sears tedwilliams 71/2

[Eddie Hutto]

I just got this motor on ebay the model # is 57459520 does any one know what year it is and what gas and oil mix to used.

 

[Evinrude15]

Re: sears tedwilliams 71/2

Probably a 32:1 gas mix. My grandfather uses a 50:1 mix on his 63 rude and it runs fine.

 

[steelespike]

Re: sears tedwilliams 71/2

I just got this motor on ebay the model # is 57459520 does any one know what year it is and what gas and oil mix to used.

Your motor was built by McCulloch long out of business.A few routine parts my be available here at Iboats.Also you could try the Scott guy on the net.
Motor is a 67 fuel mix is 40:1.Use TCW3 rated oil.

 

[steelespike]

Re: sears tedwilliams 71/2

Probably a 32:1 gas mix. My grandfather uses a 50:1 mix on his 63 rude and it runs fine.

What 63 Rude is your Grandfather running?Some would take it very unkindly
running at 50:1.

 

[jay_merrill]

Re: sears tedwilliams 71/2

I have been running a pair of '58 Evinrude Bigtwins (35hp) for years on 50:1 mix at the advice of my OMC dealer. There is a great deal of difference between the oils of yesteryear and the synthetics being used today, so the old standards don't neccessarily apply.

 

[steelespike]

Re: sears tedwilliams 71/2

The 35 appears to be fully "jeweled"Some of the smaller motors may not be.
Some of the older motors don't have thermostats this could figure in the wear factors as well.