My lawnmower keeps on cutting out on me, it starts first time, and i have cleaned the air filter, and also changed the fuel.can anyone please help fix this problem?.
ps its sometimes sluggish and splutters..
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Re: petrol lawnmower cutting out.
Try changing the spark plug. if that doesnt work check the fuek lines for hole and leaks, check the fuel filter and clean if necessary. remove the carbuerator and inspect the gasket; it should be soft and flexible, if it seems hard or brittle replace it. clean the carb with carb cleaner sray (available at any local auto parts store) and compressed air. make sure you get inside the small fuel rail holes. also check the primer bulb for pin holes and proper seating/seal.
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Use a hooked/bent piece of wire or similar to get fuel line and filter out of petrol tank filler hole
Remove fuel filter from end of fuel line
Remove air filter housing
Remove choke control/ plate from carburettor
Ease old fuel line from carb. inlet. And clean inlet tube if necessary
Gently but firmly pull old fuel line through hole in base of tank
Fitting new fuel line
the new fuel line has too big a diameter to fit through the hole in the base of the fuel tank.
To get round this I heated the end of the tube with a lit match (but a blow torch or gas ring would do) until it was soft enough to fashion into a point- take great care the plastic obviously gets very hot and could burn ***** flesh. The tapered end you form should be at least 1cm long. Allow to cool
Trim off the end of the tapered point if necessary
My next problem was to get the tapered end through the tiny hole inside the fuel tank. To help with this I took the innards out of a standard biro then put the fuel line through the empty tube with the tapered end projecting from where the ballpoint used to be. Push the tapered end through the hole inside the tank.(a torch was useful here to help see inside the tank)
Pull the fuel line through from below the tank until you have enough to push on to the fuel inlet on the carb.
Cut the tapered end off the tube and push onto the fuel inlet .
Cut the other end of the tube so there is enough length to reach all parts of the fuel tank.
purchase some carb clean and take your air box(filter) off and hold throttle wide open spray short burst in then try to start, if fires up and quits,try until it goes, prob have to work old gas through it, also make sure your primer is functional full of gas and works o.k.
If you need to clean the filter, remove it from the fuel tank and blow compressed air into it, otherwise you may have to do the following:
Sounds like you will need to clean your carburetor
Sometimes you can get by with priming it a few times, and letting it run a few times like that and it will flush the gunk out of the jets, but most of the time you will need to rebuild the carburetor. If the mower is over a couple years old, then I also recommend that you buy and install a new carburetor repair kit, because the diaphragm will get hard and that will cause it to be hard to crank. When you clean your carburetor and remove the jet screws, count the number of turns it takes to seat the jets from their original position. That way when you go to put the jets back in, you know how many turns they were in/out. Please do not forget to rate me, Thanks Good Luck, I hope this helped
I had this problem twice in the past. I solved it the first time by replacingthe plug and setting the plug gap with a feeler guage. The next time it was a decoke of the cylinder (squirting through the plug hole) replacing the plug and leaving it overnight and then cleaning the air filter. It runs like a dream and has worked in Australia, Europe and the UK with no further problems. Also the fule mix has to be just right, I actually use 22:1 instead of 25:1 and do not use any petrol / gas with additives in (like Shell).
When it starts to bog down, try loosening the fuel cap. If it starts running better, you need to clean or replace the little air intake filter in the center of the cap. If you found this helpful, please don't forget to rate it.