Yamaha Thunderace YZF1000R User Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6
EAU00630
Adjusting the carburetors
The carburetors are important parts of
the engine and require very sophisti-
cated adjustment. Therefore, most car-
buretor adjustments should be left to a
Yamaha dealer, who has the neces-
sary professional knowledge and expe-
rience. The adjustment described in
the following section, however, may be
serviced by the owner as part of routine
maintenance.
EC000095
CAUTION:
_
The carburetors have been set and
extensively tested at the Yamaha
factory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-
mance of or damage to the engine.
_
EAU00632
Adjusting the engine idling
speed
The engine idling speed must be
checked and, if necessary, adjusted as
follows at the intervals specified in the
periodic maintenance and lubrication
chart.
1. Start the engine and warm it up
for several minutes at 1,000–
2,000 r/min while occasionally
revving it to 4,000–5,000 r/min.
NOTE:
_
The engine is warm when it quickly re-
sponds to the throttle.
_
2. Check the engine idling speed and,
if necessary, adjust it to specification
by turning the throttle stop screw. To
increase the engine idling speed,
turn the screw in direction
a
. To de-
crease the engine idling speed, turn
the screw in direction
b
.
NOTE:
_
If the specified idling speed cannot be
obtained as described above, have a
Yamaha dealer make the adjustment.
_
1. Throttle stop screw
Engine idling speed:
1,000–1,100 r/min (for CH, A)
1,050–1,150 r/min (except for
CH, A)
E_4sv.book Page 16 Friday, November 10, 2000 3:03 PM

Yamaha Thunderace YZF1000R Specifications

General

Displacement	1002 cc
Compression Ratio	11.5:1
Final Drive	Chain
Frame	Aluminium Deltabox
Front Tire	120/70 ZR17
Rear Tire	180/55 ZR17
Engine Type	Liquid-cooled, 4-stroke, DOHC, 5-valve, inline-four
Bore x Stroke	75.5 mm x 56 mm
Maximum Power	145 hp @ 10, 000 rpm
Maximum Torque	108 Nm @ 8, 500 rpm
Ignition	Digital
Transmission	5-speed
Front Suspension	Telescopic forks, adjustable preload, compression and rebound damping
Rear Suspension	Swingarm, adjustable preload, compression and rebound damping
Front Brakes	2x 298mm discs 4 piston calipers
Rear Brakes	1x 245mm disc 2 piston caliper
Seat Height	810 mm
Fuel Capacity	19 liters
Dry Weight	198 kg
Ground Clearance	130 mm