50cc 2 stroke
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50cc 2 stroke
Well a friend of mine is having me fix a small ATV for him. It's a 50cc 2 stroke mini Polaris Scrambler. I need to replace the fuel lines and oil line. Here's the problem. He said that when you ride it for to long, something would get to hot and it would quit. Then if you let it cool down it will run fine again. What would cause it to quit like that?
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OK, make sure you put a small fuel filter in the fuel line,like one for a lawn mower, guarenteed there is junk in the tank from old fuel. next take the carb off and you will need a needle or a torch tip cleaner, right in the center of the carb/after taking fuel bowl off/ there will be what looks like an aluminum tube, should see a jet, they can be tiny that is why you need a needle to clean it out, there should be another jet too to clean out, think its the idle jet, really tiny, make sure you can shoot carb cleaner through all openings, just a note/ you won't be able to stick a needle all the wat through the pilot-idle jet, it will have a small obstruction in there that is why they clog so easy, that obstruction is normal, don't know if it hurts to remove it so I wouldn't mess with trying to. alot of times old fuel will develop a scum on side of the tank and it only take a tiny piece to clog things up, we had a little KFX80 2stroker that would do the same thing. even after you clean the tank still use the fuel filter.
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It's either getting too much fuel or running out of fuel.
When I said lean, I meant air to fuel lean, not oil to fuel lean. As in your air/fuel mixture is off.
So it will start and idle for 20 seconds or so and just die? Then restarts no problem and does the same thing? Are you able to ride it around? What happens if you go to 1/4 throttle or 1/2 throttle, can you keep it running by doing this (effectively going to a different fuel circuit on the carb).
When I said lean, I meant air to fuel lean, not oil to fuel lean. As in your air/fuel mixture is off.
So it will start and idle for 20 seconds or so and just die? Then restarts no problem and does the same thing? Are you able to ride it around? What happens if you go to 1/4 throttle or 1/2 throttle, can you keep it running by doing this (effectively going to a different fuel circuit on the carb).