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Service Manual
SELF PROPELLED CHIPPER VAC - CSV 070
MTD Products LLC - Product Training and Education Department
FORM NUMBER 769-01422
5/2004
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TABLE OF CONTENTS Safety Switch ..............................................................................................................................1 Inspection of the Drive System ...................................................................................................3 Transmission Removal ...............................................................................................................5 Impeller and Belt Removal ......................................
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Self-propelled Chipper Shredder Vacuum Self-propelled Chipper Shredder Vacuum ABOUT THIS SECTION: 1. SAFETY SWITCH In model year 2000, MTD introduced a vertical crank- The safety switch is located at the rear of the unit. The shaft lawn vacuum with a 22” clearing width and the intent is to make sure that it will not run without a col- capacity to shred small yard debris. Since it’s introduc- lection bag or blower chute in place. The safety switch tion, the product has been enhanced with a remo
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Self-propelled Chipper Shredder Vacuum 1.4. If slight pressure on the tab breaks continuity, 1.8. If the switch fails to ground the magneto, identify adjusting the tab by bending it downward will if the switch itself is at fault, or if a bad connec- enable the switch to work correctly. tion exists between the switch and ground. See Figure 1.4. NOTE: A lock tab secures the plug to the switch. The switch must be removed to reach the lock tab. 1.9. Remove the switch from the fr
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Self-propelled Chipper Shredder Vacuum 1.11. The switch should not show continuity when the 2. INSPECTION OF THE DRIVE SYSTEM plunger is pressed. See Figure 1.11. 2.1. Begin with an operational test. Does the drive system operate over the full range of speeds? 2.2. Remove belt cover using a 3/8” wrench. See Figure 2.2. Mounting Bolts for Belt Cover Figure 1.11 Belt Cover NOTE: “OL” meter reading in Figure 1.11 indi- cates no continuity. Other meters may read near Figure 2.2 1 ohm. 1.1
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Self-propelled Chipper Shredder Vacuum 2.4. Watch the travel of the variable speed sheave 2.7. If the idler pulleys do not react properly, confirm (pulley) on the input shaft. It may be necessary that the spring is properly attached to tension to remove the belt to confirm that the variable bracket and spring anchor bolt. See Figure 2.7. speed sheave has full travel. See Figure 2.4. Spring anchor bolt Low speed position: High speed position: Sheaves together Sheave
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Self-propelled Chipper Shredder Vacuum 2.11. Confirm that the drive gears are installed on the 3. TRANSMISSION REMOVAL correct side. See Figure 2.11. 3.1. Disconnect the H.T. lead from the spark plug. 3.2. Remove collection bag or blower chute. 3.3. Remove vacuum hose if attached. 3.4. Using a 3/8” socket, remove the 3 self tapping screws securing the belt cover. See Figure 3.4. Self tapping screws Right hand drive gear Figure 2.11 NOTE: There is an “R” on the right side gear and an “L” on th
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Self-propelled Chipper Shredder Vacuum 3.7. Safely support rear of the unit so that the rear 3.10. Remove retaining ring holding drive gear and wheels are off the ground, and remove rear hub dowel pin on axle. See Figure 3.10. caps. See Figure 3.7. Dust cover Right hand drive gear 4X4 supports Figure 3.10 Figure 3.7 NOTE: There are right hand and left hand drive gears 3.8. Using a 1/2” wrench and a 9/16” wrench remove the shoulder bolts, washers, and rear wheels. 3.11. Remove dust cover Se
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Self-propelled Chipper Shredder Vacuum 3.13. Remove three self tapping screws holding trans- 3.17. Remove spring from transmission actuating arm. mission brace to the frame using an 3/8 socket. (This is the self propel clutch cable) See Figure 3.17. 3.14. Remove the two phillips screws holding the transmission to the brace. See Figure 3.14. Actuating arm Self tapping screws Self propel clutch cable Phillips screw Figure 3.17 Figure 3.14 3.18. Push the hexagonal drive axle bush
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Self-propelled Chipper Shredder Vacuum 3.19. Pivot transmission rearward while sliding it to the 4. IMPELLER AND BELT REMOVAL right. See Figure 3.19. 4.1. Disconnect the H.T. lead from the spark plug. 4.2. Remove the transmission as described in the TRASMISSION REMOVAL section of this man- ual. 4.3. Safely tilt and support the front of unit to provide access to the front wheel and nozzle mounting hardware. 4.4. Remove the hub caps. 4.5. Remove front wheels using an 1/2 wrench. 4.6. Using a 15
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Self-propelled Chipper Shredder Vacuum 4.7. Use a 1/4” wrench to remove the three Screws 4.9. Tilt top of black plastic nozzle toward the engine securing the black plastic nozzle to the lower to remove. This will allow the safety gate to pass housing. They are accessible from underneath. by the hose opening freely. See Figure 4.9. See Figure 4.7. Black plastic nozzle Nozzle Engine Safety gate within vacuum tube 1/4” Screws Figure 4.9 Figure 4.7 4.10. Remove all of the fasteners holding the l
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Self-propelled Chipper Shredder Vacuum 4.11. Block the impeller with a chock, to keep it from 4.15. In servicing the impeller: rotating. Using a 9/16” socket, remove the bolt, • The pulley hub can be pried off and replaced or lock washer, and flat washer securing the impel- reused. ler to the crankshaft. See Figure 4.11. • The Chipper blade can be replaced with out removing the impeller. Refer to CHIPPER Bolt BLADE REMOVAL section of the manual.
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Self-propelled Chipper Shredder Vacuum 5. CHIPPER BLADE REMOVAL 5.4. Using 3/16” allen wrench, remove the flat head cap screw that holds the chipper blade to the 5.1. Disconnect H.T. lead from the spark plug. impeller. It is accessible through the opening 5.2. Remove the three bolts holding the chipper created by removing the chipper chute. chute to the upper housing. See Figure 5.2. See Figure 5.4. 3/16 allen wrench Chipper chute Figure 5.4 Figure 5.2 5.3. Remove the black plasti
