Hello everyone, I just bought this HR-5111 at a auction, it has 3600 hours. I have run it maybe 2 hours max since I bought it. I bought all new filters for the oil, air, fuel, and hydraulic system, etc. and went today to change all that, but when I took off from the field, after about 50 feet, it started clunking under the seat and killed the engine. The pedal feels like the linkage is messed up, but I'm thinking it's internal. For a moment even though it's not suppose to start the engine without the brake on, I was able to start it and it drove forward till I shut it down (due to having no foot/speed control). It ran like a stick shift with the clutch out and turning the key to slowly start the motor... If anyone has any idea of where to go from here, it would be much appreciated. Also, a friend who runs the same machine at a city, tells me it's normal to have to rev the motor at least half way for the hydraulics to work when even lowering the deck?? Same experience with other owners?? Thanks for any advice/help!!