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36 Safety Information
ELECTRIC SYSTEM DAMAGE PREVENTION
Electric and Electronic Systems
Always wear eye protection when working around batteries to prevent
the risk of injury due to contact with sulfuric acid or an explosion.
Never disconnect any charging unit circuit or battery circuit cable from the
battery when the charging unit is operating. A spark can cause the flammable
vapor mixture of hydrogen and oxygen to explode.
To prevent potential sparks from igniting combustible gases produced by some
batteries, attach the negative (—) terminal last when hooking up and remove
the negative terminal first after the engine has started. Check regularly around
the engine and engine compartment for loose or frayed wires. Have all loose
or frayed electrical wires tightened, repaired or replaced before operating the
vehicle.
Grounding Practices
Proper grounding for vehicle and engine electrical and electronic systems is
necessary for proper vehicle and engine performance and reliability. Improper
grounding will result in uncontrolled and unreliable electrical paths.
Uncontrolled engine electrical circuit paths can result in damage to main
bearings, crankshaft journals surfaces and aluminum components.
Uncontrolled electrical circuit paths can also cause electrical noise which may
degrade vehicle and radio performance.
Operating engines without the engine-to-frame ground strap installed can
cause damage to the engine. To prevent electrical discharge damage, check to
make sure the engine's electrical system has an engine-to-frame ground strap.
All ground connections should be tight and free of corrosion.
USA22978.bk.book Page 36 Wednesday, July 9, 2008 9:09 AM