engine oil YAMAHA XTZ125 2003 User Guide

6-9
6-9
Oil pressure1. Remove the check bolt 1 in the cylinder head.
2. Start the engine and keep it idling until oil flows out of
the bleed hole. If no oil comes out after one minute,
turn off the engine immediately so it will not seize. In
such a case go to the nearest Yamaha dealer or other
qualified mechanic for repairs.
3. After checking, tighten the check bolt to the specified
torque.
Check bolt torque:
7 N.m (0.7 Kgf.m, 5.0 lbf.ft)



Oil pressure1. Remove the check bolt 1 in the cylinder head.
2. Start the engine and keep it idling until oil flows out of
the bleed hole. If no oil comes out after one minute,
turn off the engine immediately so it will not seize. In
such a case go to the nearest Yamaha dealer or other
qualified mechanic for repairs.
3. After checking, tighten the check bolt to the specified
torque.
Check bolt torque:
7 N.m (0.7 Kgf.m, 5.0 lbf.ft)




6-11
6-11
CAUTION:
Make sure the element is properly seated in the air filter
case.
CAUTION:
The engine should never be run without the air filter
element installed; excessive piston and/or cylinder wear
may result.
Recommended oil:
Engine oil 20W50 4. Remove the air filter element from the guide and clean
it with solvent. After cleaning, remove the remaining
solvent by squeezing the air filter
5. Apply recommended oil to the entire surface of the filter
and squeeze out the excess oil. The air filter should be
wet but not dripping.
6. Reinstall the air filter in its case.
7. Install the air filter case cover and the right side cover.
CAUTION:
Make sure the element is properly seated in the air filter
case.
CAUTION:
The engine should never be run without the air filter
element installed; excessive piston and/or cylinder wear
may result.
Recommended oil:
Engine oil 20W50 4. Remove the air filter element from the guide and clean
it with solvent. After cleaning, remove the remaining
solvent by squeezing the air filter
5. Apply recommended oil to the entire surface of the filter
and squeeze out the excess oil. The air filter should be
wet but not dripping.
6. Reinstall the air filter in its case.
7. Install the air filter case cover and the right side cover.

6-26
6-26Cable inspection and lubrication Drive chain lubrication
The chain consists of many parts which work with each
other. If the chain is not maintained properly, it will wear out
quickly. Therefore, the chain must be serviced regularly.
This service is especially necessary when riding in dusty
areas.
1. Use Yamaha Chain and Cable Lube or any brands of
spray-type chain lubricant. First, remove all dirt and mud
from the chain with a brush or cloth, then spray lubricant
between both rows of side plates and on all center
rollers. The chain should be lubricated every 500 km
(300 mi).
2. To clean the chain, remove it from the machine, dip it
in solvent, and clean out as much dirt as possible. Take
the chain out of the solvent and dry it. Immediately
lubricate the chain to prevent it from rusting.Damage to the outer housing of cables may allow
internal rusting and cause interfere with cable
movement. Replace damaged cables as soon as
possible to prevent unsafe conditions.
Lubricate the inner cable and the cable end. If it does not
operate smoothly, ask a Yamaha dealer to replace them.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
WARNING:
Cable inspection and lubrication Drive chain lubrication
The chain consists of many parts which work with each
other. If the chain is not maintained properly, it will wear out
quickly. Therefore, the chain must be serviced regularly.
This service is especially necessary when riding in dusty
areas.
1. Use Yamaha Chain and Cable Lube or any brands of
spray-type chain lubricant. First, remove all dirt and mud
from the chain with a brush or cloth, then spray lubricant
between both rows of side plates and on all center
rollers. The chain should be lubricated every 500 km
(300 mi).
2. To clean the chain, remove it from the machine, dip it
in solvent, and clean out as much dirt as possible. Take
the chain out of the solvent and dry it. Immediately
lubricate the chain to prevent it from rusting.Damage to the outer housing of cables may allow
internal rusting and cause interfere with cable
movement. Replace damaged cables as soon as
possible to prevent unsafe conditions.
Lubricate the inner cable and the cable end. If it does not
operate smoothly, ask a Yamaha dealer to replace them.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
WARNING:

6-27
6-27Brake and clutch levers
Lubricate the pivoting parts.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50 Throttle cable and grip lubrication
The throttle twist grip assembly should be greased at the
time the cable is lubricated, since the grip must be removed
to get at the end of the throttle cable.
After removing the screws, hold the end of the cable up in
the air and put in several drops of lubricant. With the throttle
grip disassembled, coat the metal surface of the grip
assembly with a suitable all-purpose grease.Brake and shift pedals
Lubricate the pivoting parts.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
Brake and clutch levers
Lubricate the pivoting parts.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50 Throttle cable and grip lubrication
The throttle twist grip assembly should be greased at the
time the cable is lubricated, since the grip must be removed
to get at the end of the throttle cable.
After removing the screws, hold the end of the cable up in
the air and put in several drops of lubricant. With the throttle
grip disassembled, coat the metal surface of the grip
assembly with a suitable all-purpose grease.Brake and shift pedals
Lubricate the pivoting parts.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50

6-28
6-28
Rear suspensionSidestand
Lubricate the pivoting parts. Check to see that the sidestand
moves up and down smoothly.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
If the sidestand does not move smoothly, consult a
Yamaha dealer.
Lubricate the rear suspension through the nipple.
RECOMMENDED LUBRICANT:
Molybdenum dissulfide grease

0
1


WARNING:
Rear suspensionSidestand
Lubricate the pivoting parts. Check to see that the sidestand
moves up and down smoothly.
RECOMMENDED LUBRICANT:
Engine oil SAE 20W50
If the sidestand does not move smoothly, consult a
Yamaha dealer.
Lubricate the rear suspension through the nipple.
RECOMMENDED LUBRICANT:
Molybdenum dissulfide grease

0
1


WARNING:

7-2
7-2 B. Storage
Long term storage (30 days or more) of your machine will
require some preventive procedures to guard against
deterioration. After thoroughly cleaning the machine,
prepare for storage as follows:
1. Drain the fuel tank, fuel lines, and carburetor float
bowl(s).
2. Remove the spark plug(s), pour about one tablespoon
of SAE 20W50 motor oil in the spark plug hole(s) and
reinstall the spark plug(s).
Crank the engine over several times (with the
ignition off) to coat the cylinder walls with oil.
3. Remove the drive chain. Clean it thoroughly with
solvent and lubricate it.
Reinstall the chain or store it in a plastic bag
(tied to frame for safe-keeping).
4. Lubricate all control cables.
5. Block up the frame to raise both wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe outlet to
prevent moisture from entering.7. If storing in a humid or salt-air atmosphere, coat
all exposed metal surfaces with a light film of
oil. Do not apply oil to any rubber parts or the
seat cover.
8. Remove the battery and charge it. Store it in a dry place
and recharge it once a month. Do not store the battery
in an excessively warm or cold place (less than 0ºC
(30ºF) or more than 30ºC (90ºF).
NOTE:
Make any necessary repairs before storing the machine.
B. Storage
Long term storage (30 days or more) of your machine will
require some preventive procedures to guard against
deterioration. After thoroughly cleaning the machine,
prepare for storage as follows:
1. Drain the fuel tank, fuel lines, and carburetor float
bowl(s).
2. Remove the spark plug(s), pour about one tablespoon
of SAE 20W50 motor oil in the spark plug hole(s) and
reinstall the spark plug(s).
Crank the engine over several times (with the
ignition off) to coat the cylinder walls with oil.
3. Remove the drive chain. Clean it thoroughly with
solvent and lubricate it.
Reinstall the chain or store it in a plastic bag
(tied to frame for safe-keeping).
4. Lubricate all control cables.
5. Block up the frame to raise both wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe outlet to
prevent moisture from entering.7. If storing in a humid or salt-air atmosphere, coat
all exposed metal surfaces with a light film of
oil. Do not apply oil to any rubber parts or the
seat cover.
8. Remove the battery and charge it. Store it in a dry place
and recharge it once a month. Do not store the battery
in an excessively warm or cold place (less than 0ºC
(30ºF) or more than 30ºC (90ºF).
NOTE:
Make any necessary repairs before storing the machine.

8-1
8-1
SPECIFICATIONS
MODEL
Dimension:
Overall length
Overall width
Overall height
Seat height
Wheet base
Minimum ground clearance
Basic weight:
With oil and without fuel:
Minimum turning radius:
Engine:
Type
Cylinder arrangement
Displacement
Bore x Stroke
Compression rate
Starting system
Lubrification system
103 Kg (227 lb)
113 Kg (249 lb) 2.090 mm (82.3 in)
810 mm (31.9 in)
1.125 mm (44.3 in)
840 mm (33.1 in)
1.340 mm (52.7 in)
265 mm (10.4 in)
2.100 mm (82.7 in)
XTZ 125K
Air cooled, 4-stroke
gasoline, SOHC
Single cylinder
123.7 cm
3
54 x 54 mm (2.13 x 2.13 in)
10.0 : 1
Kick starter
Wet sump
104 Kg (229 lb)
114 Kg (251 lb) 2.090 mm (82.3 in)
810 mm (31.9 in)
1.125 mm (44.3 in)
840 mm (33.1 in)
1.340 mm (52.7 in)
265 mm (10.4 in)
2.100 mm (82.7 in)
XTZ 125E
Air cooled, 4-stroke
gasoline, SOHC
Single cylinder
123.7 cm
3
54 x 54 mm (2.13 x 2.13 in)
10.0 : 1
Electric starter
Wet sump
SPECIFICATIONS
MODEL
Dimension:
Overall length
Overall width
Overall height
Seat height
Wheet base
Minimum ground clearance
Basic weight:
With oil and without fuel:
Minimum turning radius:
Engine:
Type
Cylinder arrangement
Displacement
Bore x Stroke
Compression rate
Starting system
Lubrification system
103 Kg (227 lb)
113 Kg (249 lb) 2.090 mm (82.3 in)
810 mm (31.9 in)
1.125 mm (44.3 in)
840 mm (33.1 in)
1.340 mm (52.7 in)
265 mm (10.4 in)
2.100 mm (82.7 in)
XTZ 125K
Air cooled, 4-stroke
gasoline, SOHC
Single cylinder
123.7 cm
3
54 x 54 mm (2.13 x 2.13 in)
10.0 : 1
Kick starter
Wet sump
104 Kg (229 lb)
114 Kg (251 lb) 2.090 mm (82.3 in)
810 mm (31.9 in)
1.125 mm (44.3 in)
840 mm (33.1 in)
1.340 mm (52.7 in)
265 mm (10.4 in)
2.100 mm (82.7 in)
XTZ 125E
Air cooled, 4-stroke
gasoline, SOHC
Single cylinder
123.7 cm
3
54 x 54 mm (2.13 x 2.13 in)
10.0 : 1
Electric starter
Wet sump

8-2
8-2
MODEL XTZ 125E and XTZ 125K
Engine oil:
Air filter:
Fuel:
Type
Tank capacity
Reserve amount
Carburetor:
Type / manufacturer
Spark plug:
Type / manufacturer
Gap
Clutch type: Capacity:
Periódic oil change
Total amount
TypeYAMALUBE 4 or SAE 20W50 type SH
Wet type element
CR7HSA / NGK or U22FSR-U / DENSO
0.7 mm (0.028 in)
Wet, multi-disc Regular unleaded gasoline
10,6
l ( 2.33 Imp gal, 2.80 US gal)
1,0
l ( 0.220 Imp gal, 0.264 US gal) 1,0
l ( 0,220 Imp gal, 0.264 US gal)
1,2 l ( 0,264 Imp gal, 0.317 US gal)
VM 20SS / Mikuni
MODELXTZ 125E and XTZ 125K
Engine oil:
Air filter:
Fuel:
Type
Tank capacity
Reserve amount
Carburetor:
Type / manufacturer
Spark plug:
Type / manufacturer
Gap
Clutch type: Capacity:
Periódic oil change
Total amount
TypeYAMALUBE 4 or SAE 20W50 type SH
Wet type element
CR7HSA / NGK or U22FSR-U / DENSO
0.7 mm (0.028 in)
Wet, multi-disc Regular unleaded gasoline
10,6
l ( 2.33 Imp gal, 2.80 US gal)
1,0 l ( 0.220 Imp gal, 0.264 US gal) 1,0
l ( 0,220 Imp gal, 0.264 US gal)
1,2 l ( 0,264 Imp gal, 0.317 US gal)
VM 20SS / Mikuni