2002 YAMAHA YZF-R1 engine coolant

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6 5. Remove the clutch cable holder
from the coolant reservoir as
shown.
6. Remove the coolant reservoir by
removing the bolts, and then turn
the coolant reservoir upside down
to empty it.
7. Install the coolant reservoir by in-
stalling the bolts, and then install
the clutch cable holder.8. Remove the coolant drain bolt to
drain the cooling system.
9. Loosen the radiator hose clamp
screw located at the left side of the
engine, and then pull off the hose
to drain the radiator.10. After the coolant is completely
drained, thoroughly flush the cool-
ing system with clean tap water.
11. Install the coolant drain bolt, and
then tighten it to the specified
torque.
NOTE:_ Check the washer for damage and re-
place it if necessary. _12. Connect the radiator hose, and
then tighten the clamp screw.
1. Bolt (× 2)
2. Coolant reservoir
3. Clutch cable holder
1. Coolant drain bolt
2. Clamp screw
Tightening torque:
Coolant drain bolt:
10 Nm (1.0 m·kgf)
U5PWE0.book Page 14 Friday, December 7, 2001 5:14 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
613. Pour the specified amount of rec-
ommended coolant into the radia-
tor and reservoir.
EC000080
CAUTION:_

If coolant is not available, use
distilled water or soft tap water
instead. Do not use hard water
or salt water since it is harmful
to the engine.


If water has been used instead
of coolant, replace it with cool-
ant as soon as possible, other-
wise the engine may not be
sufficiently cooled and the cool-
ing system will not be protected
against frost and corrosion.


If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possible,
otherwise the effectiveness of
the coolant will be reduced.
_
14. Install the radiator cap and the
coolant reservoir cap, and then
start the engine and let it idle for
several minutes. During this peri-
od, rev the engine two or three
times between 3,000–5,000 r/min,
and then turn it off.
15. Remove the radiator cap to check
the coolant level in the radiator. If
necessary, add sufficient coolant
until it reaches the top of the radia-
tor, and then install the radiator
cap.
16. Check the coolant level in the res-
ervoir. If necessary, remove the
coolant reservoir cap, add coolant
to the maximum level mark, and
then install the cap.
17. Start the engine, and then check
the vehicle for coolant leakage. If
coolant is leaking, have a Yamaha
dealer check the cooling system.
18. Install the cowlings and the panel. Antifreeze/water mixture ratio:
1:1
Recommended antifreeze:
High-quality ethylene glycol
antifreeze containing corrosion
inhibitors for aluminum engines
Coolant quantity:
Total amount:
2.45 L
Coolant reservoir capacity:
0.24 L
U5PWE0.book Page 15 Friday, December 7, 2001 5:14 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-46
6 Engine overheating
EW000070
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. Be sure to wait until the engine has cooled.


After removing the radiator cap retaining bolt, place a thick rag, like a towel, over the radiator cap, and then
slowly rotate the cap counterclockwise to the detent to allow any residual pressure to escape. When the hiss-
ing sound has stopped, press down on the cap while turning it counterclockwise, and then remove the cap.
_CT-2AENOTE:_ If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the recommended coolant
as soon as possible. _
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer checkand repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again,
have a
Yamaha dealer check
and repair the cooling system.
There is
leakage.
There is
no leakage.
U5PWE0.book Page 46 Friday, December 7, 2001 5:14 PM

INDEXAAir filter element, replacing ..................... 6-16
Anti-theft alarm ...................................... 3-11BBattery ................................................... 6-33
Brake and clutch levers,
checking and lubricating ...................... 6-30
Brake fluid, changing ............................. 6-27
Brake fluid level, checking...................... 6-26
Brake lever............................................. 3-13
Brake light switch (rear), adjusting ......... 6-24
Brake pads, checking............................. 6-25
Brake pedal............................................ 3-14
Brake pedal, lubricating.......................... 6-31
Brake pedal position, adjusting .............. 6-24CCables, checking and lubricating............ 6-29
Care.........................................................7-1
Catalytic converter ................................. 3-16
Clutch lever ............................................ 3-13
Clutch lever free play, adjusting ............. 6-23
Conversion table ......................................8-5
Coolant .................................................. 6-12
Changing .......................................... 6-13
Checking .......................................... 6-12
Coolant temperature warning light............3-4
Cowlings and panels,
removing and installing ..........................6-5
DDimmer switch ....................................... 3-11
Drive chain, lubricating .......................... 6-29
Drive chain slack ................................... 6-27
Adjusting .......................................... 6-28
Checking .......................................... 6-27EEngine break-in ....................................... 5-3
Engine oil and oil filter cartridge ............... 6-9
Engine speed indicator light..................... 3-4
Engine stop switch................................. 3-12
Engine trouble warning light .................... 3-3
EXUP system ........................................ 3-24FFront fork, adjusting ............................... 3-19
Front fork, checking ............................... 6-31
Fuel ....................................................... 3-15
Fuel consumption, tips for reducing ......... 5-3
Fuel level warning light ............................ 3-2
Fuel tank breather hose ......................... 3-16
Fuel tank cap ......................................... 3-14
Fuses, replacing .................................... 6-35HHandlebar switches ............................... 3-11
Headlight bulb, replacing ....................... 6-36
Helmet holders ...................................... 3-18
High beam indicator light ......................... 3-3
Horn switch ........................................... 3-12
IIdentification numbers ..............................9-1
Idling speed, adjusting ...........................6-18
Ignition circuit cut-off system ..................3-25
Indicator and warning lights......................3-2KKey identification number .........................9-1LLicense plate light bulb, replacing...........6-38
Light switch .............................................. 3-12
Luggage strap holders ...........................3-23MMain switch/steering lock .........................3-1
Model label ..............................................9-2
Multi-function display................................3-6NNeutral indicator light ...............................3-3OOil level warning light ...............................3-3PParking.....................................................5-4
Part locations ...........................................2-1
Pass switch ............................................3-11
Periodic maintenance and lubrication
chart ......................................................6-2
Pre-operation check list ............................4-1
U5PWE0.book Page 1 Friday, December 7, 2001 5:14 PM