To The Owner • Assembly & Set-Up • Controls • Operation • Maintenance • Parts List Operator’s Manual Two-Stage Snow Thrower Attachment — 190-032 WARNING READ AND FOLLOW ALL SAFETY RULES AND INSTRUCTIONS IN THIS MANUAL BEFORE ATTEMPTING TO OPERATE THIS MACHINE. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 Printed In USA Form No.
1 To The Owner Thank You Thank you for purchasing a snow thrower attachment manufactured by MTD LLC. It was carefully engineered to provide excellent performance when properly operated and maintained. Please read this entire manual prior to operating the equipment. It instructs you how to safely and easily set up, operate and maintain your machine. Please be sure that you, and any other persons who will operate the machine, carefully follow the recommended safety practices at all times.
Important Safe Operation Practices 2 WARNING! This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol.
8. 4. Do not operate machine while under the influence of alcohol or drugs. 5. Muffler and engine become hot and can cause a burn. Do not touch. 6. Exercise extreme caution when operating on or crossing gravel surfaces. Stay alert for hidden hazards or traffic. Do not carry passengers. 7. Exercise caution when changing direction and while operating on slopes. 8. Do not clear snow across the face of slopes; go up and down. Exercise extreme caution when operating on slopes.
Clearing A Clogged Discharge Chute 5. Snow thrower shave plates and skid shoes are subject to wear and damage. For your safety protection, frequently check all components and replace with original equipment manufacturer’s (O.E.M.) parts only. “Use of parts which do not meet the original equipment specifications may lead to improper performance and compromise safety!” 6. Check clutch controls periodically to verify they engage and disengage properly and adjust, if necessary.
3 Assembly & Set-Up Contents of Carton • One Auger Housing Assembly • One Upper Chute Crank Rod • Operator’s Manual • One Lift Handle Assembly • One Undercarriage Assembly • Two Self-adhesive Reflectors • One Hardware Pack • Two Extension Springs • Two Shoulder Bolts & Lock Nuts Contents of Hardware Pack • Two Quick Release Pins • Three Cable Ties (725-0157) WARNING! Before installing attachment, place tractor on a firm and level surface.
Manual PTO Undercarriage Assembly Setup Mounting The Undercarriage Assembly 1. Position the undercarriage on the floor beneath your tractor close to the PTO cable. The small idler pulley should be pointed towards the front of your tractor. NOTE: There are two different styles of undercarriages, yours may differ slightly from the following images. 2. Attach the PTO cable to the idler bracket, then fit the cable into the slotted fitting as seen in Fig. 3-3. 1.
IMPORTANT: It will be helpful to have a second person assist you or a hydraulic floor lift to complete steps 3 through 6. 3. 7. Attach the extension spring to the idler pulley. See Fig. 3-9. Place the undercarriage assembly beneath the tractor and lift it up against the frame of the tractor. See Fig. 3-7. Figure 3-9 8. Figure 3-7 4. Connect the other end to the tractor’s frame rail. See Fig. 3-10.
Attaching The Chute Directional Control Attaching The Lift Handle 1. 1. Attach the chute directional control assembly to the upper lift link on the left side of the auger housing. Assemble with two hex screws and two saddle washers as illustrated in Fig. 3-11. Secure with two flange nuts. Attach lift handle to lift bracket on the right side of auger housing assembly with two hex screws and two flange nuts provided. See Fig. 3-13.
2. Position the auger housing assembly in front of the tractor. See Fig. 3-15. Lay the belt and support tubes on the installation surface. Attaching Support Tubes 1. Secure the left support tube to the front of the undercarriage assembly with the clevis pin and hairpin clip removed earlier in step 2 of the mounting the undercarriage assembly section. See Fig. 3-17. Belt Support Tube Figure 3-15 3.
Routing The Upper Drive Belt (Tractor Models with an Electric PTO) 1. Attach and route upper drive belt around spindle pulley and idler pulley found on undercarriage, electric PTO clutch and PTO idler pulley as illustrated in Fig. 3-18. Make sure that the belt is routed to the INSIDE of the belt keeper on the undercarriage idler pulley and the remaining keeper pins found around the spindle pulley.
Set-Up Lift Adjustment Shear Pins If the lift index rod, as seen in Fig. 3-23, doesn’t latch securely or the pivot release has too much slack in it, an adjustment can be made as follows: A pair of replacement auger shear pins and bow tie cotter pins are included with your snow thrower. Store them in a safe place until needed. 1. Skid Shoe Adjustment Loosen the upper hex nut a few turns, then tighten the lower hex nut to shorten the cable length. See Fig. 3-23.
4 Controls Trigger Control Chute Directional Control Lift Handle Figure 4-1 Chute Directional Control (See Fig. 4-1) Controls WARNING! Be familiar with all controls and their proper operation. Know how to stop the machine and disengage them quickly. Lift Handle (See Fig. 4-1) The lift handle is located on the right side of the tractor and is used to raise and lower the snow thrower attachment. 1.
5 Operation Operation 13. NEVER drive the tractor into a snow bank. The snow thrower attachment is not a dozer plow. The lift linkage and/or the snow thrower drive system can be damaged as a result of “plowing” with the snow thrower attachment. 14. If the augers become jammed with a chunk of ice or a foreign object, move the PTO into the disengaged (OFF) position immediately and turn off the tractor’s engine and remove the ignition key.
Replacing Shear Pins Tire Chain Kit The augers are secured to the spiral shaft with two shear pins and cotter pins. If the auger should strike a foreign object or ice jam, the snow thrower is designed so that the pins may shear. If the augers will not turn, check to see if the pins have sheared. See Fig. 5-1. • 18” x 8.50” tires 490-241-0021 • 18” x 9.50” & 19” x 9.50” tires 490-241-0022 • 20” x 8.00” tires 490-241-0023 • 20” x 10.00” & 20” x 9.00 tires 490-241-0024 • 22” x 9.
6 Maintenance WARNING: Before lubricating, repairing, or inspecting, place tractor on a firm and level surface. Place the PTO in the disengaged (OFF) position, set the parking brake, shut engine off, and remove key to prevent unintended starting. Lubrication of Chute Directional Control The spiral on the end of the lower chute crank, the base of the discharge chute itself and the joint blocks which connect the lower and upper chute cranks should be lubed with multipurpose automotive grease once a season.
Notes 7 17
Model 190-032 52 56 61 58 47 55 15 46 52 63 3 59 42 54 50 60 45 53 49 51 43 59 62 44 48 16 52 57 8 A 9 51 2 16 8 63 20 15 19 16 14 6 6 7 41 23 40 6 35 30 25 27 33 24 21 64 1 36 31 40 29 26 28 37 34 A 7 63 4 18 12 5 11 18 13 18 32 38 39 18 5 10 5 21 17 22 63
Model 190-032 Ref No. Part Number 1 918-04315 Description Auger Gear Box (Incl. Ref. 23-41) Ref No. Part Number 33 721-0325 Description Grease Plug 2 684-0158-0637 Impeller Assembly, 12” 34 721-0327 Grease Seal 3 684-0148-0637 Housing Assembly 35 936-0351 Flat Washer, .76 x 1.5 x .030 4 703-2734-0637 Housing Brace Bracket 36 936-0369 Flat Washer, .508 x 1.0 x .020 5 684-04163-0637 LH Spiral Auger 37 736-0617 Thrust Washer, .75 x 1.25 x .
Model 190-032 52 62 1 55 16 17 60 54 61 26 53 50 3 4 4 59 19 4 75 4 12 7 27 51 7 10 104 11 56 4 29 5 8 4 57 58 6 2 97 89 20 103 76 22 99 4 78 18 15 67 91 67 98 87 79 85 105 88 13 74 53 14 21 105 100 33 35 33 39 43 100 65 30 24 9 32 38 39 31 34 35 64 4 65 72 46 98 91 107 67 73 67 4 65 37 96 45 86 67 32 94 49 30 25 41 44 32 23 70 69 4 71 68 66 20 93 108 91 106 95 36 40 47 63 67 77 91 109 48 28 38 102 101 42 90 100 92 82 83 80
Model 190-032 Ref No. Part Number Ref No. Part Number 1 720-04039 Knob 41 783-1014A-0637 Drive Mounting Bracket 2 3 784-5604A-0637 Chute Tilt Handle 42 911-0242 Spacer 731-1313C Chute Tilt Cable Guide 43 741-0192 Flange Bearing w/ Flats 4 712-04063 Nylon Hex Lock Nut, 5/16-18 44 756-1181A Drive Pulley, 7” 5 603-0302-0637 Chute Tilt Bracket Assembly 45 747-1192 Rod, 1/2 x 11.55 6 710-0262 Carriage Bolt, 5/16-18 x 1.5 46 783-0876 Link, 5.875 7 936-0451 Saddle Washer, .
Model 190-032 Ref No. Part Number 81 911-0310 Clevis Pin, .5 x 1.18 82 911-1000 Belt Keeper Pin 83 712-04064 Nylon Hex Lock Nut, 1/4-20 84 912-3009 Hex Lock Nut, 5/16-18 85 914-0145 Click Pin, .092 x 1.64 86 714-0147 Internal Cotter Pin, .125 x 1.75 87 930-3000 Reflector 88 732-04237 Extension Spring .50 x 12.00 89 932-0594A Extension Spring .91 x 7.33 90 936-0192 Flat Washer, .531 x .93 x .09 91 736-3072 Flat Washer, .38 x .93 x .
Model 190-032 1 5 2 3 7 2 4 6 1 Ref No. Part Number Description 1 712-0417A Flange Nut 5/8-18 2 941-0919 Ball Bearing 3 750-1096 Spacer 4 738-0976 Spindle Shaft 5 756-0999 Deck Pulley 7” 6 756-1173 Pulley 3.
MANUFACTURER’S LIMITED WARRANTY FOR The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States and/or its territories and possessions, and by MTD Products Limited with respect to new merchandise purchased and used in Canada and/ or its territories and possessions (either entity respectively, “MTD”).