Hi all my first tech question I have just purchased a scott bonner mower with a 3hp engine got it for a bargain as it was not running
I changed the fuel put a plug from my other mower which has a 3.5 briggs engine and she started straight away.
Now that I have it running the engine which has throttle control on the engine but not a control on the mower handle it runs at a lot lower revs than it should even on full throttle.
I removed the air cleaner and cleaner base and can manually get it running faster by moving the lever which has the idle screw but when I do the revs fluctuate badly as though it is running out of fuel.
I have noticed the bit where you adjust the idle screw the screw does not return so the screw does not touch its return position if it do it manually it stalls if you push the little lever type thing where the screw is the other way the revs go right up but that is when it does the fluctuation
Any advice or should I just buy a new carb which most likely to be cheaper than sending it to a shop?