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Yard-Man E663H - page 1
Oper ator’ s Man ual Snow Thr ower Models E643E E663H IMPOR T ANT : READ SAFETY R UL ES 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 co mbustion engine and should not be used on or nea r any unimproved forest-covered, brush - covered or grass-covered land unle ...
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Yard-Man E663H - page 2
2 TABLE OF CONTENTS Content Page Important Safe Op eration Practic es .............. ............. ................ ................ ............. 3 Loose Parts ............... ............. ................ ............. ................. ................ ............. ...... 5 Assembling Your Snow Thro wer ......... ............. ................ ...
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Yard-Man E663H - page 3
3 SECTION 1: IMPORTANT SAFE OPERATION PRACTICES This symbol point s out important safety instructions , which if not followed, co uld endanger the perso nal safety and/or proper ty of yourself and others. Re ad and follow all instructi ons in this manual before attempting to operate this machine. Failure to comp ly with these instructions may resul ...
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Yard-Man E663H - page 4
4 4. Never operate with a missing or damaged discharge chute. Keep all safety de vices in place and workin g. 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 while u nder the infl uence of alcohol or drugs. 7. Muffler and engine b ecome ho ...
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Yard-Man E663H - page 5
5 SECTION 2: LOOSE PARTS The snow thrower is shipped wit h following loose parts in th e carton. Plea se remove all loose parts from the carton before discardi ng it. See Figure 1 to identify the par ts noting that these parts may be refe rred to again in the following sections of this manual. Par t numbers are shown in parentheses. Figure 1 SECTIO ...
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Yard-Man E663H - page 6
6 Attaching Chute Directional Contr ol For packaging purposes, the two-piece chute directional cont rol was attac hed to the snow t hrower on the two ends, but was kept loose at th e middle. Assemble as follows: • Remove the hairpin clip from the chute directional control. Align holes o n the upper and lower pieces of the chute dire ctional contr ...
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Yard-Man E663H - page 7
7 SECTION 4: KNOW YOUR SNOW THROWER WARNING: B e familiar with all the controls on the snow throwe r and their proper operation. Kn ow how to stop the machine and disengage them quickly. Auger Control The auger drive clutch is locate d on the left handle. Squeeze the clutch grip to en gage the auge rs. Release to stop the sno w throwing actio n. (T ...
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Yard-Man E663H - page 8
8 Figure 6 SECTION 5: OPERATING YOUR SNOW THROWER Before Starting WARNING: Read, understand, and follow all instructions and wa rnings on th e machine and in this manual befor e operating. Gas And Oil Fill-up • Check oil level and add oil if necessary. Service the engine with gasoline as instructed in the separate engine ma nual pack ed with yo u ...
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Yard-Man E663H - page 9
9 • If your home electrical system is grounded, but a three-hole receptacle is not availab le, one should be installed by a licensed electrician before using the electric starter . • If you have a grounded th ree-prong receptacle, proceed as follows: • Connect power co rd to switch box on engine. Plug the other end of po wer cord into a three ...
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Yard-Man E663H - page 10
10 • In a well-ventilated area, start the snow thrower engine as instr ucted earlier in this sect ion under the heading Starting Engine . Make sure the throttle is se t in the FAST posit ion. • While standing in the ope rator’s position (behind the snow thrower) en gage the auger. • Allow the auger to remain engaged for approximatel y ten ( ...
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Yard-Man E663H - page 11
11 Operating T ips NOTE: Allow the engine to w arm up for a few minutes as the engine will not develop full pow er until it reaches operating t emperature. WARNING: Muffler, engine an d surrounding areas becom e hot and can caus e a burn. Do not touch. • Set the skid shoes 1/ 4" below the shave plate for normal usage. The skid shoes may be a ...
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Yard-Man E663H - page 12
12 Shift Rod Adjustment To adjust t he shift rod , proceed as follows. • Remove the hairpin clip and slide the connector up to separate the up per shift rod from the lower shift rod. See Figure 11. • Place shift lever in the sixth (6) Forw ard position. • Rotate the sh ift arm counterc lockwise (from the operator’s position) as far as it wi ...
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Yard-Man E663H - page 13
13 SECTION 7: MAINTAINING YOUR SNOW THROWER Lubrication WARNING: Before lubricating, repairing, or inspecting, disengag e all clutch levers and stop engine. Wait until all movin g parts have come to a complete stop. Disconnect spark plug wire and ground it against the engine to prevent unint ended starti ng. Chute Directional Control • The worm g ...
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Yard-Man E663H - page 14
14 Shave Plate and Skid Shoes The shave plate and skid shoe s on the bottom of the snow throwe r are subje ct to wear. They shou ld be checked pe riodically and r eplaced w hen necess ary. To remove the skid shoes, pr oceed as follows: • Remove the four carriage bolts, bell washers and hex nuts which attach them to the snow th rower. Reassemble n ...
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Yard-Man E663H - page 15
15 • Slip belt between friction wheel and friction wheel disc. See Figu re 18. Remove and rep lace belt. Figure 18 • Reassemb le following the instr uctions in revers e order. NOTE: The support bra cket must rest on t he stop bolt after the new bel t has been assembled. See Figure 18 . Servicing Friction Wheel Rubber WARNING: Disconnect the spa ...
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Yard-Man E663H - page 16
16 Off-season Storage WARNING: Never store t he machine or fuel container indo ors where there is an open flame, spark or pilot light such as on a water heater, furna ce, clothes dryer or other gas appliances. If unit is to be stored over 30 days, pr epare for storage as follows: • Remove gasoline f rom carburetor and fuel t ank to prevent gum de ...
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Yard-Man E663H - page 17
17 SECTION 9: TROUBLESHOOTING Pr oblem Cause Remedy Engine fails to start 1. Fuel tank empty, or stale fuel present in gas tank. 2. Blocked fuel lin e. 3. Choke no t in ON po sition 4. Faulty spark plug . 5. Safety key not in ignition switch on engine. 6. Spark plug wire disconnected. 7. Primer button not be ing used properly. 8. Fuel shut-off valv ...
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Yard-Man E663H - page 18
18 50 49 49 47 48 * Add a second washer here, if needed, to reduce axle play. 30 30 2 3 4 4 5 5 6 4 7 7 8 9 10 11* 12 1 5 13 14 15 16 17 18 1 19 20 41 22 23 24 25 26 28 29 43 1 31 32 33 34 8 35 Drive Clutch Cable Auger Clutch Cable 36 20 37 38 39 40 27 42 21 Auger Clutch Cable 44 46 45 SECTION 10: MODEL E663H & E643E PARTS LIST 51 52 ...
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Yard-Man E663H - page 19
19 Models E663H & E643E Ref. No. P art No. P art Description 1 710-1652 Self-tapping Screw, 1/4-20 x .625 2 784-5688 Drive Cable Guide Bracket 3 784-5687A Auger Clutch Cable Bracket 4 756-0625 Cable Roller 5 738-0924 Hex Screw 1/4-28 6 784-5630B Frame Assembly 7 741-0563 Ball Bearing 8 736-0105 Bell Washer 9 712-0116 Lock Jam Nut 10 741-04026 H ...
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Yard-Man E663H - page 20
20 Models E663H & E643E 1 2 3 4 5 6 7 8 9 10 11 12 14 15 13 16 10 9 18 19 20 21 22 23 13 25 23 22 26 18 27 28 13 30 32 33 16 18 35 34 36 37 38 39 41 40 42 17 40 39 29 24 31 18 31 43 44 ...
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Yard-Man E663H - page 21
21 Models E663H & E643E Ref. No. P art No. Part Description 1. 712-0116 Lock Jam Nut 3/8-24 2. 756-0178 Flat Idler, 2.75 w/o Fl anges 3. 784-5632B Auger Idler Arm 4. 710-0459A Hex Cap Screw 3/8-24 x 1.50 5. 738-0281 Shoulder Screw 6. 736-0167 Flat Washer 7. 732-0611 Extension Spring 8. 712-3068 Hex Nut 5/16-18 9. 712-3010 Hex Nut 5/16-18 10. 73 ...
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Yard-Man E663H - page 22
22 Models E663H & E643E 1 2 3 4 5 6 7 4 8 9 10 11 12 13 14 15 16 17 18 19 20 21 26 27 16 20 21 22 23 24 25 ...
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Yard-Man E663H - page 23
23 Models E663H & E643E Ref. No. P ar t No. P ar t Description 1. 710-1652 Hex Washer Screw 1/4-20 x.625 2. 731-1324 Belt Cover 3. 732-0710 Extension Spring 4. 710-0627 Hex Screw 5/16-24 x .75 5. 710-3005 Hex Cap Screw 3/8-16 x 1.25 6. 05896A Drive Clutch Bracket 7. 748-0234 Shoulder Spacer 8. 756-0987 Pulley Half 9. 754-0346 V-Belt 10. 756-098 ...
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Yard-Man E663H - page 24
24 Models E663H & E643E 9 23 29 24 1 26 28 41 7 12 20 6 21 15 A A 5 4 18 11 27 12 20 44 35 32 48 45 3 32 33 44 45 46 49 32 72 36 38 51 32 55 41 42 43 43 42 41 55 69 47 31 40 34 37 B B 54 62 55 66 59 53 63 64 59 55 65 60 4 54 52 61 75 56 57 8 68 13 10 73 67 19 70 39 39 (for ground wire 71 of light ass’y) 58 30 74 3 8 76 76 12 17 35 25 2 22 14 ...
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Yard-Man E663H - page 25
25 Models E663H & E643E Ref. No. P art No. P art Description 1. 684-0008A Shift Arm Assembly 2. 684-0053B Lower Chute Crank Assembly 3. 714-0507 Cotter Pin, 3/32 x .75 4. 710-0458 Carriage Bolt, 5/16-18 x 1 .75 5. 710-0449 Carriage Bolt, 5/16-18 x 2 .25 6. 710-0788 Self Tapping Screw, 1/4-20 x 1 7. 710-0643 Hex Cap Screw, 5/16-18 x 1.0 8. 710-3 ...
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Yard-Man E663H - page 26
26 Models E663H & E643E Ref. No. P ar t No. P art Description 1. 618-0123 RH Housing 2. 618-0124 LH Housing w/Fitting Hole 3. 710-0642 Self T apping Screw , 1/4-20 x .75 4. 711-1024A Spiral Axle, 30” (E663H) 711-0908A Spiral Axle, 24” (E643E) 5. 714-0161 Hi-Pro K e y , 3/16 x 5/8 6. 715-0143 Spring Spirol Pin, .25 x 1.25 7. 717-0528A Worm G ...
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Yard-Man E663H - page 27
27 NOTES ...
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Yard-Man E663H - 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 territories. MTD LLC warrants this product against defects for a period of two (2) years commencing on the date of original purchase and will, at its option ...
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