convert manual start to electric start

t00lman30

Recruit
Joined
Apr 2, 2006
Messages
1
I have a 1976 mercury 200 20 hp serial# 4354810. Is it possible to convert this to electric start. If so is there a website to get the parts? Thanks for the help
 

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: convert manual start to electric start

Yes, it's possible if you have the parts, the problem is the parts are as rare as hens teeth :confused: :D
 

Motor Boater Bill

Chief Petty Officer
Joined
Jan 29, 2005
Messages
488
Re: convert manual start to electric start

I did this conversion with my 76 Merc 200, serial number 4353027. I found the parts on eBay. The rare thing is the starter. There is both the original (50-47216) which has a field winding and the later version (50-97949) which has permanent field magnets. The later one draws less current, so I have a slight preference for it. I have seen at least a half dozen of these on eBay in the last 18 months, but they are definitely not common. You have to be dedicated to this project and prepared to bid to win. I have seen them go for anywhere from $25 (I bought that one, it was listed as a "stator" instead of a "starter"!) to $175. If it is worth it to you, it can be done, and if you aren't in too big of a hurry you can find one at a decent price--$75 to $100. The starter is the only rare item, the rest of what you need is pretty easy to find, with the exception of the internal wiring harness, but you can work around that also. It isn't rocket science once you find the starter. Here's a tip--if you can wait, you'll find cheaper parts in the winter than in the spring!<br /><br />Parts list:<br /> http://www.mercruiserparts.com/Show...g&inbr=464&bnbr=180&bdesc=ELECTRIC+COMPONENTS <br /><br />A used starter is an unknown quantity, so communicate wih the seller before hand. Apparently you can get a new end cap for the later model starter, which includes brushes. I know this because I bought one on eBay from a guy who had just replaced the end cap, but I don't know the part number for that. I think it might be the same as the end cap that fits on a later model 20 HP starter, which has led me to wonder what other parts might interchange (armature, housing with field magnets, bendix?). One obvious differenct between the starter for your motor (and all the previous electric start Merc 200's) versus the later Merc 200's is the top housing where it bolts onto the motor. This mounting changed shortly after 1976, the newer ones have "ears" on the side where they mount. As I said, I'm not sure about interchange of other components of the starter, but I'd like to know. <br /><br />Some will say, with reasonable justification, that if you want electric start get a different motor. You make the call.<br /><br />I smile every time I push that button and the motor fires up. I have problems with a shoulder injury, so for me this was worth doing, and I like to tinker with my motor anyway.
 

Motor Boater Bill

Chief Petty Officer
Joined
Jan 29, 2005
Messages
488
Re: convert manual start to electric start

One other thing I forgot to mention--your motor won't accept a charging stator, so you just charge the battery before you go. The charging stator only fits the later motors. So, you don't need the rectifier either. Simplifies things a bit, although that charging circuit would come in handy on a week-long fishing trip!
 

milesm

Recruit
Joined
Jul 16, 2019
Messages
5
Re: convert manual start to electric start

One other thing I forgot to mention--your motor won't accept a charging stator, so you just charge the battery before you go. The charging stator only fits the later motors. So, you don't need the rectifier either. Simplifies things a bit, although that charging circuit would come in handy on a week-long fishing trip!
Hello Motor Boater Bill,

I am working on this same project and am stuck at this point. How did you figure out that the motor won't accept the stator? I got the flywheel with the huge magnet inside, got the right stator but my mechanic says it just doesnt' work and he can't find any reference to it. The flyweel is missing the center bushing to fit onto the drive shaft. The trigger won't line up to the the charging stator nor will be bolt holes. Yet the parts manual mentioned the "electric flywheel" and the charging stator..... what I am missing?

Miles
 
Top