Page 9 of 70

TABLE OF CONTENTS
SAFETY INFORMATION
................... 1-1
DESCRIPTION
................................... 2-1
Left view ........................................... 2-1
Right view ......................................... 2-2
Controls and instruments ................. 2-3
INSTRUMENT AND CONTROL
FUNCTIONS
........................................ 3-1
Handlebar switch ............................. 3-1
Power reduction plate ...................... 3-1
Shift pedal ....................................... 3-1
Brake lever ...................................... 3-2
Brake pedal ..................................... 3-2
Fuel tank cap ................................... 3-2
Fuel ................................................. 3-3
Fuel tank breather hose .................. 3-4
2-stroke engine oil ........................... 3-4
Fuel cock ......................................... 3-5
Starter (choke) lever “
1
” ................ 3-6
Kickstarter ....................................... 3-6
Seat ................................................. 3-7
Shock absorber assembly ............... 3-7
FOR YOUR SAFETY –
PRE-OPERATION CHECKS
............... 4-1
Pre-operation check list ................... 4-2
OPERATION AND IMPORTANT
RIDING POINTS
.................................. 5-1
Starting and warming up a cold
engine .......................................... 5-1
Starting a warm engine ................... 5-2
Shifting ............................................ 5-2
Engine break-in ............................... 5-3
Parking ............................................ 5-4
PERIODIC MAINTENANCE AND
ADJUSTMENT
.................................... 6-1
Owner’s tool kit ................................ 6-1
Periodic maintenance and lubrication
chart ............................................. 6-2
Checking the spark plug .................. 6-5
Removing the power reduction
plate ............................................. 6-6
Transmission oil .............................. 6-7
Cleaning the air filter element ......... 6-8
Cleaning the spark arrester ............. 6-9
Adjusting the carburetor ................ 6-10
Adjusting the engine idling
speed ......................................... 6-11
Adjusting the throttle cable free
play ............................................ 6-11
Tires .............................................. 6-12
Spoke wheels ................................ 6-13
Adjusting the brake lever free
play ............................................ 6-14
Adjusting the brake pedal free
play ............................................ 6-15Checking the front and rear brake
shoes ..........................................6-15
Drive chain slack ............................6-16
Cleaning and lubricating the drive
chain ...........................................6-18
Checking and lubricating the
cables .........................................6-18
Checking and lubricating the throttle
grip and cable .............................6-18
Adjusting the Autolube pump .........6-19
Checking and lubricating the brake
and shift pedals ..........................6-19
Checking and lubricating the brake
lever ............................................6-20
Checking and lubricating the
sidestand ....................................6-20
Checking the front fork ...................6-20
Checking the steering ....................6-21
Checking the wheel bearings .........6-22
Supporting the motorcycle .............6-22
Front wheel ....................................6-23
Rear wheel .....................................6-25
Troubleshooting .............................6-27
Troubleshooting chart ....................6-28
MOTORCYCLE CARE AND
STORAGE
...........................................7-1
Matte color caution ..........................7-1
Care .................................................7-1
Storage ............................................7-3
Page 34 of 70

PERIODIC MAINTENANCE AND ADJUSTMENT
6-3
1
2
3
4
5
6
7
8
9
8*Tires
Check tread depth and for damage.Replace if necessary.Check air pressure.Correct if necessary.
9*Wheel bearingsCheck bearings for smooth operation.Replace if necessary.
10 *Steering bearingsCheck bearing assemblies for looseness.Moderately repack with lithium-soap-based
grease.
11Drive chainCheck chain slack/alignment and condi-
tion.Adjust and lubricate chain with Yamaha
chain and cable lube thoroughly.Every rideRemove and clean.
12 *Chassis fastenersCheck all chassis fitting and fasteners.Correct if necessary.
13Sidestand pivotCheck operation.Apply lithium-soap-based grease lightly.
14 *Front forkCheck operation and for oil leakage.Replace if necessary.
15 *Shock absorber
assemblyCheck operation and for oil leakage.Replace if necessary.
16 *CarburetorCheck engine idling speed and starter
operation.Clean.Replace if necessary. NO. ITEM CHECK OR MAINTENANCE JOBINITIAL THEREAFTER EVERY
10
hours20
hours40
hours80
hours40
hours80
hours160
hours
Page 52 of 70
PERIODIC MAINTENANCE AND ADJUSTMENT
6-21
1
2
3
4
5
6
7
8
9
NOTICE
ECA10590
If any damage is found or the front
fork does not operate smoothly,
have a Yamaha dealer check or re-
pair it.
EAU23282
Checking the steering
Worn or loose steering bearings may
cause danger. Therefore, the operation
of the steering must be checked as fol-
lows at the intervals specified in the pe-
riodic maintenance and lubrication
chart.
1. Place a stand under the engine to
raise the front wheel off the
ground. (See page 6-1 for more in-
formation.)
WARNING! To avoid
injury, securely support the ve-
hicle so there is no danger of it
falling over.
[EWA10751]
2. Hold the lower ends of the front
fork legs and try to move them for-
ward and backward. If any free
play can be felt, have a Yamaha
dealer check or repair the steering.