2007 YAMAHA XTZ125 engine

5-7
5-7Engine Break-in
There is never a more important period in the life of your
motorcycle than the period 1.000Km. For this reason we
ask that you carefully read the following material. Because
the engine is brand new, you must not put an excessive
load on it for the first several hours of running.
During this period, prolonged full throttle operation, or any
condition which might result in excessive heating of the
engine must be avoided.
1. 0 ~ 150 Km:
Avoid operation above 1/3 throttle. Stop the engine and
let it cool for 5 to 10 minutes after every hour of
operation. Vary the speed of the motorcycle from time
to time. Do not operate it at one set throttle position. Your motorcycle’s fuel consumption depends to a large
extent on your riding style. The following tips can help
reduce fuel consumption.
1. Warm up the engine before riding.
2. Turn off the starter lever as soon as possible.
3. Shift up swiftly and avoid high engine speeds during
acceleration.
4. Do not double-clutch or rev the engine while shifting down
and avoid high engine speeds with no load engine.
5. Turn off the engine instead of letting it idle for an extended
lenght of time, i.e. in traffic jams, at traffic lights or railroad
crossings.Tips for reducing fuel consumption
Engine Break-in
There is never a more important period in the life of your
motorcycle than the period 1.000Km. For this reason we
ask that you carefully read the following material. Because
the engine is brand new, you must not put an excessive
load on it for the first several hours of running.
During this period, prolonged full throttle operation, or any
condition which might result in excessive heating of the
engine must be avoided.
1. 0 ~ 150 Km:
Avoid operation above 1/3 throttle. Stop the engine and
let it cool for 5 to 10 minutes after every hour of
operation. Vary the speed of the motorcycle from time
to time. Do not operate it at one set throttle position. Your motorcycle’s fuel consumption depends to a large
extent on your riding style. The following tips can help
reduce fuel consumption.
1. Warm up the engine before riding.
2. Turn off the starter lever as soon as possible.
3. Shift up swiftly and avoid high engine speeds during
acceleration.
4. Do not double-clutch or rev the engine while shifting down
and avoid high engine speeds with no load engine.
5. Turn off the engine instead of letting it idle for an extended
lenght of time, i.e. in traffic jams, at traffic lights or railroad
crossings.Tips for reducing fuel consumption

5-8
5-8 2. 150 ~ 500 Km:
Avoid prolonged operation above 1/2 throttle. Allow the
machine to rev freely through the gears, but do not use
full throttle at any time.
3. 500 ~ 1,000 Km:
Avoid cruising speeds in excess of 3/4 throttle.
CAUTION:
After 1,000Km of operation, be sure to replace the
engine oil.
4. After 1,000 Km:
Avoid prolonged full throttle operation. Vary speeds
occasionally.Parking
When parking the motorcycle, stop the engine and remove
the ignition key. Turn the fuel cock to “OFF” whenever
stopping the engine.
CAUTION:
If any engine trouble should occur during the break-in
period, consult a Yamaha dealer immediately.
The muffler and exhaust pipe are hot. Park the
motorcycle in a place where pedestrians or children
are not likely to touch the motorcycle. Do not park the
motorcycle on a slope or soft ground; the motorcycle
may fall over.
WARNING:
2. 150 ~ 500 Km:
Avoid prolonged operation above 1/2 throttle. Allow the
machine to rev freely through the gears, but do not use
full throttle at any time.
3. 500 ~ 1,000 Km:
Avoid cruising speeds in excess of 3/4 throttle.
CAUTION:
After 1,000Km of operation, be sure to replace the
engine oil.
4. After 1,000 Km:
Avoid prolonged full throttle operation. Vary speeds
occasionally.Parking
When parking the motorcycle, stop the engine and remove
the ignition key. Turn the fuel cock to “OFF” whenever
stopping the engine.
CAUTION:
If any engine trouble should occur during the break-in
period, consult a Yamaha dealer immediately.
The muffler and exhaust pipe are hot. Park the
motorcycle in a place where pedestrians or children
are not likely to touch the motorcycle. Do not park the
motorcycle on a slope or soft ground; the motorcycle
may fall over.
WARNING:

6-3
6-3 PERIODIC MAINTENANCE / LUBRICATION
Wheel bearings* Battery
Check looseness and damage. Check electrolyte level, routing breather pipe.
ITEM
How it sounds
/ Adjust if necessary.
REMARKS1,000KM
Fuel line Air filter
Carburetor*Valves*
Muffler
Brakes* Engine oil
Steering bearings* Rear arm pivot*Check fuel hose, for cracks or damage.Clean or replace if necessary.
Adjust
Check damage, Retighten.
Check operation, adjust.
Grease the brake cam. Replace / Check level
Check loosenes.
Repack every 12,000 km or 12 month.** Check rear arm assembly for looseness.
Moderately repack.***
EVERY
3,000KM
OR ERERY
6 MONTHS
Wheels and tires
Check tire pressure, runout and spoke tightness.
Spark plugCheck condition and clean if necessary.
Replace if necessary every 12,000 Km.
3,000KM
PERIODIC MAINTENANCE / LUBRICATION
Wheel bearings* Battery
Check looseness and damage. Check electrolyte level, routing breather pipe.
ITEM
How it sounds
/ Adjust if necessary.
REMARKS1,000KM
Fuel line Air filter
Carburetor*Valves*
Muffler
Brakes* Engine oil
Steering bearings* Rear arm pivot*Check fuel hose, for cracks or damage.Clean or replace if necessary.
Adjust
Check damage, Retighten.
Check operation, adjust.
Grease the brake cam. Replace / Check level
Check loosenes.
Repack every 12,000 km or 12 month.** Check rear arm assembly for looseness.
Moderately repack.***
EVERY
3,000KM
OR ERERY
6 MONTHS
Wheels and tires
Check tire pressure, runout and spoke tightness.
Spark plugCheck condition and clean if necessary.
Replace if necessary every 12,000 Km.
3,000KM

6-5
6-5
Spark plug12.5 1.25 9.0
Engine oil drain plug20 2.0 14.5
Oil check bolt 7 0.7 5.0
Front wheel axle nut 80 8.0 58
Rear wheel axle nut 80 8.0 58
Use a torque wrench to tighten these items. It is
recommended that these items be checked occasionally,
specially before a long trip. Always check the tightness of
these items whenever they are loosened for any reason.
A
(Nut)
10 mm
12 mm
14 mm
17 mm
19 mm
22 mmB
(Bolt)
6 mm
8 mm
10 mm
12 mm
14 mm
16 mmGeneral torque especifications
Nm
6
15
30
55
85
130kgf.m
0,6
1,5
3,0
5,5
8,5
13,0lbf. ft
4,3
11
22
40
61
94 Torque specifications
Torque
Nm
kgfm Item
Nm
Spark plug12.5 1.25 9.0
Engine oil drain plug20 2.0 14.5
Oil check bolt 7 0.7 5.0
Front wheel axle nut 80 8.0 58
Rear wheel axle nut 80 8.0 58
Use a torque wrench to tighten these items. It is
recommended that these items be checked occasionally,
specially before a long trip. Always check the tightness of
these items whenever they are loosened for any reason.
A
(Nut)
10 mm
12 mm
14 mm
17 mm
19 mm
22 mmB
(Bolt)
6 mm
8 mm
10 mm
12 mm
14 mm
16 mmGeneral torque especifications
Nm
6
15
30
55
85
130kgf.m
0,6
1,5
3,0
5,5
8,5
13,0lbf. ft
4,3
11
22
40
61
94 Torque specifications
Torque
Nm
kgfm Item
Nm

6-6
6-6






 
1. Oil level measurement
a. Place the motorcycle on a level place and hold it in an
upright position. Warm up the engine for several
minutes.
NOTE:
Be sure the motorcycle is positioned straight up when
checking the oil level. A slight tilt toward the side can result
in false readings.
b. With the engine stopped, with the engine stopped,
unscrew the oil filler cap/ dispstick and rest it on the
threads of the ok.
NOTE:
Wait a few minutes until the oil level settles before checking.
c. remove the oil filler cap/ dispstick, clean it with a dry
cloth and check the oil level.
NOTE:
To check the oil level the oil filler cap/ dispstick can not be
screwed, just lightly seated in place.
d. The oil level should be between the maximum and
minimum marks. If the level is low, add oil to raise it to
the indicated level, check for oil leakage. Engine oil






 
1. Oil level measurement
a. Place the motorcycle on a level place and hold it in an
upright position. Warm up the engine for several
minutes.
NOTE:
Be sure the motorcycle is positioned straight up when
checking the oil level. A slight tilt toward the side can result
in false readings.
b. With the engine stopped, with the engine stopped,
unscrew the oil filler cap/ dispstick and rest it on the
threads of the ok.
NOTE:
Wait a few minutes until the oil level settles before checking.
c. remove the oil filler cap/ dispstick, clean it with a dry
cloth and check the oil level.
NOTE:
To check the oil level the oil filler cap/ dispstick can not be
screwed, just lightly seated in place.
d. The oil level should be between the maximum and
minimum marks. If the level is low, add oil to raise it to
the indicated level, check for oil leakage. Engine oil

6-7
6-7
a. Warm up the engine for a few minutes.
b. Stop the engine. Place an oil pan under the engine and
remove the dipstick.
c. Remove the drain plug and drain the oil.
d. Reinstall the drain plug, check if the gasket is damaged
and lighten it to the specified torque.

 




2. Engine oil and filter replacement
Tightening torque:
Drain plug:
20 N.m (2.0 kgf.m, 14.5 lbf.t)
a. Warm up the engine for a few minutes.
b. Stop the engine. Place an oil pan under the engine and
remove the dipstick.
c. Remove the drain plug and drain the oil.
d. Reinstall the drain plug, check if the gasket is damaged
and lighten it to the specified torque.

 




2. Engine oil and filter replacement
Tightening torque:
Drain plug:
20 N.m (2.0 kgf.m, 14.5 lbf.t)

6-8
6-8 e.Fill engine with oil. Install the oil filter cap and tighten.
NOTE:
Recommended engine oil classification; API Service “SH”
type or equivalent
Recommended oil:
YAMALUBE 4
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)
f. Start the engine and warm up for a few minutes. While
warming up, check for oil leakage. If oil leakage is found,
stop the engine immediately, and check for the cause.
g. Stop the engine and check the oil level.
CAUTION:
Be sure no foreign material enters the crankcase.
CAUTION:
Do not put in any chemical additives. Engine oil also
lubricates the clutch and additives could cause clutch
slippage.
After replacing the engine oil, be sure to check the oil
pressure.
CAUTION:
e.Fill engine with oil. Install the oil filter cap and tighten.
NOTE:
Recommended engine oil classification; API Service “SH”
type or equivalent
Recommended oil:
YAMALUBE 4
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)
f. Start the engine and warm up for a few minutes. While
warming up, check for oil leakage. If oil leakage is found,
stop the engine immediately, and check for the cause.
g. Stop the engine and check the oil level.
CAUTION:
Be sure no foreign material enters the crankcase.
CAUTION:
Do not put in any chemical additives. Engine oil also
lubricates the clutch and additives could cause clutch
slippage.
After replacing the engine oil, be sure to check the oil
pressure.
CAUTION:

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)