Spark Plugs; Recommended Spark Plugs; Carburetor Synchronization - Honda Gold Wing GL1200D Shop Manual

~HONDA
~
GL 12000- GL1200A
SPARK PLUGS
Remove the plug cap cover.
Disconnect the spark plug caps and clean any dirt
from around the spark plug bases.
Remove the spark plugs.
RECOMMENDED SPARK PLUGS;
NGK ND I
Standard
DPR8EA9
X24EPR·U9
For cold climiate
DPR7EA-9
X22EPR-U9
{Below
SoC,
41"Fl
For extended
DPR9EA·9 X27EPR·U9
high speed riding
Visually inspect the spark plug electrodes for wear.
The center electrode should have square edges and
the side electrode should have a constant thickness.
Discard the spark plug if there is apparent wear or
if the insulator is cracked or chipped. If the spark
plug deposits can be removed by sandblasting, the
spark plug can be reused. Measure the spark plug
gaps using a wire-type feeler gauge.
SPAR K PLUG GAP:
0.8-0.9 mm (0.031-0.035 in)
Adjust by bending the side electrode carefully.
With the plug washer attached, thread each spark
plug in by hand to prevent crossthreading. Continue
tightening by hand until the spark plug bottoms.
Then, tighten the spark plugs another 1/2 turn with
a spark plug wrench to compress the plug washer.
Connect the spark plug caps.
Install the spark plug cap cover.
CARBURETOR SYNCHRONIZATION
NOTE:
Perform this maintenance with the engine at
normal operating temperature, transmission
in neutral, and motorcycle on its center stand.
Remove the plugs from the carburetor intake pipes
and install the vacuum gauge adaptors. Connect the
vacuum gauges.
Remove the right and leh fairing lower covers and
inner covers. (section 20).
,
MAINTENANCE
~ IDE
ELECTRODE
0.8-0.9 mm ,
(0.031-0.035 in) CENTER
ELECTRODE
VACUUM GAUGE ADAPTORS
07510-3000100.07510-3000200
_CI_f __
3-9