Outboard motor · 9,9 HPYamaha F9.9SEB
formerly F9.9JES
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 F9.9SEB — 9,9 HP
Yamaha F9.9SEB is a four-stroke outboard motor rated at 9,9 HP (7,3 kW at the propeller shaft), successor to the F9.9JES. Engine: SOHC, rzędowy 2, displacement 212 cm³, 1 gaźnik. Dry weight: 40–45 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 manual angle adjustment (trim in several positions).
Shaft length S (15″ / 381 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: 431 mm.
Fuel consumption at full power according to Yamaha: 3,9 L/h @5500 obr/min. The F9.9SEB is within the power range the shipyard recommends for the GRAND S330, GRAND S300 L, GRAND S300 S, GRAND S300, GRAND S275. 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 F9.9SEB
| Maximum output (at propeller shaft) | 9,9 KM (7,3 kW) |
|---|---|
| Full-throttle range | 5000–6000 rpm |
| Idle speed | 1000–1100 rpm |
| Fuel consumption (reference data) | 3.9 L/h @5500 rpm |
| Engine type | 4-stroke, SOHC, in-line 2 |
| Displacement | 212 cm³ |
| Bore × stroke | 56,0 × 43,0 mm |
| Compression ratio | 9,4:1 |
| Fuel system | 1 carburettor |
| Lubrication | Wet sump |
| Engine oil capacity | 0,8 L |
| Ignition | CDI |
| Spark plug | BR6HS-10 |
| Alternator | 6 A |
| Trim | 4 positions |
| Gear ratio | 2,08 (27/13) |
| Gear shift | F-N-R |
| Shaft lengths in the family | S, L |
| Overall height (S shaft) | 1008 mm |
| Transom height (S shaft) | 431 mm |
| Beam | MH: 357 mm, E: 333 mm |
| Weight (dry) | 40–45 kg |
| Steering angle | 43° each way |
Source: Yamaha Product Information Guide 2026 (F9.9J family). Fuel consumption — manufacturer’s reference data.
Boats rated for 9,9 HP
S330
S300 L
S300 S
S300
