424. When servicing a tool, use only identicalreplacement parts. Follow instructions inthe Maintenance section of this manual.Use of unauthorized parts or failure to followMaintenance instructions may create a risk ofelectric shock or injury.USE PROPER EXTENSION CORD: Make sure your extension cord is in good condition.When using an extension cord, be sure to use one heavy enough to carry the current yourproduct will draw. An undersized cord will cause a drop in line voltage resulting in loss ofpower and overheating. Table 1 shows the correct size to use depending on cord length andnameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage num-ber, the heavier the cord.SPECIFIC SAFETY RULES USB008-3DO NOT let comfort or familiarity with product (gained fromrepeated use) replace strict adherence to circular saw safetyrules. If you use this tool unsafely or incorrectly, you can sufferserious personal injury.1. DANGER! Keep hands away from cuttingarea and blade. Keep your second handon auxiliary handle, or motor housing. Ifboth hands are holding the saw, they cannotbe cut by the blade.Keep your body positioned to either sideof the saw blade, but not in line with thesaw blade. KICKBACK could cause the sawto jump backwards. (See “Causes and Oper-ator Prevention of Kickback”)Do not reach underneath the work. Theguard can not protect you from the bladebelow the work. Do not attempt to remove cutmaterial when blade is moving.CAUTION: Blades coast after turn off. Waituntil blade stops before grasping cut material.2. Check lower guard for proper closingbefore each use. Do not operate saw iflower guard does not move freely andclose instantly. Never clamp or tie thelower guard into the open position. If sawis accidentally dropped, lower guard may bebent. Raise the lower guard with the retract-ing Lever and make sure it moves freely anddoes not touch the blade or any other part, inall angles and depths of cut.To check lower guard, open lower guard byhand, then release and watch guard closure.Also check to see that retracting Lever doesTable 1: Minimum gage for cordAmpere Rating Volts Total length of cord in feet120 V 25 ft. 50 ft. 100 ft. 150 ft.More Than Not More Than AWG0 6 18 16 16 146 10 18 16 14 1210 12 16 16 14 1212 16 14 12 Not Recommended