1978 Johnson 55 HP Outboards Service Manual, Page 102Get this manual
REMOVAL OF STARTER
Due to the construction of the starter motor, maintenance operations are generally limited to periodic 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 Prestolite starter motor by using the no load testWith 12 volts applied to the starter motor, maximum current should be 80 amperes and minimum speed should be 6500 rpmCheck Bosch starter no load testWith 12.0 to 12.4 volts applied, maximum current draw should be 32.0 amps, speed 5750 to 8000 rpmSee Figure 7-4Remove starter motor for test as follows: aDisconnect lead from starter motorbRemove air silencer as described in Section 3cRemove three starter mounting screwsFigure 7-6See