Polaris 2000 120 XCR Service Manual page 93

ELECTRICAL
THROTTLE
SPEED CONTROL ASSURANCE SWITCH
ADJUSTMENT
Throttle lever free play must always provide a specified
clearance between throttle lever and throttle block. This
clearance is controlled by the throttle cable sleeve(s) and the idle
speed screw(s). If the idle speed screw(s) is adjusted inward and
the cable sleeve(s) is not adjusted to take up the throttle lever to
throttle block clearance, the engine may misfire or kill upon
initial throttle opening.
CAUTION
A
FTER ANY IDLE SPEED ADJUSTMENTS ARE MADE
THROTTLE LEVER TO THROTTLE BLOCK CLEARANCE AND OIL
PUMP ADJUSTMENT MUST BE CHECKED AND ADJUSTED
NOTE: When adjustments are made on models
which have more than one carburetor, refer to
Carburetion chapter,
synchronization adjustments.
SPEED CONTROL ASSURANCE
REPLACEMENT
Auxiliary shut-off and speed control assurance switches are
connected and replaced as a unit from the back side of the
throttle block.
1. Remove the handlebar pad and/or throttle block backing
plate.
2. Slide out the auxiliary shut-off portion of the switch.
3. Remove the two screws securing the two speed control
assurance switches.
4. Remove the switches noting their placement in the throttle
block.
5. Replace the assembly and check its operation.
7.4
,
THE
.
for proper carburetor
ELECTRICAL TESTING
REV LIMITER / REGULATOR TESTING
With the engine running at idle, open hood and locate governor
arm (See Engine chapter). Push governor arm toward
carburetor. If the engine misses and sputters, the rev limiter is
working correctly. If the engine does not miss, stop the engine
and check for continuity between the blue to black wires at the
throttle. With the throttle depressed, blue to black should be an
open circuit. With the throttle untouched, blue to black should
show continuity.
SPEED CONTROL ASSURANCE TESTING
With engine idling, hold the throttle pivot and open the throttle
slightly. The engine should stop running. If it does not stop
running, check for continuity between the black and brown
wires from the throttle assembly. The two speed control
switches must make a complete circuit to kill the engine. To
check the switches, pull the throttle lever out away from the
throttle block. With the switch plungers outward and the
auxiliary shut-off switch in the RUN position, connect the
multitester to the black and brown wires. The multitester must
read less than .4 ohms resistance. Inspect wires and repair if
damaged, or replace switch assembly.
OPEN CIRCUIT (RUN)
With the auxiliary shut-off switch in the RUN position, connect
the multitester to the black and brown wires. The multitester
should read an open circuit (OL). As the throttle lever is moved
from idle to off idle, the tester should continue to read an open
circuit. If the tester fluctuates and the throttle lever to throttle
block clearance is adjusted properly, the switch assembly must
be replaced.
AUXILIARY SHUT-OFF
With the multitester connected between the black and brown
wires, the multitester should read less than.4 ohms in the OFF
position and an open circuit in the RUN position. Inspect wires
and repair if damaged, or replace switch assembly.