2021 YAMAHA YZF1000 engine

INSTRUMENT AND CONTROL FUNCTIONS
3-9
3
EAU02935
Fuel tank cap To open the fuel tank cap
Open the fuel tank cap lock cover, in-
sert the key into the lock, and then turn
it 1/4 turn clockwise. The lock will be re-
leased and the fuel tank cap can be
opened.
To close the fuel tank cap
1. Push the fuel tank cap into posi-
tion with the key inserted in the
lock. 2. Turn the key counterclockwise to
the original position, remove it,
and then close the lock cover.
NOTE:_ The fuel tank cap cannot be closed un-
less the key is in the lock. In addition,
the key cannot be removed if the cap is
not properly closed and locked. _
EWA00025
WARNING
_ Make sure that the fuel tank cap is
properly closed before riding. _
EAU03753
Fuel Make sure that there is sufficient fuel in
the tank. Fill the fuel tank to the bottom
of the filler tube as shown.
EW000130
WARNING
_ l
Do not overfill the fuel tank, oth-
erwise it may overflow when the
fuel warms up and expands.
l
Avoid spilling fuel on the hot
engine.
_
1. Fuel tank cap lock cover
2. Unlock.
1. Fuel tank filler tube
2. Fuel level
E_4sv.book Page 9 Friday, November 10, 2000 3:03 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-10
3
EAU00186
CAUTION:_ l
Immediately wipe off spilled fuel
with a clean, dry, soft cloth,
since fuel may deteriorate paint-
ed surfaces or plastic parts.
l
For Germany only: Whenever
replacement is necessary, use a
fuel tank cap of the same spe-
cial design as the original.
_
EAU00191
NOTE:_ If knocking (or pinging) occurs, use
gasoline of a different brand or with a
higher octane grade. _
EAU02955
Fuel tank breather hose Before operating the motorcycle:l
Check the fuel tank breather hose
connection.
l
Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
l
Make sure that the end of the fuel
tank breather hose is not blocked,
and clean it if necessary.
EAU03839
Starter (choke) lever “ ” Starting a cold engine requires a richer
air-fuel mixture, which is supplied by
the starter (choke).
Move the lever in direction
a to turn on
the starter (choke).
Move the lever in direction
b to turn off
the starter (choke). Recommended fuel:
Regular unleaded gasoline with a
research octane number of 91 or
higher
Fuel tank capacity:
Total amount:
20 L
Reserve amount:
4.5 L
1. Fuel tank breather hose
1. Starter (choke) lever “ ”
E_4sv.book Page 10 Friday, November 10, 2000 3:03 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-17
3
EAU00315
WARNING
_ This shock absorber contains high-
ly pressurized nitrogen gas. For
proper handling, read and under-
stand the following information be-
fore handling the shock absorber.
The manufacturer cannot be held re-
sponsible for property damage or
personal injury that may result from
improper handling.l
Do not tamper with or attempt to
open the gas cylinder.
l
Do not subject the shock ab-
sorber to an open flame or other
high heat sources, otherwise it
may explode due to excessive
gas pressure.
l
Do not deform or damage the
gas cylinder in any way, as this
will result in poor damping per-
formance.
l
Always have a Yamaha dealer
service the shock absorber.
_
EAU00324
Luggage strap holders There are four luggage strap holders
below the passenger seat, two of which
can be turned out for easier access.
EAU01571
EXUP system This motorcycle is equipped with
Yamaha’s EXUP (EXhaust Ultimate
Power valve) system. This system
boosts engine power by means of a
valve that regulates the diameter of the
exhaust pipe. The EXUP system valve
is constantly adjusted in accordance
with the engine speed by a computer-
controlled servomotor.
EC000027
CAUTION:_ l
The EXUP system has been set
and extensively tested at the
Yamaha factory. Changing
these settings without sufficient
technical knowledge may result
in poor performance of or dam-
age to the engine.
l
If the EXUP system does not op-
erate, have a Yamaha dealer
check it.
_
1. Luggage strap holder (´ 4)
E_4sv.book Page 17 Friday, November 10, 2000 3:03 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-18
3
EAU00330
Sidestand The sidestand is located on the left side
of the frame. Raise the sidestand or
lower it with your foot while holding the
motorcycle upright.NOTE:_ The built-in sidestand switch is part of
the ignition circuit cut-off system, which
cuts the ignition in certain situations.
(See further down for an explanation of
the ignition circuit cut-off system.) _
EW000044
WARNING
_ The motorcycle must not be ridden
with the sidestand down, or if the
sidestand cannot be properly
moved up (or does not stay up), oth-
erwise the sidestand could contact
the ground and distract the opera-
tor, resulting in a possible loss of
control. Yamaha’s ignition circuit
cut-off system has been designed to
assist the operator in fulfilling the
responsibility of raising the side-
stand before starting off. Therefore,
check this system regularly as de-
scribed below and have a Yamaha
dealer repair it if it does not function
properly. _
EAU03720
Ignition circuit cut-off system The ignition circuit cut-off system (com-
prising the sidestand switch, clutch
switch and neutral switch) has the fol-
lowing functions.l
It prevents starting when the trans-
mission is in gear and the side-
stand is up, but the clutch lever is
not pulled.
l
It prevents starting when the trans-
mission is in gear and the clutch
lever is pulled, but the sidestand is
still down.
l
It cuts the running engine when
the transmission is in gear and the
sidestand is moved down.
Periodically check the operation of the
ignition circuit cut-off system according
to the following procedure.
EW000045
WARNING
_ If a malfunction is noted, have a
Yamaha dealer check the system
before riding. _
E_4sv.book Page 18 Friday, November 10, 2000 3:03 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-19
3
CD-01E
With the engine turned off:
1. Move the sidestand down.
2. Make sure that the engine stop switch is set to “ ”.
3. Turn the key to “ON”.
4. Shift the transmission into the neutral position.
5. Push the start switch.
Does the engine start?
The neutral switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
With the engine still running:
6. Move the sidestand up.
7. Keep the clutch lever pulled.
8. Shift the transmission into gear.
9. Move the sidestand down.
Does the engine stall?After the engine has stalled:
10. Move the sidestand up.
11. Keep the clutch lever pulled.
12. Push the start switch.
Does the engine start?
The sidestand switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.The clutch switch may be defective.
The motorcycle should not be ridden until
checked by a Yamaha dealer.
NO
NOTE:This check is most reliable if performed with
a warmed-up engine.
YESYES NO
The system is OK.
The motorcycle can be ridden.
YES NO
E_4sv.book Page 19 Friday, November 10, 2000 3:03 PM

4-1
4
EAU01114
4-PRE-OPERATION CHECKSThe condition of a vehicle is the owner’s responsibility. Vital components can start to deteriorate quickly and unexpectedly,
even if the vehicle remains unused (for example, as a result of exposure to the elements). Any damage, fluid leakage or loss
of tire air pressure could have serious consequences. Therefore, it is very important, in addition to a thorough visual inspec-
tion, to check the following points before each ride.
EAU03439
Pre-operation check list
ITEM CHECKS PAGE
Fuel• Check fuel level in fuel tank.
• Refuel if necessary.
• Check fuel line for leakage.3-9–3-10
Engine oil• Check oil level in engine.
• If necessary, add recommended oil to specified level.
• Check vehicle for oil leakage.6-9
Coolant• Check coolant level in reservoir.
• If necessary, add recommended coolant to specified level.
• Check cooling system for leakage.6-12–6-13
Front brake• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.6-21–6-24
Rear brake• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check fluid level in reservoir.
• If necessary, add recommended brake fluid to specified level.
• Check hydraulic system for leakage.6-21–6-24
Clutch• Check operation.
• If soft or spongy, have Yamaha dealer bleed hydraulic system.
• Check fluid level in reservoir.
• If necessary, add recommended fluid to specified level.
• Check hydraulic system for leakage.6-22
Throttle grip• Make sure that operation is smooth.
• Lubricate throttle grip, housing and cables if necessary.
• Check free play.
• If necessary, have Yamaha dealer make adjustment.6-17
E_4sv.book Page 1 Friday, November 10, 2000 3:03 PM

OPERATION AND IMPORTANT RIDING POINTS
5
Starting the engine ............................................................................ 5-1
Starting a warm engine ..................................................................... 5-3
Shifting .............................................................................................. 5-3
Recommended shift points (for Switzerland only) ............................. 5-4
Tips for reducing fuel consumption ................................................... 5-4
Engine break-in ................................................................................. 5-4
Parking .............................................................................................. 5-5
E_4sv.book Page 1 Friday, November 10, 2000 3:03 PM

5-1
5
EAU00372
5-OPERATION AND IMPORTANT RIDING POINTS
EAU00373
WARNING
_ l
Become thoroughly familiar
with all operating controls and
their functions before riding.
Consult a Yamaha dealer re-
garding any control or function
that you do not thoroughly un-
derstand.
l
Never start the engine or oper-
ate it in a closed area for any
length of time. Exhaust fumes
are poisonous, and inhaling
them can cause loss of con-
sciousness and death within a
short time. Always make sure
that there is adequate ventila-
tion.
l
Before starting out, make sure
that the sidestand is up. If the
sidestand is not raised com-
pletely, it could contact the
ground and distract the opera-
tor, resulting in a possible loss
of control.
_
EAU03818*
Starting the engine In order for the ignition circuit cut-off
system to enable starting, one of the
following conditions must be met:l
The transmission is in the neutral
position.
l
The transmission is in gear with
the clutch lever pulled and the
sidestand up.
EW000054
WARNING
_ l
Before starting the engine,
check the function of the igni-
tion circuit cut-off system ac-
cording to the procedure
described on page 3-19.
l
Never ride with the sidestand
down.
_
1. Turn the key to “ON” and make
sure that the engine stop switch is
set to “ ”.
EC000035
CAUTION:_ If the fuel level warning light comes
on, check the fuel level, and, if nec-
essary, refuel as soon as possible. _2. Shift the transmission into the neu-
tral position.NOTE:_ When the transmission is in the neutral
position, the neutral indicator light
should be on, otherwise have a
Yamaha dealer check the electrical cir-
cuit. _3. Turn the starter (choke) on and
completely close the throttle. (See
page 3-10 for starter (choke) oper-
ation.)
4. Start the engine by pushing the
start switch.
E_4sv.book Page 1 Friday, November 10, 2000 3:03 PM