- Oct 29, 2005
I would like to fit an additional starting relay as I'm tired of the "hit or miss" starting issue with my Yanmar 2GM20F. Could anyone share their setup wiring diagram with me? Much appreciated.
Download it here. The app is searchable in the Google Play Store under Sailboat Owners.
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+1Please follow MS's advice, or the advice of others to run heavier wiring to bypass the harness.
I see an average of between 8A and 18A on most starter solenoids for sailboat AUX engines. We have a 1kW starter on the re-build bench right now that pulls 17.4A at 12.1V. Unlike the starter motor itself, the solenoid does not really have any in-rush to speak of.I think the amount of current required on the solenoid is vastly in appreciated on many small motors. We think it’s only a solenoid so a few amps at most. The report sheet on my Bosch starter for the M25 reported that it took 31amps to push the bending into place and 10 amps to hold it there. That a lot of current if even for a short duration. Upping the wire gauge will help, but the switches are typically rated at 7 amps with the better ones at 20 Amps. The response from the starter was 100% better after installing a simple 60/40 relay. Plus I’m not sending all that current down and back 30’.
No it’s not “normal” . You will need to be a bit of a contortionist but try this first, remove and clean the terminals on the starter solenoid. Hard to get at but I have confidence that you can do it. Next there is a little cheap in line fuse in the wire going to the solenoid. Cut the wire and throw it away, replace it with a ATO/ATC waterproof fuse holder and fuse that has a sealed cover, use good butt terminals with good quality crumpets and adhesive lined heat shrink tubing to connect the new fuse. See if that does the trick. https://shop.sailboatowners.com/prod.php?352Our O'day 34 purchased last year will sometimes "click" when using key several times