50:1
See page 2 of owners manual and parts list for Sears 3hp model 217-58540 under "B. Specifications": "Fuel Mixture..... 1/2 pint No. 30 outboard motor oil to one gallon of regular gasoline. CAUTION: Do not use multi-viscosity (10W30) oil. (16 to 1 ratio)"
This is a sears ted Williams 5.5 hp outboard motor manufactured by Eska in 1972. It has a Tecumseh motor and is air cooled. You can find more info online
24:1 TCW3 2-cycle outboard oil - Rj12yc or equiv. plug
motor is a 1970 model, built by Eska for Sears. Eska is now out of business, however the powerhead part &motor itself was built by Tecumseh & still very much in business. The mix for this motor is 24:1 using normal 2 cycle motor oil (as for chainsaws/lawnmowers - not normal marine oil..."
my manual says, sae 90 outboard motor grease, hope i helped
24:1 ratio
1972 eska 4.5hp, air cooled 2 stroke
1972 eska 4.5hp, air cooled 2 stroke
straight fuel/4 stroke
They were built from 1968 to 1981 I beleive, I have the same model number and it is a 1970
www.searspartsdirect.com Put your model number in, there are still many available parts..
1972