Operator’s Manual 42-inch Snow Thrower Attachment For 600-series Lawn Tractors Model OEM-190-627 NOTE: This snow thrower attachment will NOT fit on all 600-series lawn tractors. It is NOT designed for and will NOT operate safely or properly on FastAttach™ compatible tractors. Check your tractor’s right fender for the FastAttach™ label before attempting to mount this attachment.
FINDING MODEL NUMBER This Operator’s Manual is an important part of your new snow thrower attachment. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says. Before you start assembling your new equipment, please locate the model plate on the equipment and copy the information from it in the space provided below. The information on the model plate is very important if you need help from our Customer Support Department or an authorized dealer.
SECTION 1: IMPORTANT SAFE OPERATION PRACTICES 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—heed its warning.
7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. MAINTENANCE AND STORAGE 1. Never tamper with safety devices. Check their proper operation regularly. 2. Disengage power take-off, lower the attachment, set the parking brake, stop engine and remove key to prevent unintended starting. Wait until the auger/impeller comes to a complete stop before cleaning, repairing, or inspecting. 3. Check bolts, and screws for proper tightness at frequent intervals to keep the machine in safe working condition.
SECTION 2: TO THE OWNER Model 627 42-inch two-stage snow thrower is designed for use on 600-series lawn tractors manufactured in 1996 or later ONLY. It will NOT fit nor operate properly or safely on ANY other tractor. It will NOT fit on any FastAttach™ compatible tractor. NOTE: If your 600-series lawn tractor was manufactured prior to 1996, model 627 snow thrower attachment can be mounted on the tractor with special instructions and minor modifications to the tractor.
SECTION 4: ASSEMBLY WARNING: Before installing attachment, 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. NOTE: Your tractor’s cutting deck and PTO belt must be removed prior to mounting the snow thrower attachment. Refer to your tractor’s Operator’s Manual for detailed instructions. Retain all the deck hardware and store it in a safe place.
8. Reinsert the remaining hex screws removed in Step 4 through the remaining aligning holes in both the support carriage assembly and the tractor’s frame rail (just behind the tractor’s front pivot bracket). Securely fasten with the remaining lock washers and hex nuts. See Figure 7. 9. Securely tighten all the other hardware used to mount the support carriage assembly. Mounting the Undercarriage Assembly 1.
Attaching The Lift Handle 1. Remove the hex screws and flange nuts from the lower portion of the lift handle. 2. Attach the lift handle to the lift bracket found on the right side of the support carriage assembly with the two hex screws and two flange lock nuts just removed. See Figure 10. Vertical Links Mounting the Auger Housing Assembly 1. Carefully remove the 2x4s placed under the tractor’s front tires in Step 2 of Mounting the Support Carriage Assembly. 2.
11. Remove the hex screws and hex nuts from the rear portion of each upper lift link. 12. Have an assistant grasp the upper portion of the auger housing and pivot the assembly upward until the holes of the upper links align with holes in the front of the support carriage. 13. Reinsert the hex screws removed in Step 11 through the aligning holes and secure the upper lift links to the support carriage by fastening with the hex nuts also removed in Step 12. See Figure 13.
Routing the Lower Drive Belt 1. Loosen, but do NOT remove the flange nut which secures the belt keeper to the drive mounting bracket. See Figure 16. 2. Make sure that the “V” side of the lower drive belt is seated firmly in the lower portion of the double pulley found in the rear of the undercarriage assembly. 3. Route the opposite end of the lower drive belt around the snow thrower’s drive pulley, to the INSIDE of the belt keeper loosened in Step 1.
SECTION 5: CONTROLS Engaging the Augers and Impeller • Power to the snow thrower attachment is activated by lowering the tractor’s lift lever and placing it into the lowest notch possible. • • Move the tractor’s throttle lever into the FAST (rabbit) position and allow it to remain there for the most efficient use of the snow thrower attachment. Move the tractor’s lift lever to the right before lowering it and placing it in any of the notches on the index bracket.
• • • • • • Overlap a previously cleared path when necessary (deep snow) so as not to overload the auger housing with snow. 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. Whenever possible, discharge snow downwind.
Adjust skid shoes as follows: 1. Loosen, but do NOT remove, the three hex nuts which fasten the skid shoe to the auger housing. 2. Raise or lower the skid shoe to desired position. NOTE: Make certain the entire base of both skid shoes are against the ground to avoid uneven wear on the skid shoes. When one side does wear out, the skid shoes are reversible. 3. Retighten the hex nuts loosened earlier. 4. Repeat this adjustment on the skid shoe found on the opposite side of the snow thrower.
Lower Chute Crank Support Bracket Adjustment If the spiral at the base of the lower chute crank isn’t fully engaging with the notches in the lower chute assembly, the support bracket can be adjusted inward or outward as follows: Spiral 1. Loosen, but do NOT remove the two hex nuts which secure the support bracket to the snow thrower housing. See Figure 22. 2. Adjust the support bracket inward or outward so that the spiral is fully engaged in the notches on the chute before retightening the hex nuts.
NOTES 15
Model 627 59 60 52 87 58 86 50 84 48 55 91 65 49 54 52 103 66 48 56 47 89 61 57 93 52 20 42 37 42 33 77 20 21 46 114 5 73 27 30 75 31 35 34 37 38 71 82 36 42 103 43 Hook Spring Ref.
Model 627 REF. NO. 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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 PART NO.
Model 627 64 69 63 8 26 65 68 5 62 26 61 67 38 66 19 3 33 60 59 14 26 29 37 69 30 27 18 34 22 17 29 15 28 33 4 10 27 29 22 12 20 35 29 6 69 19 31 27 18 29 33 23 12 36 2 11 19 42 41 36 50 48 33 56 47 49 43 55 27 42 58 54 45 57 43 46 57 51 58 39 18 40 30 37
Model 627 REF. NO. 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 26 27 28 29 30 31 32 33 34 35 PART NO. 05931 618-0407 747-1257 684-0065 684-0148 703-2734 703-2735A 703-2736 705-5226 705-5269 705-5270 710-0157 710-0167 710-0260A 710-0276 710-0451 710-0604A 710-0890A 712-0429 712-3010 712-3027 712-3057 715-0114 715-0129 731-1379 712-3004A 736-0188 736-0231 736-0242 741-0245 741-0309 741-0475 741-0493A 784-0396 784-5038B REF. NO. DESCRIPTION Bearing Housing, 1.
MANUFACTURER’S LIMITED WARRANTY The limited warranty set forth below is given by MTD PRODUCTS INC (“MTD”) with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship.
