Craftsman 3030gSC Manual De Usuario

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Safety Precautions 
 
 
SAFETY FIRST 
 
 
 
 
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SAFETY FIRST! 
This manual describes common test procedures used by experienced 
service technicians. Many test procedures require precautions to avoid 
accidents that can result in personal injury, and/or damage to your 
vehicle or test equipment. Always read your vehicle's service manual 
and follow its safety precautions before and during any test or service 
procedure. ALWAYS observe the following general safety precautions: 
When an engine is running, it produces carbon monoxide, a 
toxic and poisonous gas. To prevent serious injury or death 
from carbon monoxide poisoning, operate the vehicle ONLY 
in a well-ventilated area. 
To protect your eyes from propelled objects as well as hot 
or caustic liquids, always wear approved safety eye 
protection. 
When an engine is running, many parts (such as the coolant 
fan, pulleys, fan belt etc.) turn at high speed. To avoid serious 
injury, always be aware of moving parts. Keep a safe distance 
from these parts as well as other potentially moving objects. 
Engine parts become very hot when the engine is running. 
To prevent severe burns, avoid contact with hot engine 
parts. 
Before starting an engine for testing or trouble-shooting, make 
sure the parking brake is engaged. Put the transmission in 
park (for automatic transmission) or neutral (for manual 
transmission). Block the drive wheels with suitable blocks. 
Connecting or disconnecting test equipment when the 
ignition is ON can damage test equipment and the vehicle's 
electronic components. Turn the ignition OFF before 
connecting the Code Reader to or disconnecting the Code 
Reader from the vehicle’s Data Link Connector (DLC). 
To prevent damage to the on-board computer when taking 
vehicle electrical measurements, always use a digital 
multimeter with at least 10 MegOhms of impedance. 
The vehicle's battery produces highly flammable hydrogen 
gas. To prevent an explosion, keep all sparks, heated items 
and open flames away from the battery. 
Don't wear loose clothing or jewelry when working on an 
engine. Loose clothing can become caught in the fan, 
pulleys, belts, etc. Jewelry is highly conductive, and can 
cause a severe burn if it makes contact between a power 
source and ground. 
 
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