From inside (document excerpt):
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). If a spark arrester is used, it should be maintained in effective working order by the operator.
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In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019. PRINTED IN U.S.A. MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019 FORM NO. 769-02978 03/8/2007 Model Series Description Screw, #8-18 x.500 Lift Shaft Assembly Washer, Flat, .344 x .62 x .033 Lock Washer, 5/16 Flange Lock Nut, 3/8-16 Flange Lock Nut, 5/16-18 Inner Seat Spring Switch Hairpin Clip Foot Pad Clips E-Ring Handle Grip Torsion Spring Extension Spring,.84 x 4.6 Flat Washer Insulator Boss Plate Flat Washer, .406 x .875 x .059 Screw, 1/4-20 x.500 Hex Cap Screw, 5/16-18 x.62 Shoulder Screw, 3/8-16 Hex Flange Bearing Sems Nut 1/4-20 Lift Cable, 16.16 Lift Handle Roller Pulley Arm Lift Ref. No. Part No. 731-1993A 710-0451 710-0604A 710-0895 731-1990 738-0296 736-3078 783-0677B 783-1489C 720-04061 712-04064 Description Cover w/ Cup Holder Carriage Bolt, 5/16-18 x.750 Self-tapping Screw, 5/16-18 x.625 Self-tapping Screw, 1/4-15 x.75 Lift Lever Cover Shoulder Screw,.437 x.286 Flat Washer,.349 x 1.0 x.063 Lift Adjustment Bracket Seat Mounting Bracket Knob, 3/8-16 x .875 Flange Lock Nut, 1/4-20 Illustrated Parts List 783-04459A Fender 4 Sty Hydro w/ Flares To order replacement parts, call the Customer Service Line at 1-800-800-7310 or visit www.mtdproducts.com 738-04012A Shoulder Screw, 3/8-16 .625 x .145 757-04003A High Back Seat, Black 783-04081B Seat Pivot Bracket 725-1303 710-0932 735-0656 735-0657 714-0111 726-0279 783-0209D 726-0201 731-2618 731-2619 Outer Seat Spring Switch Carriage Screw 1/4-20 x 1.00 RH Foot Pad LH Foot Pad Cotter Pin Insulator Plate Seat Lift Bracket Speed Clip RH Fender Flare LH Fender Flare NOTE: Tractor features vary by model. NOT all parts listed above and pictured on the previous page are standard equipment.
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