Outboard · propeller size
Yamaha F70LA propeller size
The Yamaha F70LA is a 70 hp outboard with a 2.33:1 gearcase. In 2 published sea trials it ran 6,250–6,300 rpm at full throttle on 13.625 in props of 14 in pitch. The right prop lands full throttle in the engine's range with your normal load.
Power70 hprated
Gearcase2.33:1ratio
Sea trials2published tests
Pitch run14 inin those tests
Free checkPrefilled
MotorYamaha F70LA
Engine1 × 70 hp
FuelPetrol
Boatyours, in the check
Prop todayyours, in the check
Free · no account · under two minutesSpecifications
F70LA at a glance.
- Maker
- Yamaha
- Model
- F70LA
- Power
- 70 hp
- Gearcase ratio
- 2.33:1
- Full-throttle rpm in published tests
- 6,250–6,300 rpm
- Props in those tests
- 13.625 in diameter, 14 in pitch
- Prop lines in those tests
- Yamaha Yamaha Aluminum
| Boat | Prop | WOT rpm | Speed | Conditions | Source |
|---|---|---|---|---|---|
| Alumacraft Yukon 180 TL · 17.83 ft | 13.625 × 14 in Yamaha Aluminum, aluminium, 3-blade | 6,250 | 28.9 kn | 1 × 70 hp · ≈ 652 kg (1,438 lb) as tested, estimated | yamahaoutboards.com |
| Key West 1720 CC · 17.17 ft | 13.625 × 14 in aluminium, 3-blade | 6,300 | 29.3 kn | 1 × 70 hp · 906 kg (1,997 lb) as tested | yamahaoutboards.com |
Related
Other 70 hp outboards.
Cross-brand options appear as other makers' engines reach the data.
Questions
About the Yamaha F70LA.
What rpm did the Yamaha F70LA reach at full throttle in published tests?
6,250–6,300 rpm across 2 published tests, with top speeds of 28.9–29.3 kn. Each test is listed above with its source.
What prop size did boats with a Yamaha F70LA run?
13.625 × 14 in on the Alumacraft Yukon 180 TL; 13.625 × 14 in on the Key West 1720 CC. The right size for your boat depends on its weight, hull and load; the free check works it out.
What is the Yamaha F70LA's gearcase ratio?
2.33:1, per Yamaha's published data.