Husqvarna 3120 XP Owners Manual - Page 15

SAFETY INSTRUCTIONS C Checking chain lubrication E Lubricating the clutch drum bearing • Check the chain lubrication each time you refuel. Aim the tip of the saw at a light coloured surface about 20 cm away. After 1 minute running at 3/4 throttle you should see a distinct line of oil on the light surface. • Between the engine drive shaft and the clutch drum is a needle bearing that must be lubricated daily. Use the specially designed grease gun and a good quality bearing grease. If the chain lubrication is not working: 1 Check that the oil channel in the bar is not obstructed. Clean if necessary. 2 Check that the groove in the edge of the bar is clean. Clean if necessary. 3 Check that the bar tip sprocket turns freely and that the lubricating hole in the tip is not blocked. Clean and lubricate if necessary. If the chain lubrication system is still not working after carrying out the above measures you should contact your service agent. D Lubricating the bar tip sprocket • Lubricate the bar tip sprocket each time you refuel. Use the special grease gun and a good quality bearing grease. F Checking wear on cutting equipment Saw chain Check the saw chain daily for: • Visible cracks in rivets and links. • Whether the chain is stiff. • Whether rivets and links are badly worn. We recommend you compare the existing chain with a new chain to decide how badly it is worn. When the length of the cutting teeth has worn down to only 4 mm the chain must be replaced. G Chain drive sprocket min 4 mm (0,16") The clutch drum is fitted with one of the following drive sprockets: A SPUR (integral drive sprocket) B RING (replaceable) Regularly check the degree of wear on the drive sprocket. Replace if wear is excessive. Replace the drive sprocket whenever you replace the chain. A B English - 15