maintenance YAMAHA TDM 900 2003 User Guide

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PERIODIC MAINTENANCE AND MINOR REPAIR
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EAU01880
Checking the spark plugsSpark plugs, checkingThe spark plugs are important engine
components, which should be
checked periodically, preferably by a
Yamaha dealer. Since heat and
deposits will cause any spark plug to
slowly erode, they should be
removed and checked in accordance
with the periodic maintenance and
lubrication chart. In addition, the con-
dition of the spark plugs can reveal
the condition of the engine.
The porcelain insulator around the
center electrode of each spark plug
should be a medium-to-light tan (the
ideal color when the motorcycle is rid-
den normally), and all spark plugs
installed in the engine should have
the same color. If any spark plug
shows a distinctly different color, the
engine could be defective. Do not
attempt to diagnose such problems
yourself. Instead, have a Yamaha
dealer check the motorcycle.Clean the surface of the spark plug
gasket and its mating surface, and
then wipe off any grime from the
spark plug threads.
a. Spark plug gap
If a spark plug shows signs of elec-
trode erosion and excessive carbon
or other deposits, it should be
replaced.
Before installing a spark plug, the
spark plug gap should be measured
with a wire thickness gauge and, if
necessary, adjusted to specification.
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kgf)
Specified spark plug:
DPR8EA-9 (NGK) or
X24EPR-U9 (DENSO)
Spark plug gap:
0.8–0.9 mm
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NOTE:
If a torque wrench is not available
when installing a spark plug, a good
estimate of the correct torque is
1/4–1/2 turn past finger tight.
However, the spark plug should be
tightened to the specified torque as
soon as possible.
3. Wait a few minutes until the oil
settles, remove the oil filler cap,
wipe the dipstick clean, insert it
back into the oil filler hole (with-
out screwing it in and with the
arrow mark pointing upward as
shown), and then remove it
again to check the oil level.
NOTE:
The engine oil should be between the
minimum and maximum level marks.
1. Oil filler cap
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Engine oil and oil filter
element
Engine oil and oil filter elementThe engine oil level should be
checked before each ride. In addition,
the oil must be changed and the oil
filter element replaced at the intervals
specified in the periodic maintenance
and lubrication chart.
To check the engine oil level
1. Place the motorcycle on a level
surface and hold it in an upright
position.
NOTE:
Make sure that the motorcycle is
positioned straight up when checking
the oil level. A slight tilt to the side
can result in a false reading.
2. Start the engine, warm it up for
15 minutes, and then turn it off.
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Do not operate the motorcycle
until you know that the engine oil
level is sufficient.
1. Oil filler cap
2. Dipstick
3. Maximum level mark
4. Minimum level mark
To change the engine oil (with or
without oil filter element replace-
ment)
1. Start the engine, warm it up for
several minutes, and then turn it
off.
2. Place an oil pan under the
engine to collect the used oil.
3. Remove the engine oil filler cap
and drain bolts to drain the oil
from the crankcase.
NOTE:
Skip steps 4–6 if the oil filter element
is not being replaced.
1. Engine oil drain bolt A
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Never remove the engine oil tank
cap after high-speed operation,
otherwise hot engine oil could
spout out and cause damage or
injury. Always let the engine oil
cool down sufficiently before
removing the oil tank cap.
4. If the engine oil is below the min-
imum level mark, add sufficient
oil of the recommended type to
raise it to the correct level.
5. Install the oil filler cap.
NOTE:
8The engine oil tank is located
behind the cylinders.
8The engine oil should be
between the minimum and maxi-
mum level marks.
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PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Remove the oil filter element
cover by removing the bolts.
1. Engine oil drain bolt B
2. Oil filter element cover
3. Bolt (×5)
7. Install the engine oil drain bolts,
and then tighten them to the
specified torques.
8. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil
filler cap. 5. Remove and replace the oil filter
element and O-rings.
6. Install the oil filter element cover
by installing the bolts, then tight-
ening them to the specified
torque.
NOTE:
Make sure that the O-rings are prop-
erly seated.
1. Oil filter element
2. O-ring (×2)
Tightening torque:
Oil filter element cover bolt:
10 Nm (1.0 m·kgf)
Tightening torques:
Engine oil drain bolt A:
35 Nm (3.5 m·kgf)
Engine oil drain bolt B:
30 Nm (3.0 m·kgf)
Recommended engine oil:
See page 8-1.
Oil quantity:
Without oil filter element
replacement:
3.8 L
With oil filter element
replacement:
3.9 L
Total amount (dry engine):
4.7 L
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8In order to prevent clutch slip-
page (since the engine oil also
lubricates the clutch), do not
mix any chemical additives.
Do not use oils with a diesel
specification of “CD” or oils of
a higher quality than specified.
In addition, do not use oils
labeled “ENERGY CONSERV-
ING II” or higher.
8Make sure that no foreign
material 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.2. Check the coolant level in the
coolant reservoir.
NOTE:
The coolant should be between the
minimum and maximum level marks.
1. Coolant reservoir
2. Maximum level mark
3. Minimum level mark
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CoolantCoolantThe coolant level should be checked
before each ride. In addition, the
coolant must be changed at the inter-
vals specified in the periodic mainte-
nance and lubrication chart.
To check the coolant level
Checking1. Place the motorcycle on the cen-
terstand.
NOTE:
8The coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
8Make 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.
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6 3. If the coolant is at or below the
minimum level mark, remove
panel B (See page 6-6 for panel
removal and installation proce-
dures.), remove the reservoir
cap, add coolant to the maximum
level mark, and then install the
reservoir cap and the panel.
1. Coolant reservoir cap
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Never attempt to remove the radia-
tor cap when the engine is hot.
NOTE:
8The radiator fan is automatically
switched on or off according to
the coolant temperature in the
radiator.
8If the engine overheats, see
page 6-45 for further instructions.
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8If 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.
8If water has been used instead
of coolant, replace it with
coolant as soon as possible,
otherwise the engine may not
be sufficiently cooled and the
cooling system will not be pro-
tected against frost and corro-
sion.
8If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possi-
ble, otherwise the effective-
ness of the coolant will be
reduced.
Coolant reservoir capacity
(up to the maximum level mark):
0.25 L
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To change the coolantChanging1. Place the motorcycle on a level
surface and let the engine cool if
necessary.
2. Remove the seat. (See page
3-13 for seat removal and instal-
lation 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
hoses!)
5. Place a container under the
engine to collect the used
coolant.7. Remove the coolant drain bolts
to drain the cooling system.
11
1. Coolant drain bolt (×2)
6. Remove the radiator cap retain-
ing bolt and the radiator cap.
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Never attempt to remove the radia-
tor cap when the engine is hot.
1. Radiator cap retaining bolt
2. Radiator cap
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6 8. Remove the coolant reservoir
bolt.
9. Pull the coolant reservoir upward
and away from the motorcycle.
10. Drain the remaining coolant from
the coolant reservoir by opening
the cap, then turning the reser-
voir upside down.
11. Install the coolant reservoir by
placing it in the original position,
then installing the bolt.
12. After the coolant is completely
drained, thoroughly flush the
cooling system with clean tap
water.
1. Bolt
2. Coolant reservoir
13. Install the coolant drain bolts,
and then tighten them to the
specified torque.
NOTE:
Check the washers for damage and
replace them if necessary.
14. Pour the recommended coolant
into the radiator until it is full. Tightening torque:
Coolant drain bolt:
10 Nm (1.0 m·kgf)
Antifreeze/water mixture ratio:
1:1
Recommended antifreeze:
High-quality ethylene glycol
antifreeze containing corrosion
inhibitors for aluminum engines
Coolant quantity:
Total amount:
1.7 L
Coolant reservoir capacity:
0.25 L
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8If 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.
8If water has been used instead
of coolant, replace it with
coolant as soon as possible,
otherwise the engine may not
be sufficiently cooled and the
cooling system will not be pro-
tected against frost and corro-
sion.
8If water has been added to the
coolant, have a Yamaha dealer
check the antifreeze content of
the coolant as soon as possi-
ble, otherwise the effective-
ness of the coolant will be
reduced.
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8Before installing the fuel tank,
make sure that the fuel hoses
are not damaged. If any fuel
hose is damaged, do not start
the engine but have a Yamaha
dealer replace the hose, other-
wise fuel may leak.
8Make sure that the fuel hoses
are properly connected and
routed, and not pinched.
8Be sure to place the fuel tank
breather hose in the original
position.
19. Install the panel, the cowling,
and the seat.
20. Start the engine, and then check
the vehicle for coolant leakage. If
coolant is leaking, have a
Yamaha dealer check the cool-
ing system. 15. Install the radiator cap, start the
engine, let it idle for several min-
utes, and then turn it off.
16. Remove the radiator cap to
check the coolant level in the
radiator. If necessary, add suffi-
cient coolant until it reaches the
top of the radiator, and then
install the radiator cap and the
cap retaining bolt.
17. Check the coolant level in the
reservoir. If necessary, remove
the coolant reservoir cap, add
coolant to the maximum level
mark, and then install the cap.
18. Install the fuel tank.
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Replacing the air filter
element
Air filter element, replacingThe air filter element should be
replaced at the intervals specified in
the periodic maintenance and lubrica-
tion chart. Replace the air filter ele-
ment more frequently if you are riding
in unusually wet or dusty areas.
1. Remove the seat. (See page
3-13 for seat removal and instal-
lation procedures.)
2. Remove cowlings A and B as
well as panels A and B. (See
pages 6-5 and 6-6 for cowling
and panel removal and installa-
tion procedures.)
1. Bolt (×2)
6. Insert a new air filter element into
the air filter case.
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8Make sure that the air filter ele-
ment is properly seated in the
air filter case.
8The engine should never be
operated without the air filter
element installed, otherwise
the pistons and/or cylinders
may become excessively
worn.
1. Air filter element
3. Remove the fuel tank bolts, and
then lift the fuel tank away from
the air filter case.
4. Remove the air filter case cover
by removing the screws.
5. Pull the air filter element out.
1. Air filter case cover
2. Screw (×8)
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