1978 Johnson 175, 200, 235 HP Outboard Service Manual, Page 126Get this manual
kInspect forward and reverse gears, pinion gear, and thrust washers and bearings for wearReplace if worn1Wash needle bearings in solventOil bearings immediately with clean light spindle oil to prevent rustingInspect bearingsmCheck pump pressure relief valve for grooves; replace ball and seat if wornnInspect shift components for wearclutch dog engagement surfaces, push rod key, plunger keyway and shift rod thrust bearingShift rOd, thrust bearing, and plunger are serviced as an assembly onlyoInspect shift assist componentsAll parts must be perfectly free of galling and burrspInspect "0" ring and bushing in shift rod cover for wearReplace "0" ring if wornSee Figures 6-76 and 6-77If bushing is worn, replace cover and bushing assembly rectly over the outer edge of the housingWhile holding even downward pressure on both the tool and the housing, use feeler gauge to measure the distance between the leg of the tool marked 1.862 and the outer machined edge of the housingSee Figure 6-78The measurement obtained is the thickness of shims required for reassembly(Zero clearance