Spark Plug Inspection - Yamaha TT600R Service Manual

SPARK PLUG INSPECTION

SPARK PLUG INSPECTION
1. Remove:
•
Seat
•
Fuel tank
See section "SEAT, FUEL TANK AND
REAR COWLING".
2. Disconnect:
•
Spark plug cap
3. Remove:
•
Spark plug (1)
CAUTION:
1
Before removing the spark plug, use com-
pressed air to blow away any dirt accumulat-
ed in the spark plug wells to prevent it from
falling into the cylinder.
CAUTION:
When removing the spark plug, be careful not
to drop foreign objects inside the engine.
4. Inspect:
•
Type of spark plug
Incorrect
Standard spark plug:
DPR8EA-9 (N.G.K.) or DPR9EA-9 (N.G.K.)
5. Inspect:
•
Electrodes (1)
Wear and tear/damage
•
Insulator (2)
Normal insulator (2) colour is light tan.
6. Clean the spark plug with a suitable tool and a
steel brush.
7. Measure:
•
Spark plug electrode gap (a)
Use a wire or thickness gauge.
Out of specification
3-9
INSP
Replace.
Regap.
Electrode gap:
0.8 ~ 0.9 mm
ADJ
Replace.