engine YAMAHA YZF-R1SC 2004 Owner's Guide

2-39
E Clamp the clamp upper end
along the line of lower end of the
hose clamp assembly. Point the
tip of the clamp (surplus section)
to the front side of the vehicle.
Clutch cable is what the clamp
fastens.
F The clutch cable doesn’t project
outside the water hose and the
cylinder head in the box part in
the figure.
G To the engine
H Clamp behind the bracket 3.17Throttle body lead
A Clamp it after passing between
the frame and radiator stay.
Point the tip of the clamp (exces-
sive part) to the front side of the
vehicle. Fasten the right handle-
bar switch lead with a clamp.
B To the wire harness
C The clutch cable positioning
guide should be above the upper
end of the clamp. Fasten the
clutch cable with a clamp. (Refer
to )
D Position relation between the
clamp and guide.
M
CABLE ROUTINGSPEC
1Wire harness
2Crankshaft position sensor lead
3Heat protector
4Right handlebar switch lead
5Positioning guide
6Rear brake light switch lead
7Coolant reservoir tank
8Speed sensor lead
9Clutch cable
10Radiator
11Oil cooler outlet hose
12Coolant reservoir tank drain
hose
13Breather pipe
14Fuel tank drain hose
15A.C. magneto lead
16Wire harness
ProCarManuals.com

2-44
K Pass the water hose lower side
of the thermostat, and between
the ground lead and the neutral
switch.
L Install the leads so that the en-
gine ground lead is positioned
lower and the battery negative
lead to be upper. Install the pro-
trusion of each lead to be above
the vehicle.
M Route the crankshaft position
sensor lead under the wire har-
ness.
N To the fuel pump
O Clamp the wire harness winding
in and insert it to the frame hole.A Pass the wire harness through
the clamp inserted to the radiator
stay.
B To the headlight lead
C Clamp the lead between three
protrusions of the pipe (the first
and second parts from the ve-
hicle front). Point the tip of the
clamp (excessive part) to the in-
side of the vehicle.
D To the vehicle right side diagram
E To the engine
F Clamp the lead between three
protrusions of the pipe (the in-
side and outside of the vehicle).G Point the tip of the clamp (exces-
sive part) to the inside of the ve-
hicle.
H All hoses and leads should be
routed over the vehicle’s upper
side above the heat protector.
I To the starter motor
J Fasten the wire harness, clank
shaft position sensor lead, rear
brake light switch lead and
speed sensor lead with a clamp.
Then, point the tip of the clamp
(cut the tip of the clamp leaving 2
to 4 mm (0.08 to 0.16 in).) to the
inside of the vehicle.
CABLE ROUTINGSPEC
ProCarManuals.com

3-1
3
INTRODUCTION / PERIODIC MAINTENANCE CHART FOR THE EMISSION
CONTROL SYSTEM / GENERAL MAINTENANCE AND LUBRICATION CHARTCHK
ADJ
EAS00036
PERIODIC CHECKS AND ADJUSTMENTS
INTRODUCTION
This chapter includes all information necessary to perform recommended checks and adjustments. If
followed, these preventive maintenance procedures will ensure more reliable vehicle operation, a
longer service life and reduce the need for costly overhaul work. This information applies to vehicles
already in service as well as to new vehicles that are being prepared for sale, All service technicians
should be familiar with this entire chapter.
PERIODIC MAINTENANCE CHART FOR THE EMISSION CONTROL SYSTEM
INITIALODOMETER READINGS
No.ITEMROUTINE600 mi
(1000 km)
or
1 month4000 mi
(7000 km)
or
6 months8000 mi
(13000 km)
or
12 months12000 mi
(19000 km)
or
18 months16000 mi
(25000 km)
or
24 months20000 mi
(31000 km)
or
30 months
1*Fuel line
(See page 3-33)
Check fuel hoses for cracks or damage.

Replace if necessary.





2*Spark plugs
(See page 3-23)
Check Condition.

Adjust gap and clean.

Replace every 8000 mi (13000 km) or 12
months.
Replace.
Replace.

3*Valve clearance
(See page 3-11)
Check and adjust valve clearance when en-
gine is cold.Every 26600 mi (42000 km)
4*Crankcase breather
system
(See page 3-34)
Check breather hose for cracks or damage.

Replace if necessary.





5*Electronic fuel injection
(See page 3-17, 21)
Check and adjust engine idle speed and syn-
chronization.






6*Exhaust system
(See page 3-35)
Check for leakage.

Tighten if necessary.

Replace gasket(s) if necessary.





7*Evaporative emission
control system
(For California only)
Check control system for damage.

Replace if necessary.


8*Air induction system
(See page 7-46)
Check the air cut-off valve, reed valve, and
hose for damage.

Replace any damaged parts if necessary.


GENERAL MAINTENANCE AND LUBRICATION CHART
INITIALODOMETER READINGS
No.ITEMROUTINE600 mi
(1000 km)
or
1 month4000 mi
(7000 km)
or
6 months8000 mi
(13000 km)
or
12 months12000 mi
(19000 km)
or
18 months16000 mi
(25000 km)
or
24 months20000 mi
(31000 km)
or
30 months
1*Air filter element
(See page 3-32)
Check condition and damage.
Replace if necessary.





2*Clutch
(See page 3-31)
Check operation.
Adjust or replace cable.






3*Front brake
(See page 3-42, 44, 45)
Check operation, fluid level, and for fluid leak-
age.

Replace brake pads if necessary.






4*Rear brake
(See page 3-43, 44, 45)
Check operation, fluid level, and for fluid leak-
age.

Replace brake pads if necessary.






5*Brake hoses
Check for cracks or damage.




5*Brake hoses(See page 3-46)
Replace.Every 4 years
6*Wheels
(See page 4-3)
Check runout and for damage.
Replace if necessary.





7*Tires
(See page 3-58)
Check tread depth and for damage.
Replace if necessary.
Check air pressure.
Correct if necessary.






8*Wheel bearings
(See page 4-3)
Check bearings for smooth operation.
Replace if necessary.





ProCarManuals.com

3-2
NOTE:
GENERAL MAINTENANCE AND LUBRICATION CHART
CHK
ADJ
NOTE:
INITIALODOMETER READINGS
No.ITEMROUTINE600 mi
(1000 km)
or
1 month4000 mi
(7000 km)
or
6 months8000 mi
(13000 km)
or
12 months12000 mi
(19000 km)
or
18 months16000 mi
(25000 km)
or
24 months20000 mi
(31000 km)
or
30 months
9*Swingarm pivot
bearings
(See page 4-71)
Check bearing assemblies for looseness.
Moderately repack with lithium-soap-based
grease.
Repack.
10Drive chain
(See page 3-49, 50)
Check chain slack/alignment and condition.
Adjust and lubricate chain with a special O-
ring chain lubricant thoroughly.Every 600 mi (800 km) and after washing the motorcycle or riding in the rain
11*Steering bearings
(See page 3-51)
Check bearing assembly for looseness.
Moderately repack with lithium-soap-based
grease every 16000 mi (25000 km) or 24
months.



Repack.

12*Steering damper
(See page 4-60)
Check operation and for oil leakage.





13*Chassis fasteners
(See page 2-23)
Check all chassis fitting and fasteners.
Correct if necessary.





14Brake and clutch
lever pivot shafts
(See page 3-61)
Apply lithium-soap-based grease (all-purpose
grease) lightly.





15Sidestand pivot(See page 3-61)

Check operation.

Apply lithium-soap-based grease (all-pur-
pose grease) lightly.





16*Sidestand switch
(See page 3-61, 8-4)
Check operation and replace if necessary.






17*Front fork
(See page 3-53)
Check operation and for oil leakage.
Replace if necessary.





18*Shock absorber
assembly
(See page 3-56, 4-67)
Check operation and for oil leakage.
Replace if necessary.





19*Rear suspension
link pivots
(See page 4-71)
Check operation.
Correct if necessary.


20Engine oil
(See page 3-26, 28)
Change (warm engine before draining.)






21*Engine oil filter cartridge
(See page 3-28)
Replace.



22*Cooling system

Check hoses for cracks or damage.
Replace if necessary.





22*Cooling system(See page 3-37, 38, 39)
Change with ethylene glycol antifreeze cool-
ant every 24 months.Change.
23*EXUP system
(See page 3-36)
Check operation, cable free play and pulley
position.
Every 12000 mi (19000 km)
24*Control cables
(See page 3-61)
Apply Yamaha chain and cable lube or en-
gine oil SAE 10W-30 thoroughly.






25*Throttle grip housing
and cable
(See page 3-22)
Check operation and free play.
Adjust the throttle cable free play if necessary.
Lubricate the throttle grip housing and cable.





* Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
From 24000 mi (37000 km) or 36 months, repeat the maintenance intervals starting from 8000 mi
(13000 km) or 12 months.
Air filter

This model’s air filter is equipped with a disposable oil-coated paper element, which must not be
cleaned with compressed air to avoid damaging it.

The air filter element needs to be replaced more frequently when riding in unusually wet or dusty areas.
Hydraulic brake service

After disassembling the brake master cylinders and calipers, always change the fluid. Regularly
check the brake fluid levels and fill the reservoirs as required.

Every two years replace the internal components of the brake master cylinders and calipers, and
change the brake fluid.

Replace the brake hoses every four years and if cracked or damaged.
ProCarManuals.com

3-11
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:
EAS00045
ENGINE
ADJUSTING THE VALVE CLEARANCE
The following procedure applies to all of the
valves.

Valve clearance adjustment should be made
on a cold engine, at room temperature.

When the valve clearance is to be measured or
adjusted, the piston must be at top dead center
(TDC) on the compression stroke.
1. Remove

rider seat
Refer to “SEATS”.

fuel tank
Refer to “FUEL TANK”.

air filter case
Refer to “AIR FILTER CASE”.

bottom cowlings

side cowlings
Refer to “COWLINGS”.

throttle body assembly
Refer to “THROTTLE BODIES” in chapter 7.

air cut-off valve
Refer to “AIR INDUCTION SYSTEM” in
chapter 7.

radiator

radiator fan motor
Refer to “RADIATOR” in chapter 6.
2. Remove

ignition coils

spark plugs

cylinder head cover

cylinder head cover gasket
Refer to “CAMSHAFT” in chapter 5.
3. Remove

pickup rotor cover
1
ProCarManuals.com

3-13
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:
NOTE:
NOTE: 5. Remove:

camshafts

Refer to “DISASSEMBLING THE ENGINE –
CAMSHAFT AND CYLINDER HEAD” in chap-
ter 5.

When removing the timing chain and cam-
shafts, fasten the timing chain with a wire to re-
trieve it if it falls into the crankcase.
6. Adjust:

valve clearance
a. Remove the valve lifter
1 and the valve pad
2 with a valve lapper 3.
Valve lapper
90890-04101

Cover the timing chain opening with a rag to
prevent the valve pad from falling into the
crankcase.

Make a note of the position of each valve lifter
2 and valve pad 1 so that they can be
installed in the correct place.
b. Select the proper valve pad from the follow-
ing table.
Valve pad
thickness range
Available valve
pads
Nos.
120 
2401.20
(0.0472) 
2.40 mm
(0.0945 in)25 thicknesses in
0.05 mm (0.002 in)
increments

The thickness a of each valve pad is marked
in hundredths of millimeters on the side that
touches the valve lifter.

Since valve pads of various sizes are originally
installed, the valve pad number must be
rounded in order to reach the closest equiva-
lent to the original.
ProCarManuals.com

3-15
ADJUSTING THE VALVE CLEARANCE
CHK
ADJ
NOTE:

Refer to “ASSEMBLING AND ADJUSTING
THE ENGINE – CYLINDER HEAD AND CAM-
SHAFT” in chapter 5.

Lubricate the camshaft bearings, camshaft
lobes and camshaft journals.

First, install the exhaust camshaft.

Align the camshaft marks with the camshaft
cap marks.

Turn the crankshaft counterclockwise several
full turns to seat the parts.
g. Measure the valve clearance again.
h. If the valve clearance is still out of specifica-
tion, repeat all of the valve clearance adjust-
ment steps until the specified clearance is
obtained.
ProCarManuals.com

3-17
ADJUSTING THE VALVE CLEARANCE /
SYNCHRONIZING THE THROTTLE BODIESCHK
ADJ
NOTE:
NOTE:
NOTE:
7. Install:

all removed parts
For installation, reverse the removal procedure.
SYNCHRONIZING THE THROTTLE BODIES
Prior to synchronizing the throttle bodies, the
valve clearance and the engine idling speed
should be properly adjusted and the ignition tim-
ing should be checked.
1. Stand the motorcycle on a level surface.
Place the motorcycle on a suitable stand.
2. Remove:

rider seat
Refer to “SEATS”.

fuel tank
Refer to “FUEL TANK”.
3. Remove:

synchronizing hoses
1
4. Install:

vacuum gauge
1
(onto the synchronizing hose)

digital tachometer
(near the spark plug)
Vacuum gauge
90890-03094, YU-08030
ProCarManuals.com

3-18
SYNCHRONIZING THE THROTTLE BODIES
CHK
ADJ
NOTE:
CAUTION:
NOTE: 5. Install:

fuel tank
Refer to “FUEL TANK”.
6. Start the engine and let it warm up for several
minutes.
7. Measure:

engine idling speed
Out of specification
Adjust.
Refer to “ADJUSTING THE ENGINE IDLING
SPEED”.
Engine idling speed
1,150  1,250 r / min
8. Adjust:

throttle body synchronization
a. With throttle body #3 as standard, adjust
throttle bodies #1, #2, and #4 using the air
screws
1.

After each step, rev the engine two or three
times, each time for less than a second, and
check the synchronization again.

If the air screw is removed, turn the screw 3 / 4
turn in and be sure to synchronize the throttle
body.
Do not use the throttle valve adjusting
screws to adjust the throttle body synchro-
nization.
Vacuum pressure at engine
idling speed
22 kPa
(165 mmHg, 6.5 inHg)
The difference in vacuum pressure between
two throttle bodies should not exceed 1.33 kPa
(10 mmHg, 0.39 inHg).
ProCarManuals.com

3-19
SYNCHRONIZING THE THROTTLE BODIES /
ADJUSTING THE EXHAUST GAS VOLUMECHK
ADJ
NOTE:
NOTE: 9. Measure:

engine idling speed
Out of specification
Adjust.
Make sure that the vacuum pressure is within
specification.
10. Stop the engine and remove the measuring
equipment.
11. Adjust:

throttle cable free play
Refer to “ADJUSTING THE THROTTLE
CABLE FREE PLAY”.
Throttle cable free play
(at the flange of the throttle grip)
3  5 mm (0.12  0.20 in)
13. Install:

synchronizing hoses

fuel tank
Refer to “FUEL TANK”.

rider seat
Refer to “SEATS”.
ADJUSTING THE EXHAUST GAS VOLUME
Be sure to set the carbon monoxide density to
standard, and then adjust the exhaust gas.
1. Turn the main switch to “OFF” and engine
stop switch “ON”.
2. While keeping the “SELECT” and “RESET”
buttons pressed simultaneously, turn “ON”
the main switch (keep them pressed for 8 se-
conds or more).
All indications on the meter disappear except
the clock and trip indications.
Letters “dIAG” appear on the clock LCD.
ProCarManuals.com