I decided I'd try kicking the bike over a few times to see if I could start it like in days gone by. Back then I would stand on the left side of my Bultaco, lean it over a bit and operate the kickstarter with my right foot. As part of the test I went to use the decompressor. The little plastic lever felt a bit creepy. As I started to kick with light pressure on the plastic lever, it suddenly went back to the bar as if the cable had broken. Worried that something was wrong, I removed the exhaust tappet cover to inspect the operation. The cable is fine and moves the lever OK. With the exhaust valves closed there is the correct 10mm of freeplay as stated in the manual. I can only assume that the exhaust rocker moved and thus allowed the lever to travel all the way back.
When the exhaust valves are closed, is the lever supposed to supply enough force to actually push the exhaust valve open? Or is it meant to interrupt the path of the rocker when the exhaust valve closes, thus holding the valve open until such time as the lever is released? (i.e. ready for the next cycle). Could it ever hold the valve open too far so that there is a collision with the piston?
I haven't even fired the engine yet, I just finished installing Dale's kit and haven't put the carb back on.
When the exhaust valves are closed, is the lever supposed to supply enough force to actually push the exhaust valve open? Or is it meant to interrupt the path of the rocker when the exhaust valve closes, thus holding the valve open until such time as the lever is released? (i.e. ready for the next cycle). Could it ever hold the valve open too far so that there is a collision with the piston?
I haven't even fired the engine yet, I just finished installing Dale's kit and haven't put the carb back on.
