Tuning - Yamaha YZ125X 2022 Owner's Service Manual

ENGINE...........................................................................................................10-1
CARBURETOR SETTING ........................................................................10-1
ATMOSPHERIC CONDITIONS AND CARBURETOR SETTINGS ..........10-1
TEST RUN ................................................................................................10-1
EFFECTS OF THE SETTING PARTS ON THE THROTTLE VALVE
OPENING ................................................................................................10-2
MAIN JET ADJUSTMENT ........................................................................10-2
PILOT AIR SCREW ADJUSTMENT .........................................................10-2
PILOT JET ADJUSTMENT .......................................................................10-2
JET NEEDLE ADJUSTMENT ...................................................................10-3
JET NEEDLE GROOVE POSITION ADJUSTMENT ................................10-3
RELATIONSHIP WITH THROTTLE OPENING........................................10-3
CARBURETOR SETTING PARTS ...........................................................10-4
ROAD CONDITION AND EXAMPLES OF CARBURETOR SETTING.....10-5
SPECIFICATIONS OF JET NEEDLE .......................................................10-5
EXAMPLES OF CARBURETOR SETTING DEPENDING ON
SYMPTOM...............................................................................................10-5
CHANGE OF THE HEAT RANGE OF SPARK PLUGS............................10-7
CHASSIS ........................................................................................................10-8
SELECTION OF THE SECONDARY REDUCTION RATIO
(SPROCKET)...........................................................................................10-8
DRIVE AND REAR WHEEL SPROCKETS SETTING PARTS.................10-8
TIRE PRESSURE .....................................................................................10-8
FRONT FORK SETTING ..........................................................................10-9
CHANGE IN AMOUNT AND CHARACTERISTICS OF FORK OIL ..........10-9
SETTING OF SPRING AFTER REPLACEMENT.....................................10-9
FRONT FORK SETTING PARTS ...........................................................10-10
REAR SUSPENSION SETTING.............................................................10-10
CHOOSING SET LENGTH.....................................................................10-10
SETTING OF SPRING AFTER REPLACEMENT...................................10-11
REAR SHOCK ABSORBER SETTING PARTS .....................................10-11
SUSPENSION SETTING (FRONT FORK) .............................................10-13
SUSPENSION SETTING (REAR SHOCK ABSORBER)........................10-14

TUNING

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