Yes i just got a HMF for my grizzly. IT ran great yesterday when i took it. Now today it got alittle colder and its rainy out. I left it warm up for 5mins then went up the raod alittle. CAme bakc right befor my drive way left off and it backfire. Then i came up to the garage and reved it up and it started missing and shuting off now. I don't know whats up so any help?

 

did u rejet when u put on ur pipe, it sounds like jetting could be the problem to me.

 

No grizzlys run rich i got it fixed now!

 

What was the problem?