19/04/2019
V2.0
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A properly regulated and primed engine usually starts after one or two pulls (pull starter
version) or two seconds of electric starter use. A well tuned engine works steadily at idle
speed, though immediately after the start-up the speed is much higher than 2000 rpms and
decreases during the warm-up. When you have problems with this, the reason might be:
•
Over-flooding
– too much fuel in the carburetor
Symptoms: When engine starts with a few strokes and cuts out, but with each start-
up attempt engine works a little bit longer and then cuts out, we are dealing with a
too rich mixture. When engine is over-flooded it might be necessary to push slightly
the handle throttle and change the sparkplug for a dry one.
•
Not enough fuel
Symptoms: The engine does not start at all, or works shorter with each start-up till it
ceases to start. In that case one should add a small amount of additional fuel into the
carburetor.
Warning: Do not flood the carburetor with additional fuel when the engine is still warm
– it might damage the spark plug isolator or cause problems during the next start-up.
Warning: For electric start motors, never continuously run the starter for more than 2-
3 seconds, and allow the starter a 10 second cool-down in between starting attempts. This
will dramatically increase the lifespan of your starter.
4.2 Turning off the engine
In order to turn off the engine you should reduce all power and push the red button on the
gas throttle, wait till the engine stops completely. If you release the button earlier the
engine will start up again.
4.3 Emergency engine stop
In the event that the kill switch malfunctions; the engine can be turned off by bending the
fuel line until the engine stops. In addition the engine can be killed by removing access to air
through covering the air box intake ports.
