Yamaha F20A Service Manual

2-11
SPEC
E
TIGHTENING TORQUES
Clamp bracket - lower (manual tilt) M8 8.0 0.8 5.8
Tilt stop lever M8 8.0 0.8 5.8
Clamp bracket - upper (PTT) 7/8 UNF 23.0 2.3 17.0
Clamp bracket - lower (PTT) M10 37.0 3.7 27.0
Oil pan M6 10.3 0.95 7.6
Engine oil drain bolt — 27.0 2.7 19.9
Muffler M6 9.3 0.95 6.9
Exhaust manifold M6 9.3 0.95 6.9
Exhaust guide M8 21.0 2.1 15.5
Grease nipple — 3.0 0.3 2.2
PTT mount M6 18.0 1.8 13.0
PTT UNIT
Plug screw M10 7.0 0.7 5.2
Tilt cylinder M6 9.0 0.9 6.6
Motor unit M6 7.0 0.7 5.2
Cylinder end screw — 90.0 9.2 66.4
Gear pump M4 4.0 0.4 3.0
Main valve — 7.0 0.7 5.2
Tilt piston M10 61.0 6.1 44.0
Manual control screw — 3.0 0.3 2.2
Up-relief valve — 6.0 0.6 4.3
ELECTRICAL
Oil pressure switch 1/8 NPTF 5.7 0.6 4.2
Starter motor mounting M8 29.5 3.0 21.8
CDI unit M6 7.0 0.7 5.2
Ignition coil M6 7.0 0.7 5.2
Engine stop switch — 4.5 0.5 3.3
Starter switch — 4.5 0.5 3.3
Part to be tightened Thread size
Tightening torque
Nm m • kg ft • lb

Yamaha F20A Specifications

General

Brand	Yamaha
Model	F20A
Category	Outboard Motor
Language	English