2007 YAMAHA XTZ125 engine

3-5
3-5

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“ENGINE STOP” SWITCH
The engine stop switch is a safety device for use in an
emergency such as when the motorcycle overturns or if
trouble occurs in the throttle system. Turn the switch to
“ ” to start the engine, and turn the switch to “ ” to
stop the engine.
STARTER SWITCH “ ”
The starter motor cranks the engine when pushing the
starter switch.
CAUTION:
See starting instructions prior to starting the
engine.
Handlebar switches over right:

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“ENGINE STOP” SWITCH
The engine stop switch is a safety device for use in an
emergency such as when the motorcycle overturns or if
trouble occurs in the throttle system. Turn the switch to
“ ” to start the engine, and turn the switch to “ ” to
stop the engine.
STARTER SWITCH “ ”
The starter motor cranks the engine when pushing the
starter switch.
CAUTION:
See starting instructions prior to starting the
engine.
Handlebar switches over right:

3-6
3-6
The clutch lever is located on the left handlebar, and the
starting circuit cut off switch is incorporated in the clutch
lever holder. Pull the clutch lever to the handlebar to
disengage the clutch, and release the lever to engage the
clutch. The lever should be pulled rapidly and released
slowly for smooth clutch operation.
This motorcycle is equipped with a constant-mesh 5-speed
transmission.
The shift pedal is located on the left side of the engine and
is used in combination with the clutch when shifting.
Clutch lever
Shift pedal

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2

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The clutch lever is located on the left handlebar, and the
starting circuit cut off switch is incorporated in the clutch
lever holder. Pull the clutch lever to the handlebar to
disengage the clutch, and release the lever to engage the
clutch. The lever should be pulled rapidly and released
slowly for smooth clutch operation.
This motorcycle is equipped with a constant-mesh 5-speed
transmission.
The shift pedal is located on the left side of the engine and
is used in combination with the clutch when shifting.
Clutch lever
Shift pedal

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3-9
3-9
Fuel cockThe fuel cock supplies fuel from the tank to the carburetor
while filtering it also.
The fuel cock has three positions:
OFF:
With the fuel cock in this position, fuel will not flow. Always
set the fuel cock to this position when the engine is not
running.
ON:
With the fuel cock in this position, fuel flows to the
carburetor. Set the fuel cock to this position when starting
the engine and while riding.
RES:
This indicates reserve. If you run out of fuel while riding,
set the fuel cock to this position.
Fill the tank at the first opportunity. Be sure to set fuel cock
back to “ON” after refueling!
Fuel cockThe fuel cock supplies fuel from the tank to the carburetor
while filtering it also.
The fuel cock has three positions:
OFF:
With the fuel cock in this position, fuel will not flow. Always
set the fuel cock to this position when the engine is not
running.
ON:
With the fuel cock in this position, fuel flows to the
carburetor. Set the fuel cock to this position when starting
the engine and while riding.
RES:
This indicates reserve. If you run out of fuel while riding,
set the fuel cock to this position.
Fill the tank at the first opportunity. Be sure to set fuel cock
back to “ON” after refueling!

3-10
3-10
1
Starting a cold engine requires a richer air-fuel mixture. A
separate starter circuit supplies the mixture.
Pull the starter knob up to open the circuit for starting.
When the engine has warmed up, push the knob down to
close the circuit.Starter lever
1. Starter lever
1. Kick starter
Rotate the kick starter away from the engine. Push the
starter down lighty with your foot until the gears engage,
then kick smoothly and forcefully to start the engine.
Shift to neutral before starting.
Kick starter
1
Starting a cold engine requires a richer air-fuel mixture. A
separate starter circuit supplies the mixture.
Pull the starter knob up to open the circuit for starting.
When the engine has warmed up, push the knob down to
close the circuit.Starter lever
1. Starter lever
1. Kick starter
Rotate the kick starter away from the engine. Push the
starter down lighty with your foot until the gears engage,
then kick smoothly and forcefully to start the engine.
Shift to neutral before starting.
Kick starter

3-15
3-15
If improper operation is noted, consult a Yamaha
dealer or other qualified mechanic immediately.
Check the operation of the clutch switch against the
information below.
TURN MAIN SWITCH TO “ON” AND ENGINE
STOP SWITCH TO “ ”.
TRANSMISSION IS IN GEAR.
PULL IN CLUTCH LEVER AND PUSH
STARTER SWITCH.
↓ ↓↓ ↓
↓
↓ ↓↓ ↓
↓↓ ↓↓ ↓
↓
ENGINE WILL START
* Clutch switch operation check
↓ ↓↓ ↓
↓
CLUTCH SWITCH IS OK
WARNING:
* Obs.: XTZ 125E
If improper operation is noted, consult a Yamaha
dealer or other qualified mechanic immediately.
Check the operation of the clutch switch against the
information below.
TURN MAIN SWITCH TO “ON” AND ENGINE
STOP SWITCH TO “ ”.
TRANSMISSION IS IN GEAR.
PULL IN CLUTCH LEVER AND PUSH
STARTER SWITCH.
↓ ↓↓ ↓
↓
↓ ↓↓ ↓
↓↓ ↓↓ ↓
↓
ENGINE WILL START
* Clutch switch operation check
↓ ↓↓ ↓
↓
CLUTCH SWITCH IS OK
WARNING:
* Obs.: XTZ 125E

4-1
4-1
PRE-OPERATION CHECKS
Before using this motorcycle, check the following points:
ITEM ROUTINE PAGE
Front brake
Check operation, condition and free play.
Adjust if necessary
Clutch
Throttle grip / cableCheck for smooth operation.
Lubricate / Adjust if necessary
Check oil level / add oil as necessary
Engine oil
Drive chainCheck chain slack and condition. Lubricate if necessary
Adjust if necessary.
Air filter
Control and meter cableCheck tire pressure, wear, damage and spoke tightness
Check for smooth operation.
Lubricate if necessary4-3 ~ 4-4
6-17 ~ 6-23
4-8 , 6-14 , 6-27
4-4 , 6-6 , 6-9
6-24 ~ 6-26
6-10 ~ 6-11
4-5 ~ 4-8
6-26 Check operation, condition and free play.
Adjust if necessary
Wheels / Tires
Clean and oil it frequently.4-8 , 6-16 Rear brakeCheck operation, free play, fluid level and fluid leakage.
Top-up with DOT #4 (or DOT #3) brake fluid if necessary.
PRE-OPERATION CHECKS
Before using this motorcycle, check the following points:
ITEM ROUTINE PAGE
Front brake
Check operation, condition and free play.
Adjust if necessary
Clutch
Throttle grip / cableCheck for smooth operation.
Lubricate / Adjust if necessary
Check oil level / add oil as necessary
Engine oil
Drive chainCheck chain slack and condition. Lubricate if necessary
Adjust if necessary.
Air filter
Control and meter cableCheck tire pressure, wear, damage and spoke tightness
Check for smooth operation.
Lubricate if necessary4-3 ~ 4-4
6-17 ~ 6-23
4-8 , 6-14 , 6-27
4-4 , 6-6 , 6-9
6-24 ~ 6-26
6-10 ~ 6-11
4-5 ~ 4-8
6-26 Check operation, condition and free play.
Adjust if necessary
Wheels / Tires
Clean and oil it frequently.4-8 , 6-16 Rear brakeCheck operation, free play, fluid level and fluid leakage.
Top-up with DOT #4 (or DOT #3) brake fluid if necessary.

4-2
4-2 NOTE:
Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be thoroughly accomplished
in a very short time; and the added safety it assures is more than worth the time involved. If any maintenance service or
adjustment is needed, consult the chart above to refer to the pages in which the service or adjustment is described.
1. The engine, exhaust pipe, and muffler will be very hot after the engine has been run.
Be careful not to touch them or to allow any clothing item to contact them during inspection or repair.
2. If any item is not working properly, have it inspected and repaired before operating the motorcycle.
ITEMROUTINE
PAGE
Sidestand
Fittings / FastenersCheck all chassi fittings and fasteners.
Tighten / Adjust, if necessary
Check fuel level / top up as required.
Fuel tank
Lights, signals and switches
BatteryCheck electrolyte level.
Replenish with “distilled water” if necessary.6-27
4-8 , 6-5
4-8 , 6-35 ~ 6-36
6-32 ~ 6-346-28
4-9
Check for proper operation
Front brake and clutch
lever pivotsCheck for smooth operation.
Lubricate if necessary
Check for smooth operation.
Lubricate if necessary
6-27 Check for smooth operation.
Lubricate if necessary Rear brake and shift pedal
shafts
WARNING:
NOTE:
Pre-operation checks should be made each time the motorcycle is used. Such an inspection can be thoroughly accomplished
in a very short time; and the added safety it assures is more than worth the time involved. If any maintenance service or
adjustment is needed, consult the chart above to refer to the pages in which the service or adjustment is described.
1. The engine, exhaust pipe, and muffler will be very hot after the engine has been run.
Be careful not to touch them or to allow any clothing item to contact them during inspection or repair.
2. If any item is not working properly, have it inspected and repaired before operating the motorcycle.
ITEMROUTINE
PAGE
Sidestand
Fittings / FastenersCheck all chassi fittings and fasteners.
Tighten / Adjust, if necessary
Check fuel level / top up as required.
Fuel tank
Lights, signals and switches
BatteryCheck electrolyte level.
Replenish with “distilled water” if necessary.6-27
4-8 , 6-5
4-8 , 6-35 ~ 6-36
6-32 ~ 6-346-28
4-9
Check for proper operation
Front brake and clutch
lever pivotsCheck for smooth operation.
Lubricate if necessary
Check for smooth operation.
Lubricate if necessary
6-27 Check for smooth operation.
Lubricate if necessary Rear brake and shift pedal
shafts
WARNING:

4-4
4-4 If brake fluid leakage is found, ask a Yamaha dealer or
other qualified mechanic for immediate repairs. Such
leakage could indicate a hazardous condition.
CAUTION:
Brake fluid may deteriorate painted surfaces or plastic
parts. Never spill any fluid. If spilled, clean it up
immediately.
Brake fluid leakage
Apply the brake for several seconds. Check to see if any
brake fluid leaks out from the pipe joints or the master
cylinder.
WARNING:
CAUTION:
OIL QUANTITY:
Total amount:
1.2 L ( 0.264 Imp gal, 0.317 US gal)
Periodic oil change:
1.0 L ( 0.220 Imp gal, 0.264 US gal)
Engine oil (See page 6-6 for details)
Make sure the engine oil is at the specified level. Add oil as
necessary.
Check the oil level in a daily manner and top it up if
necessary.
If brake fluid leakage is found, ask a Yamaha dealer or
other qualified mechanic for immediate repairs. Such
leakage could indicate a hazardous condition.
CAUTION:
Brake fluid may deteriorate painted surfaces or plastic
parts. Never spill any fluid. If spilled, clean it up
immediately.
Brake fluid leakage
Apply the brake for several seconds. Check to see if any
brake fluid leaks out from the pipe joints or the master
cylinder.
WARNING:
CAUTION:
OIL QUANTITY:
Total amount:
1.2 L ( 0.264 Imp gal, 0.317 US gal)
Periodic oil change:
1.0 L ( 0.220 Imp gal, 0.264 US gal)
Engine oil (See page 6-6 for details)
Make sure the engine oil is at the specified level. Add oil as
necessary.
Check the oil level in a daily manner and top it up if
necessary.