Mercury 250 XS OptiMax Operation, Maintenance & Installation Manual page 27

GENERAL INFORMATION
Overspeed rev limit
Idle RPM
Neutral rev limit
Cylinder configuration
Cylinder bore
Stroke
Spark plug
Spark plug gap
Firing order
Maximum timing
Idle timing
Fuel pressure
Air pressure
Gear ratio
Required fuel
Recommended oil
Gearcase oil
Gearcase lubricant capacity
Battery rating
Charging system output
1. Battery manufacturers may rate and test their batteries to different standards. Consult with the specific battery
manufacturer for comparison ratings.
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Specifications
20 in.
(Torque Master)
20 in.
(Sport Master)
25 in.
(Torque Master)
25 in.
(Fleet Master)
30 in. Models
(Fleet Master)
Torque Master
Sport Master
Fleet Master
17
6350 RPM
6350 RPM
6350 RPM
5900 RPM
5900 RPM
585 RPM
1900 RPM
60° V6
92.075 mm (3.625 in.)
78.9 mm (3.110 in.)
NGK IZFR7M
0.81 mm (0.032 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)
1.62:1
1.75:1
1.62:1
1.75:1
1.75:1
Premium unleaded
91 R+M/2 octane (96 RON)
Premium Plus TC‑W3 2‑Cycle
High‑Performance gear lube
710 ml (24 fl oz)
1000 marine cranking amps,
800 cold cranking amps
105 amp hours
50 A maximum
1.