Timing Chain Adjustment; Adj - Yamaha TTR250L Service Manual

VALVE CLEARANCE ADJUSTMENT/TIMING CHAIN
ADJUSTMENT/IDLING SPEED ADJUSTMENT
15.Install:
Exhaust pipe
Engine mount stay 1, 2:
30 Nm (3.0 m • kg, 22 ft • lb)
Engine mount stay 3:
64 Nm (6.4 m • kg, 46 ft • lb)
Nut 4, 5:
20 Nm (2.0 m • kg, 14 ft • lb)
Bolt 6:
20 Nm (2.0 m • kg, 14 ft • lb)
16.Install:
Side covers
Seat
Fuel tank
Refer to "SEAT, FUEL TANK AND COV-
ERS".

TIMING CHAIN ADJUSTMENT

Adjustment free.
IDLING SPEED ADJUSTMENT
1.Start the engine and let it warm up for
several minutes.
2.Attach:
Inductive tachometer
To the spark plug lead.
Inductive tachometer:
P/N. YU-8036-A
3.Check:
Engine idling speed
Out of specification → Adjust.
Engine idling speed:
1,250 ~ 1,350 r/min
3 - 13
CHK

ADJ