>I would check for any fluid leaks, track condition (dryrot, damage),
>look at tunnel and frame where it cradles the engine for any dents or
>twist, clutch operation, any traces of oil in antifreeze (if liquid
>cooled), smooth suspension travel, also the condition of the bottom of
>the skis, hyfax and track will give you a pretty good indication of what
>trail conditions the sled was ridden in
1. Check out the Skid, (The thing the track is spinning on) see if any of the
holes drilled in it to mount the suspension components. (IDLER WHEELS, SHOCK
MOUNT) If the holes are elongated that obviously means that the sled was
2. Check the Hoses, Heat Exchangers and the Radiator for leaks, if studs were
previously on the track and there were no tunnel protectors installed the Heat
Exchangers and the tunnel will look like a bomb blew up in there.
3. Check the shocks to see if there is any leaks from the shock seals. (FOX
and OHLIN shocks are recommended to be rebuilt every season.) If there is
leaking the sled will more than likely need a new set of shocks.
4. Check for free play in the JackShaft. (Secondary
Clutch+JackShaft+Sprocket(s)+Track) Do this by grabbing a hold of the Brake
Rotor and move it back and forth (Toward the front and rear of the sled), if
there is a large amount ot play then that is another sign that it was abused.
5. Check the Chaincase oil, for clean oil or water in it. If there is water
then it could of at one time in the not too far away past it could have took a
nice dip in a lake.
6. The skis will more than liek need a new pair of Carbides. I dont care how
good or bad the snow conditions were, Carbide/Steel and Cement DO NOT MIX.
Even unloading the sled from the trailer to put it in the Garage or even
pulling up at a gas station to refuel. Alot of Gas Stations have a roof over
the pumps you know.
7. The excessive worn Hyfax (or Slides) might indicate that the sled was
ridden in poor snow conditions. This will present a Lack of lubrication
between the Skid and the Track Clips. If that is the case then you will need
to replace the track clips. The sled could have been run on Grass or Even
Sand. YES EVEN SAND. I SAW 2 GUYS RUNNING SOME FORMULA III's up a SAnd hill
racing some 4-Wheelers.
8. Check the Belly pan (for that fact the whole bottom) for cracks, scrapes and
9. Check the track like the other guy said for Dry Rot or Damage. (Ripped or
worn down lugs). If the track is studded make sure that there is no Rips in
the track. This indicates loose studs (poor maintainance) and also spells a
new track (MAYBE)
10. It the track is studded check the conditions of the studs. (Worn Down,
Chipped, Cracked or missing studs.) More than likely some or even all of the
studs need to be replaced.
The last thing, How in the HELL can you check the oil for Antifreeze in it. I
believe that there may be a possiblity that this cannot happen. Two stroke
motors are either Lubricated by Oil injection or Pre-Mixing the oil and Gas.
You would have a hard time looking in the gas tank for water. And for that
fact looking in the Oil Injector Tank for water.
There is probably more but if I remember anything else I will let you know..