07-01-13, 03:16 PM
Hi Padraig, and welcome to the forum.
Firstly the carbs. Hopefully you've blown through all the passageways with compressed air to clear any gunk that congealed out of old fuel. I'm not quite clear what you've been adjusting, but the slow jet has more of an effect on the mixture at small throttle openings than the needle that is attached to the piston/diaphragm assembly. If everything has been fiddled with a good starting point is the circlip for that needle in the middle position and the slow adjustment (right at the front of the carb nearest the engine) wound out two turns from the fully closed position.
The easiest way to check the float height is to attach a length of clear tubing arranged in a 'U' to the drain of each carb in turn and check where the fuel level stabilises.
If the broken spring is the one that sits in the diaphragm then yes, it needs replacing. If it's one that provides resistance to stop an adjuster from moving with engine vibration then yes, it needs replacing. :lol
Starter button... it could easily be the contacts inside just need a clean. I've had that happen on mine and mine's normally parked under cover. It's easy enough to take apart and clean up with emery paper, but a pain in the arse to persuade everything back inside the housing afterwards. Hopefully your multimeter will help with diagnosis. At least the lack of fan shouldn't be a problem for another six months!
Firstly the carbs. Hopefully you've blown through all the passageways with compressed air to clear any gunk that congealed out of old fuel. I'm not quite clear what you've been adjusting, but the slow jet has more of an effect on the mixture at small throttle openings than the needle that is attached to the piston/diaphragm assembly. If everything has been fiddled with a good starting point is the circlip for that needle in the middle position and the slow adjustment (right at the front of the carb nearest the engine) wound out two turns from the fully closed position.
The easiest way to check the float height is to attach a length of clear tubing arranged in a 'U' to the drain of each carb in turn and check where the fuel level stabilises.
If the broken spring is the one that sits in the diaphragm then yes, it needs replacing. If it's one that provides resistance to stop an adjuster from moving with engine vibration then yes, it needs replacing. :lol
Starter button... it could easily be the contacts inside just need a clean. I've had that happen on mine and mine's normally parked under cover. It's easy enough to take apart and clean up with emery paper, but a pain in the arse to persuade everything back inside the housing afterwards. Hopefully your multimeter will help with diagnosis. At least the lack of fan shouldn't be a problem for another six months!