oldfarmall
Member
Hello-
I have a Tecumseh HH120 (12HP) engine from late 1960's that is in a PUG 4x4 ATV. My concern is the high vibration of the engine when running. It really vibrates the whole machine at idle all way to wide open throttle. I have rattled bolts loose and plexiglass windshield vibrates from the engine.
The engine runs really well, idles well, no smoke, but it has high vibration. Is it possible that the counterbalance gears are misaligned, but engine will still run normal? The previous owner said that the engine was rebuilt at one point, and they never really used it much after that because they bought a modern 4 wheeler.
This engine has a belt drive salsbury clutch like on a snowmobile to drive the machine. I have removed this clutch from the engine thinking it may be the culprit, but engine vibrates just as bad. Also, pulled engine shroud and inspected flywheel, saw no missing chunks or fins.
Any help on this or info would be great. Thanks in advance!
-Jesse
I have a Tecumseh HH120 (12HP) engine from late 1960's that is in a PUG 4x4 ATV. My concern is the high vibration of the engine when running. It really vibrates the whole machine at idle all way to wide open throttle. I have rattled bolts loose and plexiglass windshield vibrates from the engine.
The engine runs really well, idles well, no smoke, but it has high vibration. Is it possible that the counterbalance gears are misaligned, but engine will still run normal? The previous owner said that the engine was rebuilt at one point, and they never really used it much after that because they bought a modern 4 wheeler.
This engine has a belt drive salsbury clutch like on a snowmobile to drive the machine. I have removed this clutch from the engine thinking it may be the culprit, but engine vibrates just as bad. Also, pulled engine shroud and inspected flywheel, saw no missing chunks or fins.
Any help on this or info would be great. Thanks in advance!
-Jesse