Yamaha MM700A Manual page 53

TROUBLESHOOTING
LIGHTING COIL
TEST
operate the starter motor. A starter relay carries the heavy
electrical current to the motor. Depressing the starter
switch allows current to flow through the relay coil. The
relay contacts close and allow current to flow from the
battery through the relay to the starter motor.
Do not operate an electric starter motor
continuously for more than 5 seconds.
the motor to cool for at least 15 seconds be-
tween attempts to start the engine.
Troubleshooting
Before troubleshooting the starting circuit, make sure:
2. Battery cables are the proper size and length. Replace
cables that are undersized or damaged.
All electrical connections are clean and tight.
3.
4. The wiring harness is in good condition. with no worn
or frayed insulation or loose harness sockets.
5. The fuel system is filled with an adequate supply of
fresh gasoline.
Switches
Check the main switch and the starter switch as dc-
scribed in Chapter Six.
Testing
Open the shroud.
2. Locate the battery in the engine compartment and iden-
tify the positive and negative battery cables.
als or vapors released from flammable
chemicals.
ble from the starter motor lead to the positive battery ca-
ble. Then quickly disconnect and remove the jumper
cable. Interpret the results as follows:
a. If the starter motor ran, perform Step 4.
starter motor as described in Chapter Six and per-
form the bench tests to isolate the problem.
4. Disconnect the connector from the starter relay (Fig-
ure 18). Connect the black starter relay terminal to the
positive battery terminal with a heavy duty jumper cable
Allow
(Figure 19). Momentarily connect the red/white starter
relay terminal to the negative battery terminal with a
NOTE
When performing the following tests, make
sure to conned the test leads properly.
Do not leave the jumper cable installed in
Step 3 connected more than a few seconds.
Excessive use of the cable may cause addi-
Because sparks may be produced when per-
forming Step 3, perform the test with the
snowmobile clear o f all flammable materi-
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