Poulan 1994-04 User Manual - Page 20

D. DRIVE SHAFT LUBRICATION • Lubricate the drive shaft: - After each ten (10) hours of operation. - Before operating if the tool has been stored for 90 days or longer. I CAUTION: I Lay drive shaft on a clean surface. Avoid laying the shaft on floor, ground or on any other surface that may have dirt or debris. Even after wiping shaft, grease residue can pick up dirt particles that can cause damage or premature failure. CAUTION: I Take care to avoid injury your hands and fingers with broken wires when checking for damage or wiping the drive shaft. A cloth will not prevent broken wires from puncturing or tearing your skin. • Use following procedure: 1. Remove the screw and nut from the throttle trigger housing. Figure 27 . 2. Hold throttle trigger away from the foam grip and remove the barrel end of the throttle cable from the throttle trigger. Figure 28 . 3. Carefully pull throttle cable out of foam grip. 4. Loosen the nose cone screws and remove the tube from the engine. 5. Remove drive shaft from the tube. Figure 29 . 6. Check the drive shaft for broken wires, twists or kinks, and replace if damage is found. 7. Using a clean cloth, wipe the drive shaft thoroughly to remove any old grease. Figure 29 . 8. Apply a uniform coat of lube to the entire surface of the drive shaft. 9. Inject the remaining contents of the container into the top of the tube. 10. Replace drive shaft in the tube. Figure 29 . Spark Plug Wire "Nose Cone" Screws Throttle Trigger Screw Throttle Trigger Nut Figure 27 Round Hole in Trigger Figure 28 N Barrel End of Cable Drive Shaft Tube Figure 29 11. Reassemble the tube to the engine and the throttle cable to the throttle trigger housing. Tighten all screws securely. • When ordering flex shaft lube, see the Accessory list for the proper:part number. E. CARBURETOR ADJUSTMENTS YOUR WEED EATER PRODUCT HAS BEEN DESIGNED AND MANUFACTURED TO SPECIFICATIONS THAT REDUCE HARMFUL EMISSIONS. After your unit has been run for 5 hours, the engine has broken-in. To ensure that your unit is at peak performance and producing the least amount of harmful emissions after break-in, have your Authorized Service Dealer adjust your carburetor for optimum operating conditions. NOTE- Properly adjusting the carburetor is a complicated task. Read all warnings and instructions thoroughlybeforestartingadjustments. If you do not think that you completely understand all warnings and instructions, let your Authorized Service Dealer perform these adjustment& A WARNING Make carburetor adjustments with lower end supported to prevent the trimmer line from contacting any object. Hold tool with your hand; do not use optional shoulder strap for support. A WARNING Keep others away when making carburetor adjustments. • Poor engine performance can be a result of other causes such as dirty air filter, carbon build-up on muffler outlets, etc. See "Trouble Shooting Chart" before proceeding with carburetor adjustments. • For best results, it is recommended that you have an Authorized Service Dealer make all carburetor adjustments. Your dealer has the training, experience, and tools necessary to properly adjust your unit to meet our factory performance specifications. This service is not covered by warranty. If it becomes necessary for you to make carburetor adjustments yourself, follow the described procedures very carefully. A WARNING Serious injury to the operator and others can occur if the carburetor is not properly adjusted. • Very small adjustments can affect engine performance. It is important to turn the screw a very small amount per adjustment and test performance before making further adjustments. Each adjustment should be no more than the width of the slot in the adjusting screw. • This is a complicated task; it is important to follow steps in sequence as indicated. 1. TROUBLE SHOOTING SUGGESTIONS - Engine will not continue to run at idle position. See "Idle Speed Adjustment" and "Low Speed Mixture Adjustment." - Trimmer head continues to spin when the engine idles. See "Idle Speed Adjustment" and "Deceleration Check." - Engine dies or hesitates when it should accelerate. See "Acceleration Check." - 20 -