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MTD 614E - page 1
Snow Thrower Models 614E, 644E, 664G Oper ator’ s Man ual Model 664 Shown IMPOR T ANT : READ SAFETY R ULE S AND INSTR UCTIONS CAREFULL Y MTD LLC, P .O . BO X 361131 CLEVELAND , OH IO 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 ...
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MTD 614E - page 2
2 TABLE OF CONTENTS Content Page Important Sa fe Operatio n Practices .............. ............. ................. ............ ........... 3 Hardware Pac k........... ............. ................ ............. ............. ................ ............. .... 5 Assembling You r Snow Thrower ....... ............ ................. ............. ...
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MTD 614E - 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 ins tructions may resu ...
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MTD 614E - 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 while u nder the infl uence of alcohol or drugs. 7. Muffler and engine become hot an d can cause a burn. Do not touch. 8. Exercise extreme caution wh en operating on or crossing gravel surf ...
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MTD 614E - page 5
5 SECTION 2: CONTENTS OF HARDWARE PACK (Boxed Units) Lay out the hardwa re according to the illustration below for identification purpose s. Part numbers are shown in parentheses. (Har dware pack may contain extra items which are not used on your unit.) NOTE: The auger s ar e secured t o th e sp iral shaft with two sh ea r bolts and hex lock nu ts. ...
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MTD 614E - page 6
6 SECTION 3: ASSEMBLING YOUR SNOW THROWER NOTE: Refe rences 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. NOTE: This Operator’s Manu al covers several models. Snow throw ...
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MTD 614E - page 7
7 • Remove the lower two plastic wing knobs, cupped washers and carriage bolt (eyebolt on the left side) from the lowe r handle . See Figure 3. Figure 3 • Raise the upper handle assembly until it locks over the lower handl e. See Figure 4. • Observe the lower rear area of the snow thro wer to be sure both cables ar e aligned with roller guide ...
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MTD 614E - page 8
8 • Insert curved end of the Z fitting into the top hole in the triangular met al tab on the auger control grip. The triangular metal tab on the auger contro l grip must face the cent er of the handle panel. See Figure 6. Figure 6 • Place th e auger co ntrol on to p of the left handle . The triangular metal tab must be between the handle and th ...
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MTD 614E - page 9
9 • Thread the ferrule onto th e shift rod, up or down the shift rod and align with the far hole on the narr ow side of the shift lever assembly be hind the handle panel. See Figur e 10. Figure 10 • Secure the ferrule to the shif t arm ass embly with the flat wa sher and hairpin clip. Attaching Clutch Cables (Boxed & Crated Unit) (Hardw are ...
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MTD 614E - page 10
10 Attaching The Chute Dir ectional Control (Hardw are C) • Thread one he x nut about halfway on to eye bolt on the chute direc tional control. • Insert eye bolt through the hole provided in the le ft handle. See Figure 13. • Secure with cupped washer (cup ped side against the handle) an d other hex nut. Do not tighten until after attachin g ...
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MTD 614E - page 11
11 If your unit is not equipped wit h a lamp, cont act Customer Support as instru cted on page 2 for information rega rding price and availability. Snow Thrower Model Electric Light Kit 664G OEM-390- 255 NOTE: The engines found on snow thrower mode ls 614E and S644E ar e NOT equipped with an alternator and therefore can NOT accep t a light kit. SEC ...
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MTD 614E - page 12
12 • Crank clockwise to disch arge to the left. • Crank counterclockwise t o discharge to the right. Clean-Out T ool WARNING: Never use your hand to clear a clogged discharge d chute. Shut off engine and remain behind hand les until all moving parts have stop ped before unclogging. The chute clean-out to ol is fastened to the top of the auger h ...
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MTD 614E - page 13
13 WARNING: The optional electri c starter is equipped with a ground ed three-wire power cord an d plug, and is designed to operate on 120 volt AC house hold current . It must be used with a proper ly grounded three-prong recep tacle at all times to avoid the possibility of electric s hock. Follow all instructions carefully prior t o operating the ...
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MTD 614E - page 14
14 Check the adjustment of th e auger control as follows: • When the auger co ntrol is released and in the disengaged “u p” position, the cable should have very little slack. It shou ld NOT be tight. • In a well-ventilated area, start the snow thrower engine as instr ucted earlier in this sect ion under the heading Starting Engin e. Make su ...
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MTD 614E - page 15
15 WARNING: The muffler, engine, a nd their surrounding a reas become hot and can cause a burn. Do not to uch. • Discharge snow downwind whenever possible. Slightly overlap each previous swath . • Set the skid sh oes 1/4” below the scraper bar for normal usage. The skid shoes may be adjust ed upward for hard -packed snow. Adjust downward when ...
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MTD 614E - page 16
16 • With the t raction control is engaged, the friction wheel must contact the drive plate . See Figure 20. Figure 20 If adjustment is necessary: • Loosen the jam nut on the traction control cable and thread the cable in or out as necessary. • Retighten the jam nut to secure the cable when correct adjustment is reached. • Reassemb le the f ...
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MTD 614E - page 17
17 NOTE: Make certain to check for cor rect adjustme nt of the shift rod as instruct ed in the Final Adjustments section before opera ting the snow thrower. Drive Wheels • The wheels may be adjust ed for two different methods of ope ration. Follow the steps below for adjustment . See Figure 22. Figure 22 One Wheel Driving • On the right side of ...
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MTD 614E - page 18
18 Auger Shaft • At least once a season, remove shear bolt s on auger shaft. Oil or spray lubricant inside shaf t and lubricate th e auger bearings. S ee Figur e 24. Figure 24 Drive and Shifting Mechanism Remove rear cover. Oil an y chains, sprockets, gears, bearings, shaf ts, and shifting mechanism at leas t once a season. Use engine oil or a sp ...
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MTD 614E - page 19
19 Augers • The augers are secured to the spiral shaft with two shear bolts and hex lock nut s. If you hit a hard foreign object or ice jam, the snow thrower is designed so that th e bolts may shear. Refer to F igure 24. • If the augers will no t turn, check to see if the bolts have sheared. Replacement shear bolts a nd hex lock nuts have been ...
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MTD 614E - page 20
20 Drive Belt • Follow first four st eps of previous instructions . • Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 28. • Using a wrench, loosen the nut on the stop bolt until the suppor t bracket r ests on th e auger pu lley. See Figure 30. • Slip belt between friction wheel and friction wheel di ...
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MTD 614E - page 21
21 • Run engine until fuel tank is empty and en gine stops due to la ck of fuel. • Drain carb uretor by pressing upwa rd on bowl drain, located below the ca rburetor cove r. NOTE: Fuel stabilizer, or “Sta-Bil” (Included with certain units), is an acceptable alte rnative in minimizing the formatio n of fuel gu m deposits du ring storag e. Do ...
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MTD 614E - page 22
22 SECTION 10: MODELS 614E, 644E, & 664G 4 2 1 3 5 6 7 8 10 11 12 13 8 14 15 16 17 7 18 18 7 19 20 21 16 6 22 23 13 13 6 7 24 6 16 26 27 28 25 29 30 31 32 33 34 36 37 33 32 32 33 35 37 36 33 32 31 30 6 38 39 40 ...
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MTD 614E - page 23
23 Models 614E, 644E, & 664G REF . NO . PA R T NO . DESCRIPTION 1. 712-0116 Lock J am Nut 3/8-24 2. 756-0178 Flat Idler 3. 784-5632B Auger Idler Arm 4. 710-0459A Hex Cap Scre w 3/8-24 x 1.50 5. 741-0475 Bushing 6. 736-0242 Bell W asher 7. 712-30 10 Hex Nut 5/16-18 8. 712-3027 Hex Loc k Nut 1/4-20 10. 705-52 26 Reinforcement Chute 11. 731-13 79C ...
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MTD 614E - page 24
24 Models 614E, 644E, & 664G 1 2 3 4 5 7 8 9 56 15 16 16 17 18 18 19 19 20 20 21 22 53 54 25 26 27 28 29 30 53 23 34 35 23 36 38 54 39 40 41 39 42 43 44 45 46 17 14 13 7 37 10 12 24 6 7 55 55 57† 58† 59† 47†† 48†† 49†† 50†† 51†† 52†† 42 62† 64† 65† 63† 23 16 36 61† 60† 27* 22* †Models w/Folding Handle ...
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MTD 614E - page 25
25 Models 614E, 644E, & 664G REF . NO . PA R T NO . DESCRIPTION 1. 712-0116 Jam Lock Nut 3/8-24 2. 732-0193 Compression Spring 3. 736-0105 Bell Washer 4. 784-5619A Shift Handle 5. 710-0459A He x Cap Screw 3/8-24 6. 710-0788 T ap Scre w 1/4-20 7. 714-0104 Cotter Pin 8. 720-0232 Shift Knob - Black 720-04030 Shift Knob - Y ellow 9. 711-0677 Ferrul ...
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MTD 614E - page 26
26 Models 614E, 644E, & 664G 1 1 2 3 4 4 5 5 6 16” Wheels 13” or 15” Wheels 4 7 7 8 9 10 10 11 11 12 41 5 13 14 15 16 17 18 1 19 20 21 22 23 24 25 26 28 29 41 41 30 31 32 33 34 8 35 Drive Clu tch Cable Auger Clutch Cable Auger Clutch Cable Blower Housing 36 20 37 38 39 40 27 42 42 42 43 44 45 46 47 ...
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MTD 614E - page 27
27 Models 614E, 644E, & 664G REF . NO . PA R T NO . DESCRIPTION 1. 710-0599 Hex Scre w 2. 784-5688 Drive Cable Guide Brack et 3. 784-5687A Auger Clutch Cab le Brack et 4. 756-0625 Roller Cable 5. 738-0924 He x Scre w 1/4-28 6. 784-5630B F rame Assemb ly 7. 741-0563 Ball Bear ing 8. 736-0105 Bell Washer 9. 712-0116 Lock J am Nut 10. 741-4026 Hex ...
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MTD 614E - page 28
28 Models 614E REF . NO . PA R T NO . DESCRIPTION 1. 710-1652 He x W asher Screw 1/4-20 x.5 2. 731-1324 Belt Cov er 3. 732-0339 Extension Spr ing 4. 710-0627 Hex Scre w 5/16-24 x.75 5. 710-3005 Hex Cap Scre w 3/8-16 x 1.25 6. 05896A Drive Clutch Brac ket 7. 748-0234 Shoulder Spacer 8. 756-0985 Pulley Half 9. 754-0343 V -Belt 10. 756-0984 Pulley Hal ...
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MTD 614E - page 29
29 Models 644E & 664G REF . NO . PA R T NO . DESCRIPTION 1. 710-1652 He x W asher Screw 1/4-20 x.50 2. 731-1324 Belt Cov er 3. 710-3005 Hex Cap Scre w 3/8-16 x 1.25 4. 732-0710 Extension Spr ing 5. 710-0627 Hex Scre w 5/16-24 x.75 6. 05896A Drive Clutch Idler Brack et 7. 748-0234 Shoulder Spacer 8. 756-0987 Pulley Half 9. 754-0346 Belt 10. 756- ...
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MTD 614E - page 30
30 REF . NO . PA R T NO . DESCRIPTION 1. 618-0123 Housing—R.H. 2. 618-0124 Housing—L.H. 3. 710-06 42 He x Scre w 1/4-20 x.75 4. 711-09 08A Spiral Axle 24" 711-0910A Spiral Axle 28" 5. 714-0161 K ey 6. 715-01 43 Spiral Pin 7. 717-05 26 W orm Shaft 8. 717-05 28 W orm Gear 9. 718-01 86 Thrust Collar 10. 721-0325 Plug 11. 721-0327 Oil Sea ...
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MTD 614E - page 31
31 NOTES ...
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MTD 614E - page 32
MANUF A CTURER’S LIMITED W ARRANTY FOR: The limited warranty set forth below is given b y MTD LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. MTD LLC warrants this product against def ects f or a period of two (2) y ears commencing on the date of or iginal purchase and will, at its opt ...
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