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1987 ESHT yamaha 25 hp 2 stroke

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  • 1987 ESHT yamaha 25 hp 2 stroke

    just purchased outboard, runs well and starts easy. Compression is 120 (ran engine on rabbit ears for a minute before test) in both cylinders. What is the compression suppose to be in the 87 models? Should I trust the oil injection system in this older engine or disconnect and mix oil in gas? What is the correct oil ratio?
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