Page 53 of 116
6-2
PERIODIC MAINTENANCE AND MINOR REPAIR
6 Pull up the mat, and then remove the
owner’s tool kit.
The service information included in
this manual and the tools provided in
the owner’s tool kit are intended to
assist you in the performance of pre-
ventive maintenance and minor
repairs. However, additional tools
such as a torque wrench may be nec-
essary to perform certain mainte-
nance work correctly.
2
1
1. Mat
2. Owner’s tool kit
NOTE:
If you do not have the tools or experi-
ence required for a particular job,
have a Yamaha dealer perform it for
you.
EW000063
w
Modifications not approved by
Yamaha may cause loss of perfor-
mance and render the vehicle
unsafe for use. Consult a Yamaha
dealer before attempting any
changes.
5SJ-28199-E1 7/11/02 11:03 AM Page 51
Page 56 of 116

6-5
PERIODIC MAINTENANCE AND MINOR REPAIR
6
EAU03884
NOTE:
8The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
8Hydraulic brake service
9Regularly check and, if necessary, correct the brake fluid level.
9Every two years replace the internal components of the brake master cylinders and calipers, and change the
brake fluid.
9Replace the brake hoses every four years and if cracked or damaged.
20*Engine oil strainer•Clean.√
21
*Cooling system•Check coolant level and vehicle for coolant leakage.√√√√ √
•Change.Every 3 years
22 Final transmission oil•Check vehicle for oil leakage.√√ √
•Change.√√√
23
*V-belt•Replace.Every 20,000 km
24
*Front and rear brake
switches•Check operation.√√√√√ √
25 Moving parts and cables•Lubricate.√√√√ √
26
*Throttle grip housing
and cable•Check operation and free play.
•Adjust the throttle cable free play if necessary.
•Lubricate the throttle grip housing and cable.√√√√ √
27
*Lights, signals and
switches•Check operation.
•Adjust headlight beam.√√√√√ √ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (× 1,000 km)
ANNUAL
CHECK
1 10203040
5SJ-28199-E1 7/11/02 11:03 AM Page 54
Page 93 of 116

6-42
PERIODIC MAINTENANCE AND MINOR REPAIR
6 4. Remove the defective bulb by
pulling it out.
5. Insert a new bulb into the socket.
6. Install the lens by installing the
screws.
EC000108
cC
Do not overtighten the screws,
otherwise the lens may break.
7. Install the cowling.
1
1. Bulb
EAU03087
TroubleshootingTroubleshootingAlthough Yamaha scooters receive a
thorough inspection before shipment
from the factory, trouble may occur
during operation. Any problem in the
fuel, compression, or ignition sys-
tems, for example, can cause poor
starting and loss of power.
The following troubleshooting charts
represent quick and easy procedures
for checking these vital systems your-
self. However, should your scooter
require any repair, take it to a
Yamaha dealer, whose skilled techni-
cians have the necessary tools,
experience, and know-how to service
the scooter properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look
like Yamaha parts, but they are often
inferior, have a shorter service life
and can lead to expensive repair
bills.
5SJ-28199-E1 7/11/02 11:03 AM Page 91
Page 104 of 116
8-1
EAU01038
SPECIFICATIONS
8
SpecificationsSpecificationsModel YP250A
Dimensions
Overall length 2,145 mm
Overall width 770 mm
Overall height 1,350 mm
Seat height 730 mm
Wheelbase 1,535 mm
Ground clearance 120 mm
Minimum turning radius 2,700 mm
Basic weight (with oil and full
fuel tank)177 kg
Engine
Engine type Liquid-cooled 4-stroke, SOHC
Cylinder arrangement Forward inclined single
cylinder
Displacement 249 cm
3
Bore ×Stroke 69.0 ×66.8 mm
Compression ratio 10:1
Starting system Electric starter
Lubrication system Wet sumpEngine oil
Type
Recommended engine oil
classification API Service SE, SF, SG type
or higher
cC
Do not use oils with a diesel specification of “CD” or oils of a
higher quality than specified. In addition, do not use oils
labeled “ENERGY CONSERVING II” or higher.
Quantity
Periodic oil change 1.2 L
Total amount (dry engine) 1.4 L
–10° 0° 10° 20° 30°
40°
SAE 10W/30
SAE 10W/40
SAE 20W/40
SAE 20W/50
–20°
SAE 15W/40 50°C
5SJ-28199-E1 7/11/02 11:03 AM Page 102