Snowmobile engine problems!?
970069
OMG i got the same problem with my 300 twin special i aint sure wat year mine is, but it does the exact same thing.  it can sit in the garage all summer in the heat but when i go to start it it pulls really hard but it cranks, but dont fire and the spark plugs spark.  Last fall my uncle that used to be a atv mechanic took the carb apart and gave it a good cleaning and it turned right over. it runs good when i can get it started, but yeah, u can use carb cleaner on a sled if that answers your question
1050160
Hate to break it to you but the best place--but not the only place to find such a hard to find item is....yea...eBay. As luck would have it, there's something like what you want up for auction NOW  for $19.99 and THIS auction ENDED 7/2/06  and they weren't sold so you have a chance to buy them or keep looking!\n\nSo if you aren't a member of eBay, you'll have to find someone who is or register yourself (it's free) before you can bid. \n\nIf you don't want those, just keep searching for \nHARLEY DAVIDSON SNOWMOBILE \nin an eBay search once a week...sooner or later they'll be posted!\n\nThe other links could have your decal kit, but again, you'll have to keep going back to check their sites too.\n\nHappy trails!
51345
Very easy. My 14 year old son can fix any of the above. If you're a teenager, join your local 4H club, and select Small Engine Repair as your project. You will learn step by step, and best part is, it's free.
244521
there is an engine i saw that has no moving parts. just magnets that attract water in one end and out the other, but it only works in salt water.
736598
Alaska probably doesn't give a damn if you walk across the snow in a J-style. whats gonna happen? are you gonna get run over by a snowmobile?
408633
It could either be the starter or the alternator, the easiest way to find out without a lot of work is remove the alternator and take it to an auto parts store (most of them test them for free).  If it test out OK check the wire to your starter to make sure it has a good connection. If that is good then you can remove the starter and have it tested, not to hard to replace the starter but they can be expensive so it is a good idea to test it first, and maybe get it rebuilt.
297544
GM had a performance catalog with some parts for this engine but not much. The best thing is to swop it out for a 4.3 but the bellhousing patterns are diffrent.
87582
Been down this road with an 82 Transam that had crossfire injection.\n\nMy recommendation for you is to replace the intake manifold and install a holley 4 barrel.\n\nIn the end you'll save alot of time and effort.
473616
Worn piston rings is usually the culprit. Lower combustion chamber pressure results in incomplete combustion as well as the worn rings allowing blowby into the crankcase. Worn valve guides can contribute to this as well. I'd say it was time for an overhaul or exchange.
399536
They probably lied to you, if its water damage, you cant even boot up the machine, probably resin smell is all you got for electrical short, get another shop to do the fix next time.
369439
i like snowmobiles@!! they rock i crashed one 3 years ago and broke my jaw! well the reason i like snowmobiles is because i like racing my older brother witch posted this question. HI! well you better choose me for the best answer cuz i did you when you answered one of my qustions!!! so hahahahahahahahahahahahahahahahahahahahahahahahahahahahaha!
138013
The top speed of a snowmobile varies individually for each model of snowmobile and the conditions that you are riding in. Modifications to the snowmobile will also affect it's top speed.\n  \n     There are four major Snowmobile manufacturers that sell over 80 different models. Each model is designed for a specific purpose that includes; performance, touring, mountain, and trail riding. Snowmobile models are equipped with multiple engine sizes (expressed in cubic centimeters or cc's) from 440cc's and smaller and up to 1000cc's and bigger.\n\n     Certain conditions such as warm snowmobiling weather (40'F and above) and cold snowmobiling weather (10'F and below) as well as deep snow, hard packed snow, or ice riding and the altitude you are riding at are some factors to consider. for example; a snowmobile with a 440cc engine made for trail riding being ridden in deep unpacked snow (4ft) may only have a top speed of 15 mph (if you dont get stuck first). That same snowmobile being ridden on hard packed snow may have a top speed of 80mph.\n\n     To make a long answer short; The approximate top speed for an average performance sled with a 1000cc engine with good traction can reach speeds up to 120mph.
472473
Get it serviced. They're good engines. You shouldn't have a problem.
332363
you might just need a tune-up, or it could be more serious, try changing the spark plugs, distributer cap and rotor, a fuel additive wouldn't hurt either
87781
Strat pulling th engine then dissconnect anything attached.  TAKE PICTURES OF WHERE THEY CONNECT TO!!  Then recconect them on the new engine and u should be good to go
389921
Unless you have very expensive machine tools, I suggest you go to the local Hobby store. You can install your own pre-built engine. It's cheaper easier and does not require tools you probably can't afford.
488656
cracked head.  anti freeze is mixing w/ the oil.  Gonna need a new engine.