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Hersteller: Homelite Dateigröße: 24.36 mb Dateiname: Unterrichtssprache:

LUBRICATION All of the bearings in this product are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions. Therefore, no further lubrication is required. REPLACING THE guide BAR AND CHAIN See Figures 34 - 43. DANGER: Never start the engine before installing the guide bar, chain, clutch cover, and clutch drum. Without all these parts in place, the clutch can fly off or explode, exposing the user to possible serious injury. maintenance Fig. 34 Fig. 35 Fig. 36 WARNING: To avoid serious personal injury, read and understand all the safety instructions in this section. n Always place the switch in the stop “ ” position before you work on the saw. clutch cover Run Position sprocket Page 26 — English cutters bar groove chain drive links Fig. 38 maintenance chain rotation chain drive links Fig. 37 n Make sure the chain brake is not set by pulling the chain brake lever/hand guard towards the front handle to the run position. NOTE: When replacing the guide bar and chain, always use the specified bar and chain listed in the Bar and Chain Combinations section later in this manual. n Wear gloves when handling the chain and bar. These components are sharp and may contain burrs. n Press in on the clutch cover lock knob and rotate counterclockwise until the clutch cover can be removed. n Remove the bar and chain from the mounting surface. n Remove the old chain from the bar. n Lay out the new 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. n Place the chain drive links into the bar groove as shown. n Position the chain so there is a loop at the back of the bar. n Hold the chain in position on the bar and place the loop around the sprocket. n Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar. n Replace the clutch cover ensuring that the adjusting pin in the clutch cover is in the bar chain tensioning pin hole and that both bar studs are securely in their respective holes in the clutch cover. NOTE: The adjusting pin may need to be slightly repositioned with the chain tensioning dial so that it is aligned with the position of the bar chain tensioning pin hole. n Replace the clutch cover and rotate clutch cover lock knob just enough to hold the cover in position. NOTE: The bar must be free to move for chain tension adjustment. n Lift the tip of the guide bar up to check for sag. n Remove all slack from the chain by rotating the chain tensioning dial clockwise until the chain seats snugly against the bar with the drive links in the bar groove. n Release the tip of the guide bar and, if the chain sags, turn the chain tensioning dial clockwise. Repeat this process until sag does not exist. n Hold the tip of the guide bar up and tighten the clutch cover lock knob securely. Page 27 — English Fig. 40 rotate clutch cover lock knob clockwise to secure chain tensioning dial CLUTCH COVER lock knob maintenance The chain is correctly tensioned when there is no sag on the underside of the guide bar, the chain is snug, but it can be turned by hand without binding. Ensure that the chain brake is not set. Note: If chain is too tight, it will not rotate. Loosen the clutch cover lock knob by pressing in and slightly rotating counterclockwise, then rotate the chain tensioning dial counterclockwise. Lift the tip of the guide bar up and retighten the clutch cover lock knob securely. Ensure that the chain will rotate without binding. Fig. 39 adjusting pin CLUTCH COVER SPROCKET chain tensioning pin hole Fig. 41 Fig. 42 tighten chain loosen chain MAINTENANCE ADJUSTING THE CHAIN TENSION See Figures 44 - 46. WARNING: Never touch or adjust the chain while the engine is running. The saw chain is very sharp. Always wear protective gloves when performing maintenance on the chain. Fig. 43 . Stop the engine before setting the chain tension. FlatS on drive linkS . Slightly loosen the clutch cover lock knob by pressing in and rotating counterclockwise. . Turn the chain tensioning dial 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 it can be turned by hand without binding. . Retension 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 approximately .050 in. out of the bar groove. The tip of the supplied combination wrench (UT10542, UT10562 and UT10582 only) can be used as a guide to help determine the correct warm chain tension. NOTE: New chains tend to stretch; check the chain tension frequently and tension as required. Fig. 44 . .050 in. Fig. 45 . .050 in. Fig. 46 CAUTION: A chain tensioned while warm may be too tight upon cooling. Check the “cold tension” before next use. Page 28 ...

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