I
Irish John
Guest
Some while back I posted a thread about my Honda GXH50 locking up during installation when it ran perfectly before. That thread is on the link below:
http://www.motoredbikes.com/showthread.php?t=13937
I have now discovered what locks the motor up and it's not a piece of black plastic in the crank like I found when I split the engine open down the diagonal. It happens when I remove the governor but it has nothing to do with that either. When I remove the governor I also remove the stock tank and stock exhaust and the stock exhaust black plastic cover is held on by 2 bolts one of which also goes through the Honda start\stop switch and screws into the engine block. This bolt is then used to go back into the start\stop switch to secure it back in place after the exhaust is removed. The bolt screws back in but it goes a little bit further because the exhaust shroud has been removed. When it goes a tiny bit further in it blocks the metal fins on the fan inside the pull starter and this totally locks the engine and stops it turning over. The problem is resoved by putting a small washer and spring washer to stop the bolt before it goes too far and blocks the fan.
I believe that this may only happen on Australian Hondas and that the US ones may use a slightly shorter bolt but it sure took me a while to work out why the motor was locking up every time I used a Honda GXH50. I hope this might help people avoid all the faffing around that I went to the fiirst time it happened. As for the piece of black plastic in the crank that I found last time well it wasn't what locked the motor and I don't know how we fixed it that time.
Here is a picture of the problem and the offending bolt:
http://www.motoredbikes.com/showthread.php?t=13937
I have now discovered what locks the motor up and it's not a piece of black plastic in the crank like I found when I split the engine open down the diagonal. It happens when I remove the governor but it has nothing to do with that either. When I remove the governor I also remove the stock tank and stock exhaust and the stock exhaust black plastic cover is held on by 2 bolts one of which also goes through the Honda start\stop switch and screws into the engine block. This bolt is then used to go back into the start\stop switch to secure it back in place after the exhaust is removed. The bolt screws back in but it goes a little bit further because the exhaust shroud has been removed. When it goes a tiny bit further in it blocks the metal fins on the fan inside the pull starter and this totally locks the engine and stops it turning over. The problem is resoved by putting a small washer and spring washer to stop the bolt before it goes too far and blocks the fan.
I believe that this may only happen on Australian Hondas and that the US ones may use a slightly shorter bolt but it sure took me a while to work out why the motor was locking up every time I used a Honda GXH50. I hope this might help people avoid all the faffing around that I went to the fiirst time it happened. As for the piece of black plastic in the crank that I found last time well it wasn't what locked the motor and I don't know how we fixed it that time.
Here is a picture of the problem and the offending bolt:
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