I recently purchased a Force Model 92F9A 9.9hp Outboard Motor,

and I do not know the proper Oil / Gas Mixing ratio.

The name plate reads:
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US Marine Power, Hartford, Wi

Model Number: 92F9A

Serial Number: 1097
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1989 Force 9.9hp outboard motor revision "A",

Can somebody please help me out?

Thanks in advance for your time,

Mark