TABLE OF CONTENTSSAFETY INFORMATION ..................1-1
Further safe-riding points ................1-5
DESCRIPTION ..................................2-1
Left view ..........................................2-1
Right view ........................................2-3
Controls and instruments.................2-5
INSTRUMENT AND CONTROL
FUNCTIONS.......................................3-1
Immobilizer system .........................3-1
Main switch/steering lock ................3-2
Indicator lights and
warning lights ..............................3-4
Speedometer ..................................3-5
Tachometer ....................................3-6
Multi-function display ......................3-6
Anti-theft alarm (optional) .............3-11
Handlebar switches ......................3-11
Front brake lever ..........................3-12
Rear brake lever ...........................3-13
ABS (for ABS models) ..................3-13
Fuel tank cap ................................3-14
Fuel ...............................................3-15
Catalytic converters ......................3-16
Securing bracket ...........................3-17
Seat ..............................................3-17
Storage compartments .................3-18
Travel trunk ..................................3-19
Adjusting the shock absorber
assemblies ................................3-20Sidestand ..................................... 3-21
Ignition circuit cut-off system ........ 3-21
Auxiliary DC jack .......................... 3-23
FOR YOUR SAFETY –
PRE-OPERATION CHECKS............. 4-1
OPERATION AND IMPORTANT
RIDING POINTS................................. 5-1
Starting the engine ......................... 5-1
Starting off ...................................... 5-2
Acceleration and deceleration ........ 5-3
Braking ........................................... 5-3
Tips for reducing fuel
consumption ............................... 5-4
Engine break-in .............................. 5-4
Parking ........................................... 5-5
PERIODIC MAINTENANCE AND
ADJUSTMENT................................... 6-1
Owner’s tool kit ............................... 6-2
Periodic maintenance chart for the
emission control system ............. 6-3
General maintenance and
lubrication chart .......................... 6-4
Removing and installing
the cowling and panel ................. 6-8
Checking the spark plug ................. 6-9
Engine oil ..................................... 6-10
Final transmission oil .................... 6-13
Coolant ......................................... 6-14Air filter and V-belt case air filter
elements ................................... 6-16
Adjusting the throttle grip free
play ........................................... 6-17
Valve clearance ........................... 6-18
Tires ............................................. 6-18
Cast wheels ................................. 6-20
Checking the front and
rear brake lever free play ......... 6-21
Checking the front and
rear brake pads ........................ 6-21
Checking the brake fluid level ...... 6-22
Changing the brake fluid .............. 6-24
Checking and lubricating
the cables ................................. 6-24
Checking and lubricating
the throttle grip and cable ......... 6-24
Lubricating the front and
rear brake levers ...................... 6-25
Checking and lubricating the
centerstand and sidestand ....... 6-25
Checking the front fork ................. 6-26
Checking the steering .................. 6-27
Checking the wheel bearings ....... 6-27
Battery ......................................... 6-27
Replacing the fuses ..................... 6-29
Replacing a headlight bulb .......... 6-30
Replacing a front turn signal light
bulb ........................................... 6-31
Replacing a tail/brake light bulb or
a rear turn signal light bulb ....... 6-31U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM
DESCRIPTION
2-1
2
EAU32220
Left viewYP125R/YP125RA1. Headlight (page 6-30)
2. Fuel tank cap (page 3-14)
3. Owner’s tool kit (page 6-2)
4. V-belt case air filter element (page 6-16)
5. Rear storage compartment (page 3-18)
6. Air filter element (page 6-16)
7. Shock absorber assembly spring preload adjusting ring (page 3-20)8. Engine oil drain bolt (page 6-10)
9. Centerstand (page 6-25)
10.Sidestand (page 3-21)U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM
DESCRIPTION
2-2
2 YP125RA Business Edition / YP125R Sports
1. Headlight (page 6-30)
2. Fuel tank cap (page 3-14)
3. Owner’s tool kit (page 6-2)
4. V-belt case air filter element (page 6-16)
5. Rear storage compartment (page 3-18)
6. Air filter element (page 6-16)
7. Shock absorber assembly spring preload adjusting ring (page 3-20)
8. Engine oil drain bolt (page 6-10)
9. Centerstand (page 6-25)10.Sidestand (page 3-21)
U2ABE2E0.book Page 2 Thursday, August 30, 2012 2:36 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-1
6
EAUS1823
Periodic inspection, adjustment, and lu-
brication will keep your vehicle in the
safest and most efficient condition pos-
sible. Safety is an obligation of the vehi-
cle owner/operator. The most important
points of vehicle inspection, adjust-
ment, and lubrication are explained on
the following pages.
The intervals given in the periodic
maintenance charts should be simply
considered as a general guide under
normal riding conditions. However, de-
pending on the weather, terrain, geo-
graphical location, and individual use,
the maintenance intervals may need to
be shortened.
WARNING
EWA10321
Failure to properly maintain the ve-
hicle or performing maintenance ac-
tivities incorrectly may increase
your risk of injury or death during
service or while using the vehicle. If
you are not familiar with vehicle ser-
vice, have a Yamaha dealer perform
service.
WARNING
EWA15122
Turn off the engine when performing
maintenance unless otherwise
specified.●
A running engine has moving
parts that can catch on body
parts or clothing and electrical
parts that can cause shocks or
fires.
●
Running the engine while ser-
vicing can lead to eye injury,
burns, fire, or carbon monoxide
poisoning – possibly leading to
death. See page 1-3 for more in-
formation about carbon monox-
ide.WARNING
EWA10330
This scooter is designed for use on
paved roads only. If this scooter is
operated in abnormally dusty, mud-
dy or wet conditions, the air filter el-
ement should be cleaned or
replaced more frequently, otherwise
rapid engine wear may result. Con-
sult a Yamaha dealer for proper
maintenance intervals.
WARNING
EWA15460
Brake discs, calipers, drums, and
linings can become very hot during
use. To avoid possible burns, let
brake components cool before
touching them.
U2ABE2E0.book Page 1 Thursday, August 30, 2012 2:36 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-4
6
EAU17718
General maintenance and lubrication chart 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 Air filter element Replace.√√
2V-belt case air filter
element Clean.√√√√
3*Front brake Check operation, fluid level and
vehicle for fluid leakage.√√√√√√
Replace brake pads. Whenever worn to the limit
4*Rear brake Check operation, fluid level and
vehicle for fluid leakage.√√√√√√
Replace brake pads. Whenever worn to the limit
5*Brake hoses Check for cracks or damage.
Check for correct routing and
clamping.√√√√√
Replace. Every 4 years
6*Brake fluid Replace. Every 2 years
7*Wheels Check runout and for damage.√√√√
8*Tires Check tread depth and for dam-
age.
Replace if necessary.
Check air pressure.
Correct if necessary.√√√√√
9*Wheel bearings Check bearing for looseness or
damage.√√√√
U2ABE2E0.book Page 4 Thursday, August 30, 2012 2:36 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-6
6
EAU38262
TIP●
Engine air filter and V-belt air filters
This model’s engine air filter is equipped with a disposable oil-coated paper element, which must not be cleaned with
compressed air to avoid damaging it.
The engine air filter element needs to be replaced and the V-belt air filter elements need to be serviced more frequent-
ly when riding in unusually wet or dusty areas.
20*Cooling system Check coolant level and vehicle
for coolant leakage.√√√√√
Change coolant. Every 3 years
21Final transmission
oil Check vehicle for oil leakage.√√ √
Change.√√√
22*V- b e l t Replace. When the V-belt replacement indicator flashes [every 18000 km (10500 mi)]
23*Front and rear brake
switches Check operation.√√√√√√
24Moving parts and
cables Lubricate.√√√√√
25*Throttle grip Check operation.
Check throttle grip free play, and
adjust if necessary.
Lubricate cable and grip housing.√√√√√
26*Lights, signals and
switches Check operation.
Adjust headlight beam.√√√√√√ 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)U2ABE2E0.book Page 6 Thursday, August 30, 2012 2:36 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-16
6
EAUM2242
Air filter and V-belt case air fil-
ter elements The air filter element should be re-
placed and the V-belt case air filter ele-
ment should be cleaned at the intervals
specified in the periodic maintenance
and lubrication chart. Service the air fil-
ter elements more frequently if you are
riding in unusually wet or dusty areas.
Replacing the air filter element
1. Place the scooter on the center-
stand.
2. Remove the air filter case cover by
removing the screws.3. Pull the air filter element out.
4. Insert a new air filter element into
the air filter case.
5. Install the air filter case cover by in-
stalling the screws.
Cleaning the V-belt case air filter el-
ement
1. Remove the V-belt case air filter
covers by removing the screws.
2. Remove the air filter element, and
then blow out the dirt with com-
pressed air as shown.
3. Check the air filter element for
damage and replace it if neces-
sary.1. Air filter case cover
2. Screw
3. Air filter element1
2 2ZAUM0662
3
1. V-belt case air filter cover
2. Screw
1. Screw
2. V-belt case air filter cover
1. V-belt case air filter element
1
ZAUM0706
U2ABE2E0.book Page 16 Thursday, August 30, 2012 2:36 PM
PERIODIC MAINTENANCE AND ADJUSTMENT
6-17
6 4. Install the air filter element with the
colored side facing outward.
5. Install the V-belt case air filter cov-
ers by installing the screws.
NOTICE: Make sure that each fil-
ter element is properly seated in
its case. The engine should nev-
er be operated without the filter
elements installed, otherwise
the piston(s) and/or cylinder(s)
may become excessively worn.
[ECA10531]EAU48432
Adjusting the throttle grip free
play The throttle grip free play should mea-
sure 3.0–5.0 mm (0.12–0.20 in) at the
inner edge of the throttle grip. Periodi-
cally check the throttle grip free play
and, if necessary, adjust it as follows.TIPThe engine idling speed must be cor-
rectly adjusted before checking and ad-
justing the throttle grip free play.1. Slide the rubber cover back.
2. Loosen the locknut.3. To increase the throttle grip free
play, turn the adjusting nut in direc-
tion (a). To decrease the throttle
grip free play, turn the adjusting
nut in direction (b).
4. Tighten the locknut and then slide
the rubber cover to its original po-
sition.1. Throttle grip free play
1. Rubber cover
2. Locknut
3. Adjusting nut
1b a
3 2
U2ABE2E0.book Page 17 Thursday, August 30, 2012 2:36 PM