Mr?

Yiben YB 50 discussion forum:


Mr?

Mr? 
kenny said 2011-03-22 23:23 
 
Hi, just rebuilt a Yiben YB50 QT9 engine on an 07 plate,my first attempt at it.
I got it semi built up and tried it, and it actually ran. But next day when it came to try it, no go!!!
There´s no spark at the plug. I bypassed the stand switch, still same.
I put a meter on the Spark lead unit input side, something seems to happen when I try motor start, but can´t detect much of a voltage.
Anyone got any ideas where I can look please.
i´ve no diagrams or anything, so don´t even know where to start looking.
T.I.A for any replies. 
 
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