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Swisher
Rear-Engine Riding Mower

Model # ZT250 Official Swisher 50" z-series tractor

Here are the diagrams and repair parts for Official Swisher ZT250 50" z-series tractor, as well as links to manuals and error code tables, if available.

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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

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ALL PARTS
Showing 10 of 229 parts  |
12 Volt Lawn And Garden Battery (not Shown) U1L

#NI07

All parts diagram

12 volt lawn and garden battery (not shown)

Part #U1L

The manufacturer no longer makes this part, and there's no substitute part

3/8-16 Hnc G NB212
#21

Mowing deck/deck idler diagram

3/8-16 hnc g

Part #NB212

The manufacturer no longer makes this part, and there's no substitute part

Lawn & Garden Equipment Bolt NB604
#35

Mowing deck/deck idler diagram

Lawn & garden equipment bolt

Part #NB604

The manufacturer no longer makes this part, and there's no substitute part

1/4 X 1/2 Ke 4258
#5

Engine/fuel supply diagram

1/4 x 1/2 ke

Part #4258

The manufacturer no longer makes this part, and there's no substitute part

Lawn & Garden Equipment Bolt NB238N
#16

Blade driver diagram

Lawn & garden equipment bolt

Part #NB238N

The manufacturer no longer makes this part, and there's no substitute part

Trans. - Lef 3601CB
#19

Wheels/transmission/transaxle diagram

Trans. - lef

Part #3601CB

The manufacturer no longer makes this part, and there's no substitute part

Parking Brake 3797TK
#10

Parking brake diagram

Parking brake

Part #3797TK

The manufacturer no longer makes this part, and there's no substitute part

Caster - Tex 665TK
#19

Frame diagram

Caster - tex

Part #665TK

The manufacturer no longer makes this part, and there's no substitute part

Rod - E Brak 3390Z
Rod - e brak

Part #3390Z

The manufacturer no longer makes this part, and there's no substitute part

Eyebolt - 5/ NB202
#7

Parking brake diagram

Eyebolt - 5/

Part #NB202

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

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How do I fix a flat tire on my riding mower?

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

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Why does my riding mower run rough or misfire?

Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a…

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Why won't my riding mower move?

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

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Why is the steering loose on my riding mower?

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

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Why is my riding mower leaking oil or gas?

Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …

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Why does my riding mower creep in neutral?

Main causes: shift lever needs adjustment, neutral control needs adjustment…

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Why won't my riding mower cut grass?

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

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Why does my riding mower deck vibrate?

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

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How do I charge a dead battery on my riding mower?

Main causes: faulty battery, bad alternator…

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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.

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How to replace a mandrel assembly on a riding lawn mower

How to replace a mandrel assembly on a riding lawn mower

Replace the mandrel assembly if the blade shaft vibrates or doesn't spin.…

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Repair difficulty
Time required
 30 minutes or less
How to replace the flywheel key on a riding lawn mower

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…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a riding lawn mower ignition coil

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…

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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.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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Riding lawn mower engine clicks but doesn't turn over video

Riding lawn mower engine clicks but doesn't turn over video

Check the starter solenoid, starter motor, wiring, battery and engine.…

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