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MTD 31AH7S3G701 - page 1
SNOW THROWER MODEL 31AH7S3G701 Oper ator’ s Man ual IMPOR T ANT : READ SAFETY R ULE S AND INSTR UCTIONS CAREFULL Y MTD LLC P .O . BO X 361131 CL EVELAND , OHIO 44136-0019 Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest- covered, brush-covered or grass-covered land unless th ...
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MTD 31AH7S3G701 - page 2
2 TABLE OF CONTENTS FINDING MODEL NUMBER This Operator’s Ma nual is an important part of your new snow thrower. It will help you assemble, prepare and maintain the unit for best performance. Please read and unde rstand what it says. Before you star t assembling your new equipment , please locate the model plate on the equipment and copy th e info ...
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MTD 31AH7S3G701 - page 3
3 SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: This symbol points out important safet y instructions which , if not followed, cou ld endanger the personal safe ty and/or property of yourself and others. Read and follow all instructio ns in this manual before attemp ting to opera te this machine. Failur e to comply with these in structions ...
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MTD 31AH7S3G701 - page 4
4 5. Never run an engine indoors or in a poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas. 6. Do not ope rate machine whil e under the in fluence of alcohol or drugs. 7. Muffler and engine b ecome hot and can cause a burn. Do not touch. 8. Exercise extreme caution wh en operating on or crossing gravel surf ...
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MTD 31AH7S3G701 - page 5
5 SECTION 2: ASSEMBLING YOUR SNOW THROWER NOTE: References to right or left side of the snow thrower are de termined from behind th e unit in the operating posit ion. The “operator ’s position” is defin ed as standing direct ly behind the snow thrower, facing the handle panel. Unpacking • Remove screws from the to p sides and ends of the sh ...
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MTD 31AH7S3G701 - page 6
6 • If not already a ttached, slip th e cables that ru n from the handle panel to th e chute into the cable guide located on top of the engine. See Figure 4. Figure 4 • Unwrap th e headlight wire, which is attached to the headlight benea th the handle panel. • Wind the headlight wire around the right handle until excess s lack is re moved. ? ...
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MTD 31AH7S3G701 - page 7
7 Chute Tilt Contr ol The distance snow is thrown can be changed by adjusting the an gle of the upper chute. Move the ch ute tilt control forward to de crease the distance, and backwards to increase distance. See Figure 5. Skid Shoe The space betwee n the shave plate and th e ground can be adjusted by positioning the skid shoes. Refer to Skid Shoe ...
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MTD 31AH7S3G701 - page 8
8 SECTION 4: OPERATING YOUR SNOW THROWER Before Starting WARNING: Read, understand, and follow all instructions and warnings on the machine and in this manua l before operating. Gas And Oil Fill-up Service the engin e with gasoline and oil as instructed in the separ ate engine manual pa cked with your snow thrower. Read instructions carefully. WARN ...
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MTD 31AH7S3G701 - page 9
9 Recoil Starter • With engine running, p ull starter rope with a rapid, continuous full arm stroke thre e or four times. Pulling the starter rope will produce a loud clattering sound, which is not ha rmful to the engine or starte r. • To stop engine, move throttle control to “stop” or “off” positio n. • Remove ignition key ( DO NOT t ...
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MTD 31AH7S3G701 - page 10
10 Drift Cutters (If Equipped) Drift cutters should be used when operating the snow thrower in heavy drift conditions. If your unit is not equipp ed with drift cutters , contact Customer Support as instru cted on page 2 for information rega rding price and availability. Snow Thrower Model Drift Cutter Kit All models OEM-390-679 Operating T ips NOTE ...
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MTD 31AH7S3G701 - page 11
11 • With the dr ive control engage d, the friction wheel must contact th e drive plate. See Figure 9. If adjustment is necessary: • Loosen the jam nut on the drive cable. Adjust the cable as necessary. Refer to Figure 7. • Retighten the jam nut to secure the cable when correct adjustment is reached. • Reassemb le the frame co ver. Figure 9 ...
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MTD 31AH7S3G701 - page 12
12 SECTION 6: MAINTAINING YOUR SNOW THROWER WARNING: Before lubricating, repairing, or inspecting, disengage all con trols and stop engine. Wait until all moving parts have come to a compl ete stop. Disconnect spark plug wire and g round it against the engine to prev ent unintended starting . Always wear sa fety glasses during operation or while p ...
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MTD 31AH7S3G701 - page 13
13 SECTION 7: SERVICING YOUR SNOW THROWER WARNING: Before serv icing, repairing, or inspecting, disengage all c lutch levers a nd stop engine. Wait until all moving parts have come to a compl ete stop. Disconnect spark plug wire and g round it against the engine to prev ent unintended starting . Always wear safety glasse s during operation or while ...
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MTD 31AH7S3G701 - page 14
14 NOTE: Loosening the six nuts tha t connect the frame to the auger housing may aid in belt re moval. Figure 15 • Lift the auger belt from the auger pulley, and slip belt between th e support br acket and the au ger pulley. Repeat t his step for the fr ont auger belt. • Replace the auger drive belts by following instructions in r everse order. ...
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MTD 31AH7S3G701 - page 15
15 Move the gear shaft to the right and slide the f riction wheel assembly from the shaft. See Fig ure 19. Figure 19 • Remove the four screws from t he friction wheel assembly. See Figure 19 . • Remove the fricti on wheel rubber from between the friction wheel plates. • Reassemble new fr iction wheel rubb er to the friction wheel plates an d ...
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MTD 31AH7S3G701 - page 16
16 SECTION 8: TROUBLESHOOTING Prob lem Cause Remedy Engine fails to start 1. Fuel tank empty, or stale fuel. 2. Blocked fuel line. 3. Choke not in th e ON position 4. Faulty spark pl ug. 5. Safety key not in ignition switch on engine. 6. Spark plug wire disconnected . 7. Primer button not being used properly. 1. Fill tank with clean, fresh gasol in ...
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MTD 31AH7S3G701 - page 17
17 NOTES ...
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MTD 31AH7S3G701 - page 18
18 SECTION 9: PARTS LIST FOR MODEL 7S3 36 35 84 37 31 33 80 80 83 82 1 11 19 5 6 17 7 17 22 11 27 21 8 Part of handle panel for reference on ly 13 25 4 9 3 24 20 14 26 11 19 30 29 32 34 38 39 40 41 42 43 11 45 45 46 47 48 49 50 51 52 53 54 54 55 56 57 58 59 60 40 61 62 63 64 65 43 67 68 69 72 70 71 9 53 40 16 74 75 76 77 9 64 81 68 79 9 78 28 23 10 ...
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MTD 31AH7S3G701 - page 19
19 Model 7S3 Ref. No. P ar t No. P ar t Description 1. 684-0008A Shift Arm Assembly 2. 747-0737 Chute Directional Control 3. 710-0449 Carriage Scre w 5/16-18 x 2.25 4. 710-0458 Carriage Bo lt 5/16-18 x 1.75 5. 710-0643 Hex Bolt 5/16 -18 x 1.0 6. 710-0788 Tt Screw 1/4-20 x 1 .0 7. 710-1880 Hex Bolt 5/16 -18 x 0.75 8. 711-0677 Ferru le 9. 712-04063 F ...
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MTD 31AH7S3G701 - page 20
20 Model 7S3 20 2 3 4 5 6 7 8 14 9 10 12 13 13 14 18 20 11 23 14 25 11 15 16 22 14 19 46 43 41 45 35 38 47 40 42 28 33 27 39 49 44 37 34 36 31 1 24 48 32 29 17 21 26 30 ...
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MTD 31AH7S3G701 - page 21
21 Model 7S3 NOTE: For painted parts , please refer to the list of color codes below. Please add the applicable color code, wherever needed, to the part number to orde r a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 06 7 ...
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MTD 31AH7S3G701 - page 22
22 Model 7S3 17 27 1 2 3 4 5 6 7 4 8 9 10 11 12 13 14 15 16 18 19 19 16 16 16 20 21 22 23 24 25 26 ...
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MTD 31AH7S3G701 - page 23
23 Model 7S3 IMPORTANT: For a proper working machine, use Factory Approved Parts. V-BELTS are specially design ed to engag e and disengage safely. A substitute (non OEM) V-Belt can be dangerous by not disengaging completely Ref. No. P art No. P art Description 1. 710-1652 Hex Washer Screw 1/4-20 x.625 2. 731-1324 Belt Cover 3. 732-0710 Extension Sp ...
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MTD 31AH7S3G701 - page 24
24 15 Model 7L3 25 19 26 27 24 23 22 21 16 17 18 19 20 29 30 31 32 32 32 34 30 32 27 26 19 25 36 21 24 23 22 12 2 30 10 18 19 20 2 1 13 11 14 9 3 7 6 5 4 2 40 39 38 28 8 35 41 33 37 29 29 ...
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MTD 31AH7S3G701 - page 25
25 Model 7S3 NOTE: For painted parts , please refer to the list of color code s below. Please add the applicable col or code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to or der would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 06 ...
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MTD 31AH7S3G701 - page 26
26 Model 7S3 1 2 6 3 10 12 7 8 5 4 9 13 15 14 17 16 19 20 22 22 20 19 28 21 18 21 18 15 13 14 29 31 32 30 30 32 34 37 38 36 23 35 27 39 11 40 41 42 44 45 51 46 47 48 52 46 53 51 54 55 54 50 16 17 49 37 24 25 26 26 33 33 56 56 ...
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MTD 31AH7S3G701 - page 27
27 Model 7S3 Ref. No. P art No. P art Description 1. 720-0223 Grip 2. 710-0604A Tap Screw, 5/16-18 x.6 25 3. 784-5642 Track Lockout Plate 4. 710-0157 Hex Cap Screw, 5/16-24 x.75 5. 736-0242 Bell Washer 6. 684-0038 Track Lock Handle Assembl y 7. 710-0459A Hex Cap Screw, 3/8-24 x 1.5 8. 712-0214 Hex Nut, 3/8- 24 9. 748-0353A Lift Shaft Drive 10. 750- ...
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MTD 31AH7S3G701 - page 28
MANUF A CTURER’S LIMITED W ARRANTY FOR: The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its poss essions and territo ries. “MTD” warrants this product agai nst defects in material and workmanship for a period of two (2) years commen cing on the date of original ...
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