ILLUSTRATED PARTS MANUAL Hydrostatic Lawn Tractor — Model Series 620 IMPORTANT READ SAFETY RULES AND INSTRUCTIONS CAREFULLY BEFORE OPERATION Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brushcovered or grass-covered land unless the engine’s exhaust system is equipped with a spark arrester meeting applicable local or state laws (if any).
Model Series 620 17 15 40 39 2 4 5 19 22 16 18 29 20 1 21 23 24 A 8 14 32 3 13 27 26 33 1 2 16 7 30 23 12 11 9 6 10 34 36 A 38 37 1 1 35
Ref. No. Part No. Description Ref. No. Part No. Description 1 710-0726 Screw, 5/16-12 x .750 23 736-0176 Flat Washer, .265 x .938 x 1.20 2 710-0599 Self-tapping Screw, 1/4-20 x.5 24 747-1196 Brake/Cruise Pivot Rod 3 710-0751 Hex Cap Screw, 1/4-20 x.
Model Series 620 39 16 40 28 4 6 15 48 13 38 1 35 14 36 46 46 41 7 50 26 47 31 30 29 44 34 28 49 17 42 C 43 C A 21 11 29 B 10 2 18 24 23 33 27 20 6 8 19 45 25 22 5 A B 12 32 6 9
Ref. No. Part No. Description Ref. No. Part No. Description 1 710-0227 Screw, #8-18 x.500 26 731-1993A Cover w/ Cup Holder 2 683-04301 Lift Shaft Assembly 27 710-0451 Carriage Bolt, 5/16-18 x.750 3 736-0204 Washer, Flat, .344 x .62 x .033 28 710-0604A Self-tapping Screw, 5/16-18 x.625 4 736-0607 Lock Washer, 5/16 29 710-0895 Self-tapping Screw, 1/4-15 x.
Model Series 620 25 3 14 24 18 2 7 20 16 21 39 15 16 12 22 8 38 11 23 7 17 17 7 36 34 5 1 35 31 6 30 19 26 9 33 37 28 27 29 4 32 10 13
Ref. No. Part No. Description Ref. No. Part No. Description 1 710-04095 Hex Screw, 3/8-16, 1.00, Gr5 22 783-0727D Pivot Bracket, Support LH 2 710-0514 Hex Screw, 3/8-16, 1.00, Gr5 23 783-0728B Pivot Bracket, Bar 3 710-0643 Hex Screw, 5/16-18, 1.00, Gr5 24 631-04008A Steering Wheel, 13.25 4 711-1408 Link, Drag, RH 25 731-04039 Steering Wheel Cover 5 711-1409A Link, Drag, LH 26 738-1011A Shoulder Screw,.5 x 2.
Model Series 620 1 18 11 26 48 47 B 19 A 34 21 14 29 20 39 7 40 43 31 41 51 17 33 41 38 53 50 5 36 6 49 22 51 27 35 25 52 12 55 15 46 24 A 9 63 16 63 23 54 45 3 77 B 28 79 2 8 37 10 32 82 10 30 E 22 44 67 61 60 73 63 66 59 56 75 69 57 42 59 75 22 71 63 64 22 A A 63 61 58 81 65 78 68 76 G B 70 72 80 74
REF. PART NO. DESCRIPTION REF. PART NO. DESCRIPTION 1 17840 Transmission Mounting Bracket 44 747-04139 Brake Rod 2 618-04228 Wheel Hub Assembly 45 747-1149 Bypass Rod 3 618-04270A Hydrostatic Transmission 46 747-1151 Control Rod 4 629-04124* Harness Assembly 47 748-0334 Transaxle Spacer 5 710-0227 AB Screw #8-18 x 0.375 48 750-0566A Spacer,.260 x.372 x 1.030 Lg. 6 710-0502A TT Sems Screw 3/8-16 x 1.250 49 754-0461 V Belt, A x 78” Lg 7 710-0520 Hex Bolt 3/8-16 x 1.
Illustrated Parts List Model Series 620 26 34 12 32 14 To order replacement parts, call the Customer Service Line at 1-800-800-7310 or visit www.mtdproducts.
Ref. No. Part No. Description Ref. No. Part No. Description 1 710-1260A Screw, 5/16-18 x 0.75 20 712-04064 Nut, Flange Lock, 1/4-20 2 710-3011 Screw, 3/8-16, 2.25, Gr5 21 783-0693 Axle Bracket 3 710-04379A Screw, 7/16-20, 3.50, Gr5, Lock 22 732-04035 Spring, Compress., 1.28 x 3.125 4 712-04065 Nut, Flange Lock, 3/8-16 23 736-0222 Washer, Lock, 1/4, External 5 717-1774B PTO Clutch, Electric 24 710-0604A Screw, 5/16-18, 0.625 6 736-0277 Washer, Flat, 1.031 x 1.620 x.
50” Electric PTO Deck 10 48 49 6 57 56 21 37 11 52 32 46 47 2 13 A 37 53 B 20 54 40 31 18 23 28 8 35 27 3 38 4 9 33 30 26 43 41 1 20 34 16 20 25 20 20 5 45 45 19 15 22 36 7 45 55 44 50 A 51 9 B 12 42 21 12 29 17 24
Ref. No. Part No. Ref. No. Description Hook, Retainer Part No. Description 30 732-0306A Spring, Compression, .531 x 1.75 1 16606 2 618-04126A Spindle Assembly 31 732-0459B Spring, Extension, .94 x 6.74 3 683-0254B Hanger Bracket Assembly 32 732-0934 Spring, Extension, 1.5 x 5.99 4 683-04075 Weldment, 50-inch Deck 33 734-04155 Deck Wheel, 5.0 734-0973 Deck Wheel, 5.0 5 703-3279 Chute Stop 34 6 710-0347 Screw, 3/8-16, 1.
54” Electric PTO Deck 13 61 9 44 55 56 15 48 2 49 56 5 37 21 35 54 27 43 62 38 54 58 17 24 18 28 53 29 49 22 40 32 41 11 34 25 51 60 37 27 33 42 52 3 24 13 7 25 28 36 25 4 12 45 1 30 10 14 20 19 6 65 13 59 67 63 14 26 8 66 50 58 13 4 16 64 39 8 14
Ref. No. Part No. 1 16606 2 Description Ref. No. Hook, Retainer Bracket Part No. Description 35 721-04041 Hose Coupler 618-04125A Spindle Assembly 36 731-3005 Front Roller 3 683-0254B Hanger Bracket Assembly 37 732-0306A Spring,.531OD x 1.75 4 683-04180 54” Deck Weldment 38 732-04247 Spring, Ext.,.850 Dia. x 6.415 5 683-04182 Idler Arm Assembly 39 732-0934 Spring, Ext., 1.15 Dia. x 5.
Illustrated Parts List Kohler Twin Cylinder Engine For Choke 9 To order replacement parts, call the Customer Service Line at 1-800-800-7310 or visit www.mtdproducts.com 6 7 14 8 16 3 17 4 2 15 11 5 12 13 10 1 Ref. No. Part No. Ref. No. Description Part No. Description 1 710-0227 AB Screw #8-18 x 0.5 10 751-0564B Muffler Deflector 2 710-0599 TT Screw 1/4-20 x 0.5 11 751-0644B LH Exhaust Pipe 3 710-0654A TT Screw 3/8-16 x 1.
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