June 27, 201016 yr i recently got a gas gas 125cc 2005 and have not been out on it yet but started it up and left if running for about 20 mins today and the fan never cut in at all is something wrong with the bike, i have toped the coolant up what do you think....
June 28, 201016 yr The first thing to eliminate is the fan motor. Bypass the sender with a short piece of wire and see if it runs all the time. If not, you can check the fan with a seperate 12v battery.
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