Yamaha MM700A Manual page 157

ELECTRICAL SYSTEM
2. The CDI box (A, Figure 11) is mounted on the side of
the airbox. Detach the wire connectors (B).
3. Remove the screws holding the CDI to the airbox and
remove the CDI box.
4. Install by reversing the removal steps. Before connect-
ing the electrical wire connectors, make sure the connec-
tors are clean of all dirt and moisture residue. Use
electrical contact cleaner to clean the connectors.
IGNITION COILS
Troubleshooting
Refer to Chapter Two.
The ignition coils are mounted on the airbox (Figure
12).
1. Open the shroud.
2. Label the spark plug caps then disconnect them from
the spark plugs.
3. Disconnect the ignition coil electrical connectors,
4. Remove the screws holding the ignition coils to the
fore connecting the wire connectors, make sure both con-
nector halves arc clean of all dirt and moisture residue.
Use electrical contact cleaner to clean the connectors.
Spark Plug Caps
Replace the spark plug caps by pulling the old caps off
the coil's high tension wire. Reverse to install. Make sure
the cap is pushed all the way on the high tension wire.
VOLTAGE REGULATOR
The snowmobile is equipped with two voltage regula-
tors, one of which is also a rectifier. The rectifierlvoltage
regulator (A, Figure 13) contacts the current to the bat-
tery, and to the lights and instruments (if so equipped).
The voltage regulator (B, Figure 13) directs current to the
grip warmer circuit.
1. Disconnect the rectifier1 voltage regulator or voltage
regulator wire connector.
2. Remove the bolts securing the rectifier/voltage regula-
tor or voltage regulator.
3. Installation is the reverse of removal steps. Before con-
necting the electrical wire connectors at the unit, make
sure the connectors are clean of all dirt and moisture resi-
due. Use electrical contact cleaner to clean the connectors.
Testing
Refer to Chapter Two.
ELECTRIC STARTING SYSTEM
An electric starter motor is used on some models. The
motor is mounted horizontally on the front of the engine.
When battery current is supplied to the starter motor, its
pinion gear is thrust forward to engage the teeth on the en-
gine flywheel. When the engine starts, the pinion gear dis-
engages from the flywheel.
The electric starting system requires a fully charged
battery to provide the large amount of current required to
operate the starter motor.
The starting circuit consists of the battery, main switch,
starter relay, the starter motor and connecting wiring.
Starting system troubleshooting is described in Chapter
Two.
151