2007 YAMAHA YBR125 engine

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Page 29 of 79

YAMAHA YBR125 2007  Owners Manual PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
PREVENTIVE MAINTENANCE SCHEDULE
VA LV E S
SPARK PLUG
CARBURETOR
AIR FILTER
FUEL LINE
FUEL FILTER
ENGINE OIL
ENGINE OIL
FILTER SCREEN
BRAKE-FRONT &
REAR
Check

Page 33 of 79

YAMAHA YBR125 2007  Owners Manual A. Spark plug gapSpark plug inspectionThe spark plug is an important engine
component and is easy to inspect.
The condition of the spark plug can
indicate the condition of the engine.
The ideal color

Page 34 of 79

YAMAHA YBR125 2007  Owners Manual NOTE :
ALWAYS CHANGE ENGINE OIL AT RECOMMENDED INTERVALS
FOR OPTIMUM ENGINE PERFORMANCE AND ENGINE LIFE
1. Engine oil filler capEngine oil1. Oil level measurement
a. Place the Motorcycle on the
center

Page 35 of 79

YAMAHA YBR125 2007  Owners Manual ALWAYS USE ONLY THE RECOMMENDED GRADE OF ENGINE OIL
1 . Engine oil drain plugc. Remove the drain plug and drain
the oil.
d. Reinstall the drain plug and
tighten it to the specified
torque.Tightening t

Page 37 of 79

YAMAHA YBR125 2007  Owners Manual CAUTION :
CAUTION :
 Make sure the air filter is
properly seated in the air filter
case.
 The engine should never be run
without the air filter installed.
Excessive piston and/or
cylinder wear may res

Page 38 of 79

YAMAHA YBR125 2007  Owners Manual NOTE :
NOTE :
NOTE :
Idle speed adjustmentA diagnostic tachometer must be
used for this procedure.
1. Attach the tachometer. Start the
engine and warm it up for a few
minutes at approximately 1,300
to

Page 39 of 79

YAMAHA YBR125 2007  Owners Manual KEEP RECOMMENDED TYRE PRESSURE IN BOTH THE TYRES
2. Locknut
3. Adjusting nut
1. Loosen the locknut.
2. Turn the adjusting nut in direction
a to increase free play and in
direction b to decrease free
p

Page 49 of 79

YAMAHA YBR125 2007  Owners Manual CAUTION :
Front fork inspectionSecurely support the Motorcycle
so there is no danger of it falling
over.
1. Visual check
Check for scratches or damage
on the inner tube and traces of oil
leakage from
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