Just bought the 07 650 H1 and only have about 23 miles on it. My question is about overheating. After driving around for awile the fan will come on then after a bit it will go on and then go back on again. The fan seems to come on a lot, more then it should. The overheating light has never come on to my knowledge. When i put a winch on, i had the dealership take a look at it, and they said everything checked out ok. After a bit of driving it gets very hot, even the storage compartment in front of the seat gets very hot. I don't know if it is because it is not broken in yet or what but it worries me that i could burn something up. Any feedback would be appreciated.

 

THe fan's run more on these machines. Just check to make sure you have coolent, and if it is full and your overheat red light doesn't come on you have nothing to worry about. What I did with my H1 was install a temp gauge. Get one at Wal Mart, mount it on your Pod, and get some brass fittings from Home Depot or whereever and slice it into your upper radiator hose. If I recall, my fan would come on at 190 and off at 160.

Welcome to the forum! [img]i/expressions/face-icon-small-happy.gif[/img]

 

Hey , thanks a lot for the info. I will have to try that out. I did check the coolant and it was to the top. I also read that putting some water wetter(or whatever it is called) seems to keep the engine a little cooler.

 

Check the radiator for mud often. You should see light (of a flashlight) pass through the radiator. Also be careful pressure washing the ATV not to bend the fins.

 

If you live in a climate where temps don't freeze, "Engine Ice" is an excellent product. Good luck [img]i/expressions/face-icon-small-happy.gif[/img]

 

All great information, thanks guys.

 

Here is a minor modification that I made to my 2007 650 H1 (270 km old).

I do a lot of slow trail riding so I installed a set of 2006 side panels (I call them "half panels" because they only cover the top half of the side). I personally believe that the full length side panels do not allow the warm air around the engine to dissipate, especially at low speeds. I believe the full panels trap the air around the engine. Look at the 2005 Yamaha Grizz when it first installed the full panels. They over-heated the fuel in the gas tank and next year the Grizz came with vented/louvered side panels and extra heat tape under the fuel tank.

I have my own theory as to why the front compartment gets warm/slightly hot. First, it's located directly above the engine. But secondly and more importantly, there is an enclosed air chamber (not sealed) that houses the air filter. The intake for the CVT transmission is pulled from this area and also the hot exhaust from the CVT. It's kind of a foolish set-up because the hot CVT exhaust air empties into this enclosure about 3"-4" from where the fresh air intake for the CVT is located. Therefore the air in this chamber just gets progressively hotter as the quad runs. The guys running snorkels off of their CVT wouldn't have this problem; only the stock set-up.

Looks like AC worked on this problem for the 2008 700 H1 EFI. The fresh air intake for the engine and for the CVT are located in this same enclosure. BUT the CVT exhausts it's warm air toward the rear of the quad by the fuel tank filler. Much better set-up. The entire airbox has been re-designed.

GH

 

I'll have to try putting differnt side panels on, or just take them of all together.

 

Mitchell87 - That's a good idea. Just pull off the full length side panels and try riding like that for a while. It works for me because I basically idle down the bush trails, especially when I bird hunt in the fall.

As an experiment, try riding trails for half a day with the panels and then remove and ride the same trail at similar speeds. See if you notice the fan coming on more often and staying on longer. You may not notice any difference or the heat may bother your legs. Worth a shot.

Good luck. GH