Zongshen cb250 weak spark and oil in the magnet.

[GooGaby250]

I am in the phase of repairing and replacing parts on the machine. A set of new electrical installations from aliexpress was installed. Tried to start the engine, without success, spark plug wet, started to push, gives weak signs that he could start but does not start. The spark plug shakes a little. Since I have never encountered this machine, I do not know if there should be oil in the space of the magnet. I think maybe that's why the current is weak. There is a lot of oil in the magnet.

[GooGaby250]

sorry for the bad english. I'm using Google Translate

[Skywalker]

im experiencing same situation, need all help i can get
ty in advance

[GooGaby250]

so far I found out from the videos that it is normal for the oil to be in the area of ​​the magnet / flywheel. That's why there is a gasket on the cover, a rubber on the stator wiring and a rubber on the anlaser. So you don't have to worry about that. The problem is in the valves and the camshaft, which is completely destroyed, it is worn by approx. 3 mm, I don't know how it happened.

[GooGaby250]

Does anyone know how to mount the cam chain on a zs169fmm machine, the piston is 69mm. I have a chain of 102 links and 104 links. 102 links are too short and 104 too long, regardless of the tension in which phase it was. on the 102 link, it needs a little bit to sit, but I'm afraid that it would be too tight and could damage the camshaft bearing. by the way, I don't know if it is the original cylinder on the machine, because I read that the piston should be 65.5 mm.