OS 91 FS 4 stroke instruction manual
I'm currently looking for a manual for the OS 91 FS four stroke engine that tells all about tuning, parts list, what bits do what.
I bought a model with this engine in it and had a bugger of a job getting it to run. finally sorted out the problem (had the wrong plug and was detonating at higher revs) but I would like to read a little on the motor and suggested tuning methods.
If any one has a copy to spare or can scan it and put it up here or email it, I would be very appreciative.
I never owned a four stroke before. Having just taken the hobby up again after a looooong break, I am suprised at how far the technoligy has come in both gas/glow and electric engines. Its waaay cheaper to fly now with the good gear than it was when I was a kid.
I was king of the block with a frog 15 diesel and a sanwa four chnl back then.
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