TOHATSU BFT 150D Owner's Manual page 95

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SIDE ELECTRODE
1.0
1.1 mm
(0.039
SEALING
WASHER
INSULATOR
9. Measure the plug gaps with a
wire-type feeler gauge.
The gaps should be 1.0 – 1.1 mm
(0.039 – 0.043 in). Correct as
necessary by carefully bending
the side electrode.
10. Thread the plugs in by hand to
prevent cross threading.
11. After the spark plugs are seated,
tighten with a spark plug wrench
to compress the washers.
SPARK PLUG TORQUE:
18 N·m (1.8 kgf·m , 13 lbf·ft)
0.043 in)
If installing new spark plugs, tighten
1/2 turn after the spark plugs seat to
compress the washers.
If reinstalling used spark plugs,
tighten 1/8 – 1/4 turn after the spark
plugs seat to compress the washers.
The spark plugs must be securely
tightened. An improperly tightened
plug can become very hot and may
cause engine damage.
12. Push the wire connector onto the
ignition coil. Make sure it locks in
place.
13. Install the ignition coil. Reinstall
the bolt.
14. Repeat this procedure for the
other three spark plugs.
MAINTENANCE
15. Reinstall the covers. When
reinstalling the covers, make sure
not to jam the wire harnesses in
between the covers and engine
case.
93

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