1977 75hp johnson stinger

vergil

Petty Officer 1st Class
Joined
Sep 18, 2010
Messages
250
I am getting the ol motor ready for the season and i am going over the motor just to make sure everything is up to par. I have a few simple ?s
that motor doesnt have a **** hole for the water pump, how do i know its working with the muffs on?
I have put new lower unit oil in it but doesnt seem to hold but 1/2 a quart should it hold more?
how do you know the charging system is working,(put on the volt meter and if its showing more then 12 volts its ok?)
what size battery is correct for this motor? the cold cranking amps on the battery it has now is 550
 
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