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Craftsman
Water Pump

Model # 3902509 Official Craftsman well water system

Here are the diagrams and repair parts for Official Craftsman 3902509 well water system, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 34 parts  |
Pump Body Gasket J20-18
#16

Pump only diagram

Pump body gasket

Part #J20-18

Replaced by #J20-18C

?
Manufacturer substitution
This part replaces J20-18. Substitute parts can look different from the original.
This item is not returnable
$9.99 | 
9% OFF Phone Price : $10.99
Back Order
Slinger C69-2
#2

Pump only diagram

Slinger

Part #C69-2

Replaced by #17351-0009

?
Manufacturer substitution
This part replaces C69-2. Substitute parts can look different from the original.
This item is not returnable
$8.89 | 
10% OFF Phone Price : $9.89
Back Order
Shaft Seal 2784
#6

Pump only diagram

Shaft seal

Part #2784

Replaced by #U109-6B

?
Manufacturer substitution
This part replaces 2784. Substitute parts can look different from the original.
$106.69 | 
10% OFF Phone Price : $118.69
Back Order
Screw U30-738SS
#10

Pump only diagram

Screw

Part #U30-738SS

$15.43
In Stock
Pump Check Valve (replaces N12-12p) N166-5P
#12B

Pump only diagram

Pump check valve (replaces n12-12p)

Part #N166-5P

$123.89 | 
9% OFF Phone Price : $135.89
In Stock
Pump Impeller J105-40PF
#7

Pump only diagram

Pump impeller

Part #J105-40PF

$139.59 | 
8% OFF Phone Price : $151.59
In Stock
Pump Diffuser N1-28P
#9

Pump only diagram

Pump diffuser

Part #N1-28P

$82.91
In Stock
Pump Housing O-ring U9-390
#5

Pump only diagram

Pump housing o-ring

Part #U9-390

This item is not returnable
$43.59 | 
12% OFF Phone Price : $49.59
In Stock
Pump Diffuser Rubber Pad C35-41
#8

Pump only diagram

Pump diffuser rubber pad

Part #C35-41

$12.93
In Stock
Sta-rite Pump Pressure Switch Tube U37-670P
#15

Pump only diagram

Sta-rite pump pressure switch tube

Part #U37-670P

$8.09
In Stock

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