1971 Johnson 50hp-20amp fuse by key switch

[melmatt77]

Turn Key - nothing happens. Have ckd.voltage @ motor, all seems good.
Manual says "Check 20 amp fuse between starter & key switch".
Battery is 1 year old & fully charged. When it did start, it seems as though it is not getting a lot of power to turn over.
I cannot find a fuse anywhere. Any help??
Thank You, Kris

 

[tashasdaddy]

Re: 1971 Johnson 50hp-20amp fuse by key switch

red inline holder near starter solenoid.

90% of starter problems are bad connections. remove and clean both ends of the battery cables, so that they are shiney, also the cable from the solenoid to starter. check for nicks in the cables. and make sure the connectors are on the wire good. the cable tend to corrode from the inside out, if nicked, corroded wires, and connections, heat up and cause resistance to the follow of electricity, thus the starter doesn't get enough. you can also take jumper cable pos battery post to large post on starter. with a good connection, the engine should spin. then if the starter is good clean everything and retest. then trouble shoot solenoid. starters can be rebuit at a starter/alternator shop, much cheaper than a new one.

also have the battery load tested at the auto parts store, free, i've had new batteries go bad

 

[melmatt77]

Re: 1971 Johnson 50hp-20amp fuse by key switch

Thank You for Your quick response. We have done pretty much all of what You suggested. In looking thru the manual, it refers to a 20amp fuse between starter solenoid & key switch. For the life of me I do not see a fuse there anywhere. I am not sure if it is maybe it is hidden under a screw or wire connection.
??
Any Add'l.thoughts?
The boat started last night & we turned it off quick as it was late & loud.
Then we tried to start again & it was "nothing-dead"
Thank You, Kris

 

[ezeke]

Re: 1971 Johnson 50hp-20amp fuse by key switch

The fuse holder is on the engine usually connected to the main harness. It may be black on your engine. The fuse will be a cylindrical glass fuse about 5/8 to 3/4".

 

[F_R]

Re: 1971 Johnson 50hp-20amp fuse by key switch

Between starter solenoid and key switch means closer to the solenoid than the switch.

 

[melmatt77]

Re: 1971 Johnson 50hp-20amp fuse by key switch

Thank You Very Much!