Quite often a bad aluminum flywheel ring is what starts eating the fiber starter gear and it only takes one bad tooth on the flywheel ring which is easily overlooked. Also the China Clone fiber gears are weak.
(Briggs had a starter aluminum flywheel ring replacement kit but it's now a NLA item for the opposed twins.
I keep a eye and ear open for old Briggs flywheels that have been thrown out due to bad stator magnets and quite often they have a good flywheel ring.
Just grind the head off the rivets and then use 1/4 20 screw/bolts to mount instead of rivets.
(Briggs had a starter aluminum flywheel ring replacement kit but it's now a NLA item for the opposed twins.
I keep a eye and ear open for old Briggs flywheels that have been thrown out due to bad stator magnets and quite often they have a good flywheel ring.
Just grind the head off the rivets and then use 1/4 20 screw/bolts to mount instead of rivets.
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