2006 YAMAHA TTR125 engine

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Page 188 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 8
INSP
ADJ
ENGINE OIL LEVEL INSPECTION
4. Check:
Oil level
Oil level should be between maximum
a and minimum b marks.
Oil level is low → Add oil to proper
level.
NOTE:
When inspecting the oil l

Page 190 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 9
INSP
ADJ
ENGINE OIL REPLACEMENT
5. Install:
Dipstick
6. Start the engine and let it warm up for
several minutes.
7. Turn off the engine and inspect the oil
level once again.
NOTE:
Wait a few mi

Page 192 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 10
INSP
ADJOIL PRESSURE INSPECTION/PILOT AIR SCREW
ADJUSTMENT/ENGINE IDLING SPEED ADJUSTMENT
OIL PRESSURE INSPECTION
1. Check:
Oil pressure
Checking steps:
Slightly loosen the oil pressure check

Page 194 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 11
INSP
ADJ
VALVE CLEARANCE INSPECTION AND ADJUSTMENT
VALVE CLEARANCE INSPECTION AND 
ADJUSTMENT
NOTE:
The valve clearance should be adjusted
when the engine is cool to the touch.
The piston mus

Page 200 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 14
INSP
ADJ
SPARK ARRESTER CLEANING (For USA)
SPARK ARRESTER CLEANING (For USA)
WARNING
Be sure the exhaust pipe and muffler are
cool before cleaning the spark arrester.
Do not start the engine

Page 216 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 22
INSP
ADJ
DRIVE CHAIN SLACK ADJUSTMENT
6. Lubricate:
Drive chain
Drive chain lubricant:
SAE 10W-30 motor oil or suit-
able chain lubricants
DRIVE CHAIN SLACK ADJUSTMENT
1. Elevate the rear whee

Page 220 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 24
INSP
ADJ
REAR SHOCK ABSORBER ASSEMBLY 
INSPECTION
1. Inspect:
Swingarm smooth action
Abnormal noise/unsmooth action →
Grease the pivoting points or repair the
pivoting points.
Damage/oil lea

Page 228 of 610

YAMAHA TTR125 2006  Owners Manual 3 - 28
INSP
ADJ
STEERING HEAD INSPECTION AND ADJUSTMENT
2. Inspect:
Bearing free play
Exist play → Replace.
STEERING HEAD INSPECTION AND 
ADJUSTMENT
1. Elevate the front wheel by placing a suit-
ab