Liquid cooled engines are supposed to go 10,000 hrs or more. Ive had air cooled engines go 4000 to 6000 with very few problems. I would say if the price is right. Check out the water pump. Even if that goes it can be rebuilt for a couple hundred. Blowers last a long time if maint. properly.
On an air cooled TM it would be considered alot of hours, on a Liquid cooled TM I would say thats not alot at all.
