Yamaha FZS1000(N) 2001 User Manual

5-24
VALVES AND VALVE SPRINGS
ENG
NOTE:
3. Eliminate:
 carbon deposits
(from the valve face and valve seat)
4. Check:
 valve face
Pitting/wear  Grind the valve face.
 valve stem end
Mushroom shape or diameter larger than the
body of the valve stem  Replace the valve.
5. Measure:
 valve margin thickness
a
Out of specification  Replace the valve.
Valve margin thickness
0.5 X 0.9 mm
6. Measure:
 valve stem runout
Out of specification  Replace the valve.
 When installing a new valve, always replace
the valve guide.
 If the valve is removed or replaced, always re-
place the oil seal.
Valve stem runout
0.01 mm
EAS00240
CHECKING THE VALVE SEATS
The following procedure applies to all of the
valves and valve seats.
1. Eliminate:
 carbon deposits
(from the valve face and valve seat)
2. Check:
 valve seat
Pitting/wear  Replace the cylinder head.
3. Measure:
 valve seat width
a
Out of specification  Replace the cylinder
head.
Valve seat width
Intake: 0.9 X 1.1 mm
Exhaust: 0.9 X 1.1 mm

Yamaha FZS1000(N) 2001 Specifications

General

Displacement	998 cc
Bore x Stroke	74.0 mm x 58.0 mm
Compression Ratio	11.4:1
Fuel System	Fuel Injection
Transmission	6-speed
Seat Height	820 mm
Fuel Capacity	21 liters
Rear Suspension	Swingarm (link suspension)
Front Tire	120/70 ZR17
Rear Tire	180/55 ZR17
Wheelbase	1, 450 mm
Dry Weight	208 kg
Final Drive	Chain
Frame	Aluminium Deltabox
Starter	Electric
Engine Type	Liquid-cooled, 4-stroke, DOHC, 5-valve, inline-4
Power	143 hp @ 10, 000 rpm
Torque	106 Nm @ 7, 500 rpm
Ignition	Digital TCI
Front Suspension	Telescopic fork
Front Brake	Double disc, Ø 298 mm
Rear Brake	Single disc, Ø 245 mm
Ground Clearance	140 mm
Valves	20 valves