Specifications and requirements17EMU38091SpecificationsTIP:“(AL)” stated in the specification data belowrepresents the numerical value for the alumi-num propeller installed.EMU2821SDimension and weight:Overall length:F2.5MHA 623 mm (24.5 in)F4MHA 750 mm (29.5 in)F6MHA 750 mm (29.5 in)Overall width:F2.5MHA 345 mm (13.6 in)F4MHA 403 mm (15.9 in)F6MHA 403 mm (15.9 in)Overall height S:F2.5MHA 1021 mm (40.2 in)F4MHA 1040 mm (40.9 in)F6MHA 1040 mm (40.9 in)Overall height L:F2.5MHA 1148 mm (45.2 in)F4MHA 1168 mm (46.0 in)F6MHA 1168 mm (46.0 in)Motor transom height S:F2.5MHA 432 mm (17.0 in)F4MHA 440 mm (17.3 in)F6MHA 440 mm (17.3 in)Motor transom height L:F2.5MHA 559 mm (22.0 in)F4MHA 568 mm (22.4 in)F6MHA 568 mm (22.4 in)Dry weight (AL) S:F2.5MHA 17 kg (37 lb)F4MHA 27 kg (60 lb)F6MHA 27 kg (60 lb)Dry weight (AL) L:F2.5MHA 18 kg (40 lb)F4MHA 28 kg (62 lb)F6MHA 28 kg (62 lb)Performance:Full throttle operating range:F2.5MHA 5250–5750 r/minF4MHA 4000–5000 r/minF6MHA 4500–5500 r/minRated power:F2.5MHA 1.8 kW (2.5 HP)Rated power:F4MHA 2.9 kW (4 HP)F6MHA 4.4 kW (6 HP)Idle speed (in neutral):F2.5MHA 1800-2000 r/minF4MHA 1450-1550 r/minF6MHA 1450-1550 r/minPower unit:Type:4-stroke OHV S1 2valvesTotal displacement:F2.5MHA 72 cm³ (4.4 c.i.)F4MHA 139 cm³ (8.5 c.i.)F6MHA 139 cm³ (8.5 c.i.)Bore × stroke:F2.5MHA 54.0 × 31.5 mm (2.13 × 1.24in)F4MHA 62.0 × 46.0 mm (2.44 × 1.81 in)F6MHA 62.0 × 46.0 mm (2.44 × 1.81 in)Ignition system:F2.5MHA TCIF4MHA CDIF6MHA CDISpark plug (NGK):F2.5MHA BR6HSF4MHA CR6HSBF6MHA CR6HSBSpark plug gap:0.6–0.7 mm (0.024–0.028 in)Steering system:Tiller handleStarting system:Manual starter