Earthing / Shorting Question

[johhnnybuoy]

Hi

i have a1986 Johnson 70hp

Two questions

1. Does the mechanical fuel pump (vro replacement) need to be earthed? If mounted to a bracket connected to the motor mount, it doesn't correct? Even if it's touching another part of the block?

2. Would turning the motor off in gear/ attempting to restart the motor in gear blow the main fuse?

Thanks
J

 

[racerone]

The PRESSURE operated pump does not need a ground.------There is a switch that prevents cranking when control box lever is in gear.----Nothing to do with a fuse!!

 

[johhnnybuoy]

The PRESSURE operated pump does not need a ground.------There is a switch that prevents cranking when control box lever is in gear.----Nothing to do with a fuse!!

Thanks. Good to eliminate my fuel pump mounting hack job.

Neutral wasn't fully engaged when I tried to start, is there a possibility that switch therefore wasn't engaged and starter tried to draw too much current to crank engine and blew fuse?

 

[racerone]

The fuse has nothing to do with the starter drawing too much current.----The fuse is part of the circuit that energizes the solenoid.-----I have said it many times---" 12 volts and wires are not well understood"----And smoke / mistakes can be expensive.

 

[johhnnybuoy]

The fuse has nothing to do with the starter drawing too much current.----The fuse is part of the circuit that energizes the solenoid.-----I have said it many times---" 12 volts and wires are not well understood"----And smoke / mistakes can be expensive.

Here's the past events that led to the fuse blowing

-started motor in driveway multiple times, fuse didn't blow
-tested boat at lake, boat started fine, fuse didn't blow
-turned boat off, then went to turn back on again and fuse blew

Where do you recommend starting the diagnosis, based on the above? I know correlation does not equal causation, but the only thing different when the fuse blew from all the other times I started the boat, was that neutral wasn't fully engaged.