maintenance YAMAHA TMAX 2003 User Guide
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Page 53 of 104
![YAMAHA TMAX 2003 User Guide 6-8
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Cowling A
To remove the cowling
1. Remove the rear view mirrors by
removing the nuts.
2. Remove the cowling screws.
To install the cowling
1. Place the cowl YAMAHA TMAX 2003 User Guide 6-8
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Cowling A
To remove the cowling
1. Remove the rear view mirrors by
removing the nuts.
2. Remove the cowling screws.
To install the cowling
1. Place the cowl](/img/51/51569/w960_51569-52.png)
6-8
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Cowling A
To remove the cowling
1. Remove the rear view mirrors by
removing the nuts.
2. Remove the cowling screws.
To install the cowling
1. Place the cowling in the original
position, and then install the
screws.
2. Install the rear view mirrors by
installing the nuts.
21
2
1. Screw (×2)
2. Nut (×4)
Cowling B
To remove the cowling
1. Remove panels C and E.
2. Remove the cowling screws and
bolts.
3. Unhook the cowling from the
holder at the bottom.
4. Unhook the front of the cowling
by pushing it up, and then pull
the cowling out.
1
2
1. Bolt (×2)
2. Screw (×2)
Panel F
To remove the panel
Remove the panel screws.
To install the panel
1. Place the panel in the original
position, and then install the
screws.
1
1. Screw (×2)
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Page 54 of 104
![YAMAHA TMAX 2003 User Guide 6-9
PERIODIC MAINTENANCE AND MINOR REPAIR
6To install the cowling
1. Place the cowling in the original
position, and then install the
screws and bolts.
2. Install panels C and E.
EAU03816
Checking the YAMAHA TMAX 2003 User Guide 6-9
PERIODIC MAINTENANCE AND MINOR REPAIR
6To install the cowling
1. Place the cowling in the original
position, and then install the
screws and bolts.
2. Install panels C and E.
EAU03816
Checking the](/img/51/51569/w960_51569-53.png)
6-9
PERIODIC MAINTENANCE AND MINOR REPAIR
6To install the cowling
1. Place the cowling in the original
position, and then install the
screws and bolts.
2. Install panels C and E.
EAU03816
Checking the spark plugsSpark plugs, checking
The spark plugs are important engine
components, which are easy to
check. Since heat and deposits will
cause any spark plug to slowly erode,
the spark plugs should be removed
and checked in accordance with the
periodic maintenance and lubrication
chart. In addition, the condition of the
spark plugs can reveal the condition
of the engine. Cowling C
To remove the cowling
1. Remove the cowling bolts.
2. Remove the battery cover by
removing the screws.
3. Pull the cowling off.
To install the cowling
1. Install the battery cover by
installing the screws.
2. Place the cowling in the original
position, and then install the
bolts.
1
2
1. Bolt (×2)
2. Screw (×3)
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![YAMAHA TMAX 2003 User Guide 6-10
PERIODIC MAINTENANCE AND MINOR REPAIR
6 To remove a spark plug
1. Remove cowling B. (See page
6-8 for cowling removal and
installation procedures.)
2. Remove the spark plug cover by
pulling it o YAMAHA TMAX 2003 User Guide 6-10
PERIODIC MAINTENANCE AND MINOR REPAIR
6 To remove a spark plug
1. Remove cowling B. (See page
6-8 for cowling removal and
installation procedures.)
2. Remove the spark plug cover by
pulling it o](/img/51/51569/w960_51569-54.png)
6-10
PERIODIC MAINTENANCE AND MINOR REPAIR
6 To remove a spark plug
1. Remove cowling B. (See page
6-8 for cowling removal and
installation procedures.)
2. Remove the spark plug cover by
pulling it out as shown.
1
1. Spark plug cover
4. Remove the spark plug as
shown with the spark plug
wrench included in the owner’s
tool kit.
1
1. Spark plug wrench
3. Remove the spark plug cap.
1
1. Spark plug cap
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![YAMAHA TMAX 2003 User Guide 6-11
PERIODIC MAINTENANCE AND MINOR REPAIR
6To check the spark plugs
1. Check that the porcelain insula-
tor around the center electrode
on each spark plug is a medium-
to-light tan (the ideal color w YAMAHA TMAX 2003 User Guide 6-11
PERIODIC MAINTENANCE AND MINOR REPAIR
6To check the spark plugs
1. Check that the porcelain insula-
tor around the center electrode
on each spark plug is a medium-
to-light tan (the ideal color w](/img/51/51569/w960_51569-55.png)
6-11
PERIODIC MAINTENANCE AND MINOR REPAIR
6To check the spark plugs
1. Check that the porcelain insula-
tor around the center electrode
on each spark plug is a medium-
to-light tan (the ideal color when
the scooter is ridden normally).
2. Check that all spark plugs
installed in the engine have the
same color.
NOTE:
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
scooter.
3. Check each spark plug for elec-
trode erosion and excessive car-
bon or other deposits, and
replace it if necessary.
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.
4. Install the spark plug cap. To install a spark plug
1. Measure the spark plug gap with
a wire thickness gauge and, if
necessary, adjust the gap to
specification.
2. Clean the surface of the spark
plug gasket and its mating sur-
face, and then wipe off any grime
from the spark plug threads.
3. Install the spark plug with the
spark plug wrench, and then
tighten it to the specified torque.
a
a. Spark plug gap
Specified spark plug:
CR7E (NGK)
Spark plug gap:
0.7–0.8 mm
Tightening torque:
Spark plug:
12.5 Nm (1.25 m·kgf)
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![YAMAHA TMAX 2003 User Guide 6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
6 5. Place the spark plug cover in the
original position as shown, and
then install the cowling.
1
1. Spark plug cover
2. Start the engine, warm it up for
tw YAMAHA TMAX 2003 User Guide 6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
6 5. Place the spark plug cover in the
original position as shown, and
then install the cowling.
1
1. Spark plug cover
2. Start the engine, warm it up for
tw](/img/51/51569/w960_51569-56.png)
6-12
PERIODIC MAINTENANCE AND MINOR REPAIR
6 5. Place the spark plug cover in the
original position as shown, and
then install the cowling.
1
1. Spark plug cover
2. Start the engine, warm it up for
two minutes, and then turn it off.
3. Wait two minutes until the oil set-
tles, and then check the oil level
through the check window locat-
ed at the bottom-left side of the
crankcase.
NOTE:
The engine oil should be between the
minimum and maximum level marks.
1
32
1. Engine oil level check window
2. Maximum level mark
3. Minimum level mark
EAU04621
Engine oil and oil filter
cartridge
Engine oil and oil filter cartridge
The engine oil level should be
checked before each ride. In addition,
the oil must be changed and the oil
filter cartridge replaced at the inter-
vals specified in the periodic mainte-
nance and lubrication chart.
To check the engine oil level
1. Place the scooter on the center-
stand.
ECA00081
cC
The engine must be cold before
proceeding with the oil level
check, otherwise the check will
result in a false reading.
NOTE:
Make sure that the scooter is posi-
tioned straight up when checking the
oil level. A slight tilt to the side can
result in a false reading.
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![YAMAHA TMAX 2003 User Guide 6-13
PERIODIC MAINTENANCE AND MINOR REPAIR
64. 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.
2
1
3
1. Maximum level YAMAHA TMAX 2003 User Guide 6-13
PERIODIC MAINTENANCE AND MINOR REPAIR
64. 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.
2
1
3
1. Maximum level](/img/51/51569/w960_51569-57.png)
6-13
PERIODIC MAINTENANCE AND MINOR REPAIR
64. 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.
2
1
3
1. Maximum level mark
2. Minimum level mark
3. Engine oil drain bolt
4. Remove the oil filter cartridge
with an oil filter wrench.
NOTE:
An oil filter wrench is available at a
Yamaha dealer.
5. Apply a thin coat of engine oil to
the O-ring of the new oil filter
cartridge.
NOTE:
Make sure that the O-ring is properly
seated.
2
1
1. Oil filter wrench
2. Oil filter cartridge
To change the engine oil (with or
without oil filter cartridge 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 bolt to drain the oil
from the crankcase.
NOTE:
Skip steps 4–6 if the oil filter cartridge
is not being replaced.
1
1. Engine oil filler cap
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![YAMAHA TMAX 2003 User Guide 6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
6 6. Install the new oil filter cartridge,
and then tighten it to the speci-
fied torque with a torque wrench.
7. Install the engine oil drain bolt,
and then YAMAHA TMAX 2003 User Guide 6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
6 6. Install the new oil filter cartridge,
and then tighten it to the speci-
fied torque with a torque wrench.
7. Install the engine oil drain bolt,
and then](/img/51/51569/w960_51569-58.png)
6-14
PERIODIC MAINTENANCE AND MINOR REPAIR
6 6. Install the new oil filter cartridge,
and then tighten it to the speci-
fied torque with a torque wrench.
7. Install the engine oil drain bolt,
and then tighten it to the speci-
fied torque.
1
1. Torque wrench
ECA00133
cC
8
8
In 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.
8 8
Make 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. 8. Add the specified amount of the
recommended engine oil, and
then install and tighten the oil
filler cap.
Tightening torque:
Oil filter cartridge:
17 Nm (1.7 m·kgf)
Tightening torque:
Engine oil drain bolt:
43 Nm (4.3 m·kgf)
Recommended engine oil:
SAE 10W-30 or SAE 10W-40
(API SE, SF, SG or higher)
Oil quantity:
Without oil filter cartridge
replacement:
2.8 L
With oil filter cartridge
replacement:
2.9 L
Total amount (dry engine):
3.6 L
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![YAMAHA TMAX 2003 User Guide 6-15
PERIODIC MAINTENANCE AND MINOR REPAIR
6To reset the oil change indicator
light
1. Turn the key to “ON”.
2. Hold the reset button pushed for
two to five seconds.
3. Release the reset button, a YAMAHA TMAX 2003 User Guide 6-15
PERIODIC MAINTENANCE AND MINOR REPAIR
6To reset the oil change indicator
light
1. Turn the key to “ON”.
2. Hold the reset button pushed for
two to five seconds.
3. Release the reset button, a](/img/51/51569/w960_51569-59.png)
6-15
PERIODIC MAINTENANCE AND MINOR REPAIR
6To reset the oil change indicator
light
1. Turn the key to “ON”.
2. Hold the reset button pushed for
two to five seconds.
3. Release the reset button, and
the oil change indicator light will
go off.
1
1. Reset button “Oil Change”
EAU04253
Chain drive oilChain drive oil
The chain drive oil should be
changed as follows at the intervals
specified in the periodic maintenance
and lubrication chart.
1. Remove panel F. (See page 6-8
for panel removal and installation
procedures.)
2. Place an oil pan under the chain
drive case to collect the used oil.
3. Remove the oil filler cap and
drain bolt to drain the oil from the
chain drive case.
1
2
1. Chain drive oil filler cap
2. Chain drive oil drain bolt
NOTE:
If the engine oil is changed before the
oil change indicator light comes on
(i.e. before the periodic oil change
interval has been reached), the indi-
cator light must be reset after the oil
change for the next periodic oil
change to be indicated at the correct
time. To reset the oil change indicator
light before the periodic oil change
interval has been reached, follow the
above procedure, but note that the
indicator light will come on for
1.4 seconds after releasing the reset
button, otherwise repeat the proce-
dure.
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![YAMAHA TMAX 2003 User Guide 6-16
PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Install the chain drive oil drain
bolt, and then tighten it to the
specified torque.
5. Add the specified amount of the
recommended oil.
6. Wipe the dip YAMAHA TMAX 2003 User Guide 6-16
PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Install the chain drive oil drain
bolt, and then tighten it to the
specified torque.
5. Add the specified amount of the
recommended oil.
6. Wipe the dip](/img/51/51569/w960_51569-60.png)
6-16
PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Install the chain drive oil drain
bolt, and then tighten it to the
specified torque.
5. Add the specified amount of the
recommended oil.
6. Wipe the dipstick clean, insert it
into the oil filler hole (without
screwing it in), and then remove
it to check the oil level.
ECA00078
cC
Make sure that no foreign material
enters the chain drive case.
NOTE:
The engine oil should be between the
minimum and maximum level marks.
7. 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.
8. Insert the dipstick into the oil filler
hole, and then tighten the oil filler
cap.
1
2
1. Maximum level mark
2. Minimum level mark
Tightening torque:
Chain drive oil drain bolt:
20 Nm (2.0 m·kgf)
Recommended chain drive oil:
See page 8-1.
Oil quantity:
0.7 L
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![YAMAHA TMAX 2003 User Guide 6-17
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU04964
Coolant
To check the coolant level
1. Place the scooter on a level sur-
face and hold it in an upright
position.
NOTE:
8The coolant level must be
YAMAHA TMAX 2003 User Guide 6-17
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU04964
Coolant
To check the coolant level
1. Place the scooter on a level sur-
face and hold it in an upright
position.
NOTE:
8The coolant level must be](/img/51/51569/w960_51569-61.png)
6-17
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU04964
Coolant
To check the coolant level
1. Place the scooter on a level sur-
face and hold it in an upright
position.
NOTE:
8The coolant level must be
checked on a cold engine since
the level varies with engine tem-
perature.
8Make sure that the scooter is
positioned straight up when
checking the coolant level. A
slight tilt to the side can result in
a false reading.
3. Check the coolant level in the
coolant reservoir.
NOTE:
The coolant should be between the
minimum and maximum level marks.
12
1. Maximum level mark
2. Minimum level mark
2. Remove the coolant reservoir
cover by removing the screw.
12
1. Coolant reservoir cover
2. Screw
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