RCGF 26ccBM Operator's Manual page 18

Many of the RCGF Ignition modules have an additional lead to plug into the Digital
Tachometer. If your ignition module does not have this additional lead, the Digital
Tachometer can still be used. Simply use the Y-harness (included with the Digital
Tachometer) to connect to the pick-up lead from the engine. Be sure to secure all
connections and to secure the Digital Tachometer or leads on the aircraft used.
Engine Maintenance
Please clean the fuel filter in the RCGF Carburetor periodically. Failure to do so may
result in miss-calibration of the needle adjustments. In order to do this it is necessary to
remove the Phillips head screw which secures the carburetor filter cover and the