1974 Johnson 40 HP Outboard Motors Service manual, Page 10Get this manual
CLEARANCE CHART POWER HEAD
LOWER UNIT .017 Max- .007 Min
Piston ring gap
Prope lle shaft in Cront gear
bushing'
.0020 Max- .00 10 Min
Piston ring groove .0040 Max- .001 Minclearance, lower
Rear everse gear .0020 Max- .0005 Minto ea bushing ist on pin to .0010 Max,.0001 Minpistonloose end
Reverse gear
Cy linder and piston
Crankshaft end play
.0015 Max- .0005 Min
.0050 Max.0030 Min,Oi Max- .003 Min
bushing to propeller shaft
Propelle on haft at ri ve pin ho Prope ller on shaft
- above the
shoulder
.007 Max- .003 Min
.0069 Max- .0034 Mi n
TORQUE CHART
POWER HEAD
LOWER UNIT
100105 Footpounds
Flywheel nut