Maintenance and Lubrication: 0B-9
6) Install the camshafts. Refer to “Engine Top Side
Assembly in Section 1D (Page 1D-21)”.
7) Rotate the engine so that the tappet is depressed
fully. This will squeeze out oil trapped between the
shim and the tappet that could cause an incorrect
measurement, then check the clearance again to
confirm that it is within the specified range.
8) After finishing the tappet clearance adjustment,
reinstall the removed parts. Refer to “Engine Top
Side Assembly in Section 1D (Page 1D-21)”.
Spark Plug Replacement
B931G20206004
Replace spark plug
Every 6 000 km (4 000 miles)
Refer to “Spark Plug Cap and Spark Plug Removal and
Installation in Section 1H (Page 1H-3)”.
Spark Plug Inspection and Cleaning
B931G20206005
Inspect spark plug
Every 2 000 km (1 200 miles, 6 months)
Heat Range
1) Remove the spark plug. Refer to “Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-3)”.
2) Check spark plug heat range by observing electrode
color.
If it appears white or glazed, replace the spark plug
with colder type one.
Heat range
3) After finishing the spark plug inspection, reinstall the
removed parts.
Carbon Deposits
1) Remove the spark plug. Refer to “Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-3)”.
2) Check carbon deposits on the spark plug.
If carbon is deposited, remove it using a spark plug
cleaner machine or carefully use a tool with a
pointed end.
3) After finishing the spark plug inspection, reinstall the
removed parts.
Spark Plug Gap
1) Remove the spark plug. Refer to “Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-3)”.
2) Measure the spark plug gap using a wire gauge.
Adjust the spark plug gap if necessary.
Spark plug gap
0.7 – 0.8 mm (0.028 – 0.030 in)
3) After finishing the spark plug inspection, reinstall the
removed parts.
Electrodes Condition
1) Remove the spark plug. Refer to “Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-3)”.
2) Check to see the worn or burnt condition of the
electrodes.
If it is extremely worn or burnt, replace the plug. And
also replace the plug if it has a broken insulator, or
damaged thread.
3) After finishing the spark plug inspection, reinstall the
removed parts.
CAUTION
!
Check the thread size and reach when
replacing the spark plug. If the reach is too
short, carbon will be deposited on the screw
portion of the spark plug hole and engine
damage may result.
Standard Cold type
NGK CR6E CR7E
DENSO U20ESR-N U22ESR-N
I649G1020010-02
I831G1020092-01
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