valutazioni - 2, GPA: 4
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Facilità d'uso
When making a replacement be sure to order one of the JOHNDEERE bars listed for your saw in this operator's manual. The proper size SAFE-T-TIP® nose guard comes installed on thebar. Use only guide bars that have a provision for mounting theSAFE-T-TIP®. Chain Brake Chain brakes are designed to rapidly stop the chain fromrotating. When the chain brake lever / hand guard is pushedtoward the bar, the chain should stop immediately . A chain brake does not prevent kickback. B) RUN POSITION C) BRAKE POSITION Chain brake should be cleaned and tested daily. Clean the chain brake per the Maintenance-Chain Brake Section andtest per the Operation-Chain Brake Operation Section. WARNING Even with daily cleaning of the mechanism, the dependability of a chain brake to perform under field conditionscannot be certified. Keep the Safe-T-Tip® nose guard onyour saw's guide bar, and use proper cutting techniques. Run Position(B) Brake Position(C) English ASSEMBLY Assembling the Bar and Chain 1. Ensure that the chain brake is not set by pulling the chainbrake lever / hand guard towards the front handle as shownin Illustration (A). Refer to Safety-Chain Brake and Operation- Chain Brake Sections for additional information. 2. Remove the two (2) bar nuts (B) and the clutch cover (C). 3. Remove and discard the plastic shipping spacer (D) thathas been installed on the bar studs in place of the bar forshipping purposes. 4. Adjust the chain tensioning pin (E) fully towards the rimsprocket (F) using the chain tensioning screw (G). WARNING Check the chain tension frequently when operating thechain saw. Never touch or adjust the chain while themotor is running. The saw chain is very sharp, alwayswear protective gloves when performing maintenance tothe chain. B C D A E GF 5. The guide bar contains a bar stud slot (H) that fits over thebar studs. The guide bar also contains two chain tensioningpin holes (J) which fit over the chain tensioning pin andtwo lubrication holes (K). The bar is reversible and eithertensioning pin hole may be utilized with the chaintensioning pin. 6. Place the guide bar (L) onto the bar studs (M) so that thechain tensioning pin (E) fits into the chain tensioning pin hole. CAUTION Failure to assure that the chain tensioning pin is in thechain tensioning pin hole will result in severe damage tothe chain saw during reassembly of the clutch cover. 7. Position the bar tip through the chain loop as shown inIllustration (N). 8. Fit the chain (P) over the rim sprocket (F) and into bar groove. The cutters on the top of the guide bar should face toward thebar tip, in the direction of the chain rotation. See insert (Q) inIllustration below. LE H J N CAUTION Severe damage can occur to the rim sprocket, clutch drum, guide bar and chain, if the chain is not correctly seated intothe rim sprocket. K P Q F English ASSEMBLY 9. Replace the clutch cover (C) and install the two (2) bar nuts(B). Tighten the bar nuts finger tight only, see Illustration (R). The bar must be free to move for tension adjustment. NOTE: If the clutch cover does not slide on freely, checkthat the chain brake is not engaged. To disengage chainbrake with clutch cover removed, grasp clutch cover asshown in Illustration (S) and pull back on chain brakelever / hand guard. 10. Remove all slack from chain by turning the chain tensioningscrew (G) clockwise, assuring that the chain seats into the bargroove during tensioning. 11. Lift the tip of the guide bar up to check for sag, seeillustration (T). Release the tip of the guide bar, and turnthe chain tensioning screw (G) 1/2 turn clockwise. Repeatthis process until sag (U) does not exist. 12. Hold the tip of the guide bar up and tighten the bar nutssecurely as shown in Illustration (V). 13. Chain is correctly tensioned when there is no slack on theunderside of the guide bar, the chain is snug, but it can beturned by hand without binding, see Illustration (W). Ensure that the chain brake is not set. NOTE: If chain is too tight, it will not rotate. Loosen barnuts slightly and turn adjusting screw 1/4 turn counterclockwise. Lift the tip of the guide bar up andretighten bar nuts. WARNING Check the chain tension frequently when operating thechain saw. Never touch or adjust the chain while themotor is running. The saw chain is very sharp, alwayswear protective gloves when performing maintenance tothe chain. R C B S T U V W -+ G 10 English OPERATION Chain TensionBreaking-in the Chain WARNING Never touch or adjust the chain while the motor is running. The saw chain is very sharp, always wear protectivegloves when performing maintenance to the chain. 1. Stop the engine before setting the chain tension. Make surethe guide bar nuts are loose, turn the chain tensioning screwclockwise to tension the chain. Refer to Assembly-Assembling the Bar and Chain Section. A cold chain is correctly tensioned when there is no slackon the underside of the guide bar, the chain is snug, but itcan be turned by hand without binding. 2. Chain must be r...
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