Form No. 3438-776 Rev A POWER CLEAR® 721/821 Snowthrower Service Manual Published: July 2020 © 2020—The Toro® Company 8111 Lyndale Avenue South Bloomington, MN 55420 Original Instructions (EN) Contact us at www.Toro.com.
Revision History Revision History Page 2 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A
Preface This service manual was written expressly for Toro service technicians. The Toro Company has made every effort to make the information in this manual complete and correct. Basic shop safety knowledge and mechanical/electrical skills are assumed. The Table of Contents lists the systems and the related topics covered in this manual. We are hopeful that you will find this manual a valuable addition to your service shop.
Service Procedure Icons The following icons appear throughout this Service Manual to bring attention to specific important details of a service procedure. Critical Process This icon is used to highlight: • Installing safety equipment (shields, guards, seat belts, brakes, and R.O.P.S.
Table of Contents Preface ................................................................................................................ 3 Chapter 1: Safety ............................................................................................ 1–1 Safety Instructions ....................................................................................... 1–2 Chapter 2: Specifications and Maintenance .................................................... 2–1 Specifications ..............................
Preface Page 6 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A
Chapter 1 Safety Table of Contents Safety Instructions ................................................................................................................................ 1–2 Think Safety First ...............................................................................................................................
Safety Instructions DANGER This safety symbol means danger. When you see this symbol, carefully read the instructions that follow. Failure to obey the instructions could cause serious permanent injury, disability, or death. WARNING This safety symbol means warning. When you see this symbol, carefully read the instructions that follow. Failure to obey the instructions can result in serious injury. CAUTION This safety symbol means caution.
Think Safety First (continued) Battery acid is poisonous and can cause burns. Avoid contact with skin, eyes and clothing. Battery gases can explode. Keep cigarettes, sparks and flames away from the battery. Avoid injury due to inferior parts… Use only original equipment parts to ensure that important safety criteria are met. Avoid injury to bystanders… Always clear the area of bystanders before starting or testing powered equipment.
Think Safety First (continued) The proper class of fire extinguisher should be used in case of fire. Class A extinguishers are for ordinary combustible materials such as paper, wood, cardboard, and most plastics. The numerical rating on these types of extinguishers indicates the amount of water it holds and the amount of fire it can extinguish. Geometric symbol (green triangle). Class B fires involve flammable or combustible liquids such as gasoline, kerosene, grease and oil.
Chapter 2 Specifications and Maintenance Table of Contents Specifications ....................................................................................................................................... 2–2 Torque Specifications ........................................................................................................................... 2–3 Equivalents and Conversions............................................................................................................. 2–8 U.S.
Specifications POWER CLEAR® 721/825 Model Name Power Clear 721 R/E Commercial Power Clear 721 Commercial Power Clear 821 Power Clear 721 QZE Power Clear 821 QZE Model 38752 / 38753 38754 38755 38756 38757 Clearing Width 8.27 cm (21 inches) 8.27 cm (21 inches) with Extended Life Paddles Snow Cut Depth Engine Engine Model Oil Type & Capacity 4.92 cm (12.
Torque Specifications The recommended fastener torque values are listed in the following tables. For critical applications, as determined by Toro, either the recommended torque or a torque that is unique to the application is clearly identified and specified in the service manual. These torque specifications for the installation and tightening of fasteners shall apply for all fasteners which do not have a specific requirement identified in the service manual.
Metric Bolts and Screws g272209 Figure 2 1. Class 8.8 Specifications and Maintenance: Torque Specifications 2. Page 2–4 Class 10.
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Inch Series) Thread Size Grade 1, 5, & 8 Fasteners with Thin Height Nuts SAE Grade 1 Bolts, Screws, Studes & Sems with Regular Height Nuts (SAE Grade 2 or Better Nut) in-lb in-lb N • cm 10 ± 2 13 ± 2 147 ± 23 13 ± 2 25 ± 5 282 ± 30 18 ± 2 30 ± 5 339 ± 56 1/4-20 UNC 48 ± 7 53 ± 7 1/4-28 UNF 53 ± 7 5/16-18 UNC 5/16-24 UNF SAE Grade 5 Bolts, Screws, Studs & Sems with Regular Height Nuts (SAE Grade 5 or Better Nut) SAE Grade 8 Bolt
Standard Torque for Dry, Zinc Plated, and Steel Fasteners (Metric Series) Thread Size Class 8.8 Bolts, Screws, Studs with Regular Height Nuts (Class 8 or Stronger Nuts) Class 10.9 Bolts, Screws, Studs with Regular Height Nuts (Class 10 or stronger Nuts) in-lb N • cm in-lb N • cm M5 X 0.8 57 ± 6 644 ± 68 78 ± 8 881 ± 90 M6 X 1.0 96 ± 10 1085 ± 113 133 ± 14 1503 ± 158 ft-lb N • m ft-lb N • m M8 X 1.25 19 ± 2 26 ± 3 28 ± 3 38 ± 4 M10 X 1.5 38 ± 4 52 ± 5 54 ± 6 73 ± 8 M12 X 1.
SAE Grade 8 Steel Set Screws Recommended Torque Thread Size Square Head Hex Socket 1/4 - 20 UNC 140 ± 20 in-lb 73 ± 12 in-lb 5/16 - 18 UNC 215 ± 35 in-lb 145 ± 20 in-lb 1/2 - 13 UNC 75 ± 15 ft-lb 50 ± 10 ft-lb 3/8 - 16 UNC 35 ± 10 ft-lb 18 ± 3 ft-lb Wheel Bolts and Lug Nuts Thread Size Recommended Torque** 7/16 - 20 UNF Grade 5 65 ± 10 ft-lb 88 ± 14 N • m 1/2 - 20 UNF Grade 5 80 ± 10 ft-lb 108 ± 14 N • m M12 X 1.25 Class 8.8 80 ± 10 ft-lb 108 ± 14 N •m M12 X 1.5 Class 8.
Equivalents and Conversions Decimal and Millimeter Equivalents Fractions Decimals mm Fractions Decimals mm 1/64 0.015625 0.397 33/64 0.515625 13.097 1/32 0.03125 0.794 16/32 0.53125 13.484 3/64 0.046875 1.191 35/64 0.546875 13.891 1/16 0.0625 1.588 9/16 0.5625 14.288 5/64 0.078125 1.984 37/64 0.578125 14.684 3/32 0.9375 2.381 19/32 0.59375 15.081 1/8 0.1250 3.175 5/8 0.6250 15.875 9/64 0.140625 3.572 41/64 0.640625 16.272 5/32 0.15625 3.969 21/32 0.
U.S. to Metric Conversions To Convert Into Multiply By Miles Kilometers 1.609 Yards Meters 0.9144 Feet Meters 0.3048 Feet Centimeters 30.48 Inches Meters 0.0254 Inches Centimeters 2.54 Inches Millimeters 25.4 Square Miles Square Kilometers 2.59 Square Feet Square Meters 0.0929 Square Inches Square Centimeters 6.452 Acre Hectare 0.4047 Cubic Yards Cubic Meters 0.7646 Cubic Feet Cubic Meters 0.02832 Cubic Inches Cubic Centimeters 16.39 Tons (Short) Metric Tons 0.
Specifications and Maintenance: Torque Specifications Page 2–10 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A
Chapter 3 Troubleshooting Table of Contents General Troubleshooting .......................................................................................................................
GEARS The Systematic approach to defining, diagnosing and solving problems.
General Troubleshooting See Operator’s Manual for troubleshooting information.
Troubleshooting: General Troubleshooting Page 3–4 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A
Chapter 4 Engine Table of Contents General Information .............................................................................................................................. 4–2 Service and Repairs ............................................................................................................................. 4–3 Engine Replacement.......................................................................................................................... 4–4 Electric Starter Replacement .
General Information The POWER CLEAR® 721 models utilize the Toro G210 engine, while the POWER CLEAR® 821 utilizes the Toro G250 engine.
Service and Repairs Engine Assembly g321046 Figure 3 1. Engine 3. Engine Side Support 2. Engine Plate 4.
Engine Replacement Engine Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. DANGER Fuel is very flammable and explosive under some conditions. Do not smoke or let flames or sparks in your work area. 2. Drain the engine oil and fuel into a suitable container. 3. Remove the shroud from the machine. Shroud Removal (page 5–8) 4. Remove the recoil handle from the rope guide. 5.
Engine Removal (continued) g324731 Figure 5 8. Remove the rotor pulley assembly from the rotor shaft. 9. Remove the belt from the engine pulley and rotor pulley. 10. Remove the (5/16–24 x 1 1/4 inch) screw and Belleville washer securing the engine pulley to the engine shaft. Remove the engine pulley from the engine shaft. g321398 Figure 6 11. Remove the 4 (M8 x 1.25 mm x 5/8 inch) bolts securing the engine to the engine plate. Note: Bolts are located inside the belt housing.
Engine Removal (continued) g323976 Figure 7 12. Remove the 2 (5/16-18 x 1 3/8 inch) screws and 2 nuts securing the engine support to the engine. Note: Do not flip the machine to replace the screws and nuts. g321401 Figure 8 13. Using an appropriate lifting device, remove the engine from the machine.
Engine Removal (continued) g323977 Figure 9 Engine Installation 1. Using an appropriate lifting device, install the engine onto the machine. 2. Install the 2 (5/16-18 x 1 3/8 inch) screws and 2 nuts securing the engine support to the engine. Note: Do not flip the machine to remove the screws and nuts.
Engine Installation (continued) 3. Install the 4 (M8 x 1.25 mm x 5/8 inch) bolts securing the engine to the engine plate. Torque the screws to 21.5–27 N • m (190–240 in-lb). g323976 Figure 11 4. Apply blue threadlocker to threads of the (5/16–24 x 1 1/4 inch) screw. Install the screw and Belleville washer securing the engine pulley to the engine shaft. Torque the screw 25.4 ± 2.8 N • m (225 ± 25 in-lb). g321398 Figure 12 5.
Engine Installation (continued) 6. Install the rotor pulley onto the rotor shaft. Apply blue threadlocker to threads of the new (1/4-20 x 7/8 inch) screw. Install the Belleville washer and screw securing the rotor pulley assembly to the rotor shaft. Torque the screw to 11.3 ± 1 N • m (100 ± 10 in-lb). g324731 Figure 13 7. Hook the extension spring to the idler arm. g324732 Figure 14 8. Install the belt cover to the auger housing.
Electric Starter Removal (continued) 2. Remove the 2 (#6 x 2.5 in) screws securing the electric starter switch box to the shroud. 3. Unwind the harness retainer clip and remove the electric starter wire from the harness retainer clip. g323979 Figure 15 4. Remove the 2 (M6 x 35 mm) bolts securing the electric starter to the engine. Note: If the dowel pins were inadvertently removed, retain for installation. g323978 Figure 16 5. Remove the electric starter from the engine.
Electric Starter Installation (continued) 2. Install the electric starter by inserting the nose of the starter into the blower shroud and slide the mounting holes over the dowel pins. Install the 2 (M6 x 35) bolts securing the electric starter to the engine. Torque the bolts to 10 N • m (89 in-lb). g323978 Figure 17 3. Wrap the harness clip around the electric starter wire. g323979 Figure 18 4. Install the 2 (#6 x 2.5 in) screws securing the electric starter switch box to the shroud.
Muffler Guard Replacement Muffler Guard Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. 2. Remove the 2 (1/4–10 x 13/16 inch) screws securing the LH shroud retainer to the LH shroud. Remove the LH shroud retainer from the LH shroud. g320930 Figure 19 3. Remove the 6 (M6 x 12 mm) bolts securing the muffler guard to the engine.
Muffler Guard Removal (continued) g322776 Figure 21 4. Tip the muffler guard up towards the fuel tank to dislodge it from the fuel tank lip. 5. Remove the muffler guard from the engine. g323980 Figure 22 Muffler Guard Installation 1. Slide the lip of the muffler guard under the lip of the fuel tank. 2. Install the 6 (M6 x 12 mm) bolts securing the muffler guard to the engine. Torque the bolts to 8.47 N • m (75 in-lb).
Muffler Guard Installation (continued) g323692 Figure 23 g322776 Figure 24 3. Install the 2 (1/4–10 x 13/16 inch) screws securing the LH shroud retainer to the LH shroud.
Muffler Guard Installation (continued) g320930 Figure 25 Muffler Replacement Muffler Removal 1. Remove the muffler guard from the engine. Muffler Guard Removal (page 4–12) 2. Remove the 2 nuts securing muffler assembly to cylinder head. g322787 Figure 26 3. Remove the muffler assembly and gasket from the engine.
Muffler Removal (continued) g322788 Figure 27 Muffler Inspection 1. Inspect the muffler assembly for cracks, rust, or damage. Shake the muffler to check if the internal baffle is loose. Replace muffler if damaged. Muffler Installation 1. Install the new gasket onto the exhaust studs. Note: Refer to figure for correct gasket orientation.
Muffler Installation (continued) 2. Install the muffler onto the exhaust studs. Install the 2 nuts securing the muffler to the exhaust studs. Torque the nuts to 29 N • m (21 ft-lb). g322787 Figure 29 Fuel Tank Replacement Fuel Tank Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. 2. Drain the fuel from the fuel tank into a suitable container. DANGER Fuel is very flammable and explosive under some conditions.
Fuel Tank Removal (continued) g323979 Figure 30 5. Remove the (M6 x 20 mm) bolts securing the front of the fuel tank to the engine. The G210 engine has 3 (M6 x 20 mm) bolts and the G250 engine has 4 (M6 x 20 mm) bolts. Refer to the Specifications chapter to find the engine model. Specifications (page 2–2) g323982 Figure 31 6. Remove the (M6 x 20 mm) fuel tank bolt securing the fuel tank to the engine.
Fuel Tank Removal (continued) g322779 Figure 32 7. Pivot the fuel tank to gain access to the fuel line. Slide the clamp away from the fuel filter and remove the fuel line from fuel filter fitting. g323984 Figure 33 1. Clamp 8. Remove the fuel tank from the engine. 9. If needed, unscrew and remove the fuel filter from the fuel tank. Fuel Tank Inspection 1. Inspect the fuel tank for rust, corrosion, or leaking on the inside and outside of the fuel tank. Replace the fuel tank if damaged. 2.
Fuel Tank Installation (continued) g323984 Figure 34 1. Clamp 3. Install the fuel tank onto the engine. Apply blue threadlocker to the fuel tank bolt threads. Install the (M6 x 20 mm) fuel tank bolt securing the fuel tank to the engine. Torque the bolt to 8.47 N • m (75 in-lb). g322779 Figure 35 4. Install the (M6 x 20 mm) bolts securing the front of the fuel tank to the engine. The G210 engine has 3 (M6 x 20 mm) bolts and the G250 engine has 4 (M6 x 20 mm) bolts.
Fuel Tank Installation (continued) g323982 Figure 36 5. Engines equipped with an electric starter only, wrap the harness retainer clip around the electric start wire. 6. Install the shroud onto the machine. Shroud Installation (page 5–10) DANGER Fuel is very flammable and explosive under some conditions. Do not smoke or let flames or sparks in your work area. 7. Refill the fuel. Fuel Tank Test DANGER Fuel is very flammable and explosive under some conditions.
Engine: Service and Repairs Page 4–22 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A
Chapter 5 Chassis Table of Contents General Information .............................................................................................................................. 5–2 Service and Repairs ............................................................................................................................. 5–3 Shroud Replacement .........................................................................................................................
General Information The chassis of both the 721 and 821 are the same size and use many of the same parts and fasteners.
Service and Repairs Shroud and Quick Shoot Control Assemblies g321074 Figure 37 1. Deflector Trigger 11. Chute Ring Seal 2. Chute Deflector 12. Chute Ring Retainer 3. Chute Handle 13. Pinion Sleeve Spacer 4. Side Cover 14. Gear Chute Ring 5. Deflector Ratchet Hinge 15. Pinion Bracket 6. Deflector Hinge Pin 16. Gear Pinion 7. 8. 9. Deflector Seal Shroud Retainer Shroud 17. 18. 19. Detent Pawl Cable Retainer Chute Support Ring Chute 20. Lock Nut 10.
Handle Assembly g324729 Figure 38 1. Spring Cover 7. Rope Guide 2. Control Bail 8. Switch Box Support 3. Clutch Extension Spring 9. Box Support 4. Upper Handle 10. Support Cap 5. Clutch Cable Adjuster 11. Lower Handle 6.
Power Shoot Assembly g324730 Figure 39 1. Pulley Cover 2. Slider Pulley 3. Slider Handle RH 8. 9. 10. Trigger Spring Plate Chute Lock Cable Clamp 4. Short Chute Cable 11. Trigger 5. 6. Handle Screw Long Chute Cable 12. 13. Slider Handle LH Cable Bracket 7.
Quick Shoot Controls 1 g321048 Figure 40 Chassis: Service and Repairs Page 5–6 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A
Quick Shoot Controls 2 g321049 Figure 41 POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A Page 5–7 Chassis: Service and Repairs
Shroud Replacement Shroud Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. 2. Remove the 3 (1/4-10 x 2 inch) plastite screws securing the chute to chute seal ring. Remove the chute from the chute ring. Note: QZE models have a 1/4–10 x 1.5 inch plastite screw. Note: Some models will have a chute handle attached to the chute. g321389 Figure 42 3. Remove the (M4.2–2.25 mm x 3/4 inch) screw securing the chute seal ring to the shroud.
Shroud Removal (continued) g320930 Figure 44 5. Remove the 2 (1/4-20 x 1 inch) screws securing the front of the shroud to the auger housing. 6. Remove the 3 (M4.2 x 2.25mm x 3/4 inch) screws securing the RH shroud to the side cover. g320931 Figure 45 7. Remove the 2 (#6 x 2.5 inch) screws and 2 hex nuts securing the shroud to the switch box. Remove the shroud from the machine. Note: Remove the starter plug from the shroud, if equipped with electric start.
Shroud Removal (continued) g320932 Figure 46 Shroud Installation 1. Install the shroud onto the machine. Install the 2 (#6 x 2.5 inch) screws and 2 hex nuts securing the shroud to the switch box. Note: Install the starter plug to the shroud, if equipped with electric start. g320932 Figure 47 2. Install the 3 (M4.2 x 2.25mm x 3/4 inch) screws securing the RH shroud to the side cover.
Shroud Installation (continued) g320931 Figure 48 3. Install the 2 (1/4-20 x 1 inch) screws securing the front of the shroud to the auger housing. 4. Install the 2 (1/4-10 x 13/16 inch) screws securing the LH shroud retainer to the LH shroud. Remove the LH shroud retainer. Repeat the procedure on the RH side of the machine g320930 Figure 49 5. Install the chute seal ring to the shroud, secure with a screw (M4.2–2.25 mm x 3/4 inch).
Shroud Installation (continued) g320929 Figure 50 6. Install the chute and chute handle to the chute seal ring. Install the 3 (1/4-10 x 2 inch) plastite screws securing the chute handle and chute to chute seal ring. Torque the screws to 2.8–4 N • m (25–35 in-lb). Note: QZE models have a 1/4–10 x 1.5 inch plastite screw. Note: Some models will have a chute handle attached to the chute. g321389 Figure 51 Quick Shoot Controls Replacement Quick Shoot Controls Removal 1.
Quick Shoot Controls Removal (continued) g320933 Figure 52 4. Remove the pinion spacer sleeve from the quick chute gear assembly. g320934 Figure 53 5. Using pliers, compress the cable locks and remove the black and gray cables from the pinion bracket.
Quick Shoot Controls Removal (continued) g320935 Figure 54 6. Turn the quick chute gear assembly over so that the cable retainer is facing upwards. Remove the cable retainer from the pinion gear. Note: With the cable retainer removed, note the orientation of the cable.
Quick Shoot Controls Removal (continued) g320937 Figure 56 7. Unwrap and remove the cables from the pinion gear. Quick Shoot Controls Installation 1. With the pinion gear facing upwards, route the black cable into the bottommost gear slot. Insert the barrel end of the black cable into the slot and secure the cable under the gear tab. g320938 Figure 57 2. Wrap the black cable around the bottom of the spool.
Quick Shoot Controls Installation (continued) g320939 Figure 58 g320940 Figure 59 3. Insert the barrel end of the gray cable into the slot in the gear and secure the cable under the gear tab.
Quick Shoot Controls Installation (continued) g320941 Figure 60 4. Wrap the gray cable around the top of the spool.
Quick Shoot Controls Installation (continued) g320943 Figure 62 5. Slide the pinion gear into the pinion bracket and secure the cable locks. g320935 Figure 63 6. Insert the pinion spacer sleeve into the quick chute gear assembly.
Quick Shoot Controls Installation (continued) g320934 Figure 64 7. Align the quick chute gear assembly between the chute gear retainer and chute support ring. Install the (1/4-20 x 2.25 inch) screw and lock nut securing the chute ring retainer and quick chute gear assembly to the chute support ring. Note: Do not over tighten.
Quick Shoot Controls Installation (continued) g320933 Figure 66 8. Install the shroud onto the machine.
Chapter 6 Drive System Table of Contents General Information .............................................................................................................................. 6–2 Service and Repairs ............................................................................................................................. 6–3 Belt Replacement............................................................................................................................... 6–6 Rotor Replacement ...
General Information All POWER CLEAR® 721 and 821 models utilize Toro's Power Propel self-propel system.
Service and Repairs Auger Drive Assembly g324728 Figure 67 1. Cable Clutch 6. Flat Idler Pulley 2. Engine Pulley 7. Spring Clip 3. Belleville Washer 8. Pivot Pushing 4. Extension Spring 9. Rotor Pulley 5. Idler Arm POWER CLEAR® 721/821 Snowthrower Service Manual 3438-776 Rev A 10.
Rotor Assembly g320854 Figure 68 1. Rotor Blade 4. Rotor Blade Spacer 2. 3. Lock Nut Rotor Half 5.
Scraper Assembly g320957 Figure 69 1. Frame Brace 7. Bearing Spacer 2. Auger Housing 8. Rubber Washer 3. 4. Belt Cover Bearing Flange 9. 10. Shoulder Bolt Lower Chute 5. Thrust Washer 11. Scraper Blade 6.
Belt Replacement Belt Removal 1. Remove the 3 (1/4-20 x 5/8 inch) screws securing the belt cover to the auger housing. Remove the belt cover from the auger housing. 2. Unhook the extension spring from the idler arm. g324732 Figure 70 3. Remove the screw (1/4-20 x 7/8 inch) and Belleville washer securing the rotor pulley to the rotor shaft. g324731 Figure 71 4. Remove the rotor pulley assembly from the rotor shaft. 5. Remove the belt from the engine pulley and rotor pulley. Belt Installation 1.
Belt Installation (continued) g324731 Figure 72 3. Hook the extension spring to the idler arm. g324732 Figure 73 4. Install the belt cover to the auger housing. Install the 3 (1/4-20 x 5/8 inch) screws securing the belt cover to the auger housing. Torque the screws to 4.5–6.8 N • m (40–60 in-lb) Rotor Replacement Rotor Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. 2. Remove the belt. Belt Removal (page 6–6) 3.
Rotor Removal (continued) g320945 Figure 74 4. Remove the 3 (1/4-20 x 1 inch) rotor bearing screws securing the RH sideplate to the rotor assembly. g320946 Figure 75 5. Remove the rotor assembly from the auger housing.
Rotor Removal (continued) g321390 Figure 76 6. Remove the (3/8-16 x 3/4 inch) screw securing the RH bearing spacer to the RH end cap. Remove the rubber washer, ball bearing, thrust washer, and bearing flange from the rotor assembly. Replace rotor parts as necessary. g321788 Figure 77 1. Screw 4. Ball Bearing 2. RH Bearing Spacer 5. Thrust Washer 3. Rubber Washer 6. Bearing Flange Rotor Installation 1.
Rotor Installation (continued) g321788 Figure 78 1. Screw 4. Ball Bearing 2. RH Bearing Spacer 5. Thrust Washer 3. Rubber Washer 6. Bearing Flange 2. Install the rotor assembly into the auger housing. Install the 3 (1/4-20 x 1 inch) rotor bearing screws securing the RH sideplate to the rotor assembly. g320946 Figure 79 3. Install the 3 (1/4-20 x 1/2 inch) rotor bearing screws securing LH sideplate to the rotor assembly.
Rotor Installation (continued) g320945 Figure 80 4. Install the belt. Belt Installation (page 6–6) Paddle Replacement Paddle Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. 2. Remove the 4 (1/4-20 x 3/4 inch) Torx head screws securing the paddles together. g321393 Figure 81 3. Remove the 4 (1/4-20 x 1 1/2 inch) screws, 4 spacers, and 4 lock nuts securing the paddles to the 2 paddle spacers.
Paddle Removal (continued) g321394 Figure 82 Paddle Installation 1. Install the paddles to the rotor assembly so that the thicker rubber layer is assembled to the forward facing side of the rotor assembly. Install the 4 (1/4-20 x 1 1/2 inch) screws, 4 spacers, and 4 washers securing the paddles to the 2 paddle spacers.
Paddle Installation (continued) g321394 Figure 84 2. Install the 4 (1/4-20 x 3/4 inch) Torx head screws securing the paddles together. g321393 Figure 85 Scraper Replacement Scraper Removal 1. Park the machine on a level surface. Stop the engine, wait for all moving parts to stop and remove the key. 2. Flip the machine over so the auger housing is facing the floor. Remove the springs from the LH and RH sides of the scraper.
Scraper Removal (continued) g321395 Figure 86 3. Remove the 2 (3/8-16 x 2 1/2 inch) shoulder bolts securing the scraper to the auger housing. Remove the scraper from the auger housing. g321396 Figure 87 Scraper Installation 1. Flip the machine over so the auger housing is facing the floor. Install the scraper onto handle auger housing . Install the 2 (3/8-16 x 2 1/2 inch) shoulder bolts securing the scraper to the auger housing.
Scraper Installation (continued) g321396 Figure 88 2. Install the springs onto the LH and RH sides of the scraper. Install the lower hooks of the spring, so that the open end of the hooks are installed through the front holes of the scraper blade.
