Dirty starter motor pinion gear next to a 1/4-28 hex nut package

Steel nuts will never decay, so this fix will last the life of the motor.

Note that it is NOT necessary to fill the housing with grease, so don't. A light film on the shaft, plastic gear teeth, & metal gear O-ring will be enough.

Original Delrin pins are available, but they'll break down eventually. See p.35 of this PDF:
https://www.henrysautomotivewarehouse.com/2017_web.pdf

See also:
. . .

Owner caption May 2016 · Photo 5576 of 6546