4-13
GB
When fitting the plug, always clean the gas-
ket surface and use a new gasket. Wipe off
any dirt from the threads and screw in the
spark plug to the correct torque.
NOTE:
If a torque-wrench is not available when you
are fitting a spark plug, a good estimate of
the correct torque is 1/4 to 1/2 a turn past fin-
ger-tight. Have the spark plug adjusted to the
correct torque as soon as possible with a
torque-wrench.
1
Spark plug gap
2
Spark plug I.D. mark (NGK)
Spark plug torque:
Refer to “SPECIFICATIONS”, page 4-1.
Initial of spark plug
Plug wrench size
I.D. mark
B
21 mm (13/16in.)
C/BK
16 mm (5/8in.)
D
18.3 mm (23/32in.)
903022
q
w
69R-9-71 (GB,F,ES) 4B 3/23/02 2:35 PM Page 4
Summary of Contents for 25B
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