My craftsman tractor wont pull itself up a hill. Runs fine but just comes to a stop when trying to go up a hill. Maby the ground drive belt is slipping????

If it is a Craftsman riding mower, it has to have a drive belt unless it is shaft-driven. Its behaving precisely like a mower which has a drive belt that is so worn its "hanging by a thread - literally". That's why it won't pull a hill but is OK on level ground. You need to replace the drive belt, but you need to find it first. Consult your manual about what belt to use (you can get it at Sears) and the routing pattern.

The transmission drive belt is a separate one from the blade belt. The clutch pedal when released puts tension on the transmission drive belt so it tightens up and drives the gearbox pulley by way of a large spring. Make sure the spring is ok. The belts don't last forever and probably needs replacing looking at the age of the machine. That is a fun job as it is right up under the machine and runs from the engine pulley right back to the top of the transmission. You have to drop the deck right off and I usually find a tree with a large branch and haul the front up with a rope or winch so the mower is vertical. Makes it easier to work on. Drain petrol first though. Hope this helps otherwise get a mower shop to do it for you if you feel it's to much of a task. Good luck.

Your drive belt is off or slipping.

Check the main drive belt, and the linkages from the brake clutch pedal to the pulley that tensions the belt. If you do not find anything there, then remove the back panel, jack up the mower, and turn the transaxle pulley by hand to see if the wheels turn, make sure it is gear.

If you are lucky, it will be a slipped belt or broken belt. I hope this helps get you going.

sounds like the spring on the clutch pully is not tight enouph and the belt is slipping

Depending on the usage of mower it is possible that belt is worn and likely it is stretched just enough to permit slippage. Usually belts will squeal and even have a burning smell. While the engine is often check to see the mechanical actions on the belt and feel for slackness.

Sounds like a loose belt check the tension spring if they ok check and see if belt is strectched

Sounds like you could be running on one cylinder. I assume you have a two cylinder B&S, Tecumseh, or Kawasaki. Remove one spark plug at a time and try driving the mower. If you have nothing on one spark plug and drives exactly the same with the other, then you have a dead cylinder. Can be a spark problem, unlikely a fuel problem assuming a single carb, a bad head gasket, bent push rods. A lot of B&S Vanguard engines, including mine, have a tendency towards bent push rods.

The belt is probably slipping because it is not tight enough. look by the belt, inside there is a little spring, you may half to tighten it.