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Facilità d'uso
Remove guide bar from chain saw. 2. Remove sawdust from guide bar groove periodically. Use putty knife or wire (see Figure 21). 3. Clean oil slots after each day of use. 4. Remove burrs from sides of guide bar. Use flat file to make side edges square. Replace guide bar when • bar is bent or cracked • inside groove of bar is badly worn Note: When replacing guide bar, see Replacement Parts and Accessories for proper bar. SHARPENING SAW CHAIN WARNING: Unplug chain saw from power source before servicing. Severe injury or death could occur from electrical shock or body contact with moving chain. WARNING: Cutting edges on chain are sharp. Use protective gloves when handling chain. Keep saw body clean. Use a soft cloth dampened with a mild soap and water mixture. Wipe saw body to clean. CARE OF GUIDE BAR Uneven bar wear causes most guide bar problems. Incorrect sharpening of chain cutter and depth gauge settings often cause this. When bar wears unevenly, it widens guide bar groove (see Figure 20). This causes chain clatter and rivet popping. Saw will not cut straight. Replace guide bar if this occurs. Inspect guide bar before sharpening chain. A worn or damaged guide bar is unsafe. A worn or damaged guide bar will damage chain. It will also make cutting harder. Guide Bar Groove Guide Bar Normal Guide Bar Guide Bar With Uneven Wear Figure 20 - Guide Bar Cross Section Showing Uneven Bar Wear Keep chain sharp. Your saw will cut faster and more safely. A dull chain will cause undue sprocket, guide bar, chain, and motor wear. If you must force chain into wood and cutting creates only sawdust with few large chips, chain is dull. Burr Flat Guide Bar File Oil Slot Cleaning Groove With Putty Knife Figure 21 - Guide Bar Maintenance 18 CLEANING AND MAINTENANCE Items Needed to Sharpen Chain Purchase these items from your local dealer, hardware store, or chain saw supplies outlet. • 5/32" round file • Depth gauge tool • File guide • Vise • Medium sized flat file Sharpening Cutters Use file guide for 30° filing. 1. Adjust chain for proper tension (see Saw Chain Tension Adjustment). 2. Clamp guide bar in vise to hold saw steady. Note: Do not clamp chain. 3. Press 5/32" round file (attached to file guide) into groove between top plate and depth gauge on chain. File guide should rest on both top plate and depth gauge (see Figure 23). Note: File at midpoint of guide bar. Filing Direction30° Guide Mark File Guide 5/32" Round File Note: This illustration shows file guide placement and filing direction for sharpening cutters on left side of chain. Figure 22 - File and File Guide Placement On Chain Depth Gauge (right Depth Gauge (left Right Side of ChainGrooveside of chain) Top Plate (right side of chain) side of chain) Groove Top Plate (left side of chain) Figure 23 - Chain Part Locations 4. Hold file guide level. Make sure 30° mark on file guide is parallel to center of guide bar (see Figure 22). This will insure that you file cutters at 30° angle. 5. File from inside towards outside of cutter until sharp. Only file in this one direction (see Figure 22). Note: Two or three strokes with file should sharpen cutter. 6. After each cutter is sharpened, move chain forward to sharpen next cutter. File all cutters on one side of chain. 7. Move to other side of chain and repeat process. Filing Cutter Depth Gauges The cutter depth gauge clearance is reduced as cutters are sharpened. After every second or third sharpening, reset cutter depth gauges. 1. Place depth gauge tool (.025") firmly across top of two cutters. Make sure depth gauge enters slot in depth gauge tool (see Figure 24). 2. Use medium flat file. File depth gauge level with depth gauge tool. 3. Remove depth gauge tool. With flat file, round off front corner of cutter depth gauge (see Figure 25). After several hand filings, have authorized service center or sharpening service machine sharpen chain. This will insure even filing. Replacing Saw Chain Replace chain when cutters are too worn to sharpen or when chain breaks. Only use replacement chain noted in this manual. Always include new drive sprocket when replacing chain. This will maintain proper driving of chain. Note: For proper chain and drive sprocket, see Replacement Parts and Accessories. Flat File Depth Gauge Slot Depth Gauge Tool Depth Gauge Figure 24 - Depth Gauge Tool On Chain Front Corner .025" .635 mm Figure 25 - Round Off Front Corner Of Depth Gauge ENGLISH 19 REPLACEMENT CHAINS Replacement saw chains may be available at your local hardware or home improvement store. The following list gives the specifi cations for replacement chains. All chains will be .050 gauge, 3/8 pitch. 10" chains have 42 drive links 12" chains have 48 drive links 14" chains have 52 drive links 16" chains have 58 drive links You may also order the replacement saw chains from the "Online Outlet" at com using the part number listed in the illustrated parts list on pag...
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