13.13
ELECTRICAL
throttle lever to throttle block clearance, the engine may
misfire or kill upon initial throttle opening.
NOTE: When adjustments are made on models
which have more than one carburetor, refer to
Carburetion chapter, for proper carburetor
synchronization adjustments.
AUXILIARY SHUT-OFF SWITCH TESTING
1. Set the multitester in the ohms (Ω) position.
2. Disconnect the switch harness from the main wire harness.
3. Connect the two multitester leads to the two switch wires.
TEST 1 - OPEN CIRCUIT (RUN)
With the auxiliary shut-off switch in the ON position, 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.
TEST 2 - CLOSED CIRCUIT (OFF)
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 ON position,
the multitester must read less than.4 ohms resistance. Inspect
wires and repair if damaged, or replace switch assembly.
TEST 3 - AUXILIARY SHUT-OFF
The multitester should read less than.4 ohms in the OFF
position and an open circuit in the ON position. Inspect wires
and repair if damaged, or replace switch assembly.
FUEL SENDER TESTING
Use the multitester ohmmeter to test the resistance of the fuel
sender.
CAUTION
AFTER ANY IDLE SPEED ADJUSTMENTS ARE MADE, THE
THROTTLE LEVER TO THROTTLE BLOCK CLEARANCE AND
OIL PUMP ADJUSTMENT MUST BE CHECKED AND ADJUSTED.
Table 13-6: Fuel Sender Testing Range
POSITION OHMS Ω
OHMS
RANGE
EMPTY 95Ω 90 - 97.5Ω
FULL 7Ω 4.5 - 13Ω
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