I picked up an 04 Grizzly 660 a week ago. I had been looking for a while when I came across this clean-looking 04 with 585 miles, 199 hours. Spoke with the owner before purchase and he seemed pretty sincere and honest. The quad was not abused, I can tell my looking at it - very clean, nothing broken/cracked/torn.
Had it shipped 1000 miles, went through it, changed all fluids - oil and filter, diffs, coolant flush, new spark plug, greased. Thought I was all set to enjoy it for months with no problems.
I took it out on Saturday, drove it through some woods then down a side-street when at about 40mph I felt something explode near my right foot. My first thought was that I blew the front tire. Pulled over, looked everything over and all looked ok. Hopped back on, put her in H and tried to take off...nothing, no movement. I pretty much knew at that point what had happened, even though I couldn't really believe it. I did a ton of research on what to buy before I purchased and I could not find ANY complaints about the CVT in the Grizz. Brought it back home and pulled open the case to find 20 pieces of belt and teeth from the primary fixed sheave inside the case. I also found what appears to be some type of twine or rope wrapped around the inside of the secondary. I'm have an appointment to drop it off at the shop on Friday. I can't believe I'll be putting hundreds into this machine already. wtf.
I guess I'm just ranting, but I really don't know how this could happen.