Starting System; Ignition System - BOMBARDIER Traxter 7400 Shop Manual

Section 05 ELECTRICAL
Subsection 02 (OVERVIEW)
Voltage Regulator/Rectifier
A 3-phase full-wave shunt-type voltage regulator/
rectifier receives the AC voltage and rectifies (con-
verts) it into DC. The voltage is also regulated to a
maximum of 14.5 volts (DC).
Battery
The battery supplies the entire vehicle and partic-
ularly the MPEM which then distributes the cur-
rent to many components. Therefore, DC current
only is used in the entire electrical system.

STARTING SYSTEM

When ignition switch is turned on and start/stop
switch is pressed, the MPEM sends a signal to the
starting solenoid. The battery then supply the
starter through the starting solenoid to start the
engine.
TYPICAL
1. Battery
2. Ignition switch
3. Start/stop switch
4. MPEM
5. Solenoid
6. Electric starter
Engine can be started in any gear (from 1 to 5).
Transmission lever must be on PARK or NEUTRAL
to allow engine starting.
However, an override mode allows to start the en-
gine with the transmission lever in any position
when holding any brake lever while pressing the
start button.
05-02-2

IGNITION SYSTEM

An IDI (Induction Discharge Ignition) system is uti-
lized. The ignition system is made up of the follow-
ing components:
TYPICAL
1. Battery
2. Ignition switch
3. Start/stop switch
4. MPEM
5. Magneto flywheel
6. Trigger coil
7. Ignition coil
8. Spark plugs
Battery/Ignition Switch
The ignition switch allows battery to supply the
MPEM for the ignition system.
Start/Stop Switch
Besides enabling the starting system, the start/stop
switch enables/disables the ignition system through
the MPEM.
MPEM
(Multi-Purpose Electronic Module)
The MPEM is fed by the battery but the ignition is
activated by the ignition switch. The MPEM re-
ceives the signals from the start/stop switch as
well as from the trigger coil and takes action to the
ignition system. The MPEM feeds the ignition coil
so that a spark is produced at the proper moment.
The MPEM controls the spark advance according
to different pre-defined parameters.
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