2001 YAMAHA YZF-R6 engine overheat

INSTRUMENT AND CONTROL FUNCTIONS
3-3
3
EAU03723*
Oil level/coolant temperature warn-
ing light “ ”
This warning light has the following
three functions.l
When the engine oil level is low,
the warning light comes on and
symbol “ ” flashes. If this oc-
curs, stop the engine immediately
and add engine oil to the specified
level.
l
When the coolant temperature is
too high, the warning light comes
on and symbol “ ” flashes. 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 6-46 for further instruc-
tions.)
l
When the engine oil level is low
and the coolant temperature is too
high, the warning light flashes and
symbols “ ” and “ ” come on.
To check that the warning light is work-
ing properly:
l
Put the transmission in neutral or
apply the clutch lever.
l
Turn the engine stop switch to
“ ” and the key to “ON”.
l
The warning light will come on and
symbols “ ” and “ ” will ap-
pear in the display.
If the warning light does not come on,
have a Yamaha dealer inspect the
electrical circuit.
EC000118
CAUTION:_ l
Do not operate the motorcycle
until you know that the engine
oil level is sufficient.
l
Do not operate the engine if it is
overheated.
_NOTE:_ Even if the oil is filled to the specified
level, the warning light may flicker
when riding on a slope or during sud-
den acceleration or deceleration, but
this is normal. _
1. Oil level symbol “ ”
2. Oil level/coolant temperature
warning light “ ”
3. Coolant temperature symbol “ ”E_5mt_Functions.fm Page 3 Thursday, September 21, 2000 10:27 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-4
3
CB-19E
Coolant
temperatureDisplay Conditions What to do0–40 °CSymbol and message
“LO” are displayed.OK. Go ahead with riding.
41–117 °CSymbol and temperature
are displayed.OK. Go ahead with riding.
118–140 °CSymbol and temperature
flash.
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 6-46 for further instructions.)
Above 140 °CSymbol and message
“HI” flash.
Warning light comes on.Stop the engine and allow it to cool.
(See the “Engine overheating”
section on page 6-46 for further
instructions.)
˚C˚C˚C˚C
E_5mt.book Page 4 Monday, September 18, 2000 9:08 AM

OPERATION AND IMPORTANT RIDING POINTS
5-4
5
EAU01128
Engine break-in There 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.
EAU01329*
0–1,000 km
Avoid prolonged operation above
5,000 r/min.
1,000–1,600 km
Avoid prolonged operation above
6,000 r/min.
EC000052*
CAUTION:@ After 1,000 km of operation, the en-
gine oil must be changed and the oil
filter cartridge replaced. @1,600 km and beyond
The vehicle can now be operated
normally.
EC000053
CAUTION:@ l
Keep the engine speed out of
the tachometer red zone.
l
If any engine trouble should oc-
cur during the engine break-in
period, immediately have a
Yamaha dealer check the
vehicle.
@
EAU00460
Parking When parking, stop the engine, and
then remove the key from the main
switch.
EW000058
WARNING
@ l
Since the engine and exhaust
system can become very hot,
park in a place where pedestri-
ans or children are not likely to
touch them.
l
Do not park on a slope or on
soft ground, otherwise the
motorcycle may overturn.
@
E_5mt.book Page 4 Monday, September 18, 2000 9:08 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
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, remove the
coolant reservoir cover by remov-
ing the bolts, open the reservoir
cap, add coolant to the maximum
level mark, close the reservoir
cap, and then install the reservoir
cover and bolts.
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.
@
EW000067
WARNING
@ Never attempt to remove the radia-
tor cap when the engine is hot. @NOTE:@ The radiator fan is automatically
switched on or off according to the
coolant temperature in the radiator. If
the engine overheats, see page 6-46
for further instructions. @
1. Bolt (´ 2)Left side
Coolant reservoir capacity:
0.44 L
E_5mt.book Page 14 Monday, September 18, 2000 9:08 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-46
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.
@aNOTE:@ 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_5mt.book Page 46 Monday, September 18, 2000 9:08 AM