Craftsman
Water Pump

Model # 471445850 Official Craftsman piston pump

Here are the diagrams and repair parts for Official Craftsman 471445850 piston pump, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 35 parts  |

O-ring 5072066
#4

Replacement parts diagram

O-ring

Part #5072066

Replaced by #U9-49

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Manufacturer substitution
This part replaces 5072066. Substitute parts can look different from the original.
This item is not returnable
In Stock
Retainer 5108030
#13

Replacement parts diagram

Retainer

Part #5108030

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

Screw 5034141
#25

Replacement parts diagram

Screw

Part #5034141

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

Spring 5019042
#12

Replacement parts diagram

Spring

Part #5019042

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

Body 5002148
#1

Replacement parts diagram

Body

Part #5002148

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

Ring 5110059
#15

Replacement parts diagram

Ring

Part #5110059

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

Overhaul Kit 5168090
#28

Replacement parts diagram

Overhaul kit

Part #5168090

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

Gasket 5072036
#26

Replacement parts diagram

Gasket

Part #5072036

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

Ring 5110027
#16

Replacement parts diagram

Ring

Part #5110027

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

Ring 5110061
#32

Replacement parts diagram

Ring

Part #5110061

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

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower wheel

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…

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.…

Lawn mower won't start troubleshooting video: can't pull recoil pull cord

Lawn mower won't start troubleshooting video: can't pull recoil pull cord

A blade obstruction, bad recoil starter or locked-up engine can prevent the pull cord on your mower from working. See ho…