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Kenmore
Water Pump

Model # 390255401 Official Kenmore high-pressure booster pump

Here are the diagrams and repair parts for Official Kenmore 390255401 high-pressure booster 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 29 parts  |
Sta-rite Seal Plate N3-8
#4

Replacement parts diagram

Sta-rite seal plate

Part #N3-8

$45.82
In Stock
Craftsman Handle C54-21
#2

Replacement parts diagram

Craftsman handle

Part #C54-21

$10.70
In Stock
Sta-rite Gasket N20-26
#6

Replacement parts diagram

Sta-rite gasket

Part #N20-26

$13.05
In Stock
Craftsman Pump Shaft Seal U109-118
#5

Replacement parts diagram

Craftsman pump shaft seal

Part #U109-118

$191.99 | 
6% OFF Phone Price : $203.99
In Stock
Sears O-ring U9-49
#12

Replacement parts diagram

Sears o-ring

Part #U9-49

This item is not returnable
$5.23
In Stock
Slinger N69-1
#3

Replacement parts diagram

Slinger

Part #N69-1

Replaced by #17351-0009

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Manufacturer substitution
This part replaces N69-1. Substitute parts can look different from the original.
This item is not returnable
$8.89 | 
10% OFF Phone Price : $9.89
Back Order
Motor 1/2 Hp J218-590
#1

Replacement parts diagram

Motor 1/2 hp

Part #J218-590

Replaced by #J218-590PKG

?
Manufacturer substitution
This part replaces J218-590. Substitute parts can look different from the original.
$551.39 | 
$12.00 OFF Phone Price : $563.39
In Stock
Cord Plug U17-402
#23

Replacement parts diagram

Cord plug

Part #U17-402

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

Connector U71-7
#24

Replacement parts diagram

Connector

Part #U71-7

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

Cap Screw U30-573SSN
#16

Replacement parts diagram

Cap screw

Part #U30-573SSN

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

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Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

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Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

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Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

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Repair difficulty
Time required
 30 minutes or less

Articles and videos for treadmills

Use the advice and tips in these articles and videos to get the most out of your treadmill.

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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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How to use a multimeter to test electrical parts video

How to use a multimeter to test electrical parts video

Learn how to use a multimeter to check for wiring problems in an appliance that's not working…

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