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Resumen del manual
See “2. Idle Speed Adjustment." — Saw will not idle. See “2. Idle Speed Adjustment” and “3. Low Speed Mixture Adjustment.” — Engine dies or hesitates when it should accelerate. See “4. Acceleration Adjustment.” — Loss of cutting power which is not corrected by air filter cleaning. “See “5. High Speed Mixture Adjustment.” ¡CAUTION:! Permanent damage will occur to any 2-cycle engine if incorrect carburetor adjustments are made. • If the unit will not operate properly after making these adjustments, take the saw to a qualified ser-_vice dealer._ ▲warning The chain will be moving during most of this procedure. Wear your protective gear and observe all safety precautions._ 1. PREPARATION a. Stop engine. b. Use a fresh fuel mixture with proper gasoline/ oil ratio. c. Place the saw on a solid, fiat surface and make sure the chain will not contact any object. d. Remove the two carburetor cover screws and carburetor cover. Figure 45. e. Locate the three (3) carburetor adjusting screw openingstotherightoftheairfiltercover. Figure44. f. Start the engine and allow engine to idle 3 minutes to warm up. The engine must be at operating temperature for proper adjustments to be made. Figure 44 2. IDLE SPEED ADJUSTMENT a. Allow engine to idle. b. Adjust Idle Speed Screw until engine continues to run without stalling and without the chain moving. — Turn screw clockwise to increase engine speed if engine stalls or dies. — Turn screw counterclockwise to slow engine down and/or to keep the chain from turning. c. No further adjustments are necessary if the chain does not move at idle speed and if performance is satisfactory. A WARNING Recheck idle speed after each adjustment below. The chain must not move at idle speed to avoid serious injury. 3. LOW SPEED MIXTURE ADJUSTMENT a. Allow engine to idle. b Turn the Low Speed Mixture Screw slowly clockwise until the RPM starts to drop. Note the position. c. Turn the Low Speed Mixture Screw counterclockwise until the RPM speeds up and starts to drop again. Note the position. d. Set the Low Speed Mixture Screw at the mid* point between the two positions. 4. ACCELERATION ADJUSTMENT If engine dies or hesitates instead of accelerating, turn the Low Speed Mixture Screw 1/16 of a turn at a time counterclockwise until you have smooth acceleration. 5. HIGH SPEED MIXTURE ADJUSTMENT I CAUTION: i Adjustments as small as 1/16 of a turn can affect engine performance. It is important to turn the screw only 1/16 of a turn per adjustment and test the performance of the saw before making further adjustments. a. Make a test cut. b. Adjust the High Speed Mixture Screw 1/16 of a turn as follows: — Clockwise if saw smokes or loses power. — Counterclockwise if the saw has speed out of the cut but lacks power in the cut. c. Repeat test cut. d. Continue 1/16 of a turn adjustments until the saw runs smoothly in cut I CAUTIONTI A too lean high speed setting (clockwise adjustment) will cause engine damage to any 2-cycle engine from overheating and lack of lubrication. Never set the high speed mixture screw so far clockwise that you have high speed but lack power while cutting. An effective approach follows. — Turn screw counterclockwise until engine loses power while cutting. — Then, turn screw clockwise in 1/16 of a turn increments only until the engine has power while cutting. NOTE: If the unit will not operate property after making these adjustments, take the saw to a qualified service dealer. E. AIR FILTER • A dirty air filter — reduces cutting power — increases fuel consumption • Clean the Air Filter: —frequently, especially under very dusty conditions. —always after 10 tanks of fuel mixture or 5 hours of operation whichever is less. 1. Clean off the carburetor cover and the area around it to keep dirt and sawdust from falling into the carburetor chamber when the cover is removed. 2. Remove the carburetor cover screws and carburetor cover Figure 45. 3. Pull out the air filter. 4. Wash the filter in soap and water. CAUTION: Do not use gasoline or other flam-mable liquid to clean the filter to avoid creating a fire hazard. CAUTION: Never operate the unit without the air filter in place to avoid damage to the engine. 5. Squeeze the filter dry. 6. Add a small amount of oil to coat the filter. NOTE: Avoid soaking the filter with oil. 7. Squeeze out excess oil. 8. Replace filter by tucking in edges and smoothing it flush with the carburetor housing. NOTE: Be careful when replacing the carburetor cover as incorrect placement wilf prevent the choke from working properly. 9. Move the choke knob all the way to the right. 10. Check the choke shutter to be sure it is closed.. Figure 45. f 11. Reinstall the carburetor cover and tighten the carburetor cover screws. 12. Check the operation of the choke. { NOTE: If the choke knob sticks or will not move, remove the cover and repeat steps 9-12 above. F. STORAGE When your saw is to be stored for over 30 days,...