hey i'm new to the forum but anyway i just bought a used '96 scrambler 400 and only payed $1000 for it but i am having a problem with it overheating, the fan ceased up so i put a new one on and wired it to a switch due to the temp. sensor is also bad and wont tell the fan to turn on, is there a thermastat on it or could it be the water pump, any help would be much appreciated

 

probably a thermo like any other liquid cooled

you should get it hooked up right, works like a charm

i have the same bike

 

no thermostat on polaris 400 2 stroke , yes could be water pump if still overheating

 

well i just did some trouble shooting and the water pump is pushing water, and after pulling the radiator out of the bike i was able to wash it very, very well and got the large amout of mud out, also discovering that the radiator does have some damage and i know that it was in a front end collision (from the previous owner) i've narrowed it down to a bad radiator, after running for a good 10-15 min it had not overheated at all, as compared to being very hot in about 3min. before

 

check the elbow coming out of the radiator fluid resivoir it could be split.