2007 YAMAHA YBR125 air condition

WARNINGPERIODIC MAINTENANCE AND MINOR REPAIR
Periodic inspection, adjustment and
lubrication will keep your Motorcycle
in the safest and most efficient
condition possible. Safety is an
obligation of the Motorcycle owner.
The maintenance and lubrication
schedule chart should be considered
strictly as a guide to general
maintenance and lubrication
intervals. YOU MUST TAKE INTO
CONSIDERATION THAT
WEATHER, TERRAIN,
GEOGRAPHICAL LOCATIONS,
AND A VARIETY OF INDIVIDUAL
USES ALL TEND TO DEMAND
THAT EACH OWNER ALTER THIS
TIME SCHEDULE TO SHORTER
INTERVALS TO MATCH THE
ENVIRONMENT. The most impor-
tant points of Motorcycle inspection,
adjustment, and lubrication are
explained in the following pages.If you are not familiar with
Motorcycle service, this work
should be done by a YAMAHA
dealer.
1. Tool kitTool kitThe service information included in
this manual is intended to provide
you, the owner, with the necessary
information for completing some of
your own preventive maintenance
and minor repairs. The tools
provided in the owner's tool kit are to
assist you in the performance of
periodic maintenance. However,
some other tools such as a torque
wrench are also necessary to
perform the maintenance correctly.
6-1
1
1

KEEP YOUR MOTORCYCLE TUNED IN PERFECT CONDITION
WARNING
NOTE :PERIODIC MAINTENANCE AND MINOR REPAIRIf you do not have necessary tools
required during a service operation,
take your Motorcycle to a YAMAHA
dealer for service.
Modifications to this Motorcycle
not approved by YAMAHA may
cause loss of performance, and
render it unsafe for use. Consult
a YAMAHA dealer before
attempting any changes.
6-2

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
PREVENTIVE MAINTENANCE SCHEDULE
VA LV E S
SPARK PLUG
CARBURETOR
AIR FILTER
FUEL LINE
FUEL FILTER
ENGINE OIL
ENGINE OIL
FILTER SCREEN
BRAKE-FRONT &
REAR
Check valve clearances, adjust if necessary.
Check condition, gap;
Clean and reset if necessary.
Check idle speed, Choke lever operation.
Clean, inspect & lubricate. (replace if necessary)
Check fuel hose, for cracks or damage.
Replace if necessary.
Check for free flow of petrol, cleanliness of filter bowl,
replace if necessary.
Replace with recommended oil - Yamalube SG Grade
(Warm engine before draining)
Wash with petrol
Check operation./ Adjust if necessary.
Grease the brake cam.
ITEM OPERATION SNO
1
2
3
5 4
6
7
8
9
*
WHEELS 13FRONT & REAR
REAR ARM PIVOT CLUTCH
12 11BRAKE SHOES-
10
Check runout, spoke tightness, damage;
Correct it, if necessary. Check for wear, replace if necessary.
Check alignment marks on Push Lever and
Tighten with specified Torque if necessary Check Rear Arm assembly for looseness. Crankcase L.H. Adjust if necessary.
30 Days OR
500-700 KmAFTER EVERY DAYS OR KMS
REPLACE EVERY 10,000 km90 Days OR
2500-2700 Km180 Days OR
4500-5000 KmAFTER
EVERY
2000 KMS

A. Spark plug gapSpark plug inspectionThe spark plug is an important engine
component and is easy to inspect.
The condition of the spark plug can
indicate the condition of the engine.
The ideal color on the white insulator
around the center electrode is a
medium-to-light tan color for a
Motorcycle that is being riddennormally. Do not attempt to diagnose
any problems yourself. Instead, take
the Motorcycle to a YAMAHA dealer.
You should periodically remove and
inspect the spark plug because heat
and deposits will cause the spark plug
to slowly break down and erode. If
electrode erosion becomes exces-
sive, or if carbon and other deposits
are excessive, you should replace the
spark plug with the specified plug.
Before installing the spark plug,
measure the electrode gap with a wire
thickness gauge; adjust the gap to
specification as necessary.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
A.- Spark plug gap: 0.8 ±0.1 mm
When installing the plug, always
clean the gasket surface and use a
new gasket. Wipe off any grime from
the threads and tighten the spark plug
to the specified torque.
Tightening torque:
Spark plug:
12 ft-lb (1.75 m-kg)NOTE :If a torque wrench is not available
when you are installing a spark plug,
a good estimate of the correct
torque is 1/4 to 1/2 turn past finger
using a box spanner.
AALWAYS USE ONLY THE STANDARD RECOMMENDED MAKE AND TYPE OF
SPARK PLUG
Specified spark plug:
P-RA7HC-(CHAMPION)

CAUTION :
CAUTION :
Make sure the air filter is
properly seated in the air filter
case.
The engine should never be run
without the air filter installed.
Excessive piston and/or
cylinder wear may result.
Dirty Element Air Cleaner
causes excessive fuel
consumption and loss of
power.
Clean Element Air Cleaner after
every 2000 Kms.
The Element Air Cleaner should
be cleaned and lubricated more
frequently (every 1000 kms), if
Motorcycle is operated in very
dusty (e.g. unpaved, dust laden
roads) conditions.
Carburetor adjustmentThe carburetor is a vital part of the
engine and requires very sophisti-
cated adjustments. Most adjust-
ments should be left to a YAMAHA
dealer who has the professional
knowledge and experience to do so.
However, the following may be
serviced by the owner as part of
routine maintenance.
The carburetor is set at the
YAMAHA factory after many
tests. If the settings are changed,
poor engine performance and
damage may result.
PERIODIC MAINTENANCE AND MINOR REPAIR`
6-11
7. Pull the air filter elements over
the frame and install the air filter
in the case.
8. Install the Spring Wire
9. Install the air filter case cover
and panelCAUTION :NOTE :Ensure no distoration/proper
positioning of felt Seal 1 , if
damaged contact YAMAHA Dealer.Do not twist Element Air Cleaner.

WARNING
WARNING
Minimum tyre
tread depth :
(front and rear)
1.0 mm
Tyre inflation pressure should be
checked and adjusted when the
temperature of the tyre equals the
ambient air temperature. Tyre
inflation pressure must be adjust-
ed according to total weight of
cargo, rider, passenger, and
accessories (fairing, saddlebags,
etc. approved for this model), and
vehicle speed.Proper loading of your Motorcycle
is important for several character-
istics of your Motorcycle, such as
handling, braking, performance
and safety. Do not carry loosely
packed items that can shift.
Securely pack your heaviest items
close to the center of the Motorcy-
cle, and distribute the weight
evenly from side to side. Properly
adjust the suspension for your
load, and check the condition and
pressure of your tyres. NEVER
OVERLOAD YOUR
MOTORCYCLE. Make sure the
total weight of the cargo, rider,
passenger, and accessories
(fairing, saddlebags, etc.
approved for this model) does not
exceed the maximum load of the
Motorcycle. Operation of an over-
loaded Motorcycle could cause
tyre damage, an accident, or even
injury.2. Tyre inspection
Always check the tyres before
operating the Motorcycle. If a tyre
tread shows crosswise lines
(minimum tread depth), if the tyre
has a nail or glass fragments in it,
or if the side wall is cracked,
contact a dealer
immediately and have the tyre
replaced.YAMAHAPERIODIC MAINTENANCE AND MINOR REPAIR
6-14
Front Rear Cold tyre pressure:
Single Rider25 psi
25 psi (1.75kg/cm )
2
(1.75kg/cm )
2(2.25kg/cm )
2
(2.50kg/cm )
2
33 psi
36 psi
With Pillion Rider
Front tyre size:
2.75-18” 4PR
Rear tyre size:
3.00-18” 6PR

WARNING1. It is dangerous to ride with a
worn-out tyre. When a tyre
tread begins to show lines,
have a YAMAHA dealer replace
the tyre immediately.
WheelsTo ensure maximum performance,
long service, and safe operation,
note the following:
1. Always inspect the wheels before
a ride. Check for cracks, bends or
warpage of the wheel. Be sure the
spokes are tight and undamaged.
If any abnormal condition exists in
a wheel, consult a YAMAHA
dealer. Do not attempt even small
repairs to the wheel. If a wheel is
deformed or cracked, it must be
replaced.
2. Tyres and wheels should be
balanced whenever either one is
changed or replaced. Failure to
have a wheel balanced can result
in poor performance, adverse
handling characteristics, and
shortened tyre life.3. Ride at moderate speeds after
changing a tyre since the tyre
surface must first be broken in for
it to develop its optimal
characteristics.PERIODIC MAINTENANCE AND MINOR REPAIR
6-15

Drive chain lubricationThe 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. The drive chain should be
lubricated every 5,000 km.
2. To clean the chain thoroughly,
remove it from the Motorcycle,
dip it in solvent, and clean out as
much dirt as possible. Then, take
the chain out of the solvent to dry
it, and then dip the chain in oil of
20W40. Remove the chain and
hang it on a peg for a while till the
excess oil drips down completely.
Then using a clean cloth wipe the
chain.
Cable inspection and
lubricationDamage to the outer housing of
cables may lead to internal rusting
and interfere with the cable
movement. Replace damaged
cables as soon as possible to
prevent unsafe conditions.
Lubricate the cables with anti-
corrosive oil and cable ends. If a
cable does not operate smoothly,
ask a YAMAHA dealer to replace it.
Recommended lubricant:
20W40 Type SG
Throttle cable and grip
lubricationThe throttle twist grip assembly
should be greased at the time that
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.
PERIODIC MAINTENANCE AND MINOR REPAIR
6-21
WARNING