Craftsman
Riding Mowers & Tractors

Model #52821800 Official Craftsman 36" riding rotary mower

Here are the diagrams and repair parts for Craftsman 52821800 36" riding rotary 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:

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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.

Showing 10 of 376 parts

Lawn Tractor Brake Pad (replaces 740107, 790006A, TC-799021A)#79

42086 (peerless model 639) transaxle Diagram

Brake pad

Part #790006
Replaced by #799021
?
Manufacturer substitution
This part replaces 790006. Substitute parts can look different from the original.
BEST SELLER
In Stock
$10.62 | 
16% OFF 
Phone Price: $12.62
Snowblower Skid Shoe (replaces 1740718A, 1740718HMA, 1740718TMA, 301380E701MA)#5

42086 (peerless model 639) transaxle Diagram

Ht adj lh

Part #780061
Replaced by #1740718AYP
?
Manufacturer substitution
This part replaces 780061. Substitute parts can look different from the original.
BEST SELLER
In Stock
$10.25 | 
16% OFF 
Phone Price: $12.25
Lawn Tractor Brake Pad Plate (replaces TC-790007)#80

42086 (peerless model 639) transaxle Diagram

Plate

Part #790007
Replaced by #790007
?
Manufacturer substitution
This part replaces 790007. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$5.29 | 
16% OFF 
Phone Price: $6.29
Lawn Tractor Brake Pad Holder (replaces TC-790025)#81

42086 (peerless model 639) transaxle Diagram

Holder

Part #790005
Replaced by #790025
?
Manufacturer substitution
This part replaces 790005. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$16.19 | 
11% OFF 
Phone Price: $18.19
Lawn & Garden Equipment Transmission Dowel Pin#67

42086 (peerless model 639) transaxle Diagram

Dowel pin

Part #786026
Replaced by #786026B
?
Manufacturer substitution
This part replaces 786026. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$4.14 | 
19% OFF 
Phone Price: $5.14
Lawn Tractor Screw#85A

42086 (peerless model 639) transaxle Diagram

Screw

Part #792085
Replaced by #792085A
?
Manufacturer substitution
This part replaces 792085. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
In Stock
$4.14 | 
19% OFF 
Phone Price: $5.14
Lawn & Garden Equipment Woodruff Key#43

Drive assembly Diagram

Woodruff key

Part #431787
Replaced by #703891
?
Manufacturer substitution
This part replaces 431787. Substitute parts can look different from the original.
This item is not returnable
In Stock
$7.30 | 
12% OFF 
Phone Price: $8.30
Washer

See All Related Diagrams

Washer

Part #120386

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

Locknut 18

See All Related Diagrams

Locknut 18

Part #271184

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

Lawn Tractor Quad Ring#38

42086 (peerless model 639) transaxle Diagram

Quad ring

Part #792001
Replaced by #792001
?
Manufacturer substitution
This part replaces 792001. Substitute parts can look different from the original.
This item is not returnable
In Stock
$2.19

Symptoms common to all 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: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
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 mandrel pulleys
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: clogged carburetor, damaged flywheel key, dirty spark plug, stale fuel, improper valve lash, engine needs a tune up
Main causes: faulty battery, bad alternator
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs 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.

January 1, 2015
By Lyle Weischwill
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.

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

If a blade on your mower is dull or bent, replace it following the steps in this repair guide.

Repair difficulty
Time required
 30 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.

August 6, 2020

How to remove a lawn mower blade using a removal tool

By Lyle Weischwill

Learn how a blade removal tool makes replacing the blade easier and safer

April 9, 2019

Riding mower parts and supplies to stock up on video

By Kim Hillegass

Keep these 6 things on hand to keep the mower season running smoothly.

March 1, 2016

Charging a battery in a riding lawn mower video

By Lyle Weischwill

Learn how to use a battery charger if your mower battery is dead.