Specifications-250 Xs Optimax - Mercury 250 XS OptiMax Operation, Maintenance & Installation Manual

GENERAL INFORMATION
Specifications—250 XS OptiMax
Attribute
Horsepower
Engine displacement
Engine
weight
Full throttle RPM range
Overspeed rev limit
Idle RPM
Neutral rev limit
Cylinder configuration
Cylinder bore
Stroke
Recommended spark plug
Spark plug gap
Firing order
Maximum timing
Idle timing
Fuel line pressure
Air pressure
Gear ratio
Required fuel
Recommended oil
Gearcase oil
Gearcase lubricant capacity
Battery rating*
Charging system output
eng
20 in.
Sport Master
25 in.
Fleet Master
30 in.
Fleet Master
Sport Master
Fleet Master
Specifications
250 HP (184 kw)
3038 cc (185 cid)
229 kg (505 lb)
237 kg (522 lb)
242 kg (533 lb)
5500–6000 RPM
6300 RPM
585 RPM
2250 RPM
92.075 mm (3.625 in.)
76.2 mm (3.000 in.)
NGK IZFR6J‑11 (factory installed)
NGK IZFR6J (service)
1.1 mm (0.042 in.)
1‑2‑3‑4‑5‑6
Controlled by PCM
Controlled by PCM
655 ± 13.8 kPa (95 ± 2 psi)
758 ± 13.8 kPa (110 ± 2 psi)
Unleaded gasoline
87 R+M/2 octane (90 RON)
Mercury Racing 2‑Stroke Oil
Mercury Racing Gear Lube
710 ml (24 fl oz)
1000 marine cranking amps (MCA), 800
cold cranking amps (CCA), 105 Ah
50 A maximum
15
60° V6
1.62:1
1.75:1
1.75:1