2007 Johnson 2 HP 4-Stroke Service Manual, Page 128Get this manual
GEARCASE INSPECTION Pinion Gear Inspect the teeth of the forward gear and pinion gearIf excessive wear, chip or other damage is found, replaceInspect the return springIf excessive wear or other damage is found, replace
Inspect the propeller shaftIf excessive wear, twist or other damage is found, replace
Inspect the engaging dogs of the forward gearIf excessive wear, chip or other damage is found, replace