Outboard motor · 9,9 HPYamaha T9.9XMHB
formerly FT9.9LMHX
TillerInstallation 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 T9.9XMHB — 9,9 HP
Yamaha T9.9XMHB is a four-stroke outboard motor rated at 9,9 HP (7,3 kW at the propeller shaft), successor to the FT9.9LMHX. Engine: SOHC, rzędowy 2 (High Thrust), displacement 212 cm³, 1 gaźnik. Dry weight: 45–53 kg.
The tiller version — you steer directly with the handle, with throttle and shift at hand, no console or cables. A practical choice for inflatables, tenders and smaller RIBs. The model has manual pull start and manual angle adjustment (trim in several positions).
Shaft length X (25″ / 635 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: 620 mm.
The High Thrust version has a higher-ratio gearcase and a large propeller, giving strong thrust at low revs — for heavier boats, inflatables and workboats.
Fuel consumption at full power according to Yamaha: 3,9 L/h @5500 obr/min. 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 T9.9XMHB
| 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 (High Thrust) |
| 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 | 2,92 (38/13) |
| Gear shift | F-N-R |
| Shaft lengths in the family | L, X |
| Overall height (X shaft) | 1263 mm |
| Transom height (X shaft) | 620 mm |
| Beam | MH/WH: 371 mm, E/EP: 333 mm |
| Weight (dry) | 45–53 kg |
| Steering angle | 43° each way (EP: 38°) |
Source: Yamaha Product Information Guide 2026 (FT9.9L family). Fuel consumption — manufacturer’s reference data.