Setting Of The Exhaust Valve Timing - Rotax 125 MAX DD2 evo Installation Instructions And Operators Manual

 Attention: Use only fully synthetic 2-stroke oil. BRP-Powertrain recommends to use XPS
Kart-Tec oil.
 Attention: The engine may never be operated without load. Is it operated (i.e. on the trolley)
r.p.m. over 13.800 1/min are possible, this shortens the lifetime of components
(conrod, big end bearing etc.)
6.4.

Setting of the exhaust valve timing

The opening time of the exhaust valve is setted 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.
 Attention: The ground wire (pos. 1) must be continuously connected to the cylinder head cover.
This is important for the general function of the engine.
Mode 1:
See Fig. 9.
Additional cable (pos. 2) is NOT attached to the ground wire (pos. 1) on the cylinder head cover.
The control of the exhaust valve timing is activated at 9100 r.p.m.
 Note: Isolate the additional cable (pos. 2) with an electrical/insulating tape to the ground
wire, so that a possible contact with the engine ground does not affect the function.
Seite/page 93/98
Operators Manual 125 MAX DD2 evo
Fig. 9
Ausgabe/edition 11/2014