3W 42i Engine Manual
more infos: www.3w-modellmotoren.de
for this purpose. Important: The interior of the fuselage must be sealed to prevent damage from
gasoline that sprays from the carburetor. Use a thin epoxy or other appropriate fuel proofing
method. Do not overlook this step as gasoline will melt some materials like Styrofoam very quickly.
Ignition
Consideration needs to be given to the placement of the electronic ignition module. Avoid placing
the module in the path of hot air. Mount the ignition module using the four supplied rubber grommets
so as to create a 1/16" gap between the ignition module and the mounting surface. Without this
1/16" gap the ignition module can overheat. Important: If the electronic ignition overheats it will
malfunction (e.g., backfiring or shutting down).
Ignition details:
•
The red cable is positive (+)
•
The ignition timing has been set at our factory
•
When fitting a new ignition it is important to achieve the correct coordination of the sensor(s)
to the magnets
Refer to our special ignition description for further information
Canister mufflers
To prevent damage to the header(s) a flexible support bracket is required to mount the canister(s).
The location for this bracket should be at the canister's center of gravity. 3W canisters have a
reinforcement ring at this location.
We suggest creating two compartments in the front section of the fuselage by installing a horizontal
