Question about Loncin Motorcycles

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I have a loncin 250 atv quad think its the farmer modelstruggles to start but when it does it runs ok but if I switch it off hot wont start till goes cool again any ideas

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Check the spark first. It should jump a 1/4" gap minimum. It is best to use a spark tester or a good used spark plug with the gap opened up. Don't hold the plug lead by hand or metal pliers when testing.
If it doesn't do it's thing then the ignition coil is the usual culprit. It would need to be replaced.
If it has good spark then it's likely to be too much fuel or not enough air.
First check the air filter since it is easier to get at. Make sure it''s clean and hasn't collapsed to block intake.
Make sure the cold start control (choke) is returning fully. It could either be a choke system or an extra fuel system on the carburetor.
Next option would be the needle valve in the float bowl. This keeps the fuel level consistent.
If the valve is worn or there is something stopping it from seating properly, too much fuel can cause flooding.
Another rare possibility is a punctured or damaged float. The float closes the needle valve when the right level is reached.
There are other possible carb. faults that a full clean and check will reveal, but not likely to be the cause of your problem.

Posted on Nov 22, 2014


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Posted on Jan 02, 2017

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SOURCE: loncin diamo atv 250cc wont move!

if it just revs up the the centrifical clutch needs to be changed but if it doesnt then the trans or the rear end might be jamed or even locked up.

Posted on Jun 07, 2012

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