spark plugs replace YAMAHA TDM 900 2005 Owners Manual

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

EAU17705
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 3-14.)
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 A
1
1

PERIODIC MAINTENANCE AND MINOR REPAIR
6-33
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.