2008 YAMAHA YBR125 fuel filter

TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-2
Controls and instruments.................2-3
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Main switch/steering lock ................3-1
Indicator and warning lights ............3-2
Speedometer unit ...........................3-2
Tachometer ....................................3-3
Self-diagnosis device ......................3-3
Fuel gauge ......................................3-3
Handlebar switches ........................3-4
Clutch lever .....................................3-5
Shift pedal .......................................3-5
Brake lever .....................................3-5
Brake pedal ....................................3-6
Fuel tank cap ..................................3-6
Fuel .................................................3-7
Catalytic converters ........................3-8
Kickstarter .......................................3-8
Adjusting the shock absorber
assemblies ..................................3-8
Carrier .............................................3-9
Sidestand ........................................3-9
Ignition circuit cut-off system ........3-10PRE-OPERATION CHECKS............. 4-1
Pre-operation check list .................. 4-2
OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting the engine ......................... 5-1
Shifting ........................................... 5-2
Tips for reducing fuel
consumption ............................... 5-3
Engine break-in .............................. 5-3
Parking ........................................... 5-4
PERIODIC MAINTENANCE AND
MINOR REPAIR................................. 6-1
Owner’s tool kit ............................... 6-1
Periodic maintenance and
lubrication chart .......................... 6-2
Removing and installing panels ..... 6-6
Checking the spark plug ................. 6-7
Engine oil ....................................... 6-9
Cleaning the air filter element ...... 6-10
Checking the engine idling
speed ........................................ 6-12
Adjusting the throttle cable free
play ........................................... 6-12
Valve clearance ............................ 6-13
Tires ............................................. 6-13
Cast wheels .................................. 6-15
Adjusting the clutch lever free
play ........................................... 6-16Checking the front brake lever free
play ........................................... 6-17
Adjusting the brake pedal free
play ........................................... 6-17
Checking the shift pedal .............. 6-18
Adjusting the rear brake light
switch ....................................... 6-18
Checking the front brake pads and
rear brake shoes ...................... 6-19
Checking the front brake fluid
level .......................................... 6-19
Changing the brake fluid .............. 6-20
Drive chain slack .......................... 6-21
Cleaning and lubricating the drive
chain ......................................... 6-22
Checking and lubricating
the cables ................................. 6-23
Checking and lubricating
the throttle grip and cable ......... 6-23
Checking and lubricating
the brake and clutch levers ...... 6-23
Checking and lubricating
the brake pedal ......................... 6-24
Checking and lubricating the
centerstand and sidestand ....... 6-24
Lubricating the swingarm
pivots ........................................ 6-25
Checking the front fork ................. 6-25
Checking the steering .................. 6-26
Checking the wheel bearings ....... 6-26
Battery ......................................... 6-27U27SE0E0.book Page 1 Friday, February 22, 2008 8:54 AM

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU17715
Periodic maintenance and lubrication chart NOTE:

The annual checks must be performed every year, except if a kilometer-based maintenance, or for the UK, a
mileage-based maintenance, is performed instead.


From 30000 km (17500 mi), repeat the maintenance intervals starting from 6000 km (3500 mi).


Items marked with an asterisk should be performed by a Yamaha dealer as they require special tools, data and technicalskills.
NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING
ANNUAL
CHECK 1000 km
(600 mi)6000 km
(3500 mi)12000 km
(7000 mi)18000 km
(10500 mi)24000 km
(14000 mi)
1*Fuel lineCheck fuel hoses for cracks or
damage.√√√√√
2 Spark plugCheck condition.
Clean and regap.√√
Replace.√√
3*ValvesCheck valve clearance.
Adjust.√√√√
4 Air filter elementClean.√√
Replace.√√
5ClutchCheck operation.
Adjust.√√√√√
6*Front brakeCheck operation, fluid level and
vehicle for fluid leakage.√√√√√√
Replace brake pads. Whenever worn to the limit
U27SE0E0.book Page 2 Friday, February 22, 2008 8:54 AM

SPECIFICATIONS
8-1
8
Dimensions:Overall length:
2055 mm (80.9 in)
Overall width:
845 mm (33.3 in)
Overall height:
1125 mm (44.3 in)
Seat height:
760 mm (29.9 in)
Wheelbase:
1290 mm (50.8 in)
Ground clearance:
140 mm (5.51 in)
Minimum turning radius:
1750 mm (68.9 in)Weight:With oil and fuel:
130.0 kg (287 lb)Engine:Engine type:
Air cooled 4-stroke, SOHC
Cylinder arrangement:
Forward-inclined single cylinder
Displacement:
123.7 cm³
Bore × stroke:
54.0 × 54.0 mm (2.13 × 2.13 in)
Compression ratio:
10.00 :1
Starting system:
Electric starter and kickstarter
Lubrication system:
Wet sump
Engine oil:Type:
SAE 10W-30, SAE 10W-40, SAE 15W-40,
SAE 20W-40 or SAE 20W-50
Recommended engine oil grade:
API service SG type or higher, JASO
standard MA
Engine oil quantity:
Periodic oil change:
1.00 L (1.06 US qt, 0.88 Imp.qt)Air filter:Air filter element:
Dry elementFuel:Recommended fuel:
Regular unleaded gasoline only
Fuel tank capacity:
12.0 L (3.17 US gal, 2.64 Imp.gal)
Fuel reserve amount:
3.0 L (0.79 US gal, 0.66 Imp.gal)
Fuel injection:Throttle body:
Manufacturer:
MIKUNI
Type/quantity:
AC26-6/1Spark plug (s):Manufacturer/model:
NGK/CR6HSA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)Clutch:Clutch type:
Wet, multiple-discTransmission:Primary reduction system:
Helical gear
Primary reduction ratio:
68/20 (3.400)
Secondary reduction system:
Chain drive
Secondary reduction ratio:
43/14 (3.071)
Transmission type:
Constant mesh 5-speed
Operation:
Left foot operation
Gear ratio:
1st:
37/14 (2.643)
2nd:
32/18 (1.778)
3rd:
25/19 (1.316)
-20 -10 0
10 20 30
40
50 ˚C
SAE 10W-30
SAE 15W-40SAE 20W-40SAE 20W-50
SAE 10W-40SAE 10W-50
U27SE0E0.book Page 1 Friday, February 22, 2008 8:54 AM

INDEX
AAir filter element, cleaning .................... 6-10
Auxiliary light bulb, replacing ................ 6-31BBattery .................................................. 6-27
Brake and clutch levers,
checking and lubricating ..................... 6-23
Brake fluid, changing ............................ 6-20
Brake fluid level, checking .................... 6-19
Brake lever ............................................. 3-5
Brake pads and shoes, checking.......... 6-19
Brake pedal ............................................ 3-6
Brake pedal, checking and
lubricating ........................................... 6-24
Brake pedal free play, adjusting ........... 6-17CCables, checking and lubricating .......... 6-23
Care ........................................................ 7-1
Carrier..................................................... 3-9
Catalytic converters ................................ 3-8
Centerstand and sidestand,
checking and lubricating ..................... 6-24
Clutch lever............................................. 3-5
Clutch lever free play, adjusting ........... 6-16DDimmer switch ........................................ 3-4
Drive chain, cleaning and lubricating .... 6-22
Drive chain slack .................................. 6-21EEngine break-in ...................................... 5-3
Engine idling speed, checking .............. 6-12
Engine oil ................................................ 6-9
Engine trouble warning light ................... 3-2
FFront brake lever free play, checking .... 6-17
Front fork, checking...............................6-25
Fuel ......................................................... 3-7
Fuel consumption, tips for reducing ........ 5-3
Fuel gauge .............................................. 3-3
Fuel tank cap........................................... 3-6
Fuse, replacing...................................... 6-28HHandlebar switches ................................. 3-4
Headlight bulb, replacing....................... 6-29
High beam indicator light......................... 3-2
Horn switch ............................................. 3-4IIdentification numbers ............................. 9-1
Ignition circuit cut-off system ................. 3-10
Indicator and warning lights .................... 3-2KKey identification number ........................ 9-1
Kickstarter ............................................... 3-8MMain switch/steering lock ........................ 3-1
Matte color, caution .................................7-1
Model label .............................................. 9-2NNeutral indicator light .............................. 3-2PPanels, removing and installing .............. 6-6
Parking ....................................................5-4
Part locations .......................................... 2-1
Periodic maintenance and
lubrication chart.....................................6-2
Pre-operation check list........................... 4-2
RRear brake light switch, adjusting ......... 6-18SSafety information ................................... 1-1
Self-diagnosis device .............................. 3-3
Shifting .................................................... 5-2
Shift pedal ............................................... 3-5
Shift pedal, checking............................. 6-18
Shock absorber assemblies, adjusting ... 3-8
Sidestand ................................................ 3-9
Spark plug, checking .............................. 6-7
Specifications.......................................... 8-1
Speedometer unit ................................... 3-2
Starting the engine.................................. 5-1
Start switch ............................................. 3-4
Steering, checking ................................ 6-26
Storage ................................................... 7-3
Swingarm pivots, lubricating ................. 6-25TTachometer............................................. 3-3
Tail/brake light bulb, replacing .............. 6-30
Throttle cable free play, adjusting ......... 6-12
Throttle grip and cable,
checking and lubricating ..................... 6-23
Tires ...................................................... 6-13
Tool kit .................................................... 6-1
Troubleshooting .................................... 6-36
Troubleshooting chart ........................... 6-37
Turn signal indicator light ........................ 3-2
Turn signal light bulb, replacing ............ 6-31
Turn signal switch ................................... 3-4VValve clearance .................................... 6-13
Vehicle identification number .................. 9-1
U27SE0E0.book Page 1 Friday, February 22, 2008 8:54 AM