4-1/2 INCH ANGLE GRINDER Model # 944 bit.ly/wenvideo IMPORTANT: Your new tool has been engineered and manufactured to WEN’s highest standards for easy operation, dependability and maximum user safety. When properly cared for, this product will supply rugged, trouble-free performance. Pay close attention to the rules for safe operation, warnings and cautions. If you use your tool properly and for its intended purpose, you will enjoy years of safe, reliable service.
TABLE OF CONTENTS Technical Data General Safety Rules Specific Safety Rules For Grinding Electrical Information Know Your Grinder Assembly Operation Maintenance Exploded View and Parts List Warranty 2 3 4 6 7 7 8 9 10 12 TECHNICAL DATA Model Number: Motor: Speed: Disc Size: Tool Arbor Size: Inner Flange Adapter Size: Cord length: Product Weight: Product Dimensions: 2 944 120 V, 60 Hz, 7 A 11,000 RPM 4.5 inch diameter, 7/8 inch arbor size 5/8 inch 5/8 to 7/8 inch 6 feet 4.
GENERAL SAFETY RULES Safety is a combination of common sense, staying alert and knowing how your item works. SAVE THESE SAFETY INSTRUCTIONS. WARNING: To avoid mistakes and serious injury, do not plug in your tool until the following steps have been read and understood. 1. READ and become familiar with this entire instruction manual. LEARN the tool’s applications, limitations, and possible hazards. 2. AVOID DANGEROUS CONDITIONS. Do not use power tools in wet or damp areas or expose them to rain.
GENERAL SAFETY RULES 15. DO NOT OVERREACH. Keep proper footing and balance at all times. Wear oil-resistant rubber-soled footwear. Keep the floor clear of oil, scrap, and other debris. 16. MAINTAIN TOOLS PROPERLY. ALWAYS keep tools clean and in good working order. Follow instructions for lubricating and changing accessories. 17. CHECK FOR DAMAGED PARTS. Check for alignment of moving parts, jamming, breakage, improper mounting, or any other conditions that may affect the tool’s operation.
SPECIFIC RULES FOR GRINDING 7. Do not use a grinding wheel that is larger than the maximum recommended size for your tool. Avoid using worn down and damaged wheels from larger grinders. Wheels intended for larger angle grinders are not suitable for the high speed of a small angle grinder, making these wheels burst easily. 8. Do not use depressed hub grinding wheels for cut-off operations. Depressed hub wheels are not intended for side loading and may shatter under certain loads. 9.
ELECTRICAL INFORMATION DOUBLE INSULATION Double insulation is a concept in safety in electric power tools, which eliminates the need for the usual three-wire grounded power cord. All exposed metal parts are isolated from the internal metal motor components with protecting insulation. Double insulated tools do not need to be grounded. WARNING: The double insulated system is intended to protect the user from shock resulting from a break in the tool’s internal insulation.
KNOW YOUR GRINDER Side Handle Spindle Lock Air Vent Gear Box Motor Housing ON/OFF Switch Handle Thread Holes Wheel Guard Grinding Disc ASSEMBLY WHEEL GUARD INSTALLATION (FIG. A) WARNING: Use the wheel guard with disc grinding wheels. Always close the latch to secure the guard. Keep the guard between you and the wheel. Do not direct guard opening toward your body. 1. The position of the guard can be adjusted to accommodate the operation being performed.
ASSEMBLY GRINDING DISC ASSEMBLY 3 1. Disconnect the tool from its power supply. Be sure that the wheel guard has been properly installed before assembling the grinding disc. 2. Place the inner flange (Fig. B - 1) onto the spindle first so that the grooves align with the spindle nut. 3. Next, slide the grinding disc (Fig. B - 2) onto the spindle. 4. Screw the outer flange (Fig. B - 3) into place with the protruding lip facing downwards. This lip should fit snugly into the center of the grinding wheel.
OPERATION SELECTING THE GRINDING DISC Before using a grinding wheel, make sure that its maximum safe operating speed is more than 11,000 RPM. Do not exceed the recommended wheel diameter. Make sure it has a 7/8 inch arbor size to fit the supplied inner flange. 1 Grinding wheels should be carefully selected in order to maximize efficiency. Wheels vary in abrasiveness, bond, harness, grit size and structure. The correct type of wheel to use is determined by the job at hand.
EXPLODED VIEW AND PARTS LIST 17 18 19 20 16 21 22 23 15 24 25 14 26 27 13 28 29 30 12 31 11 32 33 10 9 34 8 35 36 7 40 37 41 38 6 39 5 44 42 43 4 45 3 46 2 1 10 48 49 47
EXPLODED VIEW AND PARTS LIST No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Part 944-001 944-002 944-003 944-004 944-005 944-006 944-007 944-008 944-009 944-010 944-011 944-012 944-013 944-014 944-015 944-016 944-017 944-018 944-019 944-020 944-021 944-022 944-023 944-024 944-025 Description Outer Flange Inner Flange Wheel Guard Output Shaft Dustproof Cover Screw M4X13 Front Cover Spacing Ring O Ring 6001 Bearing Bearing Cover Screw M4X10 Big Gear Needle Bearing Gear Box Screw St5X25
LIMITED TWO YEAR WARRANTY WEN Products is committed to building tools that are dependable for years. Our warranties are consistent with this commitment and our dedication to quality. LIMITED WARRANTY OF WEN CONSUMER POWER TOOLS PRODUCTS FOR HOME USE GREAT LAKES TECHNOLOGIES, LLC (“Seller”) warrants to the original purchaser only, that all WEN consumer power tools will be free from defects in material or workmanship for a period of two (2) years from date of purchase.
