Does anyone have a maintenance manual available for subject riding mower? Our RC club mower's drive pedal is now extremely hard to push down all the way. A helpful user on another forum suggested it may be the variable speed pulley hanging up. He offered advice on how to check this by removing the battery and battery box. I haven't had a chance to go try that yet as I only go out to fly on weekends. In the meantime, I've been trying to locate a maintenance manual for this model. Does anyone know of a source for one or have additional advice for our mower's symptom?

Thanks in advance!