Yamaha F20B Owner's Manual page 16

Specifications and requirements
0.8–0.9 mm (0.031–0.035 in)
Control system:
F15CEH Tiller
F15CMH Tiller
F20BEHP Tiller
F20BEP Remote control
F20BMH Tiller
Starting system:
F15CEH Electric
F15CMH Manual
F20BEHP Electric
F20BEP Electric
F20BMH Manual
Starting carburetion system:
Prime start
Valve clearance (cold engine) IN:
0.15–0.25 mm (0.0059–0.0098 in)
Valve clearance (cold engine) EX:
0.25–0.35 mm (0.0098–0.0138 in)
Min. cold cranking amps (CCA/EN):
F15CEH 347.0 A
F20BEHP 347.0 A
F20BEP 347.0 A
Min. rated capacity (20HR/IEC):
F15CEH 40.0 Ah
F20BEHP 40.0 Ah
F20BEP 40.0 Ah
Maximum generator output:
10 A
Drive unit:
Gear positions:
Forward-neutral-reverse
Gear ratio:
2.08(27/13)
Trim and tilt system:
F15CEH Manual tilt
F15CMH Manual tilt
F20BEHP Power tilt
F20BEP Power tilt
F20BMH Manual tilt
Propeller mark:
10
J
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Fuel tank capacity:
F15CEH 12 L
(3.17 US gal, 2.64 Imp.gal)
F15CMH 12 L
(3.17 US gal, 2.64 Imp.gal)
F20BEHP 24 L
(6.34 US gal, 5.28 Imp.gal)
F20BEP 24 L
(6.34 US gal, 5.28 Imp.gal)
F20BMH 24 L
(6.34 US gal, 5.28 Imp.gal)
Recommended engine oil:
4-stroke outboard motor oil
Recommended engine oil group 1*:
SAE 10W-30/10W-40/5W-30
API SE/SF/SG/SH/SJ/SL
Recommended engine oil group 2*:
SAE 15W-40/20W-40/20W-50
API SH/SJ/SL
Lubrication:
Wet sump
Total engine oil quantity (oil pan capacity):
Without oil filter replacement:
1.6 L (1.69 US qt, 1.41 Imp.qt)
With oil filter replacement:
1.8 L (1.90 US qt, 1.58 Imp.qt)
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
0.250 L (0.264 US qt, 0.220 Imp.qt)
Tightening torque for engine:
Spark plug:
18.0 Nm (1.84 kgf-m, 13.3 ft-lb)
Propeller nut:
17.0 Nm (1.73 kgf-m, 12.5 ft-lb)
Engine oil drain bolt:
28.0 Nm (2.86 kgf-m, 20.7 ft-lb)