Electric Starter; Exhaust Timing Control; Carburetor; Intake Silencer - Rotax 125 MAX DD2 evo Installation Instructions And Operators Manual

If the combination switch is turned to "ON", the ignition is activated. To start the engine, it only
needs to be switched further to "START" position. An automatic switch reset from "START" to "ON"
is integrated.
2.5.

Electric starter

By turning the combination switch to "START", the circuit between the battery and the electric
starter will be closed by a relay. The electric starter drives the starter gear on the crankshaft via an
intermediate gear with free wheeling, until the engine starts to run. An automatic switch reset from
"START" to "ON" is integrated.
2.6.

Exhaust timing control

The engine type 125 MAX DD2 evo is equipped with an electro-pneumatic exhaust control. The
ERAVE (Electronic ROTAX Adjustable Variable Exhaust) system is controlled by an electro-
pneumatic valve via the ECU. The vacuum required is provided by the engine crankcase.
At engine stop, the exhaust valve is in idle mode and therefore in the open position. With the
engine running, it closes or opens the electro-pneumatic valve of the exhaust, depending on the
speed and therefore it provides optimum performance characteristics.
2.7.

Carburetor

The carburetor (DELL'ORTO VHSB 34) is a slide type carburetor with float system. The standard
main jet is suitable for almost all operating conditions. For extreme operating conditions the main
jet size must be adjusted to the actual conditions according to this Manual.
2.8.

Intake silencer

The intake silencer incorporates an air filter to clean the intake air. The intake silencer has been
designed for optimum reduction of air intake noise level and represents a tuned system with the
engine.
The air filter consists of several layers and has been optimized in the area of air passage and filter
effectivity. If soiled or in accordance with the maintenance requirements, clean the filter with
biodegradable products.
2.9.

Exhaust system

The exhaust system is designed as resonance system with an after-muffler and represents a tuned
system with engine.

2.10. Gear box

The power transmission to the rear axle is via a manually shiftable integrated 2-speed gearbox and
not as usual, via a maintenance intensive chain drive. Changing gear actuates the gear shift fork
and a shifting sleeve which slides on the hollow shaft between the 1
engages in the respective idle gear.
The gear is kept in position by an index pin keeping the gearshift fork in the selected position, 1
nd
gear, neutral or 2 gear.
Seite/page 78/98
Operators Manual 125 MAX DD2 evo
st nd
and 2 gear and then
Ausgabe/edition 11/2014
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