Yamaha TDM850 1996 Service Manual page 282

3. Spark plug
S Check the spark plug condition.
S Check the spark plug type.
S Check the spark plug gap.
Refer to "SPARK PLUG INSPECTION" in
CHAPTER 3.
Spark plug gap:
0.8 X 0.9 mm
4. Ignition spark gap
S Disconnect the spark plug cap from spark
plug.
S Connect the ignition checker
Spark plug cap
2
S Turn the main switch to "ON".
S Check the ignition spark gap
S Crank the engine by pushing the starter
switch, and increase the spark gap until a mis-
fire occurs.
Minimum spark gap:
6.0 mm
5. Spark plug cap resistance
S Remove the spark plug cap.
S Connect the pocket tester (Ω
spark plug cap.
:
CORRECT
1
as shown.
a
.
OUT OF
SPECIFICATION
OR NO SPARK
1k) to the
IGNITION SYSTEM
Standard spark plug:
DPR8EA-9/X24EPR-U9
NGK /NIPPONDENSO
INCORRECT
Repair or replace spark plug.
MEETS SPECIFICATION
Ignition system is good.
8-6
ELEC