@roll_the_dice posted:OK, so I took the motor out of the engine and neither the flywheel or the pinion pulley have a set screw. Doesn't matter anyway, since the old motor has a 3mm shaft and the new has a 4mm shaft. So where is the best place to purchase a flywheel and pinion pulley. I counted 18 teeth on the pulley and the diameter of the pulley where the teeth are is 11mm. Anything else I need to know when I order the flywheel and pulley? Thanks
Yes, timing belt pitch, belt width are both important. What is the full string printed on the belt?
I think MXL so SDP-SI is one place to search for small belts and gears http://shop.sdp-si.com/catalog/?cid=p470
Further searching MXL 0.8 pitch, 18 tooth is about 11mm OD (0.438in), however bore size is 0.188in = 4.7752mm
http://shop.sdp-si.com/catalog...=a0%3A2%3A.080%22%20(MXL)%3Ba1%3A2%3A18.0&sort=undefined&view=table
You might either bore the one you have or more searching.