generally speaking if it has valves its a 4 stroke 4 cycle engine......if it doesnt have valves then it is a two stroke 2 cycle...................
This is a 2 cycle engine.
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.
The 1996 model, 9.9 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil to six gallons of fuel.
Need to know if its 2 or 4 cycle.
The non oil injected, 2 stroke model, 70 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
For a Mercury 4-stroke 50 hp outboard, a recommended battery size is typically a Group 24 or Group 27 deep-cycle or starting battery. These batteries usually have a capacity of around 70-100 amp-hours, providing sufficient power for starting and operating the engine. It's important to ensure that the battery voltage matches the outboard's requirements, which is generally 12 volts. Always consult the owner's manual or a dealer for specific recommendations tailored to your engine model.
A 35 hp Mercury 2 stroke, requires a 50:1 ratio, one pint of 2 cycle oil to six gallons of fuel.
Mercury has made the 50 in both 2 cycle and 4 cycle. If it is oil injected and there is no oil that you change and no oil filter it is a 2 cycle engine where the oil is mixed with the gasoline.
The 4 stroke Honda outboard is a 4 cycle engine using crankcase oil for lubrication, no fuel / oil mix is required.
The 1978 model, 115 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
'a 4 stroke engine cycle' is usually what it is called...
If we are talking about a 2 stroke engine, a TCW-3 rated, 2 cycle oil is required. For a 4 stroke outboard, 10-40 wt. oil is usually recommended.