Évaluations - 5, GPA: 4.2 ( )

Fabricant : Homelite Taille : 2.54 mb Nom Fichier : Langue d'enseignement:

3. Wear gloves when handling the chain and bar. These components are sharp and may contain burrs. 4. Remove the bar mounting nuts using a combination wrench or 5/8 in. spanner. 5. Remove the clutch cover and the outer guide bar plate. BAR MOUNTING NUTS COMBINATION WRENCH CLUTCH COVER GUIDE BAR PLATE BAR MOUNTING NUTS Fig. 41 RUN POSITION Fig. 42 Fig. 43 MAINTENANCE UK - Page 27 6. Lay out the saw chain in a loop and straighten any kinks. The cutters should face in the direction of chain rotation. If they face backwards, turn the loop over. See Figure 45. 7. Place the chain drive links into the bar groove as shown in figure 46. 8. Position the chain so there is a loop at the back of the bar. 9. Hold the chain in position on the bar and place the loop round the sprocket. 10. Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar. NOTE: When placing the bar on the bar studs, ensure that the adjusting pin is in the chain tension pin hole. CUTTERS CHAIN ROTATION CHAIN DRIVE LINKS BAR GROOVE CHAIN DRIVE LINKS ADJUSTING PIN BAR STUDS GUIDE BAR PLATE CLUTCH COVER SPROCKET Fig. 44 Fig. 45 Fig. 47 Fig. 46 MAINTENANCE UK - Page 28 11. Replace the outer guide bar plate, ensuring that the bar pin groove is at the bottom with the upper and lower edges angled away from the guide bar. 12. Replace the clutch cover and bar mounting nuts. 13. Tighten the bar mounting nuts finger tight only. The bar must be free to move for tension adjustment. 14. Remove all slack from the chain by turning the chain tensioning screw clockwise until the chain seats snugly against the bar with the drive links in the bar groove. 15. Lift the tip of the guide bar up to check for sagging. 16. Release the tip of the guide bar and turn the chain tensioning screw half a turn clockwise. Repeat this process until sagging does not exist. CHAIN TENSIONING SCREW Fig. 48 17. Hold the tip of the guide bar up and tighten the bar mounting nuts securely. The chain is correctly tensioned when there is no sagging on the underside of the guide bar and the chain is snug, but can be turned by hand without binding. Ensure that the chain brake is not set. See Figure 51. NOTE: If chain is too tight, it will not rotate. Loosen the bar nuts slightly and turn the tension adjuster a quarter turn anticlockwise. Lift the tip of the guide bar up and retighten the bar nuts securely. Ensure that the chain will rotate without binding. Fig. 49 Fig. 50 Fig. 51 MAINTENANCE MAINTENANCE ADJUSTING THE CHAIN TENSION WARNING: Never touch or adjust the chain while the motor is running. The saw chain is very sharp. Always wear protective gloves when performing maintenance on the chain. 1. Stop the engine before setting the chain tension. 2. Make sure the guide bar nuts are loosened to finger tight and turn the chain tensioner clockwise to tension the chain. NOTE: A cold chain is correctly tensioned when there is no slack on the underside of the guide bar, the chain is snug and can be turned by hand without binding. 3. Re-tension the chain whenever the flats on the drive links hang out of the bar groove. NOTE: During normal saw operation, the temperature of the chain increases. The drive links of a correctly tensioned warm chain will hang approximately1.25 mm (1/8 in) out of the bar groove. To help determine the correct warm chain tension, the tip of the combination wrench can be used as a guide. See Figures 52, 53 and 54. NOTE: New chain tends to stretch: check the chain tension frequently and tension as required. CAUTION: A chain tensioned while warm may be too tight when cool. Check the “cold tension” before next use. FLATS ON DRIVE LINKS Fig. 52 APPROXIMATELY 1.25 mm APPROXIMATELY 1.25 mm Fig. 54 Fig. 53 CHAIN MAINTENANCE CAUTION: Check that the switch is in the STOP “ | / O ” position before working on the saw. Use only a low-kick-back chain on this saw. This fast-cutting chain provides kick-back reduction when properly maintained. For smooth and fast cutting, maintain the chain properly. The chain requires sharpening when the wood chips are small and powdery, the chain must be forced through the wood during cutting, or the chain cuts to one side. During maintenance of the chain, consider the following: Q ..........Improper filing angle of the side plate increases the risk of a severe kick-back. UK - Page 29 MAINTENANCE Q Raker depth gauge) clearance. See Figure 55. 1. Too low increases the potential for kick-back. 2. Not low enough decreases cutting ability. Q If the cutter teeth hit hard objects such as nails and stones, or are abraded by mud or sand on the wood, let the Homelite service dealer sharpen the chain. NOTE: Inspect the drive sprocket for wear or damage when replacing the chain. If signs of wear or damage are present in the areas indicated, have the drive sprocket replaced by a Homelite service dealer. See Figure 56. Fig. 55 RAKER CLEARANCE SHARPENING THE CUTTERS Be careful to file all cutters to the specified angles and to th...

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