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Husqvarna
Rear-Engine Riding Mower

Model # CZ3815 Official Husqvarna tractor

Here are the diagrams and repair parts for Official Husqvarna CZ3815 tractor, as well as links to manuals and error code tables, if available.

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  • 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.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 220 parts  |
Blade, 42" 5391104-60
#17

42" deck assembly diagram

Blade, 42"

Part #5391104-60

Replaced by #532138971

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Manufacturer substitution
This part replaces 5391104-60. Substitute parts can look different from the original.
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Screw 5391076-30
Screw

Part #5391076-30

Replaced by #584953901

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Manufacturer substitution
This part replaces 5391076-30. Substitute parts can look different from the original.
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$5.31 | 
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Hinge Rod 5391104-62
#26

42" deck assembly diagram

Hinge rod

Part #5391104-62

Replaced by #595297001

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Manufacturer substitution
This part replaces 5391104-62. Substitute parts can look different from the original.
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$7.05 | 
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In Stock
Igniter Switch 5391075-41
#3

Console assembly diagram

Igniter switch

Part #5391075-41

Replaced by #175566

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Manufacturer substitution
This part replaces 5391075-41. Substitute parts can look different from the original.
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$28.29 | 
17% OFF Phone Price : $34.29
In Stock
Shield 5391104-61
#25

42" deck assembly diagram

Shield

Part #5391104-61

Replaced by #532130968

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Manufacturer substitution
This part replaces 5391104-61. Substitute parts can look different from the original.
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$34.98 | 
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Washer, 5/16-in 5399906-92
Washer, 5/16-in

Part #5399906-92

Replaced by #596134901

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Manufacturer substitution
This part replaces 5399906-92. Substitute parts can look different from the original.
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$3.98 | 
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Stripper-rou 5391075-18
Stripper-rou

Part #5391075-18

Replaced by #531167701

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Manufacturer substitution
This part replaces 5391075-18. Substitute parts can look different from the original.
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$9.31 | 
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Washer 5399901-22
Washer

Part #5399901-22

Replaced by #596565301

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Manufacturer substitution
This part replaces 5399901-22. Substitute parts can look different from the original.
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$5.11
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Nut 1/4-20 N 5399769-78
Nut 1/4-20 n

Part #5399769-78

Replaced by #582478602

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Manufacturer substitution
This part replaces 5399769-78. Substitute parts can look different from the original.
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$2.64 | 
27% OFF Phone Price : $3.64
In Stock
Jam Nut 1/4c 5391081-20
#7

Motion control diagram

Jam nut 1/4c

Part #5391081-20

Replaced by #582478602

?
Manufacturer substitution
This part replaces 5391081-20. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.64 | 
27% OFF Phone Price : $3.64
In Stock

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

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

View all

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…

Read more

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

Main causes: faulty battery, bad alternator…

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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 won't my riding mower start?

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

Read more

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 does my riding mower creep in neutral?

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

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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 my riding mower not cutting evenly?

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

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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…

Read more
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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