Yamaha V star 1100 User Manual

TROUBLESHOOTING 35
2
FOUR-STROKE ENGINE OPERATING PRINCIPLES
Intake valve opens
as piston begins
downward, drawing
air/fuel mixture into
the cylinder through
the valve.
COMPRESSION
INTAKE
Intake valve
closes and
piston rises
in cylinder,
compressing
air/fuel
mixture.
EXHAUST
POWER
Spark plug
ignites
compressed
mixture,
driving piston
downward.
Force is applied
to crankshaft,
causing it to
rotate.
1
Air/fuel
Cylinder
Intake v
alve
Carburetor
Exhaust
valve
Exhaust
Exhaust valve
opens as piston
rises in cylinder,
pushing spent
gasses out through
the valve.

Yamaha V star 1100 Specifications

General

Displacement	1063cc
Bore x Stroke	95.0mm x 75.0mm
Compression Ratio	8.3:1
Ignition	TCI
Transmission	5-speed
Final Drive	Shaft
Front Suspension	Telescopic fork
Front Brakes	Dual disc
Front Tire	130/90-16
Rear Tire	170/80-15
Engine Type	Air-cooled, SOHC, V-twin
Fuel Capacity	4.5 gallons
Rear Brakes	Single disc