belt YAMAHA NEO115 2002 Owners Manual

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 5 of 72

EAU00009
TABLE OF CONTENTS
GIVE SAFETY THE RIGHT OF WAY .................1-1
DESCRIPTION ...................................................2-1
Left view .............................................................2-1
Right view...........................................................2-2
Controls and instruments ...................................2-3
INSTRUMENT AND CONTROL FUNCTIONS ....3-1
Main switch/steering lock ..................................3-1
Indicator lights ...................................................3-2
Speedometer unit ..............................................3-2
Fuel gauge ........................................................3-2
Handlebar switches ...........................................3-3
Front brake lever ...............................................3-4
Rear brake lever ................................................3-4
Fuel tank cap .....................................................3-4
Fuel ...................................................................3-5
Starter (choke) lever ..........................................3-6
Kickstarter .........................................................3-6
Seat ...................................................................3-6
Helmet box ........................................................3-7
Convenience hook .............................................3-8
PRE-OPERATION CHECKS ...............................4-1
Pre-operation check list .....................................4-1OPERATION AND IMPORTANT RIDING
POINTS................................................................5-1
Starting and warming up a cold engine .............5-1
Starting a warm engine .....................................5-2
Starting off .........................................................5-2
Acceleration and deceleration ...........................5-3
Braking ..............................................................5-3
Engine break-in .................................................5-4
Parking ..............................................................5-5
General note ......................................................5-6
PERIODIC MAINTENANCE AND MINOR
REPAIR................................................................6-1
Owner’s tool kit ..................................................6-1
Periodic maintenance and lubrication chart ......6-2
Removing and installing the cowling and
panels ............................................................6-4
Checking the spark plug ....................................6-7
Engine oil and oil strainer ..................................6-9
Final transmission oil .......................................6-11
Cleaning the air filter element, V-belt case
air filter elements, and check hoses ............6-13
Adjusting the carburetor ..................................6-16
Adjusting the engine idling speed ...................6-17
Adjusting the throttle cable free play ...............6-17
Adjusting the valve clearance .........................6-18
1234
56
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Page 6 of 72

TABLE OF CONTENTS
Tires ................................................................ 6-19
Spoke wheels .................................................. 6-21
Checking the front brake lever free play .......... 6-21
Adjusting the rear brake lever free play .......... 6-22
Checking the front brake pads and rear
brake shoes ................................................. 6-23
Checking the brake fluid level ......................... 6-24
Changing the brake fluid ................................. 6-25
Checking the V-belt ......................................... 6-25
Checking and lubricating the cables ............... 6-25
Checking and lubricating the throttle grip
and cable ..................................................... 6-26
Lubricating the front and rear brake levers ..... 6-26
Checking and lubricating the centerstand
and sidestand .............................................. 6-27
Checking the front fork .................................... 6-27
Checking the steering ..................................... 6-28
Checking the wheel bearings .......................... 6-29
Battery ............................................................. 6-29
Replacing the fuse .......................................... 6-31
Replacing a headlight bulb .............................. 6-33
Replacing a front turn signal light bulb ............ 6-34
Replacing the tail/brake light bulb or a rear
turn signal light bulb .................................... 6-35
Troubleshooting .............................................. 6-37
Troubleshooting chart ..................................... 6-38MOTORCYCLE CLEANING AND STORAGE ..... 7-1
A. CLEANING .................................................... 7-1
B. STORAGE ..................................................... 7-1
SPECIFICATIONS ............................................... 8-1
Specifications .................................................... 8-1
CONSUMER INFORMATION.............................. 9-1
Identification numbers ....................................... 9-1
Frame serial number ......................................... 9-1
Engine serial number ........................................ 9-1
789
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Page 7 of 72

1
2
3
4
56
7
8
9
1-1
EAU00021
1-
GIVE SAFETY THE RIGHT OF WAY
Motorcycles are fascinating vehicles, which can give you an unsurpassed feeling of power and
freedom. However, they also impose certain limits, which you must accept; even the best motorcycle
does not ignore the laws of physics.
Regular care and maintenance are essential for preserving value and operating condition of your
motorcycle. Moreover, what is true for the motorcycle is also true for the rider: good performance
depends on being in good shape. Riding under the influence of medication, drugs and alcohol is, of
course, out of the question. Motorcycle riders—more than car drivers—must always be at their mental
and physical best. Under the influence of even small amounts of alcohol, there is a tendency to take
dangerous risks.
Protective clothing is as essential for the motorcycle rider as seat belts are for car drivers and
passengers. Always wear a complete motorcycle suit (whether made of leather or tear-resistant
synthetic materials with protectors), sturdy boots, motorcycle gloves and a properly fitting helmet.
Optimum protective wear, however, should not encourage carelessness. Although full-coverage
helmets and suits, in particular, create an illusion of total safety and protection, motorcyclists will
always be vulnerable. Riders who lack critical self-control run the risk of going too fast and are apt to
take chances. This is even more dangerous in wet weather. The good motorcyclist rides safely,
predictably and defensively—avoiding all dangers, including those caused by others.
Enjoy your ride!
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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.√√√√
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
* Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service.
EAU03057*
NOTE:_ 
From 16,000 km, repeat the maintenance intervals starting from 4,000 km.

Depending on riding conditions, the V-belt replacement interval may vary.

The air filter needs more frequent service if you are riding in unusually wet or dusty areas.

Hydraulic brake system
After disassembling the brake master cylinder, and caliper cylinder, always change the fluid. Regularly check the
brake fluid level and fill reservoir as required.
Replace the oil seals on the inner parts of the brake master cylinder and caliper cylinder every two years.
Replace the brake hose every four years or if cracked or damaged.
_16
*Shock absorber
assembliesCheck operation and shock absorbers for oil leakage.√√√√
17*CarburetorCheck starter (choke) operation.
Adjust engine idling speed.√√√√√
18 Engine oilChange.
Check oil level and vehicle for oil leakage.√√Every 2,000 km
19*Engine oil strainer
Clean.√√
20 Final transmission oilCheck vehicle for oil leakage.√√√√√
Change.√Every 10,000 km
21*V-beltCheck the damage and wear.√√√
Replace. Every 25,000 km (See NOTE.)
22*Front and rear brake
switchesCheck operation.√√√√√
23 Moving parts and cables
Lubricate.√√√√
24*Lights, signals and
switchesCheck operation.
Adjust headlight beam.√√√√√ NO. ITEM CHECK OR MAINTENANCE JOBODOMETER READING (
×1,000 km)
0.5 2 4 8 12
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Page 40 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-13
6
EAUM0058*
Cleaning the air filter element,
V-belt case air filter elements,
and check hoses The air filter and the V-belt case air fil-
ter elements should be cleaned at the
intervals specified in the periodic main-
tenance and lubrication chart. Clean
both filter elements more frequently if
you are riding in unusually wet or dusty
areas. In addition, the air filter check
hoses must be frequently checked and
cleaned if necessary.
Cleaning the air filter element
1. Place the motorcycle on the cen-
terstand.
2. Remove panel A. (See page 6-4
for panel removal and installation
procedures.)3. Remove the air filter case cover by
removing the screws.4. Pull the air filter element out.
1. Air filter case cover
2. Screw (× 5)
1. Air filter element
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Page 41 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-14
6 5. Lightly tap the air filter element to
remove most of the dust and dirt,
and then blow the remaining dirt
out with compressed air.
6. Check the air filter element for
damage and replace it if neces-
sary.
7. Insert the air filter element into the
air filter case.
8. Install the air filter case cover by
installing the screws.
9. Install the panel.Cleaning the V-belt case air filter
elements
1. Remove V-belt case air filter cover
A by removing the bolts.2. Remove V-belt case air filter cover
B by removing the bolts.
1. V-belt case air filter cover A
2. Bolt (× 2)
1. V-belt case air filter cover B
2. Bolt (× 3)
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Page 42 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
63. Remove the air filter elements,
and then blow out the dirt with
compressed air as shown.4. Check each air filter element for
damage and replace them if nec-
essary.
5. Install the air filter elements.
6. Install V-belt case air filter cover B
by installing the bolts.7. Install V-belt case air filter cover A
by installing the bolts.
EC000092*
CAUTION:_ 
Make sure that each filter ele-
ment is properly seated in its
case.

The engine should never be op-
erated without the air filter ele-
ment installed, otherwise the
piston and/or cylinder may be-
come excessively worn.
_
1. Air filter element (× 2)U5MXE0.book Page 15 Thursday, December 20, 2001 2:08 PM

Page 43 of 72

PERIODIC MAINTENANCE AND MINOR REPAIR
6-16
6 To clean the air filter check hoses
1. Check each hose at the bottom of
the air filter case and the V-belt
case for accumulated dirt or water.2. If dirt or water is visible, remove
the hose, clean it, and then install
it.
EAU00629
Adjusting the carburetor The carburetor is an important part of
the engine and requires very sophisti-
cated adjustment. Therefore, most car-
buretor adjustments should be left to a
Yamaha dealer, who has the neces-
sary professional knowledge and expe-
rience. The adjustment described in
the following section, however, may be
serviced by the owner as part of routine
maintenance.
EC000094
CAUTION:_ The carburetor has been set and ex-
tensively tested at the Yamaha fac-
tory. Changing these settings
without sufficient technical knowl-
edge may result in poor perfor-
mance of or damage to the engine. _
1. Check hose (× 2)
1. Check hose
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