Ski-Doo REV series 2007 Operator's Manual page 82

When the engine is not running, depressing the START/RER button
will engage the electric starter on vehicle so equipped and start the
engine.
Electronic Reverse
All Models
When the engine is running, depressing the START/RER button will
command the engine to reverse crankshaft rotation as driving the
snowmobile in reverse is achieved by changing the direction of rota-
tion of the engine, not by shifting the chaincase in reverse gear.
When depressing the START/RER button, the electronic module will
practically slow down the engine RPM to a stop and advance the
ignition timing to cause crankshaft rotation reversing.
Engine will automatically shift into forward when starting after stop-
ping or stalling.
Shifting procedure will take place only when the engine is running.
If engine is running at a speed above 4300 RPM, the reverse function
of the START/RER button is cancelled.
It is recommended to warm up the engine to its normal operating
temperature before shifting.
Start Mode
Liquid Cooled Models
NOTE: For fan cooled models , refer to IGNITION SWITCH.
To start engine, push START/RER button and hold until engine has
started.
CAUTION: Do not hold START/RER button more than 10 seconds.
A rest period should be observed between the cranking cycles to
let starter cool down. Holding START/RER button when engine
has started could damage starter mechanism.
Release START/RER button immediately when engine has started.
If engine does not start on first try, wait a few seconds then repeat
procedure. To stop engine, turn off engine cut-out switch or pull off
tether cord cap.
NOTE: If necessary engine may be manually started with rewind
starter.
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