Poulan 358.351080 User Manual - Page 18

: ,.r£:.._i CUSTOMER RESPONSIBILITIES • If chain is too loose, refer to =Chain Adjustment." Loosen bar clamp nuts; then, turn adjusting screw 1/4 turn clockwise. Lift up tip of guide bar to check for sag. Retighten bar clamp nuts. Figure 20. Guide Bar CRRFTSMRN' Tool SHARPENING CHAIF_ure20 (Fig. 21, 22, 23, 24, 25, 26 & 27) WARNING: IMPROPER CHAIN SHARPENING TECHNIQUES ANDIOR ,DEPTH GAUGE MAINTE- KICKBACK, WHICH CAN RESULT IN SERIOUS INJURY. ALWAYS WEAR GLOVES WHEN HANDLING TENHNAEONUCCGEHHAWTINIOL.LTCHIUNETCYRCOEHAUASIEENVTECHNAENTHCOBHUEAGNSHCHEAITROIPSF TOO DULLTO CUTWOOD. CHAIN TERMINOLOGY & PART NAMES Preset Tie Strap Left Hand Cutter . Link Toolsrequired: • Rat fife • .025 depth gauge • 4.5mm round file & file holder Conditionswhich indicatethe need for chain sharpening: • Reduction in size of wood chips.The size of the wood chip wil! decrease as the chain gets duller until it becomes more like a powder than a chip.Note that dead or rottedwood wiltnot producea good chip. • Saw cuts to one side or at an angle. - Saw requires excessiveforce to cut. • Noticeable tossof cuttingspeed. Sharpeninginstructions: • Move on/stop switchto the "Stop"position. • Check chain for proper tension. Adjust chain tension if necessary. (See Chain Tension/Adjustment). • Check and lowerdepthgaugesbeforesharpeningcutters. • Depth gauges shouldbe checked every third sharpen. ing.When cuttingfrozen wood the depth gauges should be checked each time you sharpen the chain. • To check depth gauge, place gauge tool on cutter. If the depth gauge projects above the tool, then file it level to the top of the depth gauge tool.See Figure 21. Depth File Gauge .030" . Figure 21 Rounded Squared Off Comer Right Hand Cutter "_._ _ Guard Tie Strap_ !CHAIN CUTTER PART NAMES Top Plate .......__Gullet _1_ =/ / Depth Gauge Side Plate --_--1_ .{_p;_l_ CHAIN "PITCH" Toe _ !vet Hole CHAIN "GAUGE" Pitch refers to chain mea- surement. A chain's pitch is the distance between any three of its rivets divided by two. Gauge refers to thickness of that portion of drive link which fits into saw bar groove. Right Way " Wrong Way Figure 22 • To sharpen the cutters,position the file holder level (90 °) so that it rests on the top edges of the cutter and depth gauge. See Figure 23. NOTE: The chain has both left and right hand cutters. • Sharpen cutters on one side of the chain first. File from the inside of each cutter to the outside.Then turn your saw around and repeat the process for the other side of the chain. See Figure 24. • File on the fon_vardstroke only.Use 2 or 3 strokes per cutting edge. • Keep the 30 ° line on the file holder parallel to the center of the chain. Reverse procedure for other side. See Figure 25. • Keep all cutters the same length when filing. See Figure 26. • Fite enough to remove any damage to cutting edges (side plate and top plate) of cutter.See Figure 26. ° File chain to meet the specifications shown below. See Figure 27. 18-