fuel mixture ratio for 9.9 Evinrude 1985

Post by **lenb12** » Sat May 02, 2009 2:22 pm

Hi Everyone :

I have a 9.9 HP 1985 Evinrude outboard motor. What is the proper fuel to oil ratio for it ?

Len

Post by **CNs** » Sat May 02, 2009 2:39 pm

Post by **TLunge** » Sat May 02, 2009 2:52 pm

50:1 for virtually all outboards

Post by **RobM** » Sat May 02, 2009 5:06 pm

My 1984 Evenrude 25hp is 100:1.

Doesn't it say on the motor somewhere?

Maybe you can email Evenrude. I am sure they will help you.

Rob

Post by **TLunge** » Sat May 02, 2009 6:07 pm

They did try to go 100:1 for awhile back then, and some engines still have the sticker on them but it did not work out. The engines lifespan got unacceptably low and they had alot of warranty problems so they soon went back to 50:1. They also did a recall on their 100:1 accumix fuel tank.
50:1 is the way to go for everything except maybe some very old antiques or special racing outboards

Post by **RobM** » Sat May 02, 2009 8:52 pm

Yamaha still uses 100:1 mix ratio for all their 2 strokes. I think they have a good track record for reliability.

http://www.yamaha-motor.ca/products/pro ... contentTop

Post by **TLunge** » Sat May 02, 2009 9:35 pm

They may say they do but I've seen otherwise, most yamaha owners run them at 50:1 anyway

Post by **bigpikemike** » Sun May 03, 2009 12:09 am

holy crap man that 100/1 sticker was a srew up from the manufacter.....will run find at 100/1 unless put under a load...mechanics were told to replace the sticker.....50/1 then a little squirt more to be safe...better to thick then to thin...google that and u will see thier srew up

Post by **Raminator** » Sun May 03, 2009 6:20 am

your johnson is 50-1,

Fish-Hawk.Net

fuel mixture ratio for 9.9 Evinrude 1985

fuel mixture ratio for 9.9 Evinrude 1985

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