Spark Plug - Suzuki GSX1400 Service Manual

SPARK PLUG

SPARK PLUG AND SPARK PLUG CAP REMOVAL
• Remove the seat.
• Remove the fuel tank. (
• Remove all spark plug caps.
• Remove the spark plugs with a spark plug wrench.
HEAT RANGE
• Check to see the heat range of the plug.
If the electrode of the plug is wet appearing or dark color, re-
place the plug with hotter type one. If it is white or glazed ap-
pearing, replace the plug with colder type one.
Standard
Colder type
NOTE:
"R" type spark plug has a resistor located at the center electrode
to prevent radio noise.
CARBON DEPOSITS
• Check to see if there are 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.
SPARK PLUG GAP
• Measure the spark plug gap using a thickness gauge.
• If out of specification, regap the spark plug.
Spark plug gap:
Standard: 0.7 – 0.8 mm (0.028 – 0.031 in)
09900-20803: Thickness gauge
www.GSX1400FE.com
4-48)
NGK DENSO
CR8EK U24ETR
CR9EK U27ETR
PERIODIC MAINTENANCE 2-5
Gap:
0.7 – 0.8 mm
(0.028 – 0.031 in)