4
4-15
SNO-738
Removing
1. Loosen the clamp securing the fuel supply hose to
the fuel rail; then remove the hose from the fuel rail.
2. Disconnect the wiring harness from each injector.
3. Remove the screws securing the injector hold-down
plate to the throttle body assembly; then remove the
plate from the injectors.
4. Remove the fuel injectors from the throttle body/
intake manifold assembly.
Installing
1. Apply a light coat of oil to all O-rings; then install
the upper and lower O-rings onto each injector.
2. Install the injectors into the throttle body assembly.
3. Place the injector hold-down plate into position on
top of the injectors and secure with two screws.
4. Connect the fuel delivery hose to the fuel rail and
secure with a clamp.
NOTE: When securing the fuel delivery hose, posi-
tion the clamp as shown.
729-325A
5. Connect the wiring harness to the injectors.
FUEL PRESSURE REGULATOR
The fuel pressure regulator maintains the fuel pressure at
a constant specified level. The turbo models maintain
pressure from the manifold pressure.
EXHAUST AIR TEMPERATURE (EAT)
SENSOR
This platinum, thin-film sensor detects the exhaust air
temperature in the exhaust system. The ECU sends cur-
rent to this sensor, and (depending on the temperature)
the sensor will pass a portion of that current to ground.
The ECU measures how much current passes through the
sensor to ground. From this measurement, the ECU
determines the exhaust air temperature and adjusts the
fuel, ignition timing, and APV calibration. Resistance
will increase as the temperature rises.
FUEL PUMP CIRCUIT (2-Stroke)
The fuel pump and its circuit are provided with current
from the fuel pump coil on the stator. For this circuit to
function correctly, five components must be properly
functioning. Check the following components before
considering the fuel pump assembly to be defective.
A. Fuel pump coil - see coil test procedure.
B. Emergency stop switch and ignition switch must
be ON.
C. Fuel pump - see fuel pump test procedure.
D. Wiring harness and connectors - clean the connec-
tors and test the harness.
E. ECU.
CRANKSHAFT POSITION SENSOR
(1100 cc)
This sensor measures the location in degrees of rotation of
the crankshaft. A 15° resolution exists between signals. The
signal is triggered by teeth on the outer surface of the fly-
wheel as they pass by the sensor. The sensor gives the ECU
the location of the crankshaft at a given point in time. The
ECU processes the information and uses it in many differ-
ent types of calculations. For example, the sensor can be
used for RPM, and it can also be used to determine the rate
of acceleration of the crankshaft.
CAMSHAFT POSITION SENSOR
(1100 cc)
This sensor tells the ECU which stroke the engine is on.
Because the 4-stroke engine operates on a 720° cycle, the
piston is at TDC twice per cycle - once on the exhaust
stroke and once on the compression stroke.
MANIFOLD ABSOLUTE PRESSURE
(MAP) SENSOR (1100 cc)
This sensor measures pressure in the intake manifold when
the engine is running. The ECU uses this sensor to aid in
calculating the required fueling. For the base fuel map, the
1100 cc non-turbo relies on the MAP sensor only for low
throttle openings. After a given throttle opening is reached,
the ECU switches to the TPS sensor for its main fuel map.
The 1100 cc turbo relies entirely on the MAP sensor and
only uses the TPS for its main fuel map if the MAP sensor
should fail.
WARNING
Since the fuel supply hose may be under pressure, remove
it slowly to release the pressure. Place an absorbent
towel around the connection to absorb gasoline; then
remove the hose slowly to release the pressure. Always
wear safety glasses when removing the fuel hoses.
800 cc
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 ...