Outboard motor · 70 HPYamaha F70LB
formerly F70BETL, F70AETL
Mechanical control leverSteering: mechanical or hydraulic, fitted in the boatInstallation and rigging at the GRAND BOATS Poland service centre in Łężyce. Sold in cooperation with an authorised Yamaha dealer; manufacturer warranty 3 + 2 years at an authorised Yamaha service.
Yamaha F70LB — 70 HP
Yamaha F70LB is a four-stroke outboard motor rated at 70 HP (51,5 kW at the propeller shaft), successor to the F70BETL / F70AETL. Engine: SOHC, rzędowy 4, 16 zaworów, displacement 996 cm³, wtrysk paliwa. Dry weight: 120–124 kg.
A motor for remote control from the console — throttle and shift by cables from the control lever (mechanical controls), with mechanical or hydraulic steering in the boat. A proven choice for console boats that is simple to service. The model has electric start and power trim and tilt (PTT) — the motor angle is set with a button, even while underway.
Shaft length L (20″ / 508 mm). The shaft is matched to the boat’s transom height so that the anti-cavitation plate runs just below the water surface. Transom height for this shaft according to Yamaha: 534 mm.
Fuel consumption at full power according to Yamaha: 21,2 L/h @5800 obr/min. The F70LB is within the power range the shipyard recommends for the GRAND G500, GRAND S470 NL, GRAND S470 NS, GRAND S470 N. At the GRAND BOATS Poland service centre in Łężyce near Gdynia we install the engine, do the rigging and choose the propeller. The engine is supplied in cooperation with an authorised Yamaha dealer; the manufacturer warranty (3 + 2 years) is carried out by an authorised Yamaha service.
Yamaha F70LB
| Maximum output (at propeller shaft) | 70 KM (51,5 kW) |
|---|---|
| Full-throttle range | 5300–6300 rpm |
| Idle speed | 700–800 rpm |
| Fuel consumption (reference data) | 21.2 L/h @5800 rpm |
| Engine type | 4-stroke, SOHC, in-line 4, 16 valves |
| Displacement | 996 cm³ |
| Bore × stroke | 65,0 × 75,0 mm |
| Compression ratio | 9,4:1 |
| Fuel system | Fuel injection |
| Lubrication | Wet sump |
| Engine oil capacity | 2.1 L / 1.9 L (with / without filter change) |
| Ignition | TCI |
| Spark plug | LKR7E |
| Alternator | 16 A (battery charging: 9 A) |
| Trim | PTT: stepless |
| Gear ratio | 2,33 (28/12) |
| Gear shift | F-N-R |
| Shaft lengths in the family | L, X (ET only) |
| Overall height (L shaft) | 1484 mm |
| Transom height (L shaft) | 534 mm |
| Beam | 386 mm |
| Weight (dry) | 120–124 kg |
| Steering angle | 40° each way |
Source: Yamaha Product Information Guide 2026 (F70B family). Fuel consumption — manufacturer’s reference data.
