Yamaha F6C Owner's Manual page 18

Specifications and requirements
Ignition system:
F2.5AMH TCI
F4BMH CDI
F5AMH CDI
F6CMH CDI
Spark plug (NGK):
F2.5AMH BR6HS
F4BMH CR6HSB
F5AMH CR6HSB
F6CMH CR6HSB
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Control system:
Tiller handle
Starting system:
Manual starter
Starting carburetion system:
Choke valve
Valve clearance (cold engine) IN:
0.08–0.12 mm (0.0032–0.0047 in)
Valve clearance (cold engine) EX:
0.08–0.12 mm (0.0032–0.0047 in)
Drive unit:
Gear 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
13
Fuel tank capacity:
F4BMH 12.0 L (3.17 US gal,
2.64 Imp.gal)
F5AMH 12.0 L (3.17 US gal,
2.64 Imp.gal)
F6CMH 12.0 L (3.17 US gal,
2.64 Imp.gal)
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:
4-stroke outboard motor oil
Recommended engine oil grade 1:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Engine oil quantity:
F2.5AMH 0.4 L (0.42 US qt, 0.35 Imp.qt)
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:
F2.5AMH Splash
F4BMH Wet sump
F5AMH Wet sump
F6CMH Wet sump
Recommended gear oil:
Hypoid gear oil SAE#90
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)