i have owned a few onans over the past few years and have not been too lucky with them. i used to have a couple onan motors in a couple sears garden tractors. although 1 tractor was a parts tractor, the other was usable. i did end up getting it to run and it ran good sometimes but no matter what i did it never seemed to be very consistant at running good for long periods of time. i eventually got rid of those and we now have a wheel horse with an onan motor. this one appears to be much more reliable to run. i have been told there are certain models of onan motors to stay away from? is this true? if so what models were most reliable? i love the sound and power of these motors but i am half afraid of buying one if it is non running.