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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 manualBy Schematic
By Part
SELECT DIAGRAM
Browse Parts for 668 Riding Mowers & Tractors
Seat diagram
Spring
Part #732-0735Replaced by #732-0735A
Manufacturer substitutionThis part replaces 732-0735. Substitute parts can look different from the original.This item is not returnableIn Stock$35.64
Qty
Blades diagram
Spindle
Part #618-0240AReplaced by #918-0240C
Manufacturer substitutionThis part replaces 618-0240A. Substitute parts can look different from the original.In Stock$120.639% OFF Phone Price : $132.63
QtyShift Bracket
Part #17630AReplaced by #17630A-0637
Manufacturer substitutionThis part replaces 17630A. Substitute parts can look different from the original.In Stock$28.09QtyBlades diagram
Spacer
Part #750-0960AReplaced by #950-0960A
Manufacturer substitutionThis part replaces 750-0960A. Substitute parts can look different from the original.In Stock$24.43QtyBlades diagram
Belt Cover
Part #17258DReplaced by #17258E-0637
Manufacturer substitutionThis part replaces 17258D. Substitute parts can look different from the original.In Stock$69.858% OFF Phone Price : $75.85QtyEngine diagram
Exhaust Pipe
Part #751-0620Replaced by #751-0620A
Manufacturer substitutionThis part replaces 751-0620. Substitute parts can look different from the original.In Stock$63.2032% OFF Was : $92.94QtySeat diagram
Brake Assy-b
Part #761-0168BReplaced by #961-0168D
Manufacturer substitutionThis part replaces 761-0168B. Substitute parts can look different from the original.In Stock$46.0112% OFF Phone Price : $52.01QtySteering wheel diagram
Spacer
Part #750-0535Replaced by #950-0535
Manufacturer substitutionThis part replaces 750-0535. Substitute parts can look different from the original.This item is not returnableIn Stock$8.20QtyHood 668/688 diagram
Hood-8 Style
Part #783-0478BReplaced by #983-0478B
Manufacturer substitutionThis part replaces 783-0478B. Substitute parts can look different from the original.In Stock$345.93QtyTransaxle diagram
Gauge Pin Belt
Part #711-0993Replaced by #911-0993
Manufacturer substitutionThis part replaces 711-0993. Substitute parts can look different from the original.In Stock$29.61Qty
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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