Originally Posted by LynnEdwards

I'm wondering if the engine is seizing up when it gets warm. After it cools does the starter turn the engine once more without having to charge the battery? When the quad starter is warm and won't turn the engine I would also try jumping the quad battery to a car battery (or another quad battery if you have one) and see if the starter spins faster. That would help determine if the battery isn't able to provide enough current, or if the engine is too hard to turn.

Analog meters work fine. You just have to figure out the voltage by looking at the proper scale graduations behind the needle. A digital voltmeter is probably a little easier, and they are fairly inexpensive at $20 for a decent one.

Originally Posted by LynnEdwards

The way to check out if your battery is or isn't a problem is to jump your quad battery to your car battery using jumper cables. Do take extra care to get the polarity right when you do this.

Now that you have no shortage of available current (with your car battery helping out), try to crank the starter again. Does it spin at normal speed? Does the quad start? If the starter spins at normal speed when jumped to the car then your battery is bad or discharged. The people at the battery store that tested your battery may or may not know what they are doing. The jump test is more definitive...

Do you have a meter?

Originally Posted by CorCor82

I have done the jump test on my Tao tao 250cc atv and it still doesn't turn over fast enough, what do I do? I have checked all connections and they are fine!
Any help would be greatly appreciated.