Page 2 of 72
Engine start procedure
Engine oil replacement
V-belt inspection
Load limit Before pushing start button, make sure to
apply the Front or Rear Brake and that the
Sidestand is retracted.
Engine oil replacement : Every 2000 km.
Recommended oil : SAE20W - 50 type
SF Class Motor Oil
Convenience hook : 1 kg, Helmet box: 5 kg
5MX-F835Y-00
Periodic maintenance must be performed
by any authorized Yamaha Dealer (Refer to
the Owner's Manual for details.)
Page 36 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
6
EAUT0016*
Engine oil and oil strainer The engine oil level should be checked
before each ride. In addition, the oil
must be changed and the oil strainer
cleaned at the intervals specified in the
periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the motorcycle on the cen-
terstand.NOTE:_ Make sure that the motorcycle is posi-
tioned straight up when checking the oil
level. A slight tilt to the side can result in
a false reading. _2. Start the engine, warm it up for
several minutes, and then turn it
off.3. Wait a few minutes until the oil set-
tles, remove the oil filler cap, wipe
the dipstick clean, insert it back
into the oil filler hole (without
screwing it in), and then remove it
again to check the oil level.
NOTE:_ The engine oil should be between the
minimum and maximum level marks. _4. If the engine oil is below the mini-
mum level mark, add sufficient oil
of the recommended type to raise
it to the correct level.
1. Engine oil filler cap
1. Dipstick
2. Maximum level mark
3. Minimum level mark
U5MXE0.book Page 9 Thursday, December 20, 2001 2:08 PM
Page 51 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-24
6
EAU00732
Checking the brake fluid level Insufficient brake fluid may allow air to
enter the brake system, possibly caus-
ing it to become ineffective.
Before riding, check that the brake fluid
is above the minimum level mark and
replenish if necessary. A low brake flu-
id level may indicate worn brake pads
and/or brake system leakage. If the
brake level is low, be sure to check the
brake pads for wear and the brake sys-
tem for leakage.Observe these precautions:
When checking the fluid level,
make sure that the top of the mas-
ter cylinder is level by turning the
handlebars.
Use only the recommended quali-
ty brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking perfor-
mance.
NOTE:_ If DOT 4 is not available, DOT 3 can be
used. _
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor braking performance.
Be careful that water does not en-
ter the master cylinder when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.
As the brake pads wear, it is nor-
mal for the brake fluid level to
gradually go down. However, if the
brake fluid level goes down sud-
denly, have a Yamaha dealer
check the cause.
1. Minimum level mark
Recommended brake fluid: DOT 4
U5MXE0.book Page 24 Thursday, December 20, 2001 2:08 PM
Page 66 of 72

7-1
7
EAK00000
7-MOTORCYCLE CLEANING AND STORAGE
EAK01302*
A. CLEANINGFrequent, thorough cleaning of your
motorcycle will not only enhance its ap-
pearance but will improve its general
performance and extend the useful life
of many components.
1. Rinse the dirt and degreaser off
with a garden hose.
EUU34602
CAUTION:_Excessive hose pressure may cause
water seepage and deterioration of
wheel bearings, front fork, brakes,
transmission seals and electrical
parts.2. After cleaning the motorcycle, dry
all surfaces with a chamois, clean
towel, or soft absorbent cloth.
3. Automotive-type wax may be ap-
plied to all painted and chrome-
plated surfaces. When finished,
start the engine and let it idle for
several minutes.
EAK00700*
B. STORAGELong term storage (60 days or more) of
your motorcycle will require some pre-
ventive procedures to guard against
deterioration. After thoroughly cleaning
the motorcycle, prepare for storage as
follows:
1. Drain the fuel tank, fuel lines, and
carburetor float bowl(s).
2. Lubricate all control cables.
3. Block up the frame to raise both
wheels off the ground.
4. Tie a plastic bag over the exhaust
pipe outlet to prevent moisture
from entering.
5. If storing in a humid or salt-air at-
mosphere, coat all exposed metal
surfaces with a light film of oil. Do
not apply oil to any rubber parts or
the seat cover.6. Remove the battery and charge it.
Store it in a dry place and re-
charge it once a month. Do not
store the battery in an excessively
warm or cold place (less than 0°C
or more than 30°C).
EUU05800
NOTE:_Make any necessary repairs before
storing the motorcycle.
U5MXE0.book Page 1 Thursday, December 20, 2001 2:08 PM
Page 67 of 72

8-1
8
EAU01038
8-SPECIFICATIONS
Specifications CS-01E
Model AT115
Dimensions
Overall length 1,935 mm
Overall width 675 mm
Overall height 1,070 mm
Seat height 755 mm
Wheelbase 1,280 mm
Ground clearance 135 mm
Minimum turning radius 1,900 mm
Basic weight (with oil and full
fuel tank)
103 kg
Maximum load*
116 kg
* Total weight of rider, passenger, cargo and accessories
Engine
Engine type Forced air-cooled 4-stroke,
SOHC
Cylinder arrangement Forward inclined single cylinder
Displacement 113.7 cm
3
Bore × stroke 50.0 × 57.9 mm
Compression ratio 8.8:1
Starting system Electric and kickstarter
Lubrication system Wet sumpEngine oil
Ty p eSAE 20W-50 API Service “SF”
type motor oil
Capacity
Periodic oil change 0.8 L
Total amount (dry engine) 0.9 L
Final transmission oil
Type SAE 10W-40 API Service “SE”
type motor oil
Quantity 0.1 L
Air filter
Dry element
Fuel
Type REGULAR GASOLINE
Fuel tank capacity 4.9 L
Carburetor
Manufacturer MIKUNI
Model × quantity BS25 × 1
Spark plug
Manufacturer/Type NGK / CR7HSA
Gap 0.6–0.7 mm
Clutch type
V-belt automatic
U5MXE0.book Page 1 Thursday, December 20, 2001 2:08 PM
Page 69 of 72
SPECIFICATIONS
8-3
8
Spring/shock absorbers
Front Coil spring / oil damper
Rear Coil spring / oil damper
Wheel travel
Front 80 mm
Rear 55 mm
Electrical
Ignition system DC. C.D.I.
Charging system
Type A.C. magneto
Standard output 14 V, 105 W@ 5,000 r/min
Battery
Model Local made
Voltage, capacity 12 V, 7 Ah
Headlight bulb type
Incandesce bulb
Bulb voltage, wattage
× quantity
Headlight 12 V, 25/25 W × 2
Tail/brake light 12 V, 5/21 W × 1
Turn signal light 12 V, 10 W × 4
Meter lighting 12 V, 1.7 W × 1
12 V, 3.4 W × 1
High beam indicator light 12 V, 1.7 W × 1
Turn signal indicator light 12 V, 3.4 W × 2
Fuse
10 A
U5MXE0.book Page 3 Thursday, December 20, 2001 2:08 PM
Page 71 of 72
Engine start procedure
Engine oil replacement
V-belt inspection
Load limit Before pushing start button, make sure to
apply the Front or Rear Brake and that the
Sidestand is retracted.
Engine oil replacement : Every 2000 km.
Recommended oil : SAE20W - 50 type
SF Class Motor Oil
Convenience hook : 1 kg, Helmet box: 5 kg
5MX-F835Y-00
Periodic maintenance must be performed
by any authorized Yamaha Dealer (Refer to
the Owner's Manual for details.)