1972 25hp johnson electric start

[parratt1]

I have a 1972 25hp johnson that I am going through right now. Model number is 25r72r. I thought I read somewhere that the r in the model number denoted rope start but mine is electric start. Is it possible that it was built as a rope start but later converted to electric? I ask because the very small wires on both the start and stop buttons are both brittle and need to be replaced so I figured on just replacing both buttons but I am having trouble finding them.

 

[F_R]

You are correct, it left the factory as a rope start, and has had the electric added at some time.

EDIT: Stop button is part number 379638, start button is part number 583925. You probably don't want them though, at 59 bucks apiece. Just substitute a generic marine switch. Actually, I guess I shouldn't say that. They are supposed to be sealed so a spark doesn't start a fire. Be careful what you select.

 

[boobie]

Go to a NAPA parts dealer and they may be able to help you out.

 

[F_R]

OR...plenty to choose from right here at iboats
http://www.iboats.com/Marine-Push-Buttons/dm/cart_id.990635370--session_id.061288944--view_id.216624

 

[parratt1]

http://www.iboats.com/Seadog-Universal-Kill-Switch/dm/view_id.39677

Is this an acceptable part? Seems like it would be a heck of a lot cheaper!

 

[parratt1]

OR...plenty to choose from right here at iboats
http://www.iboats.com/Marine-Push-Buttons/dm/*******.990635370--**********.061288944--view_id.216624

Awesome! Appreciate it much! I like those options much much better

 

[boobie]

Besides that you're supporting this forum. I wasn't aware of them.

 

[parratt1]

So looks like there are a lot of options on switches. Electrical ratings are not my strong suit. What rating would I be looking for to be safe? I see a couple at 30amps/12volts. I tried looking up the ratings on the original switches and cannot find anything. I need to replace both the start and stop switches due to corroded wiring. Thank you so much for the help by the way!

 

[F_R]

You can't have too much amps rating, only too little. One that is too little, or marginal will have shorter life than the greater ones. But 30 amps would be way, way, overkill. No need for such a heavy duty one. I really don't know how many amps your solenoids draw, but probably only 2 or 3. Then there is the matter of inductive load. Not meaning to get into Electronics 101 here, but I'd pick one around 10 amps for durability and reliability. Just my 2c.

 

[parratt1]

You can't have too much amps rating, only too little. One that is too little, or marginal will have shorter life than the greater ones. But 30 amps would be way, way, overkill. No need for such a heavy duty one. I really don't know how many amps your solenoids draw, but probably only 2 or 3. Then there is the matter of inductive load. Not meaning to get into Electronics 101 here, but I'd pick one around 10 amps for durability and reliability. Just my 2c.

Great. Thank you again for all of the help. I feel a lot more confident about tackling this project now!