The fuel consumption of a 1999 135 hp Mercury outboard typically ranges from 10 to 15 gallons per hour at wide-open throttle, depending on various factors such as load, operating conditions, and maintenance. At cruising speeds, the consumption may drop to about 6 to 10 gallons per hour. It's essential to refer to the owner's manual or consult with a professional for more precise figures based on specific usage conditions.
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I have a 1999 Mercury 2stroke 5HP outboard and the owners manual states 50:1 Gas/Oil mixture.
A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.
The fuel consumption of a Mercury 200hp outboard engine typically ranges from about 10 to 16 gallons per hour, depending on factors such as load, speed, and operating conditions. At cruising speeds, many users report an average consumption of around 12 gallons per hour. It's important to consult the manufacturer's specifications and conduct real-world tests for more precise figures based on specific usage scenarios.
The 7.5 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
A 50hp Mercury outboard, requires a 50:1 fuel to 2 cycle oil ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
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