I forgot to menstion a few things to look for when buying a sled.
1. Find someone you trush who knows snowmobiles and bring them a long when looking a t a sled.
THings to check...
1. Drive axle bearings and suspension bearings are they free wheeling.
2. Consition of the track, any evident wear. tears, etc.
3. Overall condition of the hood, ski's, etc. If the hood is scratched up, give an indication how it was treated. Are the sko's dented up or any dents in the belly pan will also indicated how it was used.
4. Is there a lot of rusty parts on the sled, this will indicated that the sled was stored outside in a damp location.
5. How easy will the sled start. If it is hard to start, it maybe a bad engine, or just needs a carb adjustment.
6. Condition of apolstery?
7. Were there any recalls on thie sled and does it have all the updates.
8. Is the inside of the engine compartment dirty, full of oil. May indicate poor maintenance.
9. Have the carbs ever been removed and cleaned, should be done every year if not every second.
10. Make sure the suspension has been grease, both front and back.
11. Check the springs in the rear suspension, push down on the back of the sled and if it does not spring up very fastm the suspension could be stiff from rust or seak springs.
The front should sring up quickly also.
One more thing to add regarding my first post is to avoid 3 cylinder sleds, reliability is questionable and it hard enough to keep 2 carbs in sync let alone 3. More cyclinder, the more to go wrong. Just my .02
Good luck