2001 YAMAHA TDM 850 engine overheat

INSTRUMENT AND CONTROL FUNCTIONS
3-2
3
EAU01590
(Parking)
The steering is locked, and the taillight
and auxiliary light are on, but all other
electrical systems are off. The key can
be removed.
The steering must be locked before the
key can be turned to “ ”.
ECA00043
CAUTION:_ Do not use the parking position for
an extended length of time, other-
wise the battery may discharge. _
EAU03034
Indicator and warning lights
EAU03299
Turn signal indicator lights
“”/“”
The corresponding indicator light flash-
es when the turn signal switch is
pushed to the left or right.
EAU00061
Neutral indicator light “ ”
This indicator light comes on when the
transmission is in the neutral position.
EAU00063
High beam indicator light “ ”
This indicator light comes on when the
high beam of the headlight is switched
on.
EAU01707
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.
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. @
1. Left turn signal indicator light “ ”
2. Neutral indicator light “ ”
3. High beam indicator light “ ”
4. Coolant temperature warning light “ ”
5. Right turn signal indicator light “ ”
6. Fuel level warning light “ ”
E_4tx.book Page 2 Wednesday, October 4, 2000 4:28 PM

OPERATION AND IMPORTANT RIDING POINTS
5-4
5
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).
EAU00436
Engine break-in There is never a more important period
in the life of your engine than the period
between 0 and 1,000 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
1,000 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.
EAU00440*
0–150 kml
Avoid prolonged operation above
5,000 r/min.
l
After every hour of operation, stop
the engine, and then let it cool for
five to ten minutes.
l
Vary the engine speed from time
to time. Do not operate the engine
at one set throttle position.
150–500 km
l
Avoid prolonged operation above
6,000 r/min.
l
Rev the engine freely through the
gears, but do not use full throttle at
any time.
500–1,000 km
l
Avoid prolonged full-throttle oper-
ation.
l
Avoid prolonged operation above
7,000 r/min.
E_4tx.book Page 4 Wednesday, October 4, 2000 4:28 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-11
68. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil tank
cap.
EC000072
CAUTION:@ l
In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives with
the oil or use oils of a higher
grade than “CD”. In addition, do
not use oils labeled “ENERGY
CONSERVING II” or higher.
l
Make sure that no foreign mate-
rial enters the crankcase.
@9. Start the engine, and then let it idle
for several minutes while checking
it for oil leakage. If oil is leaking,
immediately turn the engine off
and check for the cause.
10. Turn the engine off, and then
check the oil level and correct it if
necessary.
EAU03495
Coolant The coolant level should be checked
before each ride. In addition, the cool-
ant must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
If the engine overheats, see page 6-45
for further instructions.
To check the coolant level
1. Place the motorcycle on a level
surface and hold it in an upright
position.NOTE:@ l
The coolant level must be checked
on a cold engine since the level
varies with engine temperature.
l
Make sure that the motorcycle is
positioned straight up when
checking the coolant level. A slight
tilt to the side can result in a false
reading.
@
Tightening torques:
Engine oil drain bolt A:
35 Nm (3.5 m·kg)
Engine oil drain bolt B:
30 Nm (3.0 m·kg)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter element
replacement:
3.5 L
With oil filter element
replacement:
3.6 L
Total amount (dry engine):
4.2 L
E_4tx.book Page 11 Wednesday, October 4, 2000 4:28 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
NOTE:@ l
The radiator fan is automatically
switched on or off according to the
coolant temperature in the radia-
tor.
l
If the engine overheats, see page
6-45 for further instructions.
@
EAU03300
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. Place a container under the en-
gine to collect the used coolant.5. Remove the radiator cap retaining
bolt and the radiator cap.
EW000067
WARNING
@ Never attempt to remove the radia-
tor cap when the engine is hot. @1. Radiator cap retaining bolt
2. Radiator cap
E_4tx.book Page 13 Wednesday, October 4, 2000 4:28 PM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-45
6Engine 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_4tx.book Page 45 Wednesday, October 4, 2000 4:28 PM