6hp evinrude

hrh · #1 07-19-2010

I need to confirm the year my o/b was built.Previous posts have stated that 6904 was manufactured in 1969.The information I researched (marineengine.com) states this motor is a 1979 model. Any info about this and the fuel mixture (50-1??) would be appreciated.

Gene T · #2 07-19-2010

1979 from a Evinrude-Johnson-gale-ID-Chart.pdf I came have on file. And I would guess 50:1 but can't confirm it.

Gene

RichH · #3 07-19-2010

Start here to MATCH up your Model number with the correct year: http://shop2.evinrude.com/Index.aspx..._id=0&siteid=1

hrh · #4 07-20-2010

Thanks for your help.

dabnis · #5 07-20-2010

HRH,

I had a 1970 6hp Evinrude, used 50:1, ran it for hours at a time
wide open, no problems.

Dabnis

US27inKS · #6 07-20-2010

I have an evinrude 6hp on my boat. I had a lot of trouble with fouling the plugs near the end of the year several years in a row. I fixed it by using Amsoil 2 cycle oil. It now starts easier and doesn't smoke. Amsoil mixes at 100:1 (kinda scary) but I have run my engine wide open for 2 hours with no signs of trouble. Give it a try. I'm a lot happier with my engine now.

RichH · #7 07-20-2010

'Most' Evinrude OBs from this timeframe used 50:1 mixture.

tommays · #8 07-20-2010

The 100:1 was fail and not used to many years in pre-mix motors, while it was OK when running it did not leave enough oil film during down time to protect the motor parts

dabnis · #9 07-20-2010

Quote:

Originally Posted by US27inKS

I have an evinrude 6hp on my boat. I had a lot of trouble with fouling the plugs near the end of the year several years in a row. I fixed it by using Amsoil 2 cycle oil. It now starts easier and doesn't smoke. Amsoil mixes at 100:1 (kinda scary) but I have run my engine wide open for 2 hours with no signs of trouble. Give it a try. I'm a lot happier with my engine now.

Agree with US27, switched to Red Line synthetic 2 stroke oil several
years ago. As Red Line said "follow engine manufacturers specs for
mixing ratios", I stayed with 50:1. Even after trolling for hours on end,
no fouled plugs and far less smoke. I have also used Berrymans B-12
fuel additive for years. Don't know if it is entirely necessary but have not
had any fuel related problems while using it. No affiliation with Red Line
or Berrymans.

dabnis