someone

hi, i just bought a snowmobile (2006 POLARIS 550 TRAIL TOURING FAN)
and the guy i bought it from said that i need to regulate the clutch. he said there are some kind of weights inside and you have to set them for your elevation. If i don't do that could my engine break down ??? also he said to check the jetts? could anything be wrong with them? do i need to replace them? It has 2000 milage.... Thanks!!!!!!!!!!!!!!! Please reply!!!!! Thanks!!!!!!!!!!

BRPforlife

Welcome to the forums someone.
You must rejet the carbs for your altitude to maintain a proper air/fuel ratio. I'm not to sure about adjusting clutch weights for altitude, but I'm sure Irjosh or another one of the mountain guys will be able to shed a little bit more light on the subject.

someone

with the "rejet the carbs for your altitude to maintain a proper air/fuel ratio" can i do it my self or do i have to go to the dealer? is there some sort of instruction to do it? Thanks again

plyr2k

im not sure what kind of carbs you have but pull them off and look at them. On the bottom there should be a little hose with an end in it. Take that off and in side there will be a little nur looking thing with a hole in it. thats your jet. Go to your dealer and get the factory jetting and a jet wrench. Pull out that little nut and thats your jet. The higher the number on the jet the bigger the whole the more fuel gets through it youll run richer.

As for clutch weights. When you get really high up and your sled wont turn all of its rpms and there all needed then slap on some lighter weights and itll turn all its rpms. Shouldnt ever have to worry about that.

brown435

Welcome to the forum!
Changes in elevation causes the air density to change. Starting at sea level going higher and the air gets thinner.
The engines today in automobiles use fuel injection and compensate this air density change by changing the amount of fuel injected into the engine.
Since your engine is caburated the jets are a fixed diameter and SET for a specific elevation .... air density fuel/air mixture.
Too much fuel and you clog up the system. Too little fuel and you burn up the engine.
The fuel on a 2 cyle cools and lubricates the engine prior to leaving the engine.
I would suggest you to go to a mechanic and have them install a dial a jet so you can manual change the jets for various elevations( if you plan to go to multiple elevations.). Or you need to take it to a mechanic that knows the size of jet for the constant elevation you ride .

brown435

So now you have three options to change the jets: Do it yourself. Noy difficult if mechanically able to do so.
Have mechanic change the jets for a specific altitude.
Like 6000 to 8000 feet.
Install a dial a jet so to set the jet for a wide range of altitude. ( If you do this make sure you ckeck the setting or set it to an overly rich setting so you don't run lean on a lower altitude ride)

brown435

The weights on a clutch vary to the power band of the sled and the snow conditions. The weighs help control the POINTS where the clutch engages at various RPMs. Maybe some one else can help since I have others set them for me. Plus the weights are influenced by many more parameters than a carburator setting.

ITriumph

Just so you don't go waist valueable gas money. Don't waist it on a jet wrench. Just use a 6mm ( I believe) socket.

__________________
snow and ice imagery
extended forecast for Alanson




And on the eighth day, god created snowmobiles .

I_R_Josh

Someone- Are you using the sled at more than 3000-6000 feet elevation difference from where the sled was usually ran? If not then the guy just wanted to sound like he knew what he was talking about and throw a buncha mechanical terms out there. But if you want to be sure about it you can get the service manual for it and it will have charts that list what jets to use at which altitudes and temperatures, along with pictures and instructions on how to change them.
My dad has a 550 fan trail rmk and it is easily the least finicky of all the sleds I ride with. I don't think he's ever changed a jet or messed with clutching at all and it pretty much runs great all the time. Myself and the other guys are constantly tweaking with our sleds and he just goes out and rides. I'm looking at a couple different models with the 550s in them for my wife just because I've had such good luck with them.

__________________
Ride Hard...complain later