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MTD 668 lawn tractor Parts
Here are the diagrams and repair parts for MTD 668 lawn tractor, as well as links to manuals and error code tables, if available.
Owner’s manual
By Schematic
By Part
SELECT DIAGRAM
Browse Parts for 668 Riding Mowers & Tractors
Lawn & Garden Equipment Self-tapping Screw
Part #710-0726Replaced by #710-0726
Manufacturer substitutionThis part replaces 710-0726. Substitute parts can look different from the original.This item is not returnableIn Stock$5.6415% OFF Phone Price : $6.64
Qty
Brake assembly diagram
Sleeve Bearing
Part #741-0340Replaced by #741-05060
Manufacturer substitutionThis part replaces 741-0340. Substitute parts can look different from the original.This item is not returnableIn Stock$15.9211% OFF Phone Price : $17.92QtySteering wheel diagram
Pivot Bar
Part #683-0002AReplaced by #753-0642-0637
Manufacturer substitutionThis part replaces 683-0002A. Substitute parts can look different from the original.In Stock$133.088% OFF Phone Price : $145.08QtyBlades diagram
Belt
Part #754-0440Get free shipping with Automatic ReorderReplaced by #954-0440
Manufacturer substitutionThis part replaces 754-0440. Substitute parts can look different from the original.In Stock$70.76QtyTransaxle diagram
Index Bracket
Part #783-04113Replaced by #783-04113P
Manufacturer substitutionThis part replaces 783-04113. Substitute parts can look different from the original.In Stock$60.96QtyTransmission diagram
V-belt
Part #754-04001AGet free shipping with Automatic ReorderReplaced by #954-04001A
Manufacturer substitutionThis part replaces 754-04001A. Substitute parts can look different from the original.In Stock$31.77QtyBlades diagram
Blade-3 In 1
Part #742-0612AGet free shipping with Automatic ReorderReplaced by #942-0612A
Manufacturer substitutionThis part replaces 742-0612A. Substitute parts can look different from the original.In Stock$32.9815% OFF Phone Price : $38.98QtyEngine 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 : $31.28QtySeat diagram
Ext Spring 5
Part #732-0581BReplaced by #932-0581B
Manufacturer substitutionThis part replaces 732-0581B. Substitute parts can look different from the original.In Stock$26.29QtyBlades diagram
Chute Assembly
Part #731-1032Replaced by #631-05229
Manufacturer substitutionThis part replaces 731-1032. Substitute parts can look different from the original.In Stock$108.8610% OFF Phone Price : $120.86Qty
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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