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Reseal Lower Unit Help (Prop Shaft Seals)

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ctmsnow32

New member
Hey,

I have a 2000 Evinrude 70HP 4 Stroke. I notice some water in the oil when I drained it so I am looking to reseal the lower unit. MY specific question comes at the prop shaft seals.

Does anyone know the correct direction these are supposed to be placed? I've seen a number of videos online that show basically every combination.

I believe they should be 'back to back'... first one with the spring facing away from the prop and the second with the spring facing the prop. If anyone has the accurate placement for these it would be much appreciated.


Pete
 
ctmsnow32 said:
Hey, I have a 2000 Evinrude 70HP 4 Stroke. I notice some water in the oil when I drained it so I am looking to reseal the lower unit. MY specific question comes at the prop shaft seals. Does anyone know the correct direction these are supposed to be placed? I've seen a number of videos online that show basically every combination. I believe they should be 'back to back'... first one with the spring facing away from the prop and the second with the spring facing the prop. If anyone has the accurate placement for these it would be much appreciated. Pete
Click to expand...

You are correct. The first one installed keeps the oil in... the second one installed (closest to prop) keeps the water out.
 
joereeves said:
You are correct. The first one installed keeps the oil in... the second one installed (closest to prop) keeps the water out.
Click to expand...


Perfect thanks... One more followup. Is there anything I should or should not put on the outside of the seals to help them slide into place?
 
They slide quite well using pure pressure... However, I always gave the metal rims a slight coating of OMC Adhesive as an extra sealing additive (peace of mind) which just happens to be something to slide on also. Possibly available here... or at your local dealership. Really sticky stuff!

OMC Adhesive is now Bombardier 3M Product #847 and may be listed as Scotchgrip 847, part number 776964
 
OMC service manuals say OMC Gasket Sealant 317201 on all pressed-in seals. But it really isn't all that critical.
 
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