2002 YAMAHA TDM 900 engine overheat

INSTRUMENT AND CONTROL FUNCTIONS
3-5
3
EAU04488
Tachometer unit The electric tachometer allows the rider
to monitor the engine speed and keep it
within the ideal power range.
EC000003
CAUTION:_ Do not operate the engine in the ta-
chometer red zone.
Red zone: 8,000 r/min and above _This tachometer unit is equipped with a
clock.To set the clock:
1. Push both the “SELECT” and
“RESET” buttons for at least two
seconds.
2. When the hour digits start flashing,
push the “RESET” button to set
the hours.
3. Push the “SELECT” button to
change the minutes.
4. When the minute digits start flash-
ing, push the “RESET” button to
set the minutes.
5. Push the “SELECT” button to start
the clock.
NOTE:_

After setting the clock, be sure to
push the “SELECT” button before
turning the key to “OFF”, other-
wise the clock will not be set.


When the key is turned to “OFF”,
the clock display will remain on for
48 hours and then go off to pre-
vent the battery from discharging.
_
EAU01652
Coolant temperature gauge With the key in the “ON” position, the
coolant temperature gauge indicates
the temperature of the coolant. The
coolant temperature varies with chang-
es in the weather and engine load. If
the needle reaches or enters the red
zone, stop the motorcycle and let the
engine cool. (See page 6-44 for further
instructions.)
EC000002
CAUTION:_ Do not operate the engine if it is
overheated. _
1. Tachometer
2. Tachometer red zone
3. Clock
1. Coolant temperature gauge
2. Coolant temperature red zone
U5PSE0.book Page 5 Thursday, December 13, 2001 4:29 PM

OPERATION AND IMPORTANT RIDING POINTS
5-4
5
EAU03952
Tips for reducing fuel
consumption Fuel consumption depends largely on
your riding style. Consider the following
tips to reduce fuel consumption:

Thoroughly warm up the engine.


Shift up swiftly, and avoid high en-
gine speeds during acceleration.


Do not rev the engine while shift-
ing down, and avoid high engine
speeds with no load on the engine.


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-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.
EAU04315
0–1,000 km
Avoid prolonged operation above
4,000 r/min.
1,000–1,600 km
Avoid prolonged operation above
6,000 r/min.
ECA00058
CAUTION:_ After 1,000 km of operation, the en-
gine oil must be changed, and the
oil filter element replaced. _1,600 km and beyond
The vehicle can now be operated nor-
mally.
EC000053
CAUTION:_

Keep the engine speed out of
the tachometer red zone.


If any engine trouble should oc-
cur during the engine break-in
period, immediately have a
Yamaha dealer check the vehi-
cle.
_
U5PSE0.book Page 4 Thursday, December 13, 2001 4:29 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
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.
_
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 radia-
tor.


If the engine overheats, see page
6-44 for further instructions.
_
EAU04461
To change the coolant
1. Place the motorcycle on a level
surface and let the engine cool if
necessary.
2. Remove the seat. (See page 3-11
for seat removal and installation
procedures.)
3. Remove cowling B and panel B.
(See pages 6-5 and 6-6 for cowl-
ing and panel removal and instal-
lation procedures.)
4. Remove the fuel tank bolts, and
then lift the fuel tank to position it
away from the coolant reservoir.
(Do not disconnect the fuel hos-
es!)
5. Place a container under the en-
gine to collect the used coolant.
U5PSE0.book Page 13 Thursday, December 13, 2001 4:29 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-44
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.
U5PSE0.book Page 44 Thursday, December 13, 2001 4:29 PM