TheWaterDog
Recruit
- Joined
- Jan 19, 2017
- Messages
- 2
Hey All,
Hoping someone can clarify something.
Please see specs below. Specs were taken from Yamaha website.
How can specs be identical between a 20hp and 15hp motor? Where is the extra 5hp coming from for the 20hp motor? http://yamahaoutboards.com/outboards/Portable/comparisons
Hoping someone can clarify something.
Please see specs below. Specs were taken from Yamaha website.
How can specs be identical between a 20hp and 15hp motor? Where is the extra 5hp coming from for the 20hp motor? http://yamahaoutboards.com/outboards/Portable/comparisons
Yamaha Portable F20 | Yamaha Portable F15 | ||
Engine Type | 2 Cylinder | 2 Cylinder | |
Displacement | 22.1 ci (362 cc) | 22.1 ci (362 cc) | |
Bore x Stroke | 63 x 58.1mm (2.48 x 2.29 in) | 63 x 58.1mm (2.48 x 2.29 in) | |
Compression Ratio | 9.3:1 | 9.3:1 | |
Prop Shaft Horsepower | 20hp @ 5500rpm | 15hp @ 5500rpm | |
Full Throttle RPM Range | 5000 ~ 6000 rpm | 5000 ~ 6000 rpm | |
Fuel Induction | SOHC | SOHC | |
Intake | Carburetor | Carburetor | |
Exhaust | Through Propeller | Through Propeller | |
Cooling | Water/Thermostatic Control | Water/Thermostatic Control | |
Ignition | CDI Micro Computer | CDI Micro Computer | |
Spark Plug | DPR6EB-900-000 | DPR6EB-900-000 | |
Alternator Output | 10A ** | 10A ** | |
Starting System | Manual or Electric | Manual or Electric | |
Lubrication | Wet Sump | Wet Sump | |
Engine Oil Capacity | 1.8L/1.6L w/without filter | 1.8L/1.6L w/without filter | |
Recommended Engine Oil | Yamalube[SUP]?[/SUP] 4M (See owner's manual) | Yamalube[SUP]?[/SUP] 4M (See owner's manual) | |
Recommended Fuel Filtration | Yamaha Mini 10-Micron Fuel/Water Separating Filter (external) | Yamaha Mini 10-Micron Fuel/Water Separating Filter (external) | |
Recommended Fuel | Regular Unleaded (Minimum Pump Octane 87) | Regular Unleaded (Minimum Pump Octane 87) | |
Ethanol Blend Limit | 10% Maximum | 10% Maximum | |
Gear Ratio | (27:13) 2.08:1 | (27:13) 2.08:1 | |
Gear Shift | Forward, Neutral, Reverse | Forward, Neutral, Reverse | |
Shaft Length | S=15" L=20" | S=15" L=20" | |
Degree of Tilt | 67?- 71? | 67?- 71? | |
Degree of Trim | 4 positions | 4 positions | |
C.A.R.B. Rating | 3-Star | 3-Star |