Thread Tools Search this Thread Display Modes
Old 10-24-2016, 09:35 PM   #1
Veteran Member
City: North fort Myers, fl
Vessel Name: Cara Mia
Vessel Model: Mainship 34 Rumrunner
Join Date: Sep 2014
Posts: 32
Rocker starting switch

I have 2005 MS Rumrunner 34, twin Yanmars. The starting rocker switch doesn't always work, it takes several try's to get it started. I want to replace but not sure what I need or who might have it. When ever in doubt always ask the pool of knowledge.

Cyn143srog is offline   Reply With Quote
Old 10-24-2016, 09:58 PM   #2
Valued Technical Contributor
DavidM's Avatar
City: Litchfield, Ct
Join Date: Aug 2012
Posts: 5,613
It might be the switch or it might not. Raise the helm station and look underneath that switch. Jumper the switch a couple of times with a short piece of wire. If that solves the problem then I think that switch is a Carling Contura model.

But if the problem doesnt go away with jumpering, then it may be a bad connection or a bad solenoid. Clean and tighten all connections at the switch and down to the solenoid. Also check the ground.

If that doesnt work, then run a temporary 14 gauge wire from the heavy starting lug and touch it to the pos terminal of the solenoid. If that works then check the connections as described above again.

If it doesnt work then it is probably a bad solenoid.

One thing I am not sure is maybe there is an intermediate solenoid between the switch and the heavy starting solenoid. Many engines have them. So check both as described above.


DavidM is online now   Reply With Quote
Old 10-25-2016, 08:17 AM   #3
City: North Charleston, SC
Join Date: Sep 2010
Posts: 4,385
You will usually find a manufacturer's name (or symbol) and a model number printed on the side of the switch. You may have to remove it to see this.

Test it as described above and if you determine that the switch is defective, use the information on the switch to find a replacement.

You say you have two engines so I assume there are two starting switches. Just swap them and see if the problem swaps with the switch or if you have a problem with the same engine. If the problem goes with the switch, you have your answer. If not, it's something other than the switch.
rwidman is offline   Reply With Quote
Old 10-25-2016, 05:58 PM   #4
Tom.B's Avatar
City: Cary, NC
Vessel Name: Skinny Dippin'
Vessel Model: Navigator 4200 Classic
Join Date: Jul 2009
Posts: 5,783
Rocker starting switch

Yea... just touch the switch posts together and see if it happens. If it does, maybe check the stud bolts on starter and see if they are tight. Then pull the starter, your brushes or solenoid might be toast.
2000 Navigator 4200 Classic
(NOT a trawler)
Tom.B is offline   Reply With Quote
Old 10-26-2016, 07:57 PM   #5
Veteran Member
City: North fort Myers, fl
Vessel Name: Cara Mia
Vessel Model: Mainship 34 Rumrunner
Join Date: Sep 2014
Posts: 32
Thank all of you for the information, it was the solenoid.

Thank You Roger
Cyn143srog is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program

All times are GMT -5. The time now is 07:09 AM.

Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012