mlemmon

Does anybody know what size the screws are that hold the muffler on the norvel .074 engine. And are they metric or american thread.

Thanks

Andrew

Metric: M2 x 18 fillister head.

You can use a socket head screw as a substitute since fillister head machine screws may be hard to find. There's a good chance you will have to get a longer screw and cut it back.

Realistically, I usually buy bulk packs of longer screws in several sizes, then cut to length as needed.