I've been searching the problems on the 660 to get a better idea of the problems people are having, and the overheating problem seems to be the biggest problem (at least lately). Is this a problem with everyone's machine when you drive slow or are in muddy situations where you can't go faster to keep it cooler? I see some have resorted to drilling or cutting away some of the side covers, I personally don't like the idea of having to cut and hack on a brand new $7000 machine to get it to stay cool. Is this the only fix for this problem so far? Does anyone own a 2003 model? Is this a problem with the new model year too? Sorry for all the questions, but I'd like to get a better understanding of the problem before going out and buying a new one. [img]i/expressions/face-icon-small-smile.gif[/img]

 

The local Yamaha dealer told me there were no changes or improvements between the 02s and 03s.

 

I want to buy a Grizzly for my wife but I am waiting for the first year problems to be fixed. I have a friend that has a Grizzly 660 and it has overheated on him several times when we have ridden together. He also has the left front shaft problem and it has sputtered twice when I have been with him crossing streams. So far thought his floorboards have not started sagging. I am disappointed because I heard Yamaha is not going to address these problems in there 03 model.

 

To put a word in, my grizz660 hasn't overheated, and the heat shielding in it is extensive. ( have a dealer take the right side panel off to look for yourself. It's a no tool job task.) I haven't been using my grizz for heavy work though, my rancher has taken full work duty for now.

 

I have an '02 Grizzly. No problems until last weekend. Boulder patch in the AK Range, 93 degrees, 2 mph for 3 hours. Got so hot, the gas in the tank was boiling. Pulled a vacuum on the tank, dumped hot gas out pressure safety valve, and vapor locked. Both panels and seat came off to cool down. Cooled relatively quick though. Going to wrap exhaust with header tape, and try a product called "Wetter Water". Increases surface tension of coolant...supposed to work well on hot-rod cars. Anybody have any better ideas??? Bad *** ride other than this one hiccup though.

 

Smitty~

I guess I'm one of those endangered Yamaha Grizzly 660 owners. Never had a spit, sputter, burp, vapor lock, boiling gas, indigestion, high colersterol, etc., and it's been put through heck and back. [img]i/expressions/face-icon-small-wink.gif[/img]

SilverBear