 600 F570 p n 1686 601 Bearcat 570 T570 p n 1686 612 Bearcat 570 XT 0746 237 2 ...
Страница 266: ...Main Harness p n 1686 603 F5 LXR 0746 249 3 ...
Страница 269: ...Main Harness p n 1686 588 F 800 M 800 XF 800 0746 242 6 ...
Страница 270: ...Main Harness p n 1686 611 TZ1 Turbo LXR LTD 0746 253 7 ...
Страница 271: ...Main Harness p n 1686 610 TZ1 TZ1 LXR 0746 252 8 ...
Страница 272: ...Main Harness p n 1686 613 Bearcat Z1 XT GS p n 1686 615 Bearcat Z1 XT LTD 0746 511 9 ...
Страница 273: ...Main Harness p n 1686 578 Sno Pro 120 10 0744 204 ...
Страница 274: ...Ignition Main Harness p n 1686 628 Sno Pro 500 11 0745 605 ...
Страница 275: ...Ignition Main Harness p n 1686 657 Sno Pro 600 12 0746 250 ...
Страница 276: ...0745 601 13 Console Harness p n 1686 631 TZ1 LXR TZ1 Turbo LXR LTD ...
Страница 277: ...Hood Harness p n 1686 638 F 800 M 800 XF 800 0746 243 14 ...
Страница 278: ...Console Harness p n 1686 633 Bearcat 570 F570 T570 0746 238 15 ...
Страница 279: ...Console Harness p n 1686 634 F5 LXR 0746 240 16 ...
Страница 280: ...Hood Harness p n 1686 639 F 1100 Turbo M 1100 Turbo HCR XF 1100 Turbo 0746 246 17 ...
Страница 281: ...Hood Harness p n 1686 658 Sno Pro 600 Cross Country p n 1686 664 Sno Pro 600 Sno Cross 18 0746 251 ...
Страница 282: ...0746 254 19 Console Harness p n 1686 547 Bearcat Z1 XT GS p n 1686 549 Bearcat Z1 XT LTD TZ1 ...
Страница 283: ...Hood Harness p n 1686 587 Sno Pro 500 20 0744 201 ...
Страница 284: ...Handlebar Harness p n 1686 652 TZ1 LXR Turbo LXR LTD p n 1686 653 Bearcat Z1 XT GS LTD 0746 513 21 ...
Страница 285: ...Passenger Seat Harness p n 1686 570 22 0744 197 ...
Страница 286: ...Handlebar Harness p n 1686 636 F 800 M 800 XF 800 p n 1686 654 M 800 HCR 0746 244 23 ...
Страница 287: ...Handlebar Harness p n 1686 537 Bearcat 570 F570 T570 0746 239 24 ...
Страница 288: ...Handlebar Harness p n 1686 574 F5 LXR 0744 189 25 ...
Страница 289: ...Handlebar Harness p n 1686 637 F 1100 Turbo M 1100 Turbo XF 1100 Turbo 0746 247 26 ...
Страница 290: ...Handlebar Harness p n 1686 590 Sno Pro 500 27 0744 200 ...
Страница 291: ...Handlebar Harness p n 1686 656 M 1100 Turbo Sno Pro HCR 28 0746 510 ...
Страница 292: ...Misc Groomer Special p n 1686 645 p n 1686 646 p n 1686 647 p n 1686 648 29 0746 241 ...
Страница 460: ...8 26 0744 930 ...