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Inspection and maintenance – Baja Motorsports BA90-2 User Manual

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NOTE: This ATV uses resistor-type spark plug to avoid jamming electronic

parts. Improper spark plug selection may cause electronic interference with

your ATVs ignition system, resulting in the 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 ATV.

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 ATV 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.

INSPECTION AND MAINTENANCE

Spark Plug Types

NGK C7HSA, AC S102F, CHAMPION Z10YC,

BOSCH U4BC, AUTOLIGHT 2795

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