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1989 Evinrude 88 SPL (E88MSLCER) Power Head Check Valves

drobertsobx

drobertsobx

Member
Hi,
While inspecting the powerhead, I noticed that one of the check valves (392988 ) was bent.
I removed all 4 and while inspecting them 2 of the check valves were non-functional
(couldn't blow air through them) and the filter screens could not be cleaned(black color hardened).
I have ordered replacements. The other 2 cleaned up just fine and could get air in one direction no problem.

My question is :
could the 2 non working valves have caused any damage?

Thanks in advance Don
 

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drobertsobx said:
Also does anybody have a chart or diagram for the routing of the lines? I cannot find anything about them in the Seloc Book.
Click to expand...
OK I found the diagram under fuel system, however it looks nothing like what I have...

It shows the system plumbed with individual hoses on each cylinder bypass cover.

I only have hose nipples from cylinders 1 and 2 on the bypass covers.
Both intakes have 2 check valves

I have 3 hoses 2 are @18" and one is about 15" with a Tee to 2 short hoses

Using witness bends I was able to match one of the long ones to cylinder 2 bypass cover (picture 1)
 

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The factory manual shows these details,------the 2 hoses that have the T go to nipple for main bearing near center of the block.----Starboard side.----Often times the SELOC manuals are missing important details and are best used in the little house with the moon in the door.
 
racerone said:
The factory manual shows these details,------the 2 hoses that have the T go to nipple for main bearing near center of the block.----Starboard side.----Often times the SELOC manuals are missing important details and are best used in the little house with the moon in the door.
Click to expand...
Thanks for the info, I just purchased the original service manual from Ken cooks site. The seloc has been utterly useless for everything I have tried to do thus far.
 
Lesson learned about putting fuel lines into a sealed plastic bag... I honestly thought they were vacuum lines...
The line should have been marked B/W (line color)[ One Dot)] according to my motor... the Starboard bypass 1 line the other bypass (only surviving mark) 3 lines.
 

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racerone said:
The factory manual shows these details,------the 2 hoses that have the T go to nipple for main bearing near center of the block.----Starboard side.----Often times the SELOC manuals are missing important details and are best used in the little house with the moon in the door.
Click to expand...
I'm debating whether to go ahead and order 2 more check valves and replace all 4. It seems they are responsible for 2 very important things in lubrication to bearings and keeping excess fuel building up... Am I over thinking things?
 
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