Two-Stage Snow Blowers Operator’s Manual Safety, Assembly, Operating, and Maintenance Instructions 42” Model 50” Model P/N: 6670-1 S/N: 21210627 and up P/N: 6670-20 S/N: 21210627 and up Please Read and Save These Instructions For Safety, Read All Safety and Operation Instructions Prior to Operating Machine Effective Date: 08.01.
Foreword Thank you...for purchasing a Walker snowblower. Every effort has been made to provide you with the most reliable product on the market, and we are sure you will be among our many satisfied customers. It for any reason this product does not perform to you expectations, please contact us at (970) 221-5614. Every customer is important to us. Your satisfaction is our goal. Please...
TABLE OF CONTENT INTRODUCTION – TO THE PURCHASER ............................................................................................... 3 SAFETY PRECAUTIONS........................................................................................................................... 4 Before Operation ............................................................................................................................... 4 Notice ...................................................................
TABLE OF CONTENT MAINTENANCE ....................................................................................................................................... 19 Maintenance .................................................................................................................................... 19 Drive Chain Adjustment................................................................................................... 19 Reduction Sprocket Removal ............................................
INTRODUCTION TO THE PURCHASER Illustrations All products are designed to give safe, dependable service if they are operated and maintained according to instructions. Read and understand this manual before operation. The illustrations may not necessarily reproduce the full detail and the exact shape of the parts or depict the actual models, but are intended for reference only. This manual has been prepared to assist the owner and operators in the safe operation and suitable maintenance of the equipments.
SAFETY PRECAUTIONS SAFETY FIRST This symbol, the industry's "Safety Alert Symbol", is used throughout this manual and on labels on the machine itself to warn of the possibility of personal injury. Read these instructions carefully. It is essential that you read the instructions and safety regulations before you attempt to assemble or use this unit. DANGER : Indicates an immediately hazardous situation which, if not avoided, will result in death or serious injury.
SAFETY PRECAUTIONS - continued NOTICE A safe operator is the best assurance against accidents. All operators, no matter how experienced they may be, should read this operator's manual and all other related manuals before attempting to operate an equipment. Please read the following section and pay particular attention to all safety recommendations contained in this manual and those labeled on the equipment and on the tractor. THE SNOWBLOWER Before Operation 1.
SAFETY PRECAUTIONS - continued SNOWBLOWER OPERATION 1. In case of a belt-driven equipment, make sure drive belt is routed properly before operation. 10. If the snowblower starts to vibrate abnormally, stop the engine immediately and check for cause. Excessive vibration is generally a sign of trouble. 2. Before leaving the tractor unattended, take all possible precautions.
SAFETY PRECAUTIONS - continued THE TRACTOR 12. Fill fuel tank outdoors with extreme care. Never fill fuel tank indoors. Replace fuel cap securely and wipe up spilled fuel. General Information 1. Read the operator's manual carefully before using tractor. Lack of operating knowledge can lead to accidents. 13. Never allow anyone to operate the snowblower until they are thoroughly familiar with basic tractor and snowblower operation. 2. Do not permit anyone but the operator to ride on the tractor.
SAFETY PRECAUTIONS - continued M AINTENANCE TRANSPORT 1. If the tractor/equipment is to be driven on public roads, it must be equipped with an SMV (Slow Moving Vehicle) sign. Check local traffic codes that may apply to unit usage on public roads and highways in your area. ALWAYS USE GENUINE PARTS WHEN REPLACEMENT PARTS ARE REQUIRED 1.
DECALS Replace immediately if damaged 657346 657761 660988 657762 2500938 2500937 657804 655683 657763 OM 0182SB-A 9
ASSEMBLY HITCH INSTALLATION – TRACTOR SIDE Before installing this hitch make sure engine is off and parking brake is set. Attaching Quick Hitch to Tractor Figure 2 1. Lightly grease the deck support arm shaft (fig.1, item 1) on the tractor. 2. Engage adaptor frame tube sockets (fig.1, item 2) onto the tractor support arms (fig.1, item 1) and slide on as shown in figure 2. Continue to slide on until you can install a hitch pin (fig.3, item 1) through the hole in each end of the support arm shafts.
ASSEMBLY 3. Figure 5: Drill five 13/64” (5 mm) dia. holes in the tractor: two in the forward speed control arm and three in the body as. 7. Connect the harness red wire to the free connector of the PTO clutch switch red wire. 4. Figure 6: Attach the toggle switch mounting bracket (item 1) on the forward speed control arm using two 10—24 x 1/2” bolts and kept nut. At this time, you need to connect the green ground wire from the wiring harness to a bolt of the switch mounting bracket. 8.
ASSEMBLY SNOWBLOWER ASSEMBLY The snowblower is assembled at the factory, however snowblower kits must be assembled. Use the present manual and lay out all parts for assembly. Separate bolts and nuts into various sizes. After assembly, torque all the bolts according to the Torque Specification Table enclosed at the end of the manual. To assemble, place snowblower on a flat and leveled surface, the auger facing the ground. Snowblower Preparation (Figure 8) 1. 2. 3. 4. 5. 6. 7.
ASSEMBLY Attaching Blower to Tractor (Figures 10-11-12-13) 1. Figure 10: Remove the paint from inside the drive shaft yoke and install a 1/4" x 1/4" x 1 1/4" key (not included) in the reduction shaft keyway. 2. Figure 10: Slide the drive shaft yoke (item1) over the reduction shaft. 3. Figure 10: Secure the yoke to the reduction shaft with a 1/4" x 2 1/2" bolt and nylon lock nut (not included). Tighten the bolt and the 3/8" x 1/4" allen setscrew securely over the key in the yoke. Figure 10 4.
ASSEMBLY 6. Figure 12: Insert the male quick hitch section (item 1) into the female hitch (item 2) and lock in place by moving lever (item 3) to lock position (fully forward), and secure latch with linchpin. Figure 12 7. Grease the drive shaft sliding surfaces and slide the male shaft inside the female tube. Figure 12 8. Attach the driveline quick lock coupler to the tractor PTO. WARNING: This shaft turns at high RPM.
ASSEMBLY Installation of Electric Chute Rotation Kit 9475 (Option) (Figure 14 and Electrical diagram) 1. Insert 1 11/16" (43 mm) plastic bushing (item 1) in rotation bracket (item 2). 10. Connect one end of a 5" (127 mm) wire to "A" terminal and other end to "D" terminal on control switch. 2. Install the worm adaptor (item 3) on the motor shaft and attach motor (item 4) to electric motor support (item 2) using three 1/4" x 2" bolts, spacer rings (item 7) and 1/4" nylon insert lock nut (item 13).
ASSEMBLY Installation of Electric Deflector Kit 9370 (Option) (Figure 15 and Electrical Diagram) 1. Remove manual adjustment knob and bolts from sides of deflector and replace them with two 5/16” x 3/4” carriage bolts. Secure with the original nylon flat washers and supplied nylon nuts. Leave approximately 1/16" (1.6 mm) play. 2. Drill two 9/32" (7mm) dia. holes in chute as shown in figure 15. 3.
OPERATION GENERAL PREPARATION WARNING : To ensure safety, make sure tractor engine and snowblower come to a complete stop and tractor PTO is disengaged BEFORE making any adjustments. 1. Read this Operator's Manual carefully. Be thoroughly familiar with the controls and proper use of the equipment. Know how to stop the unit and disengage the controls quickly. PTO 2. Make sure the snowblower is clear of snow before engaging the driveline. The snowblower is driven from the tractor PTO.
OPERATION SNOW REMOVAL METHODS When removing snow, do not use the snowblower as a dozer blade to push snow. Let the snowblower work its way through deep drifts. If the speed of your tractor is too fast, the snowblower may become overloaded and clog. For best results, raise the snowblower and remove a top layer of snow. A second pass with the snowblower will remove the remaining snow. IMPORTANT: Use full RPM power when removing wet, sticky snow. Low RPM power will tend to clog the chute.
MAINTENANCE M AINTENANCE Shear Bolts ALWAYS USE GENUINE PARTS WHEN REPLACEMENT PARTS ARE REQUIRED 1. Always use a special grade 5 shear bolt (656053) on fan (item 1) and grade 5 two grooved shear bolts, silver plated (657295) on the auger (item 2) as shown on decal (657346) . WARNING: Before cleaning, adjusting or repairing the snowblower: bring the tractor to a complete stop, lower the implement shut off the engine and remove the ignition key.
MAINTENANCE LUBRICATION Use a good grease gun and lubricate as follows: DESCRIPTION Driveline INTERVAL LUBRICATION REQUIRED 8 hours Grease each universal joint 24 hours Separate the sliding parts and cover each one of them with grease Driving chain 4 hours and after each operation Lubricate with chain saw lubricant Auger 24 hours of operation or once a year whichever comes first Grease fitting on each auger section Gearbox OM 0182SB-A Check oil level.
PARTS INTRODUCTION All parts are illustrated in "exploded views" which show the individual parts in their normal relationship to each other. Reference nums are used in the illustrations. These nums correspond to those in the "Reference Num" (REF) column, and are followed by the description and quantity required. O/L - "Obtain Locally" in the part number column indicates common hardware that is available at your local hardware supply.
PARTS M ALE QUICK HITCH ASSEMBLY - 6625 REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 OM 0182SB-A DESCRIPTION Male quick hitch Quick hitch latch Hex. bolt 3/8” NC x 1 1/2” Nylon lock nut 3/8” NC Pin 1/4” dia x 1 5/8” Cotter pin 5/64" dia.
PARTS M ALE QUICK HITCH SYSTEM REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 DESCRIPTION Adaptor Grease fitting 45. Hex.
PARTS SNOWBLOWER ASSEMBLY– 6670-1 & 6671-20 OM 0182SB-A 24
PARTS SNOWBLOWERS ASSEMBLY – 6670-1 & 6671-20 R EF. DESCRIPTION QTY 1 Frame 1 2 Gearbox (cw) 1 Seal kit 1 3 Fan assembly including bushings 4300055 1 4 Bushing (Oilite) 2 5 Skid shoes 2 6 Carriage bolt 5/16" NC x 1" 4 7 Key woodruff 1 8 Lockwasher 5/16" 15 9 Hex. nut 5/16" NC 11 10 Auger L.H. 1 11 Auger R.H. 1 12 Shear bolt 5/16" NC x 2 1/4" w/ lock & nut, gr5, PTD 2 13 Bearing with set screw 2 14 Bearing flange 2 15 Hex. Bolt 5/16" NC x 3/4" 8 16 Gear box support bracket 1 17 Flat washer 5/16" (3/8" dia.
PARTS REDUCTION BOX ASSEMBLY REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 DESCRIPTION Reduction box ass'y inc. bearing & sprocket Reduction box Drive shaft with sprocket (H40C11) Bearing 1" bore with set screw Bearing flange Carriage bolt 5/16"NC x 5/8" Lockwasher 5/16", PTD Hex. nut 5/16", PTD Carriage bolt 5/16"NC x 3/4", PTD Allen setscrew 5/16"NC x 5/16" Flat washer 5/16" (3/8" hole) PTD Key 1/4" x 1/4" x 1 1/4" (not included) Sprocket (H40B32) Key 1/4" x 1/4" x 1" Chain #40 x 38 links L.L.
PARTS CHUTE WITH DEFLECTOR REF. 1 2 3 4 5 6 7 8 9 10 11 12 DESCRIPTION Chute ass'y ccw, w/ knobs & decals Knob 5/16" NC (nut included) Flat washer nylon 11/32" dia. hole Carriage bolt 5/16" NC x 1" PTD Flat washer nylon 7/16" dia. hole Hand guard Hex. Bolt 1/4" NC x 3/4", gr5 PTD Flat washer 1/4" (5/16" hole), PTD Lockwasher 1/4", PTD Hex.
PARTS M ANUAL CHUTE ROTATION SYSTEM REF. 1 2 3 4 5 6 7 DESCRIPTION Plastic bushing 1 5/16" (33 mm) Rotation worm (cw) Rotation support Rotation handle Plastic handle Hex.
PARTS FEMALE QUICK HITCH REF. 1 2 3 4 DESCRIPTION Quick hitch, female part Hex. bolt 1/2" NC x 1 1/4" Lockwasher 1/2" Hex.
PARTS FEMALE QUICK HITCH ASSEMBLY FOR 6670-1 REF.
PARTS DRIVELINE MALE PORTION ASSEMBLY 6671 REF. 1 2 3 4 DESCRIPTION Outer shield Nylon bearing Bearing retainer Male shaft and yoke assembly OM 0182SB-A QTY.
PARTS ELECTRIC CHUTE ROTATION KIT – 9475 (OPTION) REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 DESCRIPTION Flat washer 4/4" (5/16"hole), PTD Electric motor support CCW Worm adaptor Electric motor Rotation worm Retaining plate (not included in 9475 kit) Spacer ring Setscrew 1/4" NF x 1/4" Plastic bushing 1 5/16" Socket head capscrew 10-24 NC x 1", PTD Nylon insert lock nut 10-24 NC, PTD Bolt hex. 1/4" NC x 2", PTD Nylon insert lock nut 1/4" NC, PTD Not illustrated: - Wire 16GA X 5"lg 1 thread, black - Wire ass.
PARTS ELECTRIC DEFLECTOR – 9370 (OPTION) REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 OM 0182SB-A DESCRIPTION Support plate Spacer Actuator Shoulder screw 1/4" x 1 1/2" (10-24 NC) Nylon hex. nut (10-24 NC) Hex.
PARTS WORM GEARBOX (4500035) REF. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 DESCRIPTION Casing kit (item 1 and 2) Left casing Right casing Worm and gear kit (item 3 and 4) Gear Worm Driving shaft Bearing Bearing Seal kit (item 8 and 9) Seal Seal Cap Breather 1/8" NPT, 5 PSI, PTD Plug 1/8" NPT, PTD Spring pin 5/16" dia. x 1 1/4" lg. Dowel pin 3/16" dia. x 1/2" lg. Hex. bolt 5/16" NC x 2 1/2" lg., PTD Hex. bolt 5/16" NC x 1 1/2" lg.
AVAILABLE EQUIPMENT 42" (1.07 m) & 50" (1.27 m) TWO STAGE SNOWBLOWERS 36" (.91 m) ONE STAGE SNOWBLOWER 6670-1 6671-20 5600-20 46" (1.17 m) & 60" (1.52 m) ROTARY BROOMS DDM 6650-B H20 DEBRIS BLOWER 46" (1.17 m) & 60" (1.
TORQUE SPECIFICATION TABLE GENERAL SPECIFICATION TABLE Use the following torques when special torques are not given NOTE:These values apply to fasteners as received from supplier, dry, or when lubricated with normal engine oil. They do not apply if special graphited or moly sidulphide greases or other extreme pressure lubricants are used. This applies to both UNF and UNC threads. BOLT HEAD IDENTIFICATION MARKS AS PER GRADE NOTE: MANUFACTURING MARKS WILL VARY. Torque BOLT SIZES Inches Millimeters 1/4 6.
WALKER MANUFACTURING CO. 5925 E.
