Here are the diagrams and repair parts for Official MTD 138-668-088 lawn tractor, as well as links to manuals and error code tables, if available.
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Single speed transaxle right hand diagram
Part #736-0188
Part #710-0837
Single speed transaxle right hand diagram
Part #710-0809
Choose a symptom to see related riding mower and lawn tractor repairs.
Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…
Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…
Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …
Main causes: shift lever needs adjustment, neutral control needs adjustment…
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…
Main causes: faulty battery, bad alternator…
These step-by-step repair guides will help you safely fix what’s broken on your riding mower or lawn tractor.
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Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.
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Check the starter solenoid, starter motor, wiring, battery and engine.…