Swisher
Rear-Engine Riding Mower

Model #ZT18542 Swisher zero-turn riding lawn mower

Here are the repair parts and diagrams for your Swisher ZT18542 zero-turn riding lawn mower. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

Save to my profileOwner’s manual

Showing 10 of 247 parts

Nut - Lock 5

#25

Steering Diagram

Nut - lock 5

Part #NB558

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

11-HP B&S ENGINE, N/A

#1

Engine/fuel supply Diagram

11-hp b&s engine, n/a

Part #N/P

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

Lawn & Garden Equipment Bolt

#NI15

All parts Diagram

Lawn & garden equipment bolt

Part #NB102

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

Lawn & Garden Equipment Hex Head Bolt

#7

Wheel/transaxle/transmission Diagram

Lawn & garden equipment hex head bolt

Part #NB107

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

Lawn & Garden Equipment Nut

#10

Steering Diagram

Lawn & garden equipment nut

Part #NB121

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

1/4 Split Lock Washer

#15

Parking brake Diagram

1/4 split lock washer

Part #NB135

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

5/16-18 X 8

#3

Mowing deck/deck idler Diagram

5/16-18 x 8

Part #NB136

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

5/16-18 X 2

#26

Frame Diagram

5/16-18 x 2

Part #NB138

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

5/16-18 Jam

#12

Parking brake Diagram

5/16-18 jam

Part #NB173

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

Lawn & Garden Equipment Lock Nut

#1

Blade driver Diagram

Lawn & garden equipment lock nut

Part #NB175

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

Symptoms common to all riding mowers & tractors

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

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
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 tune up
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
Main causes: shift lever needs adjustment, neutral control needs adjustment
Main causes: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a tune up

Repair guides common to all 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 motor on a riding lawn mower

If you hear the solenoid click but don’t hear the starter motor spin when you turn the key, follow these steps to replace it.

Repair difficulty
Time required
 30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower spark plug

If the engine is hard to start or if the spark plug electrode is burnt or cracked, take 15 minutes to replace it.

Repair difficulty
Time required
 15 minutes or less
January 1, 2015
By Lyle Weischwill
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 difficulty
Time required
 15 minutes or less

Articles and videos common to all 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.

May 1, 2017

Riding lawn mower engine spins but won't start video

By Sears PartsDirect staff

Troubleshoot fuel, spark and compression issues.

June 1, 2016

How to mow a lawn for healthier grass

By Erin Hynes

How often and tall you mow your lawn has a big impact on its health. Check out these 3 rules.

March 1, 2016

How to change the Smart Switch Ignition password on a lawn tractor video

By Sears PartsDirect staff

See how to unlock the factory default start code so you can set your own passcode.