Page 29 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-2
6
EAU00473
Periodic maintenance and lubrication chart
CP-03ENO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (
×1,000 km)
0.5 2 4 8 12
1*Fuel line
Check fuel hoses and vacuum hose for cracks or damage.√√√√
2 Spark plugCheck condition.
Clean and regap.√√√√√
Replace if necessary.√√√
3*ValvesCheck valve clearance.
Adjust.√√√√√
4 Air filter element
Clean. Replace if necessary.√√√√
5V-belt case air filter
elementsClean. Replace if necessary.√√√√
6*BatteryCheck electrolyte level and specific gravity.
Make sure that the breather hose is properly routed.√√√√
7*Front brakeCheck operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-3.)
Replace brake pads if necessary.√√√√√
8*Rear brakeCheck operation and adjust brake lever free play.
Replace brake shoes if necessary.√√√√√
9*WheelsCheck runout, spoke tightness and for damage.
Tighten spokes if necessary.√√√√
10*Wheel bearings
Check bearing for looseness or damage.√√√√
11*SwingarmCheck operation and for excessive play.
Lubricate with lithium-soap based grease, every 24,000 km.√√√√
12*Steering bearingsCheck bearing play and steering for roughness.
Lubricate with lithium-soap-based grease, every 12,000 km.√√√√√
13*Chassis fasteners
Make sure that all nuts, bolts and screws are properly tightened.√√√√
14 Sidestand/centerstandCheck operation.
Lubricate.√√√√
15*Front fork
Check operation and for oil leakage.√√√√
U5MXE0.book Page 2 Thursday, December 20, 2001 2:08 PM
Page 45 of 72
PERIODIC MAINTENANCE AND MINOR REPAIR
6-18
6 1. Loosen the locknut.
2. To increase the throttle cable free
play, turn the adjusting nut in di-
rection a. To decrease the throttle
cable free play, turn the adjusting
nut in direction b.
3. Tighten the locknut.
NOTE:_After adjusting the throttle free play, be
sure to place the cable cover in the
original position._
EAU00637
Adjusting the valve clearance The valve clearance changes with use,
resulting in improper air-fuel mixture
and/or engine noise. To prevent this
from occurring, the valve clearance
must be adjusted by a Yamaha dealer
at the intervals specified in the periodic
maintenance and lubrication chart.
1. Throttle cable free play adjusting nut
2. Locknut
3. Cable cover
c. Throttle cable free playU5MXE0.book Page 18 Thursday, December 20, 2001 2:08 PM
Page 64 of 72
PERIODIC MAINTENANCE AND MINOR REPAIR
6-37
6
EAU01008
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
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.
U5MXE0.book Page 37 Thursday, December 20, 2001 2:08 PM
Page 65 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-38
6
EAU03473
Troubleshooting chart
EW000125
WARNING
_ Keep away open flames and do not smoke while checking or working on the fuel system. _
CT-1FE
Check the fuel level in
the fuel tank.1. Fuel
There is
enough fuel.
There is
no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the
electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition.
Have a Yamaha dealer
check the vehicle.
Remove the spark plug
and check electrodes.3. Ignition
Wet
Dry
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the vehicle.
The engine does not start. Have a
Yamaha dealer check the vehicle.The engine does not start.
Check the battery.Open the throttle halfway and
operate the electric starter.
Operate the
electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check fluid, recharge,
check connections.
U5MXE0.book Page 38 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