Ignition System Identification

[skaggst]

Trying to identify the ignition system (typeI, II, III, or IV) for a 1971 mercury 500 50hp. Have wiring diagrams in my service manual, but the engine has a magneto the colors of the engine wiring don't match the diagrams I have....any help is greatly appreciated.

 

[skaggst]

Re: Ignition System Identification



Here are two pictures of the wiring side of the motor.....as you can see the pack rat did a job on the wiring so I need to redo it....trying to figure out the ignition type so I don't get something hooked up wrong.

 

[tazrig]

Re: Ignition System Identification

Do you have the serial number of the motor? Try going here to see an exploded parts diagram. Assuming the parts are original the part numbers should tell you what system you have.

https://webapps.brunswick.com/literature/literatureSearch.do

 

[skaggst]

Re: Ignition System Identification

The serial number is 3091947 the website doesnt find that number....I did figure it out I think based on the photographs and a service manual I have....I believe it is a Type 2 ignition based on the the colors of the switch box. They match the colors listed for the Type 2 ignition ...thanks terry

 

[carholme]

Re: Ignition System Identification

It is a 1971.

50 500 4-cyl 3008819 3235062 1971 USA It is a model 1500101

From here:

Mercury 2-takt, 4-cyl, 40 - 85 hp, produktions?r, modellguide

Parts List for model 1500101

MERC 500 - Mercury, Mercruiser, Force, etc. Parts Lookup



Gerry