This just started happening.
Then you are giving the quad gas it makes a rhythmic clunking sound. kinda loud. But only when you're on the gas. if i let off it stops.
It doesn't sound like it's something from the motor though.
One of my friends said his sled made this sound when the belt was going bad.
Any ideas?

 

Mine does the same thing. I've yet to be able to tell where it's coming from. I'd like an answer as well.

 

Hopefully someone will know.
Otherwwise i'm gong to rip into it this weekend.
I can't risk that thing breaking down on a trail in the middle of nowhere.

 

Sounds like you have a belt going bad. I've had this problem a few times as well. It's a real easy fix. Replace belt.[img]i/expressions/face-icon-small-wink.gif[/img]

 

Would a Pure Polaris replacement belt be the best or is there another brand out there that would be better? My quad is a stock quad.

 

my factory chain guarge has made this noise when it has gotten out of wack before, make sure it is tight. its easy to fix, if this doesn;t stop it follow the suggestions listed above.

 

umm... could it be the piston slaping ive heard of that makin similar noises if thats the case get that thing fixed quick

 

piston slapping normally has a little higher pitch tinging sound. this or more like a clunk. it sounds heavier then that.

Doesn't the chain normally make noise power on or power off because it's always spinning around.

 

DITTO

 

Hey BlackRaptor, did you get this figured out? I changed the belt on mine and it's still doing it. I also tightened up my chain and chain guard. I still can't pinpoint where the noise is coming from. It kind of sounds like it's from the front drive shaft area. Do you think it could be something with the front drive shafts?