Sorry for asking this question in the Motoring Section, a friend of mine has purchased a 9.9 HP Johnson Outboard.What would be the correct mixture!Would it be 50 to 1 or 100 to 1.The engine is old.It is a 1991.Appreciate any help.
johnf_456,
Nov 23, 8:56pm
Most likely 50:1
bellky,
Nov 23, 8:57pm
Google says:
"Everything after '64 is 50:1, TCW-3 oil." And:
"I had a 9.9hp Johnson (white housing)about that vinage and used 50-1. Seems like the manual said 100-1 for slow trolling, but to increase for higher RPM. I used 50-1 all the time and did not have any problems."
the_chooky,
Nov 23, 8:57pm
If in doubt,start with 50.
pugmyre,
Nov 23, 9:18pm
Thank you people.We appreciate your help.Many thanks.
pugmyre,
Nov 23, 9:20pm
Bey Bellky.Sounds like it's the same sort of engine.Will do what you say.
therafter1,
Nov 23, 9:23pm
Here is your mix ratio??
bellky,
Nov 23, 9:33pm
Ok cool. That second quote when they said 'about that vintage' was referring to 1990.
The Google search I used was '9.9 HP Johnson Outboard ratio' on Web and Pages from New Zealand.
two parts oil two one petrol and one Banana Muffin.
icemans1,
Nov 27, 2:28am
make sure you add the oil yourself - NEVER TRUST PEOPLE IN A GAS STATION TO DO IT
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