dealer put about 1/4 tank full break in gas (mix) do you guys think thats enough?
how many miles should you run b/4 sled is broke in..?
how hard do you ride? listening to some of these threads there is no break in time. thx in advance :beerchug:
should i put fresh plugs in after break in period?

Mine also had a 1/4 tank and I mixed it at 40 to 1. Burned all that, then filled it up and mixed it a 40 to 1 also, after this tank is gone, I will run straight gas and ams interceptor for oil.

I have been riding it just like any other, like a raped ape. Just don't hold it on the handle bar for long runs, short bursts only. My runs very strong, you should be happy!!! :div20:

i ran about 50 miles pre-mix in my MXZ 600 HO...people will tell you a variety of break-in procedures...but after 50 miles believe me you wont want to hold back any longer, its so tempting just to pin it and see what she's got in her. good luck with your new sled.
-SkidooMan

Great Question? I've got the same sled and was planning on going approximately 100+? I'd like to hear what some of the vets think.

BTW, what hand guards are you guys going to use or not use?

If anyone cares, here are a couple of pics.

I ran my sled in the garage a couple of times, and the thing smoked bad, even at 120 degrees engine temp. I don't know how much oil was added at the dealer, but it seemed excessive. I added about four gallons of gas. Rode it for 4 miles kinda easy, then let it sit till the next day. Put 16 more miles on it, all the time rolling on and off the gas, with an ocassional full throttle blast for 2-3 seconds.

Don't even start it in the garage and let it idle. I know, it's hard, but the less time spent idling, the better.

Start the thing up, get it on snow, and flog it. Don't hold it WOT more than a couple seconds at a time, but ride it hard. The harder you get on it early, the stronger it will be. Just vary the throttle a lot. Don't be afraid to give it the bidness tho...

I heard about the "not letting it run in the garage" thing after I did it a couple times.
We got a few inches of snow, so I was able to "clean it out". The throttle saw the bars a few times, but only for 2-3 seconds, and no top speed runs....just to 75-80. :div20: :div20: Seems to run strong so far...................... :beerchug:

I dont know what is best way to break in. But from what I'm doing to my two sleds. My 2002 X-EDGE 800cc. I break in it at 800 miles. It never lost drag. And always save gas than other sleds even I ride HARD. My 2005 Fusion 900cc. I break in almost 800 miles. And I drag with other 2005 Fusions.. 3 of us and all of us is almost equal winner depend on who have better traction and it is winner. We have all close call. MPG on Fusion. All of us have same mpg. Other of my friend dont break in his Fusion that well but we have same MPG and same POWER. So guess it dont matter? I dont know. But I still doing those break in to 500 miles. Manual book say suppose to break in 250-300 miles. But I'm doign extra, hopefully to make my motor go faster and last longer. My way of break in is.. dont go over 50 mph for 100 miles and no hard pull. then 200 miles gain to 70 mph and pull more.. gain on each miles.... That's what I'm doing to my sleds.




Click to view attachmentClick to view attachment

If you saw the video I posted, my sled had 0 miles when I started, that's how I break them in. You have a very narrow opportunity to seat the rings and that's the best way to do it. My belt on the other hand didn't like it too much.

Sleds are tough for proper break-in, Because:

You want to have huge cylinder pressure to seat the rings squarely (hard pulls, but not long at WFO)
But at the same time, you need to break-in the belt gently. But I guess having to replace a belt due to hard engine break-in is easier to deal with than having a slow engine with lots of blow-by because you didn't seat the rings correctly by babying it.
there is a small window to get those rings to seat fully and correctly, letting it idle or running it while not under a heavy load is almost the worst thing you an do!


Also, remember that oil in gass effectivly leans out the mixture because oil is taking place of fuel.

Someone posted a website for proper break-in which is completely opposite from what most manufacturers say.

Was it Mototuneusa or something like that?


Basically it boils down to "break it in hard, and it will always run hard", A slow break in means a slow motor."


Can someone post a link to the guy that has the site I am refering to please?

Here is the URL you were looking for

Breaking it in
:beerchug:

I couldn't agree more, break it in hard. Maybe not any loooong WOT runs but a lot of 1000' give or take WOT runs back to back with break it in nicely and will run good for you after some miles are put on.

What type of oil are you using for break in period? I have been using Amsoil Interceptor in my previous sleds, but according to the above article it says no synthetic. That may be the reason why my last sled seized twice because of me babying the break in period.

Amsoil interceptor and the 2000 series are great oil, but not for break-in, it is too slick! you want a petroleum based oil with less lubricating qualities like the good synthetics. I know it sounds BASS-ACKWARDS but it works.

As for the siezing from a light break-in, I highly doubt it! mostly you would get a glazed cylinder situation with poor ring sealing and lots of blow-by

What kind of sieze was it?
Cold siezing is way common on some sleds. especailly the late 90's Yammies

To avoid a cold sieze: Let the engine warm fully before WOT..
If you don't, the pistons will expand before the cylinders, and things get too tight because the cylinder is surrounded by cold coolant and takes longer to expand.
!
Or another common cause is when the sled is shutdown for a half an hour or so when it is bone-ass cold out. Then re-firing the sled, and going WFO before letting it warm again. the pistons and cylinders may still be holding some warmth and properly expanded, then the super cold coolant from the exchangers hits the cylinders and quickly contracts them to smaller than the warm pistons.

Get this, last year at the world championship races in Eagle river, I was freezing my ass off out there (negative 18 F.) waiting to see the guy that does backflips over the jump. He cold-siezed his sled on the way to the track. And this guy has a fully sponsored, professional support crew!!!! Ya think they would have known better to send him out on a cold sled!!! What would have happened of it siezed coming off the jump?

When I picked my sled up I asked if it is ok to break in with synthenic and I was told that the Liberty engine was designed to be broke in with synthetic oil, maybe that bullshit but I'm breakin mine in with ams, and running it hard, no long runs WOT. So far so good.