4/6/2013 4:04 AM
If you still haven't located your problem, you may take a look at the solenoid/valves. I had this happen on a sidewinder, replaced the cartridge and everything was good. Sticking just enough to let flow through to keep blades turning at a very low speed. Sometimes you can get away with cleaning the cartridge shaft and the inside of the solenoid and use some dielectric grease.
Regards.