Okie dokie, six years after initially acquiring my Bird Duck project for an insane amount of money on Ebay (I learned my lesson there) I'm still struggling with this Tecumseh H35. I started with a mighty poor looking example of an engine and successfully rebuilt it fully, bringing it back to a near-new glory.
My problems are two fold: when the engine is off and, the throttle actuates just fine; meaning when I twist the throttle, the plate opens up on the carburetor and closes when I close the throttle manually. When the engine is running, it doesn't actuate at all. Moving the spring between the governor rod and the throttle linkage helped somewhat, as I found one of the holes in the gov. rod where it would open and close the throttle, though action seemed somewhat delayed at times. Many times, i would open the throttle and hold it for two or three seconds before the throttle plate on the carb would react.
Second, the baffle plate behind the flywheel that's part of the cooling shrouding keeps coming loose. I'm not sure if excessive end play in the crank shaft would cause this, but something in the form of excessive vibration seems to rattling it loose. The end play is right on the borderline of what is considered within tolerance by the Tecumseh service manual, so I'm thinking I'll try and throw another shim in there to take up some of the slack.
The only reason I'm considering resolving this issue is because of the insane (or close to it) amount of time I've spent trying to get the right engine on this bike.
Any insight to the aforementioned issues would be great, as I've never dealt with a mechanical governor before. For the record, I did properly adjust it as per the service manual.
My problems are two fold: when the engine is off and, the throttle actuates just fine; meaning when I twist the throttle, the plate opens up on the carburetor and closes when I close the throttle manually. When the engine is running, it doesn't actuate at all. Moving the spring between the governor rod and the throttle linkage helped somewhat, as I found one of the holes in the gov. rod where it would open and close the throttle, though action seemed somewhat delayed at times. Many times, i would open the throttle and hold it for two or three seconds before the throttle plate on the carb would react.
Second, the baffle plate behind the flywheel that's part of the cooling shrouding keeps coming loose. I'm not sure if excessive end play in the crank shaft would cause this, but something in the form of excessive vibration seems to rattling it loose. The end play is right on the borderline of what is considered within tolerance by the Tecumseh service manual, so I'm thinking I'll try and throw another shim in there to take up some of the slack.
The only reason I'm considering resolving this issue is because of the insane (or close to it) amount of time I've spent trying to get the right engine on this bike.
Any insight to the aforementioned issues would be great, as I've never dealt with a mechanical governor before. For the record, I did properly adjust it as per the service manual.
