Yamaha F2.5A Owner's Manual page 18

Specifications and requirements
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Steering system:
Tiller handle
Starting system:
Manual starter
Starting carburetion system:
Choke valve
Valve clearance IN (cold engine):
0.08–0.12 mm (0.0032–0.0047 in)
Valve clearance EX (cold engine):
0.08–0.12 mm (0.0032–0.0047 in)
Lower unit:
Gear shift positions:
F2.5AMH Forward-neutral
F4BMH Forward-neutral-reverse
F5AMH Forward-neutral-reverse
F6CMH Forward-neutral-reverse
Gear ratio:
2.08(27/13)
Trim and tilt system:
Manual tilt
Propeller mark:
F2.5AMH BS
F4BMH BA
F5AMH BA
F6CMH BA
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Min. research octane number (RON):
90
Fuel tank capacity (built in type):
F2.5AMH 0.9 L (0.24 US gal,
0.20 Imp.gal)
F4BMH 1.1 L (0.29 US gal, 0.24 Imp.gal)
F5AMH 1.1 L (0.29 US gal, 0.24 Imp.gal)
F6CMH 1.1 L (0.29 US gal, 0.24 Imp.gal)
Recommended engine oil:
YAMALUBE 4 or 4-stroke outboard
motor oil
13
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Engine oil quantity:
F2.5AMH 0.35 L (0.37 US qt,
0.31 Imp.qt)
Engine oil quantity:
F4BMH 0.6 L (0.63 US qt, 0.53 Imp.qt)
F5AMH 0.6 L (0.63 US qt, 0.53 Imp.qt)
F6CMH 0.6 L (0.63 US qt, 0.53 Imp.qt)
Lubrication system:
F2.5AMH Splash
F4BMH Wet sump
F5AMH Wet sump
F6CMH Wet sump
Recommended gear oil:
YAMALUBE outboard gear oil or Hypoid
gear oil
Recommended gear oil grade:
SAE 90 API GL-4
Gear oil quantity:
F2.5AMH 0.075 L (0.079 US qt,
0.066 Imp.qt)
F4BMH 0.100 L (0.106 US qt,
0.088 Imp.qt)
F5AMH 0.100 L (0.106 US qt,
0.088 Imp.qt)
F6CMH 0.100 L (0.106 US qt,
0.088 Imp.qt)
Tightening torque:
Spark plug:
F2.5AMH 25 Nm (2.55 kgf-m, 18.4 ft-lb)
F4BMH 13 Nm (1.33 kgf-m, 9.6 ft-lb)
F5AMH 13 Nm (1.33 kgf-m, 9.6 ft-lb)
F6CMH 13 Nm (1.33 kgf-m, 9.6 ft-lb)
Engine oil drain bolt:
18 Nm (1.84 kgf-m, 13.3 ft-lb)