F20SMHB Yamaha 4 Stroke 20hp Short Shaft, Manual Start, Mechanical Trim & Tilt System, Battery-Less Electronic Fuel Injection, Tiller Handle Portable
Engine Type:
Two-cylinder, In-line
Bore x Stroke:
65 x 65.1 mm
Displacement:
432 cc
Rec. MAX RPM:
5000 – 6000
Starter Method:
Manual
Gear Ratio:
2.08:1
Weight:
F20SMHB : 57 kg
The new F20 is built around the award winning F25, an Innovation Award-winning outboard that immediately set the industry standard. Modified ECU mapping and a redesigned camshaft allows the new F20 to harness the huge potential of this outboard and to optimize its performance.
The result is an exceptionally strong outboard with the versatility to power a wide variety of boats.
The new F20 delivers fast acceleration and enhanced boat performance under load, so when it’s time to hit the water, you won’t have to leave anything (or anyone) behind. The variable trolling rpm switch makes the F20 the perfect fishing companion, while the easy to use fresh water flush attachment makes the engine a breeze to clean at the end of the day. Built-in ergonomic carry handles and two-position resting pads make it easy to remove and store the F20.
Customers can choose manual start configuration, using Yamaha’s battery-less EFI technology, to power their boat with minimum rigging
requirements.
Yamaha offers a range of electric-start configurations, all with the added peace of mind of factory installed manual pull start.
Available in:
- F20SMHB - Manual Start, Tiller Handle, Transom height - Standard - 57 kg
- F20LMHB - Manual Start, Tiller Handle, Transom height - Long - 59 kg
- F20SWPB - Electric Start, Multi-Functional Tiller Handle or Power Tilt System(Forward Control), Transom height - Standard - 62 kg
- F20LWPB - Electric Start, Multi-Functional Tiller Handle or Power Tilt System(Forward Control), Transom height - Long - 64 kg
General Features:
POWER/PERFORMANCE
- Enhanced Acceleration and Performance Under Load
- Single Overhead Camshaft
- Battery-less Electronic Fuel Injection
- Wide-Span Mounting System
RELIABILITY/DURABILITY
- CDI Microcomputer
- Wet Sump Lubrication
- Engine Warning System
- Mechanical Single Throttle Valve Intake System
- SST Drive, Prop, Shift Shafts
- SST Steering Tube
- Magnetic Drain Plug
- Sacrificial Anodes
- YDC-30 Aluminum Alloy
- Phaze FiveTM Paint System
- Electro-deposited Powerhead Paint Process
CONVENIENCE/CONTROL
- High-Output (16-Amp) Alternator
- Electric and Pull-Start Available Together (some models)
- Retrofit Electric Start Available
- 45-Degree Steering in both Directions
- Built-In Resting Pads and Carry Handles
- Variable Trolling RPM Switch (VTS®)
- Freshwater Flush
- Spin-on Oil Filter
- Offset Steering Friction Lever
- Auto Decompression Device
- Vibration Reduction Mounting System
- C.A.R.B. Ultra Low Emissions 3 Star Rating
- External Oil Drain Plug
Specifications:
| ENGINE | |
| Engine Type | Two-cylinder, In-line |
| Displacement | 432 cc |
| Bore x Stroke | 65 x 65.1 mm |
| Full Throttle RPM Range | 5000 – 6000 |
| Variable Trolling RPM Range | 750–1050 rpm |
| 750–1050 rpm | 900 rpm |
| Horsepower Rating at Propshaft | 20 hp at 5500 rpm |
| Compression Ratio | 9.3:1 |
| Fuel Induction/Scavenging | SOHC, 2 valves per cylinder |
| Alternator Output | 16 amp |
| Starting Method | Manual |
| Ignition | CDI Microcomputer |
| Lubrication | Wet Sump |
| Degree of Trim | 4 positions (manual operation) |
| Degree of Tilt | -4 through +62? (manual tilt) |
| Exhaust | Through Propeller |
| Cooling | Water, Thermostatic Control |
| DRIVE | |
| Gear Shift | F-N-R (Forward-Neutral-Reverse) |
| Gear Ratio | 2.08:1 |
| SHAFT LENGTH | |
| See Model Code | S=15" L=20" |
| FUEL AND LUBRICATION | |
| Recommended Fuel | Regular Unleaded |
| Recommended Fuel Filtration | Yamaha 10-Micron or Mini-10TM |
| Recommended Oil | Yamalube® 4-M 10w-30 |
| Engine Oil Capacity | 1.1L / 1.0L (w/without filter) |
| LIMITED WARRANTY | |
| Recreational | 2 + 2 Years |
| Commercial | 1 Year |
*Weight estimated at time of publishing includes standard propeller, which is included with this model. Weight is measured without motor and gearcase oil.