Old Evinrude questions

J

jhogue46140

Seaman
Joined
Jun 8, 2008
Messages
73
My nephew bought a small aluminum boat. It has an old evinrude outboard on it. Motor appears in good shape. The original owner told him it ran. It is a 1959 9 or 9.9 hp outboard. Serial number is 10024-01087. Can anyone tell me the fuel to oil ratio for this motor? Also what is the horsepower and if possible model number? Also what type spark plugs does this take. He has asked me to help him get it started and tuned up. I have a bass boat with a 150 merc so I am a little familiar with outboards. Anything special I need to know about old evinrudes? Thanks James
 
S

sr1967

Cadet
Joined
Oct 20, 2004
Messages
25
Re: Old Evinrude questions

if it is a 10hp from 1956 to 1973 evinrude sportwin .the AC delco-sparkplug is M42K or M44C..use the M44C when is cold
CHAMPION is- J4C
NGK is- B8S
AUTOLITE is 353
the gap for all 4 brands is .030
 
lindy46

lindy46

Captain
Joined
Nov 27, 2008
Messages
3,886
Re: Old Evinrude questions

Use 24:1 gas:eek:il ratio and use TCW-3 oil for best results.
 
J

jhogue46140

Seaman
Joined
Jun 8, 2008
Messages
73
Re: Old Evinrude questions

Changed spark plugs, lower unit lube and ran gas/seafoam mixture through. She started right up and ran well. We did notice a spring is missing on the choke. Thanks for everyone's help.
 
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