Four Stroke Outboard Motors

Outboard motors are the most popular means of propulsion for runabout boats. On small craft such as fishing boats, they are often the only option as there simply isn't enough room to mount an inboard engine. Even on larger pleasure craft, the outboard is popular because it leaves more space to move around inside the boat. Plus, the investment made in the motor can be transferred to a new boat when the time comes to replace the old hull.

In the past, most outboards were two stroke models. Anyone who has used a two stroke outboard motor knows it burns oil, this is an inherent part of the design of two stroke engines. That means the operator has to either mix oil into the fuel at every fillup, or check and top off the oil tank (on more advanced oil injected models). A four stroke engine recirculates the oil through a filter instead of burning it. Not only is this better for the environment, it's also less hassle for the user.

Four stroke outboard motors have mostly replaced the older two strokes, in large part because of the increasingly stringent government-mandated environmental regulations on boat motors and engines in general. Four strokes are cleaner, quieter, and more fuel efficient than their two stroke counterparts, enabling them to meet those strict environmental laws.

The only downsides to four strokes are increased size, weight, and complexity. A two stroke engine, being simpler in design, has fewer moving parts to break and so might be more reliable if well cared for. However, four stroke engines have matured over the years to the point where they are incredibly reliable and so the reliability advantage of two strokes isn't very significant these days.

The one major advantage the two stroke still holds is that it's lighter and smaller than a four stroke of the same rated horsepower. This better power-to-weight ratio makes up for the oil burning and noise for those boaters who want the lightest, most powerful engine available, but again the maturing four stroke designs are closing the performance gap.

Four Stroke Outboard Motors for Sale

2012 300HP 300 HP cr set YAMAHA FOUR STROKE OUTBOARD MOTORS 2012 300HP 300 HP cr set YAMAHA FOUR STROKE OUTBOARD MOTORS US $39,220.00 15d 1h 49m
2004 Triton Center Console with Yahama Four Stroke Outboard Bank Repo 2004 Triton Center Console with Yahama Four Stroke Outboard Bank Repo 0 Bid US $23,000.00 4h 31m
Yamaha VF250LA Four Stroke SHO Outboard Motor Yamaha VF250LA Four Stroke SHO Outboard Motor Paypal US $21,250.00 1d 23h 14m
Yamaha VF200LA Four Stroke SHO Outboard Motor Yamaha VF200LA Four Stroke SHO Outboard Motor Paypal US $19,450.00 1d 23h 12m
Yamaha F350TXR Four Stroke Outboard Motor - FREE 2 year extended warranty - NEW Yamaha F350TXR Four Stroke Outboard Motor - FREE 2 year extended warranty - NEW Paypal US $17,999.00 11d 21h 51m
Pair of 2005 250HP Mercury Verado Four Stroke Outboard Motors Pair of 2005 250HP Mercury Verado Four Stroke Outboard Motors Paypal US $14,499.00 7d 22m
SUZUKI OUTBOARD 2011 DF225TX DF 225 TX 25 INCH SHAFT FOUR STROKE MOTOR SUZUKI OUTBOARD 2011 DF225TX DF 225 TX 25 INCH SHAFT FOUR STROKE MOTOR Paypal 0 Bid US $13,995.00 3d 22h 59m
2010 Yamaha F150TLR Four stroke outboard motor NEW! 2010 Yamaha F150TLR Four stroke outboard motor NEW! Paypal 0 Bid US $12,278.00 3d 18h 22m
SUZUKI OUTBOARD 2011 DF175TX DF 175 TX 25 INCH SHAFT FOUR STROKE MOTOR SUZUKI OUTBOARD 2011 DF175TX DF 175 TX 25 INCH SHAFT FOUR STROKE MOTOR Paypal 0 Bid US $10,925.00 3d 22h 58m
Yamaha F115LA Four Stroke Outboard Motor Yamaha F115LA Four Stroke Outboard Motor Paypal US $10,500.00 1d 23h 58m
SUZUKI OUTBOARD 2011 DF150TX DF 150 TX 25 INCH SHAFT FOUR STROKE MOTOR SUZUKI OUTBOARD 2011 DF150TX DF 150 TX 25 INCH SHAFT FOUR STROKE MOTOR Paypal 0 Bid US $9,995.00 3d 22h 58m
Yamaha F90TLR Four Stroke Outboard Motor Yamaha F90TLR Four Stroke Outboard Motor Paypal US $9,965.00 2d 1h 44m
2011 Yamaha F115TXR Four stroke outboard motor NEW! 2011 Yamaha F115TXR Four stroke outboard motor NEW! Paypal 0 Bid US $9,754.00 3d 18h 22m
2011 Yamaha F115TLR Four stroke outboard motor NEW! 2011 Yamaha F115TLR Four stroke outboard motor NEW! Paypal 0 Bid US $9,694.00 3d 18h 22m
Suzuki  300 HP four stroke outboard motor 25in shaft Warranty 2/27/2014  225 250 Suzuki 300 HP four stroke outboard motor 25in shaft Warranty 2/27/2014 225 250 Paypal 0 Bid US $9,500.00 5d 6h 11m
2011 Yamaha F90TLR Four stroke outboard motor NEW! 2011 Yamaha F90TLR Four stroke outboard motor NEW! Paypal 0 Bid US $8,741.00 3d 18h 22m
Yamaha F70LA Four Stroke Outboard Motor Yamaha F70LA Four Stroke Outboard Motor Paypal US $8,500.00 29d 4h 38m
2005 YAMAHA  150HP FOUR STROKE OUTBOARD MOTOR 2005 YAMAHA 150HP FOUR STROKE OUTBOARD MOTOR Paypal US $7,800.00 10d 21h 56m
2003 HONDA 225HP  FOUR STROKE MOTOR OUTBOARD - TUNED 2003 HONDA 225HP FOUR STROKE MOTOR OUTBOARD - TUNED Paypal US $7,800.00 28d 46m
2011 YAMAHA  90 HP 25 2011 YAMAHA 90 HP 25" 4 FOUR STROKE OUTBOARD MOTOR US $7,500.00 25d 22h 38m
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