I took apart my lawnmower to put a gasket on it and when I took it apart the gears inside fell apart. I put them back in but I'm not sure if the timeing on them is corect. Now the lawnmower won't start and it did before I took it apart.

I took apart my lawnmower to put a gasket on it and the gears inside fell apart. I put them back in and now it won't start. I think the timeing is off. How do you set it so I will start?

Hi,
Would be a likely circumstance. The crank gear will have marked tooth that fits in a marked gap between teeth on the cam.
Peace,
Clarke