Suzuki LT-Z90, Owner'S Manual

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6-5
NOTE: If the above-named plugs are
not available, consult your Suzuki
dealer.
NOTE: This vehicle uses resistor-type
spark plug to avoid jamming elec-
tronic parts. Improper spark plug
selection may cause electronic inter-
ference with your vehicle ignition sys-
tem, resulting in vehicle performance
problems. Use only the recom-
mended spark plugs.
To install a spark plug, turn it in as far
as possible with your fingers, then
tighten it with a wrench.
To maintain a hot, strong spark, keep
the plug free of carbon. Remove car-
bon from the plug and adjust the gap
to 0.6 – 0.7 mm (0.024 – 0.028 in) for
good ignition. Use a thickness gauge
to check the gap.
NGK DENSO REMARKS
CR6HSA U20FSR-U Standard
CR7HSA U22FSR-U
If the standard
plug is apt to
overheat, replace
with this plug.
CAUTION
Improper installation of the spark
plug can damage your ATV.
An overly tight or cross threaded
plug will damage the aluminum
threads of the cylinder head.
Carefully turn the spark plug by
hand into the treads. If the spark
plug is new, tighten it with a
wrench about 1/2 turn past finger
tight. If you are reusing the old
spark plug, tighten it with a
wrench about 1/8 turn past finger
tight.
CAUTION
Dirt can damage your ATV if it
enters an open spark plug hole.
Dirt can damage engine parts that
move.
Cover the spark plug hole while
the spark plug is out of the hole.
0.6 – 0.7 mm