2000 YAMAHA YZF-R1 engine overheat

INSTRUMENT AND CONTROL FUNCTIONS
3-3
3
EAU03155
Oil level warning light “ ”
This warning light comes on when the
engine oil level is low.
The electrical circuit of the warning light
can be checked according to the fol-
lowing procedure.
1. Set the engine stop switch to “ ”
and turn the key to “ON”.
2. Shift the transmission into the neu-
tral position or pull the clutch lever.3. Push the start switch. If the warn-
ing light does not come on while
pushing the start switch, have a
Yamaha dealer check the electri-
cal circuit.
NOTE:@ l
Even if the oil level is sufficient, the
warning light may flicker when
riding on a slope or during sudden
acceleration or deceleration, but
this is not a malfunction.
l
This model is equipped with a self-
diagnosis device for the oil level
warning light circuit. (See page 3-8
for an explanation of the self-diag-
nosis device.)
@
EAU03156
Coolant temperature warning light
“”
This warning light comes on when the
engine overheats. When this occurs,
stop the engine immediately and allow
the engine to cool.
The electrical circuit of the warning light
can be checked according to the fol-
lowing procedure.
1. Set the engine stop switch to “ ”
and turn the key to “ON”.
2. Shift the transmission into the neu-
tral position or pull the clutch lever.
1. Neutral indicator light “ ”
2. High beam indicator light “ ”
3. Turn signal indicator light “ ”
4. Fuel level warning light “ ”
5. Oil level warning light “ ”
1. Coolant temperature gauge
2. Coolant temperature warning light “ ”
E_5jj_Functions.fm Page 3 Wednesday, February 2, 2000 5:17 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-4
3 3. Push the start switch. If the warn-
ing light does not come on while
pushing the start switch, have a
Yamaha dealer check the electri-
cal circuit.
EC000002
CAUTION:@ Do not operate the engine if it is
overheated. @
E_5jj_Functions.fm Page 4 Wednesday, February 2, 2000 5:17 PM

INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
CB-25E
Coolant
temperatureDisplay Conditions What to do0–39 °CMessage “LO” is
displayed.OK. Go ahead with riding.
40–116 °CTemperature is
displayed.OK. Go ahead with riding.
117–139 °CTemperature flashes.
Warning light comes on.Stop the motorcycle and allow it to
idle until the coolant temperature
goes down.
If the temperature does not go
down, stop the engine. (See the
“Engine overheating” section on
page 6-44 for further instructions.)
Above 140 °CMessage “HI” flashes.
Warning light comes on.Stop the engine and allow it to cool.
(See the “Engine overheating” sec-
tion on page 6-44 for further in-
structions.)
E_5jj_Functions.fm Page 5 Wednesday, February 2, 2000 5:17 PM

OPERATION AND IMPORTANT RIDING POINTS
5-4
5
EAU02937
Recommended shift points
(for Switzerland only)The recommended shift points during
acceleration are shown in the table be-
low.CF-26ENOTE:@ When shifting down two gears at a
time, reduce the speed accordingly
(e.g., down to 35 km/h when shifting
from 5th to 3rd gear). @
EAU00424
Tips for reducing fuel
consumption Fuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:l
Thoroughly warm up the engine.
l
Turn the starter (choke) off as
soon as possible.
l
Shift up swiftly, and avoid high en-
gine speeds during acceleration.
l
Do not rev the engine while shift-
ing down, and avoid high engine
speeds with no load on the engine.
l
Turn the engine off instead of let-
ting it idle for an extended length
of time (e.g., in traffic jams, at traf-
fic lights or at railroad crossings).
EAU01128
Engine break-inThere is never a more important period
in the life of your engine than the period
between 0 and 1,600 km. For this rea-
son, you should read the following ma-
terial carefully.
Since the engine is brand new, do not
put an excessive load on it for the first
1,600 km. The various parts in the en-
gine wear and polish themselves to the
correct operating clearances. During
this period, prolonged full-throttle oper-
ation or any condition that might result
in engine overheating must be avoided.
Shift point
(km/h)
1st®2nd
2nd®3rd
3rd®4th
4th®5th
5th®6th20
30
40
50
60
E_5jj_Operation.fm Page 4 Wednesday, February 2, 2000 5:18 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-12
6 2. Check the coolant level in the
coolant reservoir.
NOTE:@ The coolant should be between the
minimum and maximum level marks. @3. If the coolant is at or below the
minimum level mark, open the res-
ervoir cap, add coolant to the max-
imum level mark, and then close
the reservoir cap.
EC000080
CAUTION:@ l
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.
l
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.
l
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.
@
NOTE:@ l
The radiator fan is automatically
switched on or off according to the
coolant temperature in the radia-
tor.
l
When the engine is idling with the
starter (choke) turned on, the radi-
ator fan will automatically be
switched on and off regardless of
the coolant temperature, but this
does not indicate a malfunction.
l
If the engine overheats, see page
6-44 for further instructions.
@
Coolant reservoir capacity:
0.45 L
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
6 Engine overheating
EW000070
WARNING
@ l
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.
l
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.
@NOTE:@ 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.
E_5jj_Periodic.fm Page 44 Wednesday, February 2, 2000 5:18 PM