2004 YAMAHA TDM 900 spark plugs

TABLE OF CONTENTS
SAFETY INFORMATION ............. 1-1
DESCRIPTION ............................. 2-1
Left view ..................................... 2-1
Right view................................... 2-2
Controls and instruments ........... 2-3
INSTRUMENT AND CONTROL
FUNCTIONS ................................ 3-1
Immobilizer system ................... 3-1
Main switch/steering lock .......... 3-2
Indicator and warning lights ...... 3-3
Speedometer unit ...................... 3-5
Tachometer unit ........................ 3-6
Coolant temperature gauge ...... 3-7
Anti-theft alarm (optional) .......... 3-8
Handlebar switches ................... 3-8
Clutch lever ............................... 3-9
Shift pedal ............................... 3-10
Brake lever .............................. 3-10
Brake pedal ............................. 3-11
Fuel tank cap ........................... 3-11
Fuel ......................................... 3-12
Fuel tank breather hose .......... 3-13
Catalytic converter .................. 3-13
Seat ......................................... 3-13
Storage compartment .............. 3-14
Adjusting the front fork ............ 3-15Adjusting the shock absorber
assembly ............................... 3-16
Luggage strap holders ............ 3-18
Sidestand ................................ 3-18
Ignition circuit cut-off system ... 3-19
PRE-OPERATION CHECKS ....... 4-1
Pre-operation check list ............ 4-2
OPERATION AND IMPORTANT
RIDING POINTS ........................... 5-1
Starting the engine .................... 5-1
Shifting ...................................... 5-2
Tips for reducing fuel
consumption ............................ 5-3
Engine break-in ......................... 5-3
Parking ...................................... 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR ............................ 6-1
Owner’s tool kit ......................... 6-1
Periodic maintenance and
lubrication chart ....................... 6-2
Removing and installing
cowlings and panels ................ 6-5
Checking the spark plugs .......... 6-6
Engine oil and oil filter
element ................................... 6-7Coolant .................................... 6-10
Replacing the air filter
element ................................. 6-14
Adjusting the engine idling
speed .................................... 6-15
Adjusting the throttle cable free
play ....................................... 6-16
Adjusting the valve
clearance .............................. 6-16
Tires ........................................ 6-16
Cast wheels ............................ 6-19
Adjusting the clutch lever free
play ....................................... 6-20
Adjusting the brake pedal
position .................................. 6-21
Adjusting the rear brake light
switch .................................... 6-21
Checking the front and rear
brake pads ............................ 6-22
Checking the brake fluid
level ....................................... 6-22
Changing the brake fluid ......... 6-23
Drive chain slack ..................... 6-24
Lubricating the drive chain ...... 6-25
Checking and lubricating the
cables .................................... 6-26
Checking and lubricating the
throttle grip and cable ........... 6-26

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
2
3
4
5
67
8
9

EAU17701
Periodic maintenance and lubrication chart
NOTE:


The annual checks must be performed every year, except if a kilometer-based maintenance is performed in-
stead.

From 50000 km, repeat the maintenance intervals starting from 10000 km.

Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technical
skills.
NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (
×
1000 km)
ANNUAL
CHECK
1 10203040
1*
Fuel line


Check fuel hoses for cracks or damage.
√

√

√

√

√

2*
Spark plugs


Check condition.

Clean and regap.
√

√


Replace.
√

√

3*
Valves


Check valve clearance.

Adjust.Every 40000 km
4
Air filter element

Replace.
√

5
Clutch

Check operation.

Adjust.
√

√

√

√

√

6*
Front brake


Check operation, fluid level and vehicle for fluid leak-
age.
√

√

√

√

√

√



Replace brake pads. Whenever worn to the limit
7*
Rear brake

Check operation, fluid level and vehicle for fluid leak-
age.
√

√

√

√

√

√



Replace brake pads. Whenever worn to the limit
8*
Brake hoses

Check for cracks or damage.
√

√

√

√

√



Replace. Every 4 years
9*
Wheels

Check runout and for damage.
√

√

√

√

PERIODIC MAINTENANCE AND MINOR REPAIR
6-6
2
3
4
5
67
8
9
To install the cowling
Place the cowling in the original posi-
tion, and then install the screws and the
quick fastener.NOTE:

To install the quick fastener, push the
center pin out so that it will protrude
from the fastener head, insert the fas-
tener into the cowling, and then push
the protruding pin in until it is flush with
the fastener head.
EAU19171
Panels A and B
To remove one of the panels
1. Remove the corresponding cowl-
ing A or B. (See page 6-5.)
2. Remove the seat. (See
page 3-13.)
3. Remove the screw, and then take
the panel off.To install the panel
1. Place the panel in the original po-
sition, and then install the screw.
2. Install the seat and the cowling.

EAU19641
Checking the spark plugs
The 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 mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine 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 deal-
er check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.
1. Screw
1. Panel B
1
1

PERIODIC MAINTENANCE AND MINOR REPAIR
6-39
1
2
3
4
5
6
7
8
9

EAU25911
Troubleshooting charts
Starting problems or poor engine
performance
WARNING

EWA10840
Keep away open flames and do not smoke while checking or working on the fuel system.
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.
There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plugs
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gaps, or replace the spark plugs.
Have a Yamaha dealer check the vehicle.
The engine does not start.
Have a Yamaha dealer
check the vehicle.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and charge the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.

MOTORCYCLE CARE AND STORAGE
7-3
1
2
3
4
5
6
7
8
9
CAUTION:

ECA10800

Apply spray oil and wax spar-
ingly and make sure to wipe off
any excess.

Never apply oil or wax to any
rubber and plastic parts, but
treat them with a suitable care
product.

Avoid using abrasive polishing
compounds as they will wear
away the paint.
NOTE:

Consult a Yamaha dealer for advice on
what products to use.
EAU26190
Storage
Short-term
Always store your motorcycle in a cool,
dry place and, if necessary, protect it
against dust with a porous cover.
CAUTION:

ECA10810

Storing the motorcycle in a
poorly ventilated room or cover-
ing it with a tarp, while it is still
wet, will allow water and humid-
ity to seep in and cause rust.

To prevent corrosion, avoid
damp cellars, stables (because
of the presence of ammonia)
and areas where strong chemi-
cals are stored.
Long-term
Before storing your motorcycle for sev-
eral months:
1. Follow all the instructions in the
“Care” section of this chapter.
2. For motorcycles equipped with a
fuel cock that has an “OFF” posi-
tion: Turn the fuel cock lever to
“OFF”.3. Drain the carburetor float chamber
by loosening the drain bolt; this will
prevent fuel deposits from building
up. Pour the drained fuel into the
fuel tank.
4. Fill up the fuel tank and add fuel
stabilizer (if available) to prevent
the fuel tank from rusting and the
fuel from deteriorating.
5. Perform the following steps to pro-
tect the cylinders, piston rings, etc.
from corrosion.
a. Remove the spark plug caps
and spark plugs.
b. Pour a teaspoonful of engine oil
into each spark plug bore.
c. Install the spark plug caps onto
the spark plugs, and then place
the spark plugs on the cylinder
head so that the electrodes are
grounded. (This will limit spark-
ing during the next step.)
d. Turn the engine over several
times with the starter. (This will
coat the cylinder walls with oil.)
e. Remove the spark plug caps

MOTORCYCLE CARE AND STORAGE
7-4
2
3
4
5
6
78
9
from the spark plugs, and then
install the spark plugs and the
spark plug caps.
WARNING

EWA10950
To prevent damage or injury from
sparking, make sure to ground the
spark plug electrodes while turning
the engine over.
6. Lubricate all control cables and the
pivoting points of all levers and
pedals as well as of the sidestand/
centerstand.
7. Check and, if necessary, correct
the tire air pressure, and then lift
the motorcycle so that both of its
wheels are off the ground. Alterna-
tively, turn the wheels a little every
month in order to prevent the tires
from becoming degraded in one
spot.
8. Cover the muffler outlets with plas-
tic bags to prevent moisture from
entering them.
9. Remove the battery and fully
charge it. Store it in a cool, dryplace and charge it once a month.
Do not store the battery in an ex-
cessively cold or warm place (less
than 0 °C or more than 30 °C). For
more information on storing the
battery, see page 6-29.
NOTE:

Make any necessary repairs before
storing the motorcycle.