1962 40 HP Seahorse

[moganman]

I have a 62' 40 HP Seahorse that I purchased with a 15' MFG. The engine runs good with the exception that you have to hold the throttle a little past start to keep it idling and the ajustment screw (plastic) is all the way down. I want to service and maintenance this motor myself. I have done a lot of reading of past posts and greatly appreciate this board. I have also purchased a manual (Clymer not very good hope to get a Seloc soon). I purchased a compression tester today and checked the compression and it was 110 psi exactly in both #1 and #2 (I was elated!) I changed and gapped the plugs and changed the gearcase lube (looked good). I also bought a tune up kit and a carb kit but Clymer manual seems greek to me, hopefully easier than it looks. Is Seloc that much better? I am an A/C tech so I will learn. The only thing I know about this motor is that nothing has been done to it for 2 years and before that belonged to a man in Pa. in his 70's. What next? I plan on decarbing soon, do I do that before or after rebuilding the carb? I just want to know when I put my boat (restored completely) on the water I can have some confidence as much as possible. Any and all advice would be greatly appreciated. Thanks!

 

[DJ]

Re: 1962 40 HP Seahorse

moganhunter,<br /><br />I think the next component that needs attention is the carburetor. Your idle circuit may be plugged up.<br /><br />The carb. rebuild on these is relatively simple. Just take your time and do your best to remeber how things go back together. <br /><br />Try to avoid changing any adjustments around the carb. (timing, throttle stops, etc.) until you get the carb. rebuilt.

 

[Chinewalker]

Re: 1962 40 HP Seahorse

Hi Moganhunter,<br /> You didn't say whether it actually idled well at that throttle position or not. If it does, then leave it be. On a 40+ year old motor, it's possible there's enough slop in the linkage that "Start" is no longer where it was originally. ..<br />- Scott