Assessments - 2, GPA: 4.5
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21. NOTE: Always wear heavy gloves when handling the saw chain. 1. Make sure the Chain Brake® lever is pulled back into the DISENGAGED position (Fig. 21). Remove bar retaining nuts with supplied multi-purpose tool (Fig. 22). 2. Remove chain brake cover (C, Fig. 22) and outer guide bar plate (I, Fig. 27) by pulling straight out (Fig. 22). 3. Slide bar off the two bar bolts and remove chain (Fig. 23). A Fig. 21 B C Fig. 22 Always use protective gloves when handling the saw chain. WARNING: 1. Spread chain out in a loop with cutting edges (E) pointing CLOCKWISE around loop (Fig. 24). 2. Slip the chain around the sprocket (F) behind the clutch (G). Make sure the links fit between the sprocket teeth (Fig. 25). 3. Place the slotted end of the guide bar over the two bar bolts (D, Fig. 23). Be sure adjusting tang (J, Fig. 23) is in lower adjusting hole of the bar. 4. Guide the drive links into the groove (H) and around the end of the bar (Fig. 25). 5. The chain will be tight so you will have to rotate the clutch clockwise by hand so the chain engages the bar sprocket. 6. Replace the outer guide bar plate (I) so the bent edges (top and bottom) are directed away from the chain (Fig. 27). 7. Install the Chain Brake® cover (Fig. 27). Make sure the chain does not slip off of the bar. Install the 2 bar retaining nuts hand tight and follow instructions in Saw Chain Tension Adjustment. NOTE: The guide bar retaining nuts are installed only hand tight at this point because saw chain adjustment is required. Follow instructions in Saw Chain Tension Adjustment. D J Fig. 23 E Fig. 24 H G Fig. 25 F I B Fig. 27 16 MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE AND REPAIR INSTRUCTIONS SAW CHAIN TENSION ADJUSTMENT Always use protective gloves when handling the saw chain. WARNING: Proper tension of saw chain is extremely important and must be checked before starting, as well as during any cutting operation. Taking the time to make needed adjustments to the saw chain will result in improved cutting performance and prolonged chain life. To adjust the saw chain: 1. Loosen the bar retaining nut(s) (B, Fig. 27). Hold nose of guide bar up and turn adjustment screw (D) CLOCKWISE to increase chain tension. Turning screw COUNTERCLOCKWISE will decrease amount of tension on chain. Ensure the chain fits snugly all the way around the guide bar (Fig. 28). D Fig. 28 2. After making adjustment, and while still holding nose of bar in the uppermost position, tighten the bar retaining nuts securely. Chain has proper tension when it has a snug fit all around and can be pulled around by gloved hand. NOTE: If chain is difficult to rotate on guide bar or if it binds, too much tension has been applied. This requires minor adjustment as follows: A. Loosen the bar retaining nuts so they are hand tight. Decrease tension by turning the bar adjustment screw COUNTERCLOCKWISE slowly. Move chain back and forth on bar. Continue to adjust until chain rotates freely, but fits snugly. Increase tension by turning bar adjustment screw CLOCKWISE. B. When saw chain has proper tension, hold nose of bar in uppermost position and tighten the bar retaining nuts securely. A CB Fig. 29 17 CHAIN BRAKE MECHANICAL TEST The purpose of the WARNING: Chain Brake® is to reduce the possibility of injury due to kickback; however, it cannot provide the intended measure of protection if the saw is operated carelessly. Always test the Chain Brake® before usingyour saw and periodically while on the job. Your chain saw is equipped with a Chain Brake® that reduces possibility of injury due to kickback. The brake is activated if pressure is applied against brake lever when, as in the event of kickback, operator’s hand strikes the lever. When the brake is activated, chain movement stops abruptly. To Test the Chain Brake®: 1. The Chain Brake® is DISENGAGED (chain can move) when BRAKE LEVER IS PULLED BACK AND LOCKED (A, Fig. 30). 2. The Chain Brake® is ENGAGED (chain is stopped) when brake lever is in forward position. You should not be able to move chain (B, Fig. 30). A B Fig. 30 A new saw chainCAUTION: stretches, requiring adjustment after as few as 5 cuts. This is normal with a new chain, and the interval between future adjustments will lengthen quickly. If saw chain is TOO CAUTION: LOOSE or TOO TIGHT, the sprocket, bar, chain, and crankshaft bearings will wear more rapidly. Study Fig. 29 for information concerning correct cold tension (A), correct warm tension (B), and as a guide for when saw chain needs adjustment (C). MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE AND REPAIR INSTRUCTIONS MAINTENANCE REQUIREMENTS CHECK FOR DAMAGED OR WORN PARTS Check a Sears Service Center for replacement of damaged or worn parts. NOTE: It is normal for a small amount of oil to appear under the saw after the engine stops. Do not confuse this with a leaking oil tank. • STOP Switch -Ensure STOP switch functions properly by moving the switch up to the STOP position. Make sure the engine stops; then restart engin...
Este manual também é adequado para os modelos :Benzo e serras - 316.350850 (6.98 mb)
Benzo e serras - 316.350850 (6.98 mb)
Benzo e serras - 316.350850 (6.98 mb)