Force P4

FC engines are made in Taiwan and the P4 costs about $100 in the US. It's mounting holes appear to be the same as Picco's. First off, the design of the crank case and head is changed. The crankcase now looks like P8's and the head is a 50mm cylinder. The engine starts easily in the beginning with the pull-start. Oil starts leaking from the pull-start backplate
after 1 liter of fuel. When this happens the pull-start begin to slip. The cure is to convert the engine to non-pull-start. This can be done easily by replacing the backplate, and removing the starting shaft/spring. After this, there is no leak ;-) An addition benefit of doing this is that the engine will be quieter. Force engines use a unique pull-start mechanism. When the engine is running the one-way bearing won't turn like other pull-start engines, rather the starting shaft is skidding on the starting
plate. This makes pretty loud "ping" noise when the shaft skids a ramp on the plate. Carb adjustment is easy and performance is ok for a 4-port beginner's engine. This engine doesn't like too much oil in the fuel. Blue Thunder and Powermaster are ok.

Force P6

Comment received from ZORBOB@aol.com on 16-09-1999
One of the best motors for the money I've owned, two sleeves later, 8 years old

Force P8

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