I have a Forest Service cabin in Arizona. My next door neighbor sold his cabin. He was just to old and couldn't keep it up. His 3 grown boys wanted nothing to do with it. The new owner opened the shed and along with a bunch of vintage tools was a Manco Thunderbird - 3.5 HP. He gave it to me. It's been sitting for ~ 20 years. Like new except for sour gas, lots of gum, and a float that was glued in place. I have changed the old muddy oil, added fresh gas, washed it, and off I went.
It suffers from a throttle control system that is incomprehendable! It won't idle and has poor power, yet if the throttle plate is manually actuated the engine happily idles and roars when the plate is opened. That's my story. Any clever suggestions on optimizing the throttle control would be appreciated. One note; it may have been apart or tampered with. I put it back the way I found it. GB
It suffers from a throttle control system that is incomprehendable! It won't idle and has poor power, yet if the throttle plate is manually actuated the engine happily idles and roars when the plate is opened. That's my story. Any clever suggestions on optimizing the throttle control would be appreciated. One note; it may have been apart or tampered with. I put it back the way I found it. GB