Yamaha’s High Thrust four strokes, are built for jobs that call for more muscle—like pushing a heavy pontoon, adding extra kick to a multi-species boat or maneuvering a sailboat through a crowded marina. Available in 60, 50, an all-new 25 and a 9.9 horsepower, their larger lower units and higher gear ratios produce substantially more thrust than conventional outboards of the same horsepower using standard propellers. In fact, when paired with our Dual Thrust™ propellers, (optional on T60/T50 and standard on our T25 and T9.9) Yamaha High Thrusts produce up to 60 percent more forward thrust and up to 70 percent more thrust in reverse.
 
Engine Type
Inline 4
Displacement
1.0L
Bore x Stroke
65 x 75mm (2.56 x 2.95 in.)
Prop Shaft Horsepower
50hp @ 5500rpm
Full Throttle RPM Range
5000 ~ 6000 rpm
Alternator Output at W.O.T.
16 Amp
Compression Ratio
9.5:1
Fuel Induction System
EFI
Weight †
117kg (262 lbs)
Recommended Fuel
Octane 87
Recommended Engine Oil
Yamalube® 4M (See owner's manual)
Recommended Fuel Filtration
Yamaha 10-Micron Fuel/Water Separating Filter (external)
C.A.R.B. Rating
3-Star
Exhaust
Through Propeller
Intake
8
Ignition
TCI Microcomputer
Spark Plug
DPR6EB-9
Alternator Output
16 Amp
Starting System
Electric
Lubrication
Wet Sump
Engine Oil Capacity
2.1L/1.9L
Recommended Cooling
Thermostatic Control
Ethanol Blend Limit
10% Maximum
Gear Ratio
2.33:1
Gear Shift
Forward, Neutral, Reverse
Shaft Length
20"
Degree of Tilt
69°
Degree of Trim
-4° through +16°
Dry Weight
117kg (262 lbs)
Mounting Centers
N/A
Steering Angle (maximum)
40° from center, either direction
Warranty
Limited 3 Year Limited Pleasure Boat - 1 Year Limited Commercial