Merc 225 EFI

[rodman55]

Had the 4 beep oil tank alarm. Check tank and float is reading correct, Followed oil line to starboard side and found a bad oil pressure check valve. Valve has failed can blow thru both sides low pressure. After looking at system this valve sends crankcase pressure to keep the small oil tank on engine full. I have a shop teardown book, but no part # for the check valve Motor is a
Merc 225l efi SN OT674533 anyone know the correct part # for a replacement check valve? Thanks for any help.

 

[VolsFan24]

You may have already done so, but i would post this on the BBC Mercury motor forums. The moderator there usually answers pretty quick and is very knowledgeable.

 

[catch 1]

I have a 2001 225 efi SN- OT467?? The check valve part number is 21-8781051. I have had to replace 3 times.

 

[rodman55]

That's it. Thank you for the help.