venny2522

Righto. Then it must be a problem with the carbs. What would cause the fuel to start dumping out of the bottom of the carb (vent/overflow?) What regulates/shuts off fuel flow in the carbs that might be at fault?

Hey guys. Trying to get our '67 YR1 up and running, and I have encountered a problem. Fuel flows freely from petcock when it is in the "On" or "Reserve" position. Am I correct in my assumption that it should only flow when the cylinder vacuum pulls it from the petcock bowl? When the petcock is turned on, and connected to the carbs, the fuel rushes mostly to the right hand carb, overflows it, and dumps onto the ground at an alarming rate. TIA for your help, Venny2522

Ok, so I have a set of tapered bearings now for the RD400C. How hard is it to change these in the garage? Do I need any special tools? Also if anyone has a guide or just some helpful tips for changing them, that'd be great! Thanks, Venny

Hey everyone. I've got a 1976 RD400C with an interesting steering problem. I'll try to describe it as best as I can, so please bare with me. The steering feels loose in general compaired to my other vintage yamaha bikes. On a sharp turn, even at slow speeds, the steering seems to want to come towards the bike (tank). It feels like theres a spot where any resistance in the steering seems to be lost. When the front wheel is hanging at full droop, the steering seems to be very non-linear. Is it true the RD400C has no steering damper? Could this be the cause of what i'm experiencing? Any help or input you could provide me with would be great. Thanks, Venny