Suzuki Intruder VZ1500 Service Manual page 36

0B-7 Maintenance and Lubrication:
Spark Plug Inspection and Cleaning
Inspect spark plug
Every 6 000 km (4 000 miles, 12 months)
Heat Range
1) Remove the spark plugs. Refer to "Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-4)".
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
Standard
NGK CR6E
DENSO U20ESR-N
3) After finishing the spark plug inspection, reinstall the
removed parts.
Carbon Deposits
1) Remove the spark plugs. Refer to "Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-4)".
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 plugs. Refer to "Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-4)".
2) Measure the spark plug gap using a thickness
B940H20206006 gauge.
Adjust the spark plug gap if necessary.
Spark plug gap
0.7 – 0.8 mm (0.028 – 0.030 in)
Cold type
CR7E
U22ESR-N
3) After finishing the spark plug inspection, reinstall the
removed parts.
Electrodes Condition
1) Remove the spark plugs. Refer to "Spark Plug Cap
and Spark Plug Removal and Installation in Section
1H (Page 1H-4)".
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.
Confirm the thread size and reach when
replacing the plug. If the reach is too short,
carbon will be deposited on the screw
portion of the plug hole and engine damage
may result.
3) After finishing the spark plug inspection, reinstall the
I649G1020010-02 removed parts.
Fuel Line Inspection
Inspect fuel line
Every 6 000 km (4 000 miles, 12 months)
Inspect the fuel line in the following procedures:
1) Remove the seat. Refer to "Exterior Parts Removal
and Installation in Section 9D (Page 9D-5)".
2) Remove the fuel tank mounting bolts. Refer to "Fuel
Tank Removal and Installation in Section 1G
(Page 1G-9)".
3) Lift up the fuel tank.
CAUTION
!
I940H1020071-01
B940H20206007