Setting Of The Exhaust Valve Timing (125 Max Evo Only) - Rotax 125 MAX evo Installation Instructions And Operators Manual

SETTING OF THE EXHAUST VALVE TIMING (125 MAX EVO ONLY)

Tools required:
• Allen key 4 mm or Socket wrench 8 mm
Due to the principle of equal parts, the harness for all MAX engines is identical. For en-
gines without E-RAVE, the auxiliary cable (pos. 2, Fig. ) must be attached and isolated to
the ground cable so, that a possible contact with the engine ground does not affect the
general function.
The opening time of the exhaust valve is set in the ECU and depends on the engine
speed. However, the ECU allows two different modes of the exhaust valve opening. These
can be selected by connecting an additional cable to the cylinder head cover.
Variant 1: Additional cable on battery ground
A:
See
The additional cable is NOT attached to the ground wire. The control of the exhaust valve
timing is activated at 7900 rpm.
NOTE
Isolate the additional cable with an electrical/insulating tape to the ground wire so
that a possible contact with the engine ground does not affect the function.
B:
See
The additional cable is attached to the ground wire. The control of the exhaust valve timing
is activated at 7600 rpm.
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Page 6
Edition: October 01 2019
BRP-Rotax
Operators Manual
The ground wire must be continuously connected.
This is important for the general function of the engine.
Ground wire
Ground wire
ATTENTION
Effectivity: 125 MAX evo, Junior MAX
evo, Mini MAX evo, Micro MAX evo