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Old 07-27-2016, 01:54 AM   #1
Join Date: Jul 2016
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Default Outdrive trim cylinders don't work

I have a 2000 Maxum 2800 SCR with twin 4.3L engines and Bravo 2 outdrives. Recently both outdrives trim cylinders stopped working. I believe it's an electrical problem because the volt meters on the dash do not move at all when i try to trim the drives. I have had both outddrives serviced within the last year and they were working in the spring. I think there might be a breaker tripped or a fuse is blown but i cannot identify the correct fuse. I need a layout of the fuses under the dash or instructions on the wiring hook up for the trim pumps. Can anyone help me with information about the outdrive trim cylinders on my boat?

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Old 07-27-2016, 02:07 AM   #2
mmwjr's Avatar
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 7,787

welcome aboard

The two trim pumps are on separate circuits. There are two fuses for each both located at the pump, one on the buss bar between the soleniod's and the other is an inline fuse at the round plug connector for the helm switches.

If both stopped working at the same time it's most likely either a common ground or they both connect to the battery at the same point and the connection have become loose.

Google Mercruiser trim pump wiring diagram

1997 2400 SCR
5.7 Vortec / Bravo 2
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Old 07-27-2016, 02:21 AM   #3
Join Date: Jul 2016
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Thank you for the quick response. I will start at the battery hook up and trace the wiring back to the pumps. Hopefully its something simple like a loose wire.
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mamum trim cylinders

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