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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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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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$22.14 | 
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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 | 
16% OFF Phone Price : $6.31
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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

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

Main causes: faulty battery, bad alternator…

Read more

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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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 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 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 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, …

Read more

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 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 move?

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

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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 the starter motor on a riding lawn mower

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 replac…

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Repair difficulty
Time required
 30 minutes or less
How to rebuild a riding lawn mower carburetor

How to rebuild a riding lawn mower carburetor

Get your sputtering carburetor running smoothly in 60 minutes.…

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 60 minutes or less
How to replace a riding lawn mower rear tire

How to replace a riding lawn mower rear tire

Your mower can’t run on a damaged rear tire. Here’s how to install a new one.…

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Repair difficulty
Time required
 60 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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