Baja Motorsports BR150-1 Operator's Manual - Manual (Page 38)

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NOTE: This Go-Kart uses resistor-type spark plug to avoid jamming
electronic parts. Improper spark plug selection may cause electronic
interference with your Karts ignition system, resulting in vehicle performance
problems. Use recommended 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 proper functioning spark plug, keep the plug free of carbon.
Remove carbon from the plug with a wire or pin, and adjust the gap to 0.24
- 0.28 inch (0.6~0.7mm) for good ignition. Use a thickness gauge to check the
gap.
CAUTION
Improper installation of the spark plug could damage your Kart.
An overly tight or cross threaded spark plug will damage the aluminum
threads of the cylinder head.
Carefully turn the spark plug by hand into the threads. If the spark plug
is new, tighten it with a wrench about ½ 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 could damage your kart if it entered an open spark plug hole of cylinder
head.
Dirt could damage engine parts that move.
Cover the spark plug hole while the spark plug is out of the hole.
SPARK PLUG
Spark plug types
Meija A7RTC, NGK CR7HS,
Champion RZ10YC
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