Getting shocked in forward and reverse.

[marshall5744]

Bought a 1972 bowrider with a johnson 65hp . Have rebuilt carbs and fuel pump. Starts and runs great. BUT, the engine and throttle control shock the crap out of me in forward and reverse. I have run it at night and can't see any sparks. Had a bare wire on the rectifier I fixed.
Need some advice on what might be shorting out on the engine or controls.
Thanks.

 

[racerone]

Sounds like the " kill circuit " has a bare wire somewhere.

 

[saltchuckmatt]

Bought a 1972 bowrider with a johnson 65hp . Have rebuilt carbs and fuel pump. Starts and runs great. BUT, the engine and throttle control shock the crap out of me in forward and reverse. I have run it at night and can't see any sparks. Had a bare wire on the rectifier I fixed.
Need some advice on what might be shorting out on the engine or controls.
Thanks.

Probably something inside the box.

I know a few captains that could use that function!

 

[marshall5744]

Probably something inside the box.

I know a few captains that could use that function!

Thanks senior. I'm also a retired BTCS. 71-92

 

[marshall5744]

Sounds like the " kill circuit " has a bare wire somewhere.

Kill circuit?
If I take a screw driver and jump it from the throttle connection rod to the engine casing, it dies immediately.

 

[Crosbyman]

electricity goes to the easiest path and you ..... find the wire chaffing

 

[stresspoint]

anti theft device , please post what the cause was so as i can set up a switch .

would be a great trick to play on a mate as well , im always working on boats for mates , some i would love to see there reaction to a shock wwhen the put their boat in gear

 

[McGR]

If you disconnect the black and yellow wire at the powerpack and the problem goes away, you then know the problem is that kill circuit insulation is breaking down somewhere. Note - if you do this you'll need to choke the motor to make it stop running as the kill circuit will be disabled.

 

[marshall5744]

Will let you know what I find, stresspoint, you sadist.
Can't find a wiring diagram with a black and yellow wire on it.
Thanks.

 

[WIMUSKY]

Interesting. Years ago I raced tunnel hulls and during 1 race I was getting electricuted the whole race by the shifter.... Either the rectifier or the coil pack was loose. Once I tightened the mounting bolts it quit. Not sure if it used the mounts for the ground. Another guy had a shocking experience during the same race...

 

[marshall5744]

Interesting. I'll clean and check those mounts. The shifter/throttle is where it got me the first time.( got me like 5 times before started asking for help). Duuhh
Thanks

 

[McGR]

Wiring diagram:

https://maxrules.com/graphics/omc/wiring/1972_65_Eshift.jpg