Stimmen - 5, Durchschnittliche Bewertung: 4.2 ( )

Hersteller: MTD Dateigröße: 1.82 mb Dateiname: Unterrichtssprache:

If the flai screen becomes clogged, remove and clean as instrjcted in the Maintenance section below. For best performance, it is important to ksep the shredding blade and the chipper blades shan. Refer to Maintenance section, pages 7 and 8. If the composition of the material being discharged changes (becomes stringy, etc.) or if the rate at which the material is discharged slows down considi jrably, it is likely that the shredding blade and/or shipper blades are dull and need to be sharpened or replaced. FIGURE 8. MAINTENANCE A WARNING: Always stop engine end disconnect spark plug wire before cleaning, lubricating or performing any repairs or maintenance. LUBRICATION Lubricate the pivot points on the chute deflector and chipper chute door once a season using a light oil. ENGINE Refer to the separate engine manual for engine maintenance instructions. Maintain engine oil as instructed in the separate engine manual packed with your unit. Read ar id follow instructions carefully. Service air cleaner every 25 hours under normal conditions. Clean every few hours under extreme ly dusty conditions. Poor engine performance and looding usually indicates that the air cleaner should be serviced. To service the air cleaner, refer to the separate engine manual packed with your unit. The spark plug should be cleaned and the gap reset once a season. Spark plug replacement is recommended at the start of each season; check engine manual for correct plug type and gap specifications. Clean the engine regularly with a cloth o' brush. Keep the cooling system (blower housing area) clean to permit proper air circulation which is essential to engine performance and life. Be certain to re nove all dirt and combustible debris from muffer area. CLEANING The shredder may be cleaned by running water from a hose through the hopper assembly and chipper chute with the engine running. Allow the shndder to dry thoroughly. Wash the bag periodically with water. Allo v to dry thoroughly in the shade. Do not use heat. REMOVING THE FLAIL SCREEN If the discharge area becomes clogged, remove the flail screen and clean area as follows. 1. Stop the engine, make certain the shredder has come to a complete stop and disconnect spark plug wire from the spark plug before unclogging the chute. 2. Loosen the two hand knobs on each side of the chute deflector. Lift the chute deflector up, and tie it out of the way. 3. Remove two hairpin clips from the clevis pins which extend through the housing. Remove the clevis pins. Lift the flail screen from inside the housing. See figure 9. 4. Clean the screen by scraping or washing with water. Reinstall the screen. NOTE: Be certain to reassemble the flail screen with the curved side down as shown in figure 9. Chute Deflector FIGURE 9. Hand Knobs 6 V SHARPENING OR REPLACING CHIPPER BLADES 1. Disconnect spark plug wire and move it away from spark plug. 2. Remove the flail screen as instructed in previous section. 3. Remove the chipper chute by removing three hex nuts and washers. A 1/2" wrench is required. See figure 9. NOTE: When reassembling, the cupped washer goes on the bottom of the chipper chute with the cupped side against the chute. 4. Rotate the impeller assembly by hand until you locate one of the chipper blades in the chipper chute opening. Remove the blade, using a 3/16" alien wrench on the outside of the blade and 1/2" wrench on the impeller assembly (inside the housing). See figure 10. 5. Remove the other blade in the same manner. FIGURE 10. Replace or sharpen blades. If sharpening, make certain to remove an equal amount from each blade. Reassemble in reverse order. Make certain blades are reassembled with the sharp edge facing the direction shown in figure 10 (sharp edge is assembled toward the slotted opening in the impeller assembly). SHARPENING OR REPLACING SHREDDING BLADE The shredding blade may be removed for sharpening or replacement as follows. 1. Disconnect spark plug wire and move it away from spark plug. 2. Remove the six hex lock nuts and lock washers from the housing weld bolts using a 1/2" wrench. Remove the hopper assembly 3. Remove the back-up plate. NOTE: When reassembling, make certain the opening on the back-up plate is toward the bottom of the unit. The back-up plate may be reversed to provide a new cutting edge. Allen Screws Torque —B|ade Wrench FIGURE 11.-Model 242A640 & 242A641 Shown 4. Loosen the two hand knobs and cupped washers which secure the chute deflector, and raise the chute deflector. 5. Keep the impeller assembly from turning by inserting a 1/2" or 3/4" diameter pipe through the flail screen, or remove the flail screen, and insert a piece of wood (2 x 4) into the chute opening. 6. Models 242A645 and 242A648 only: Remove the two outside screws on the blade, using a 3/16" alien wrench and a 1/2" wrench. 7. All Units: Remove the blade by removing the center bolt, lock washer and flat washer. NOTE: Use caution when removing...

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