Spark Plug - Suzuki AN400 Service Manual

SPARK PLUG

Inspect at 6 000 km (4 000 miles, 6 months) and repla-
ce every 12 000 km (7 000 miles, 12 months) thereafter.
REMOVAL
• Remove the left side leg shield. (!7-15)
• Disconnect the spark plug cap 1 and remove the spark plug.
% 09930-10121: Spark plug socket wrench set
Hot type
NGK CR6E
ND U20ESR-N
CARBON DEPOSIT
• Inspect to see the carbon deposit on the plug.
• If the carbon is deposited, remove it with a spark plug cleaner
machine or carefully using a tool with a pointed end.
SPARK PLUG GAP
• Measure the plug gap with a thickness gauge if it is correct. If
not, adjust it to the following gap.
$ Spark plug gap: Standard: 0.7 – 0.8 mm (0.028 – 0.031 in)
% 09900-20803: Thickness gauge
ELECTRODE'S CONDITION
• Inspect 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, damaged thread,
etc.
"
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 dam-
age may result.
Standerd Cold type
CR7E CR8E
U22ESR-N U24ESR-N
PERIODIC MAINTENANCE 2-7