Operator`s manual
Operating Instructions FR 125 MAX, FR 125 Junior MAX and FR 125 Mini MAX
Seite/page 93/104
Ausgabe/edition 02/2006
7. Stopping the engine
Push the button of ON/OFF switch in, and the engine will stop.
¡ Note: The ON/OFF switch serves also as an emergency stop if engine operation must be
interrupted (e.g. carburetor piston stuck in full throttle position).
¡ Note: Close the ignition circuit by the ON/OFF switch only for engine operation.
At engine stop with the ON/OFF switch on the ignition unit will consume current thus
discharging the battery completely leading at the end to damage or ruin of the
battery.
8. Running-in procedure for the engine
Attention: Pay attention to safety advice of the kart manufacturer.
To ensure that components have the longest possible life span, the engine must be subject to a
defined running-in period at first operation of engine or after a repair of the crankshaft or
displacement parts.
To warrant the best running-in conditions we recommend to fill the fuel tank the first time with
slightly oil-enriched gasoline/oil mixture of 1 : 33 (3 % oil). After the end of the running-in period
run the engine without fail on the specified oil/gasoline mixture of 1 : 50 ( 2 % oil), to prevent
trouble like coking of the exhaust valve.
Attention: A fully synthetic 2-stroke oil must be used.
Start the engine and run the kart for 15 minutes on a race track changing load and engine
speed up to
• 7.500 r.p.m
Then run the kart for 15 minutes with load and speed changes up to
• 9.500 r.p.m.
Load and speed changes mean:
Fully open the accelerator until the engine reaches the r.p.m. mentioned above – lift of the
accelerator completely – until the r.p.m. comes down to 5.000 r.p.m. and accelerate again.
After this running-in period the full power of the engine may be used.
Warning: The engine may never be operated without load. Is it operated (i.e. on the trolley)
r.p.m. over 14.000 1/min are possible, this dramatically shortens the lifetime of
components (conrod, big end bearing etc.)