Villiers f15 over revving problem

Hi, i bought a non running f15 with a gen set attached, went through the usual, no spark, muck in the fuel etc. starts well but revs like mad, any ideas ??? thanks

I've got an F15 on an Allam Minigen but not really studied it, sounds like maybe a governor setting issue?

mattblack wrote:I've got an F15 on an Allam Minigen but not really studied it, sounds like maybe a governor setting issue?

 Also check that throttle hasn't come loose or stuck open.   What carburettor is it?

Thinking about it, don't alternators have to run at a certain speed to produce certain voltage? (If that make sense). Maybe it needs to rev high and that's what it's governed at?

I've got a cheap (£20 IIRC) digital contact tacho from ebay, might be a thought to see what the revs actually are.

I had a look at my F15 manuals today, governor set-up is normal Villiers practice, i.e. less tension on the spring = lower speed, more tension = higher speed.

I take it the position of the governor arm on the spindle has not been disturbed?

The nylon governor gear inside the crankcase on those later Villiers engines break up, I have had several that were in pieces, so if nothing else works I would check that.

Pete.