100 psi to 140 psi.
Normal compression for a 25 hp 2-stroke Mercury outboard engine typically ranges between 90 to 130 psi per cylinder, depending on the specific model and its condition. It's important to ensure that both cylinders have similar compression readings for optimal performance. If compression is significantly lower in one cylinder compared to the other, it may indicate issues such as worn rings or a blown head gasket. Regular maintenance and checks can help maintain proper compression levels.
The 1989 model, 25 hp Mercury 2 stroke outboard, has a dry weight of 112 lbs.
A 25 HP Mercury 4-stroke engine generally produces less power and is lighter than a 40 HP Mercury 2-stroke engine. The 2-stroke design typically offers more power for its size due to its different combustion process, while 4-stroke engines are usually heavier and more fuel-efficient. Therefore, the 40 HP 2-stroke would have greater power output and potentially a different weight profile compared to the 25 HP 4-stroke.
hi there its 500ml to a 25 liters
.040
size and gap of plugs
Three ounces of Two-Stroke oil per gallon of gas
50 to 1
The 2 stroke, 25 hp Mercury outboard requires a 50:1 ratio, this is roughly one pint of 2 cycle oil, to six gallons of fuel.
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normal unleaded fuel mix depending on manufacturers specs some 25-1 some 30-1
Mercury is a liquid at 25 degrees Celsius.