1994 200 hp Mariner Carburated

[Seascout3]

Hi all,

Thanks for the help in the past but I have another question. Due to many issues my boat sat for about a year and a half. I got back on it and replaced steering and shift/throttle cables. It started right up but it is not running too well. I am sure the gas may be stale and the carbs are problably gummed up. I thought I put gas stabilizer in it but I now have my doubts (CRS disease). I pumped some in a glass jar and it does not look to good but it still smells okay. Anyway my question is how hard is it to just open the carbs and clean the ports and passages without disturbing the settings. I have the Seloc manual and have read it over but if I have to go through the alignment and synching procedure I may goof it up. It has three, two barrel carbs on it. Don't have the model numbers with me at this time. Should I leave this to a pro. Money and time are short. I do most of my own work so the basic removal and disassembly is not a problem, it is the adjustment that concerns me. Thanks for any advice or tips.

Ed

 

[Chris1956]

Re: 1994 200 hp Mariner Carburated

I am not sure you can do what you want, without removing the idle needles. Certainely you can get the fixed (high speed) jets cleaned, and install new gaskets and inlet needles and get the float height set properly. Spray the idle passages best you can and see what happens. Maybe you will get lucky.

 

[Seascout3]

Re: 1994 200 hp Mariner Carburated

Thanks for the reply Chris. I found a three part video on YouTube where a guy rebuilds my exact carbs. It is not that bad. The jet screw had plastic tab on them that only allows a 1/4 turn of adjustment from factory settings. I was not sure how they came off. Now I know. I think as long as I take my time and keep things in order, count number of turns, etc. I should be good to go. Years ago I had an 1989 200 Evinrude. It had 6 plastic carbs on it. You could take them apart, spray them clean and put back together in 30 minutes and ran great.

Ed

 

[Chris1956]

Re: 1994 200 hp Mariner Carburated

Ed, it is not that hard to synch the 6 needles, if it comes to that. I was able to do it, and the motor idles pretty good.

 

[Seascout3]

Re: 1994 200 hp Mariner Carburated

Chris,

I hope I don't have to get too much into the alignment stuff. My manual mentions timing, carb synchronization, oil pump rod and maybe some other things. This engine has always performed great. I just let it sit for way too long. I am hoping the carb clean will bring it back to life. If there is anything to watch out for let me know. While I have your attention, could you explain the carb synchronization? I am worried about running lean and damaging the powerhead. I know it is better to run rich instead of lean. In years past, on working on cars and motorcycles it seemed they ran best right at max lean, which makes it easy to cause damage.

 

[Chris1956]

Re: 1994 200 hp Mariner Carburated

The high speed jets are fixed, so the motor cannot run lean, unless the carbs are dirty. Idle adjustment is simply for idle quality and acceleration quality. There are adjustments to allow you to synch the throttle plates to open at the exact same time. I am not sure about oil pump synch as I run premix.

 

[Seascout3]

Re: 1994 200 hp Mariner Carburated

Thanks again