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MTD 663 lawn tractor Parts
Here are the diagrams and repair parts for MTD 663 lawn tractor, as well as links to manuals and error code tables, if available.
Owner’s manualBy Schematic
By Part
SELECT DIAGRAM
Browse Parts for 663 Riding Mowers & Tractors
Engine diagram
Riding Lawn Mower Engine Pulley
Part #756-04023Replaced by #956-04023
Manufacturer substitutionThis part replaces 756-04023. Substitute parts can look different from the original.In Stock$191.38
Qty
Grille/ hood and fender diagram
Wire
Part #746-0634Replaced by #946-0634
Manufacturer substitutionThis part replaces 746-0634. Substitute parts can look different from the original.This item is not returnableIn Stock$21.46QtyEngine diagram
Mulching Deflector
Part #751-0564AReplaced by #751-0564B
Manufacturer substitutionThis part replaces 751-0564A. Substitute parts can look different from the original.This item is not returnableIn Stock$25.2819% OFF Phone Price : $31.28
QtyDeck "g" diagram
Deck Asm. 42
Part #683-0141Replaced by #983-0141B-0637
Manufacturer substitutionThis part replaces 683-0141. Substitute parts can look different from the original.In Stock$882.49$12.00 OFF Phone Price : $894.49QtyDrive diagram
Plly-var Sp
Part #717-0800AReplaced by #917-0800A
Manufacturer substitutionThis part replaces 717-0800A. Substitute parts can look different from the original.In Stock$255.86$12.00 OFF Phone Price : $267.86QtyDrive diagram
Belt
Part #754-0370Get free shipping with Automatic ReorderReplaced by #954-0370
Manufacturer substitutionThis part replaces 754-0370. Substitute parts can look different from the original.In Stock$55.6210% OFF Phone Price : $61.62QtyWasher
Part #736-0256Replaced by #936-0256
Manufacturer substitutionThis part replaces 736-0256. Substitute parts can look different from the original.In Stock$34.68QtyDeck "h" diagram
Belt Cover
Part #17258AReplaced by #17258E-0637
Manufacturer substitutionThis part replaces 17258A. Substitute parts can look different from the original.In Stock$69.858% OFF Phone Price : $75.85QtyHinge Pin
Part #711-0792Replaced by #911-0792
Manufacturer substitutionThis part replaces 711-0792. Substitute parts can look different from the original.In Stock$31.12QtyLawn Tractor Hex Bolt
Part #710-3151Replaced by #710-3151A
Manufacturer substitutionThis part replaces 710-3151. Substitute parts can look different from the original.This item is not returnableIn Stock$28.23Qty
Most common symptoms to help you fix your riding mowers & tractors
Choose a symptom to see related riding mower and lawn tractor repairs.
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…
Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …
Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …
Main causes: faulty battery, bad alternator…
Main causes: shift lever needs adjustment, neutral control needs adjustment…
Most common repair guides to help fix your riding mowers & tractors
These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.
How to replace the starter solenoid on a riding lawn mower
Replace the starter solenoid if it doesn't click when you turn the ignition key.…
Repair time and Difficulty
30 minutes or less
How to replace a riding lawn mower ignition coil
If you're not getting spark from a good spark plug, the problem could be the ignition coil. Follow these step-by-step in…
Repair time and Difficulty
30 minutes or less
How to replace a riding lawn mower fuel filter
Help your mower run better by replacing the fuel filter during your riding mower's annual tune-up.…
Repair time and Difficulty
15 minutes or less
Effective articles & videos to help repair your riding mowers & tractors
Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Learn some of the most common symbols found in a wiring diagram and what they mean.…
Learn how to connect cables safely to jump-start your mower’s battery.…
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