4.5hp Merc Ignition Parts Needed

peregrine1951 · Jul 31, 2012

I'm looking for parts for my outboard. They include 336-4518A2 points, 336-7516A2 Module, 336-4470A1 high speed coil, 336-4463 condenser. If anyone knows where I can obtain these, please send me an email or I can call you if you can leave your number. Will pay cash and shipping expense.

ncpi · Jul 31, 2012

Re: 4.5hp Merc Ignition Parts Needed

I have one of these too. Trying to get it running as well. Keep us posted on what you find wrong. These parts are not cheap...

Here's what I found
Module 336-4516 (repair and return $140) and High Speed Coil ($34)
http://www.maxrules.com/fixmercelectric.html#R3364516

Points ($58.95), but looks like you can also get a Sierra 18-5139 on Amazon or eBay (thanks to a poster to my forum questions)
http://store.oldmercs.com/category_s/1985.htm

Condenser 336-4463 ($85.00)
http://www.marineengine.com/parts/m...5066&component=STATOR+AND+IGNITION+COMPONENTS

peregrine1951 · Aug 1, 2012

Re: 4.5hp Merc Ignition Parts Needed

Makes you wonder what the motor is worth. By the time it's all said and done, repairing will be about $500.

oldman570 · Aug 1, 2012

Re: 4.5hp Merc Ignition Parts Needed

Parts for that motor are still around at some dealers. Oldmercs.com and Seawaymarine.com can probly set you up with most of the parts. Ebay may have some listed also. Rehabing the older motors is rather $$$ and a compression check should be done first to see if the unit is worth the expense. Do not forget the water pump and carb when doing a rehab. IMO
Oldman570

Mi duckdown · Aug 1, 2012

Re: 4.5hp Merc Ignition Parts Needed

^ Yes compression check first. Don't throw money away changing parts.

slate1234 · Oct 4, 2012

Re: 4.5hp Merc Ignition Parts Needed

I also have one of those outboards I had to replace all the wireing on it because it was all corroded once replaced and points set away it went and I am not the best with engines being a builder

Maxz695 · Oct 4, 2012

Re: 4.5hp Merc Ignition Parts Needed

336-4470A1 high speed coil http://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l2736&_nkw=336-4470A1 336-4463 condenser http://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l2736&_nkw=336-4463+condenser

Laddies · Oct 4, 2012

Re: 4.5hp Merc Ignition Parts Needed

Seldom do 3 items go bad on engines at once, never replaced a condenser or a module ever, have had many insulator blocks short out. Have you tested the system or are you just throwing parts at it?

peregrine1951 · Oct 5, 2012

Re: 4.5hp Merc Ignition Parts Needed

Laddies said:
Seldom do 3 items go bad on engines at once, never replaced a condenser or a module ever, have had many insulator blocks short out. Have you tested the system or are you just throwing parts at it?

You're right. it doesn't make cense. I just have a bad miss and a boat mechanic told me to get all 4 items. I'm not a mechanic but with instructions could probably do it. I don't think it's the module tho. What would you do? I have all winter to figure it out. Just don't want to waste $. Mike oh, and thanks!!!!

Laddies · Oct 5, 2012

Re: 4.5hp Merc Ignition Parts Needed

Start with the insulator block on the point lead that fixes 90% of them. The points are high voltage and burn almost as some as the engine fires, if they are burned so bad you don't feel they can be gaped properly clean them with a file watch the alignment and polish them while they are out to change the insulator block. Here's the test for the module it's the same as a 2 cyl so this will work. Any decent shop with a condenser tester can test the capacitor for you.

slate1234 · Oct 5, 2012

Re: 4.5hp Merc Ignition Parts Needed

first check the wires from the coil back to the stater and the points if you have to change them theres only three also check your kill switch I have just replaced one on a 7.5 mercury that would work when it wanted that could also cause you problems

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