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Model # 74373 (290004013 AND UP) Official Toro riding lawn mower
Here are the diagrams and repair parts for Official Toro 74373-290004013-AND-UP riding lawn mower, as well as links to manuals and error code tables, if available.
There are a couple of ways to find the part or diagram you need:
- Click a diagram to see the parts shown on that diagram.
- In the search box below, enter all or part of the part number or the part’s name.
Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.
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For DIY troubleshooting advice and repair guides, visit our repair help section.
Model diagram and schematic
SEARCH WITHIN THIS MODEL
ALL PARTS
Showing 10 of 457 parts |
#19
Engine & clutch assembly diagram
Lawn tractor fuel line
Part #107-0589
$16.57
In Stock
#5:5
Frame & castor wheel assembly diagram
Zerk fitting
Part #302-5
This item is not returnable
$2.16
In Stock
#11
50" deck spindle & blade diagram
Lawn tractor nut
Part #3219-6
This item is not returnable
$3.86
In Stock
#36
Control assembly diagram
Decal container
Part #112-9750
$9.00
In Stock
#17
50" deck spindle & blade diagram
Lawn tractor 50-in deck high-lift blade
Part #110-6837-03
$39.11
In Stock
#20
Deck lift & seat support diagram
Decal
Part #106-8743
This item is not returnable
$4.29
In Stock
Gear
Part #104-5317
$232.25
In Stock
#8
Hydro drive assembly diagram
Cap screw
Part #322-7
This item is not returnable
$2.16
In Stock
#18
Seat assembly diagram
Pin-clevis
Part #60-1730
This item is not returnable
$2.16
In Stock
#8
Electrical assembly diagram
Lawn tractor starter solenoid
Part #117-1197
$110.13
In Stock
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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: 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…
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 a mandrel assembly on a riding lawn mower
Replace the mandrel assembly if the blade shaft vibrates or doesn't spin.…
Repair difficulty
Time required
30 minutes or less
How to replace the flywheel key on a riding lawn mower
If the engine won't restart after hitting a stump or rock, the problem could be a sheared flywheel key. Follow these ste…
Repair difficulty
Time required
60 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 difficulty
Time required
30 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.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Check the starter solenoid, starter motor, wiring, battery and engine.…