Sorry for long post but wanted to give as much detail as possible.
A little history about this engine, off a snow blower and had the 2nd shaft with pulley. Was a really clean engine inside and still had factory hone marks on cyl wall. Still went ahead and did complete rebuild with rings, etc. When I put back together used a regular HS50 side cover & cam. The governor on side cover was identical to original. Started right up and idles great (New Chinese carb & mini bike throttle control kit)
Not sure but think this issue has something to do with the governor? I did the gov adj according to the book. As I mentioned after complete rebuild the engine starts right up and idles fine, but when you move throttle control it will only move carb lever a little like it's being held back by gov, but if you push on gov arm it moves throttle lever and revs fine. I’ve spent at least 2 hours trying all different spring settings, etc. If I put spring on any of the top holes on gov arm it pulls throttle lever out of idle position to full open (see first 2 pics). When started gov pulls throttle lever back to idle position and then throttle control works ok but don’t think it can be left like that.
If spring is put on any of the gov arm 3 bottom holes everything moves fine until engine is started and then throttle lever will hardly move at all with throttle control. If I push on gov arm motor revs fine and runs full speed as it should (see last 2 pics)
Oh yea one more thing, Don't think it has anything to do with this issue but the few times I've converted these snowblower engine throttle assemblies over to mini bike with the kit that's sold I've had to use a longer screw for it to move throttle control lever that pulls spring for gov arm. Screw that comes with kit is always too short and bottoms out?
Not much in the L head manual for Gov on horizontal engines. So far I’ve spent around 3 hours trying all different spring holes, link holes, etc.
Any help appreciated.
Thanks in advance
A little history about this engine, off a snow blower and had the 2nd shaft with pulley. Was a really clean engine inside and still had factory hone marks on cyl wall. Still went ahead and did complete rebuild with rings, etc. When I put back together used a regular HS50 side cover & cam. The governor on side cover was identical to original. Started right up and idles great (New Chinese carb & mini bike throttle control kit)
Not sure but think this issue has something to do with the governor? I did the gov adj according to the book. As I mentioned after complete rebuild the engine starts right up and idles fine, but when you move throttle control it will only move carb lever a little like it's being held back by gov, but if you push on gov arm it moves throttle lever and revs fine. I’ve spent at least 2 hours trying all different spring settings, etc. If I put spring on any of the top holes on gov arm it pulls throttle lever out of idle position to full open (see first 2 pics). When started gov pulls throttle lever back to idle position and then throttle control works ok but don’t think it can be left like that.
If spring is put on any of the gov arm 3 bottom holes everything moves fine until engine is started and then throttle lever will hardly move at all with throttle control. If I push on gov arm motor revs fine and runs full speed as it should (see last 2 pics)
Oh yea one more thing, Don't think it has anything to do with this issue but the few times I've converted these snowblower engine throttle assemblies over to mini bike with the kit that's sold I've had to use a longer screw for it to move throttle control lever that pulls spring for gov arm. Screw that comes with kit is always too short and bottoms out?
Not much in the L head manual for Gov on horizontal engines. So far I’ve spent around 3 hours trying all different spring holes, link holes, etc.
Any help appreciated.
Thanks in advance
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