Power & Performance
A Single Overhead Camshaft (SOHC) on the F70, F60 and F50 provides a compact, lightweight, space-saving design.
Precision Multi-Point Electronic Fuel Injection delivers the exact amount of fuel needed for optimum performance and efficiency. Yamaha’s EFI optimizes fuel atomization further enhancing fuel economy.
A Composite Intake Manifold features long tube intake tracks, tuned to increase airflow, which boost low-end and midrange torque. This means a more powerful hole shot and increased acceleration. Even with all this responsive power, an air silencer box and surge tank reduce air intake noise and air turbulence for smooth, quiet operation.
A TCI microcomputer ignition adjusts timing to maintain optimal engine performance, economy and power under all operating conditions.
All air entering the engine block is routed through a single throttle valve, to ensure the precise amount of air necessary for optimum power and fuel efficiency. It then enters each cylinder through individual long intake tracks, which are ‘pulse tuned’ to provide air at the precise volume and timing for maximum density and power.
Specs & Compare
| Engine Type | i4 |
| Displacement | 1.0L |
| Bore x Stroke | 65 x 75mm (2.56 x 2.95 in.) |
| Prop Shaft Horsepower | 50hp at 5500 rpm |
| Full Throttle RPM Range | 5000 ~ 6000 rpm |
| Alternator Output at W.O.T. | 16 amp |
| Compression Ratio | 9.5:1 |
| Fuel Induction System | EFI |
| Displacement | 996 cc |
| Max Output | 36.8 KW |
| Recommended Engine Oil | Yamalube® |
| Recommended Fuel Filtration | 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 Amps |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 2.1/1.9L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 1.85:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 20″ |
| Degree of Tilt | 69° |
| Degree of Trim | -4° through +16° |
| Dry Weight | 118 kg |
| Mounting Centers | N/A |
| Steering Angle (maximum) | 40° from center, either direction |
| Warranty | Limited 3-year Pleasure, 1-Year Commercial |
| Engine Type | i4 |
| Displacement | 1.0L |
| Bore x Stroke | 65 x 75mm (2.56 x 2.95 in.) |
| Prop Shaft Horsepower | 60hp at 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 |
| Displacement | 996 cc |
| Max output | 44.1 |
| Recommended Engine Oil | Yamalube® |
| Recommended Fuel Filtration | 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 Amps |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 2.1/1.9L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 1.85:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 20″ |
| Degree of Tilt | 69° |
| Degree of Trim | -4° through +16° |
| Dry Weight | 116 kg |
| Mounting Centers | N/A |
| Steering Angle (maximum) | 40° from center, either direction |
| Warranty | Limited 3-year Pleasure, 1-Year Commercial |
| Engine Type | i4 16V SOHC |
| Displacement | 1.0L |
| Bore x Stroke | 65 x 75mm (2.56 x 2.95 in.) |
| Prop Shaft Horsepower | 70hp at 5800 rpm |
| Full Throttle RPM Range | 5300 ~ 6300 rpm |
| Alternator Output at W.O.T. | 17 Amp |
| Compression Ratio | 9.4:1 |
| Fuel Induction System | EFI |
| Max Output | 51.5 KW |
| Displacement | 996 cc |
| Recommended Engine Oil | Yamalube® |
| Recommended Fuel Filtration | Water Separating Filter (external) |
| C.A.R.B. Rating | 3-Star |
| Exhaust | Through Propeller |
| Intake | 16 |
| Ignition | TCI Microcomputer |
| Spark Plug | LKR7E |
| Alternator Output | 17 Amp |
| Starting System | Electric |
| Lubrication | Wet Sump |
| Engine Oil Capacity | 2.1/1.9L |
| Recommended Cooling | Thermostatic Control |
| Ethanol Blend Limit | 10% Maximum |
| Gear Ratio | 2.33:1 |
| Gear Shift | Forward, Neutral, Reverse |
| Shaft Length | 20″ and 25″ |
| Degree of Tilt | 65° |
| Degree of Trim | -4° through +16° |
| Dry Weight | 119 kg – 123 kg |
| Mounting Centers | N/A |
| Steering Angle (maximum) | 40° from center, either direction |
| Warranty | Limited 3-year Pleasure, 3-year Government, 1-Year Commercial |
† Weight refers to shortest shaft length, and is measured without motor oil, gearcase oil and propeller (except models 25 hp and under, which include a standard propeller). All Jet model weights include the jet pump assembly (weight estimated).