Hunting generator

[Muddymike]

I have an 8 year old 2.2 kva Chinese petrol generator. It hasn't had much use but from early on it had a habit of the engine revs rising and falling rhythmically. This soon settled down once load was applied. However I used it to power some lights at the weekend and despite having just over 1kw load it still did it resulting in the lights rhythmically fluctuating in brightness.

I had a look at it yesterday evening and even tried a 2kw load and it still did it. I tried altering the mixture and throttle stop with no improvement.

Any suggestions on a cure?

Mike

[The Natural Philosopher]

look for whatever governs it and try and reduce friction in it

[meow2222]

+1

NT

[Dave Liquorice]

Aye, how fast did it hunt?

If nothing can be found wrong with the governer, there might be a jammed/out of position flap valve in the carburetta. Had this with a B&S engined lawn mower. Whether a chinese engine has a similar thing I don't know. The flap valve was part of the "rubber" pump diaphragm/gasket between the top and bottom halves of the carb.

[Muddymike]

Just back after working away from home for the past week. I had it running again and can't see problems with and links in the governor arms, all seems to move smoothly. Next stage will be to strip down the carburettor.

Mike