Recent content by Apexpat

Yeah that’s the plan. Back to the UP after this big dump of snow. Guess I better stock up on belts

I don’t think I’m over thinking was just trying to figure out why the issue when I have 20 years on these machines with the same clutch’s and zero issues. I’m fine that stuff breaks but I don’t want to replace with a new clutch and have this happen again. Just confirming that people think 8DN...

So your solution was a new primary. Did you have the grooves machined smooth or just replace with a new clutch? What doesn’t make sense is why this isn’t a problem for most Yamaha sleds. I’ve owned 5 other 4 stoke Yamahas using the 8DN belt with zero issues. You’d think this would be widespread...

My 13 Apex has 18,000 miles original clutch, used only 8DN belts no belt issues. 12 Vector with 11,000 miles less horsepower eating belts, makes no sense.

Strange that this is finally rearing its ugly head after all these years. I’ve run the 8DN since 2003 in all my Yamahas with great longevity.

There is a definite groove in the center of the primary. So if I get another primary clutch what is the answer so it doesn’t happen again? Not run the 8DN belt something softer?

Yep that lower lower protection plate bent up the front lip causing the new belt to rub against it. I immediately heard it after changing the belt and had to pull off and bend straight and rerevet.

You may be onto something with the exhaust clamps causing excessive heat. The sled has 12,000 miles with the original donuts. I noticed it sounded a little louder this year and on this past trip had a slight backfire after letting off full throttle. So you’re saying exhaust gas blowing by the...

I feel like my issue is just the opposite of yours. Belt sitting too low in the secondary and causing the top edge to heat up and come apart. I added the shims back and it’s even with the top of the clutch or slightly above with an occasional squeal at idle. Will also check alignment and if not...

Anybody out there on thoughts for suddenly blowing all these belts

Op lo is on every start up you can’t reset that.

I have a 12 Vector that has suddenly started eating belts, 3 in the last 1000 miles. I purchased the sled with 5,000 miles it had an Ultimate 805 belt on it with stock clutching. Ran it a few thousand miles and blew the first belt. Put on a new 8DN belt and lasted about 2,000 miles. One thing I...

Did you ever find a solution to your problem? I have a 12 Vector that has suddenly started eating belts, 3 in the last 1000 miles. The first 2 were older belts so I thought ok let’s put on a new one, blew a new 8DN belt in 400 miles. I usually get 4-5000 miles on all the apex and vectors I’ve...

Is this something that will get progressively worse or just affect the hot start? Other than having to turn the key twice it runs fine.

No codes acting like an old 2 stroke carb sled on a hot start. Like my sxr 600 red top had to feather the throttle while you pull started it when hot