1971 Johnson 40HP outboards Service Manual, Page 69Get this manual
I REMOVAL OF STARTER FROM POWER HEAD
"Due to the construction of the starter motor, maintepance operations are generally limited to periodic
DRIVE END HEAD
FIELD AND ASSEMBLYBRUSH AND TERMINAL LDER BRUSH jSPRING
132"WASHER L
Figure -6Starter Motor Test checking for looseness of mountingUnless it is certain that the starter motor requires attention, do not remove it for overhaulA thorough check should be made of the battery, cables, starting solenoid, and switch as outlined in the Trouble Check Chart in Section 2Check the starter motor by using the no load testWith 10.0 volts applied to the starter motor, maximum current should be 60.0 amperes and minimum speed should be 8000 rpmSee Figure -6If it has been determined that the starter motor is malfunctioning, removal can be accomplished as follows: aDisconnect lead to starter motor