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Old 05-09-2013, 02:54 PM   #1
City: Fremont
Country: US
Vessel Name: Ring of Fire
Vessel Model: Mainship 34
Join Date: Dec 2012
Posts: 9
Fuel shut off problem

The fuel shut off on my Mainship 34, 1984, only works when the engine is cool. Cleaned the electrical contacts at the solenoid. Any suggestions would be appreciated. The engine is the Perkins 6 Turbo.

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Old 05-09-2013, 03:23 PM   #2
Phil Fill's Avatar
City: Everett Wa
Country: US
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,879
Our gen set is a Perkins and when hot it will not start up. So I wired a separate start and a on/of switch to by pass all the electronic control stuff. Gen set works fine when cold and after cooling down, but there are times that I need to restart the gen set.

Took a couple of hours worth of test to figure out the wiring. I came off the starter's positive, to a new on/off switch which powers the fuel solenoid, and the start button. It sort of run parallel with the old. To stop I have to turn off both on/off switches. I also installed a start button for the 671 in the engine room as I like to be able to feel, hear and see what going on.

Anyway you might want to install a new on/of swtich bvetween the power and the solenoid to turn the power off.

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Old 05-10-2013, 06:30 AM   #3
jleonard's Avatar
Join Date: Jun 2008
Posts: 2,409
Clean and lube the shaft of the solenoid. Also make sure the linkage is not binding. A new switch might also help. I had to do all of the above to my 78 Mainship when I first bought it. Sounds like your solenoid is not making full travel. Good luck.
Jay Leonard
Attitude Adjustment
40 Albin
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