Operator`s Manual RM1
Seite/page 82/132 ROTAX KART RM1 Ausgabe/Edition 01/2006
3. CORRECT USE OF THE VEHICLE
3.1. Starting of the engine
Before starting the engine, check whether
3 the fuel tank is filled with fuel and 2-stroke oil at the correct mixing ratio
3 battery is charged and connected
3 battery voltage is higher than 12.4 V
3 throttle cable is moving freely and the carburetor piston is at position of engine idling
3 shifting paddle is in position „NEUTRAL“ (no gear engaged)
When starting take care of the following procedure:
¨ When engine is cold, turn choke lever on carburettor to vertical position.
¨ Push the switch to position "START" (maximum 5 seconds) until the engine starts. If the
engine does not start, repeat the starting procedure after 5 seconds.
¨
When the engine is running, slowly return the choke lever to its previous position.
3.2. Running-in of vehicle (engine)
To achieve longer lifetime of the engine components, the engine must undergo a defined running-
in procedure when operating it for the first time or after repair of parts of the crankshaft drive and/or
the cylinder/piston components the engine.
To assure an optimum running-in phase we recommend using for the first fuel tank filling a
somewhat richer oil/fuel mixture at a ratio of
1 : 33 (= 3 % 2-stroke oil, or 0,3 l / at 10 l of fuel).
(= 3 % 2-stroke oil, or 0,075 gal at 2,50 gal of fuel).
After the running-in phase however use the prescribed oil/fuel mixture of
1 : 50 (= 2 % 2-stroke oil, or 0,20 l at 10 l of fuel)
(= 2 % 2-stroke oil, or 0,050 gal at 2,50 gal of fuel)
to avoid problems like carbonization of the exhaust valve.
Attention: Before running-in the engine, adjust the main jet to the ambient atmospheric
conditions (ambient temperature and sea level). See also chapter “Carburetor
adjustment”. Operating the engine with too lean jetting can cause engine damage.
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