My Diplomat 430 has been getting harder to drive recently, slowing down and suddenly taking off again, even pushing it without the motor running is the same, pushes easily then the left drum seizes up, it is not clutch related.
I took the drum assembly apart, cleaned everything and reassembled and everything was smooth until I put the aluminium drum housing back on.
I cleaned the inside of the drum with a wire brush and even used a stone to get rid of any burrs, but the problem remained.
Closer inspection revealed the rubber 0 ring around the housing was swollen and distorted, and I think is the cause of the problem.
Question is, if I remove the rubber O ring will that be a problem? (I'm assuming a replacement is not possible)
As I see it, it is a seal to keep dirt out of the drum gear and will just mean an extra maintenance task every spring.
Anyone else had trouble with a distorted drum housing rubber 0 ring?
