1999 YAMAHA YZF-R7 check engine

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INSTRUMENT AND CONTROL FUNCTIONS
EAU00185
CAUTION:
Always wipe off spilled fuel immedi-
ately with a dry and clean soft cloth.
Fuel may deteriorate painted surfac-
es or plastic parts.
EAU00191
NOTE:
If knocking or pinging occurs, use a dif-
ferent brand of gasoline or higher oc-
tane grade.Recommended fuel:
Premium unleaded gasoline
with a research octane
number of 95 or higher.
Fuel tank capacity:
Total:
23 L
Reserve:
4.8 L
1 1
a a b b
1. Starter (choke) “ ”EAU00210
Starter (choke) “ ”
Starting a cold engine requires a richer
air-fuel mixture. A separate starter cir-
cuit supplies this mixture.
Move in direction
a to turn on the
starter (choke).
Move in direction
b to turn off the
starter (choke).
EAU00331
Sidestand/clutch switch
operation check
Check the operation of the sidestand
switch and clutch switch against the in-
formation below.
COPY CD-11ECD-11E
TRANSMISSION IS IN GEAR AND
SIDESTAND IS UP.
PULL IN CLUTCH LEVER AND
PUSH THE START SWITCH.
ENGINE WILL START.
SIDESTAND IS DOWN.
CLUTCH SWITCH IS OK.
TURN THE MAIN SWITCH TO “ON”
AND THE ENGINE STOP SWITCH TO
“”.
CD-11E
EW000045
WARNING
If improper operation is noted, con-
sult a Yamaha dealer immediately.
ENGINE WILL STALL.
SIDESTAND SWITCH IS OK.

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OPERATION AND IMPORTANT RIDING POINTS
OPERATION AND IMPORTANT RIDING POINTS
EAU00373
WARNING
lBefore riding this motorcycle,
become thoroughly familiar
with all operating controls and
their functions. Consult a
Yamaha dealer regarding any
control or function that you do
not thoroughly understand.
lNever start your engine or let it
run for any length of time in a
closed area. The exhaust fumes
are poisonous and can cause
loss of consciousness and
death within a short time. Al-
ways operate your motorcycle
in an area with adequate venti-
lation.
lBefore starting out, always be
sure the sidestand is up. Fail-
ure to retract the sidestand
completely can result in a seri-
ous accident when you try to
turn a corner.
EAU01382*
Starting the engine
NOTE:
This motorcycle is equipped with an ig-
nition circuit cut-off system.
The engine can be started only under
one of the following conditions:
lThe transmission is in neutral.
lThe sidestand is up, the transmis-
sion is in gear and the clutch is
disengaged.
The motorcycle must not be ridden
when the sidestand is down.
EW000054
WARNING
Before going through the following
steps, check the function of the sid-
estand switch and clutch switch.
(Refer to page 1-11.)
COPY CF-28ECF-28E
TURN THE MAIN SWITCH TO “ON” AND THE
ENGINE STOP SWITCH TO “ ”.
IF TRANSMISSION IS IN NEUTRAL AND
SIDESTAND IS DOWN,
PUSH THE START SWITCH.
ENGINE WILL START.
RETRACT SIDESTAND AND PUT
TRANSMISSION IN GEAR.
IF TRANSMISSION IS IN GEAR AND
SIDESTAND IS UP,
PULL IN THE CLUTCH LEVER AND PUSH START
SWITCH. ENGINE WILL START.
MOTORCYCLE CAN BE RIDDEN.MOTORCYCLE CAN BE RIDDEN.

1 - 13
OPERATION AND IMPORTANT RIDING POINTS
1. Turn the main switch to “ON” and
the engine stop switch to “ ”.
ECA00005
CAUTION:
The warning light and fuel indicator
light should come on for a few sec-
onds and then go off. If an indicator
light does not go off, refer to the cor-
responding indicator light circuit
check in the “INSTRUMENT AND
CONTROL FUNCTIONS” section.
2. Shift the transmission into neutral.
NOTE:
When the transmission is in neutral, the
neutral indicator light should be on. If
the light does not come on, ask a
Yamaha dealer to inspect it.
3. Turn on the starter (choke) and
completely close the throttle grip.
4. Start the engine by pushing the
start switch.
NOTE:
If the engine fails to start, release the
start switch, wait a few seconds, then
try again. Each attempt should be as
short as possible to preserve the bat-
tery. Do not crank the engine more
than 10 seconds on any one attempt.5. After starting the engine, move
the starter (choke) to the halfway
position.
NOTE:
For maximum engine life, never accel-
erate hard with a cold engine!
6. After the engine is warm, turn off
the starter (choke) completely.
NOTE:
The engine is warm when it responds
normally to the throttle with the starter
(choke) turned off.
EAU01258
Starting a warm engine
The starter (choke) is not required
when the engine is warm.
EC000046
CAUTION:
See the “Engine break-in” section
prior to operating the motorcycle for
the first time.
1 16
65
5
4 4
3 3
N N2 2
1 1
1. Shift pedal
N. Neutral
EAU00423
Shifting
The transmission lets you control the
amount of power you have available at
a given speed for starting, accelerating,
climbing hills, etc. The use of the shift
pedal is shown in the illustration.
To shift into neutral, depress the shift
pedal repeatedly until it reaches the
end of its travel, then raise the pedal
slightly.
EC000048
CAUTION:
lDo not coast for long periods
with the engine off, and do not
tow the motorcycle a long dis-
tance. Even with gears in neu-
tral, the transmission is only
properly lubricated when the
engine is running. Inadequate
lubrication may damage the
transmission.
lAlways use the clutch when
changing gears. The engine,
transmission, and driveline are
not designed to withstand the
shock of forced shifting and
can be damaged by shifting
without using the clutch.

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CONSUMER INFORMATION/
TROUBLESHOOTING CHART
1. Model labelEAU01049
Model label
The model label is affixed to the loca-
tion shown in the figure. Record the in-
formation on this label in the space
provided. This information will be need-
ed to order spare parts from your
Yamaha dealer.
1 1
TROUBLESHOOTING
TROUBLESHOOTING CHARTEW000125
WARNING
Never check the fuel system while smoking or in the vicinity of an open flame.
Check if there is fuel
in the fuel tank.
1. FuelEnough fuel.
No fuel.Go to compression check.
Supply fuel.
Use electric starter.
2. CompressionThere is compression.
No compression.Go to ignition check.
Ask a Yamaha dealer to
inspect.
Remove spark
plugs and
check electrodes.
3. IgnitionWet.
Dry.Wipe clean with dry cloth and correct
spark gap or replace spark plugs.
Ask a Yamaha dealer to inspect.
Engine doesn’t start, go to battery
check.
Open throttle half-way and start
the engine.
Use electric starter.
4. BatteryEngine turns over
quickly.
Engine turns over
slowly.Battery good.
Check connections or
recharge.
Engine doesn’t start, ask a Yamaha
dealer to inspect.
Engine doesn’t start, go to compression check.

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TROUBLESHOOTING CHART
5. Engine overheatingEW000070
WARNING
Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be blown out
under pressure, which could cause serious injury. Open the radiator cap as follows. Wait until the engine has
cooled. Remove the radiator cap stopper by removing the screw. Place a thick rag like a towel over the radiator cap
and slowly rotate the cap counterclockwise to the detent. This procedure allows any residual pressure to escape.
When the hissing sound has stopped, press down on the cap while turning counterclockwise and remove it.
NOTE:
If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is changed to the recom-
mended coolant as soon as possible.
Wait until the
engine has cooled.Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.
Level is low, check the
cooling system for leakage.
No
leakage.
Leakage.Ask a Yamaha dealer to inspect
and repair the cooling system.
Add coolant. (See NOTE.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and repair the cooling system.

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SPECIAL TOOLS
Compression
gauge
90890-03081
Adapter
90890-04136Compression gauge
Adapter
These tools are used to measure engine
compression.
90890-03112Pocket tester
This tool is used to check the electrical
system.
Pressure
gauge
90890-03153
Adapter
90890-03151Pressure gauge
Adapter
These tools are used to measure the fuel
pressure.
90890-03149Test coupler adapter
This tool is used to check the electrical
control system.
90890-03171Co, diagnosis switch box
This tool is used to check the electrical
control system.
Valve spring com-
pressor
90890-04019
Attachment
90890-04108
90890-04114
Valve spring compressor
Attachment
These tools are used to remove or install
the valve assemblies.
Middle driven shaft
bearing driver
90890-04058
Mechanical seal
installer
90890-04078
Middle driven shaft bearing driver
Mechanical seal installer
These tools are used to install the water
pump seal.
90890-04086Clutch holding tool
This tool is used to hold the clutch boss
when removing or installing the clutch
boss nut.
90890-04111Valve guide remover
This tool is used to remove or install the
valve guides.
Tool No. Tool name/Function Illustration
MODEUP
YES/ON
DOWN
NO/OFF

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SPECIAL TOOLS
90890-04112Valve guide installer
This tool is used to install the valve
guides.
90890-04113Valve guide reamer
This tool is used to rebore the new valve
guides.
90890-06754Ignition checker
This tool is used to check the ignition sys-
tem components.
90890-06756Mity vac
This tool is used to measure the vacuum
pressure.
90890-06760Engine tachometer
This tool is used to check engine speed.
90890-85505Yamaha bond No. 1215
This bond is used to seal two mating sur-
faces (e.g., crankcase mating surfaces).
Tool No. Tool name/Function Illustration

2 - 18
SPEC
ENGINE TIGHTENING TORQUES
Item Fastener Thread size Q’tyTightening torque
Remarks
Nm m·kgf ft·lb
Spark plugs – M10 4 13 1.3 9.4
Cylinder head Nut M10 8 50 5.0 36
E
Cylinder head Cap nut M10 2 50 5.0 36E
Cylinder head Bolt M6 2 12 1.2 8.7
Camshaft caps Bolt M6 28 10 1.0 7.2
E
Cylinder head cover Bolt M6 6 12 1.2 8.7
Oil passage check bolt Bolt M8 1 20 2.0 14
Cap bolt (timing chain tensioner) Bolt M6 1 10 1.0 7.2
Camshaft sprocket Bolt M7 4 24 2.4 17
Generator rotor Bolt M10 1 65 6.5 47
E
Pickup coil rotor Bolt M10 1 45 4.5 32E
Water pump inlet pipe Bolt M6 1 10 1.0 7.2LT
Water pump outlet pipe Bolt M6 1 10 1.0 7.2LT
Oil/water pump assembly
driven sprocketBolt M6 1 15 1.5 11LT
Oil pump Bolt M6 1 12 1.2 8.7
Oil cooler Bolt M20 1 63 6.3 45
E
Engine oil drain bolt – M14 1 43 4.3 31
Oil strainer housing Bolt M6 2 10 1.0 7.2
LT
Oil/water pump assembly
driven sprocket coverBolt M6 1 12 1.2 8.7LT
Oil delivery pipe Bolt M6 1 10 1.0 7.2LT
Oil filter bolt Bolt M20 1 70 7.0 50
Oil filter cartridge – M20 1 17 1.7 12
E
Exhaust pipe joints Bolt M8 8 20 2.0 14
Exhaust pipe Bolt M8 1 20 2.0 14
Exhaust pipe bracket Bolt M8 1 24 2.4 17
Exhaust pipe emission check
boltsBolt M6 4 10 1.0 7.2
Muffler clamp Bolt M8 1 20 2.0 14
Muffler Bolt M10 1 38 3.8 27
Muffler bracket Bolt M8 2 28 2.8 20
Crankcase (cylinder head) Stud bolt M10 10 10 1.0 7.2
E
Crankcase Bolt M9 10 32 3.2 23E
Crankcase Bolt M6 2 14 1.4 10E
Crankcase Bolt M6 14 12 1.2 8.7E
Crankcase Bolt M8 2 24 2.4 17E
Generator rotor cover Bolt M6 9 12 1.2 8.7
Clutch cover Bolt M6 9 12 1.2 8.7
Pickup coil rotor cover Bolt M6 7 12 1.2 8.7
TIGHTENING TORQUES