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Generac
Gas Pressure Washer

Model # 1539-0 Official Generac pressure washer

Here are the diagrams and repair parts for Official Generac 1539-0 pressure washer, 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 129 parts  |
O-ring 11587628PGS
#11

Pump diagram

O-ring

Part #11587628PGS

Replaced by #192914GS

?
Manufacturer substitution
This part replaces 11587628PGS. Substitute parts can look different from the original.
This item is not returnable
$26.70 | 
18% OFF Phone Price : $32.70
In Stock
O-ring 231B2327GS
#6

Unloader diagram

O-ring

Part #231B2327GS

Replaced by #192914GS

?
Manufacturer substitution
This part replaces 231B2327GS. Substitute parts can look different from the original.
This item is not returnable
$26.70 | 
18% OFF Phone Price : $32.70
In Stock
Pressure Washer Chemical Injector Hose A1040DGS
Pressure washer chemical injector hose

Part #A1040DGS

Replaced by #705076

?
Manufacturer substitution
This part replaces A1040DGS. Substitute parts can look different from the original.
This item is not returnable
$21.89 | 
22% OFF Phone Price : $27.89
In Stock
Gun, 4000p B1436BGS
#20

Unit diagram

Gun, 4000p

Part #B1436BGS

Replaced by #704311

?
Manufacturer substitution
This part replaces B1436BGS. Substitute parts can look different from the original.
$106.06 | 
10% OFF Phone Price : $118.06
In Stock
Generac Pressure Washer Nozzle Decal 187974AGS
#11

Unit diagram

Generac pressure washer nozzle decal

Part #187974AGS

$24.31
In Stock
Generac Plug 248B2327GS
#25

Unloader diagram

Generac plug

Part #248B2327GS

$22.11
In Stock
Troybilt Pressure Washer O-ring 225B2327GS
#21

Unloader diagram

Troybilt pressure washer o-ring

Part #225B2327GS

This item is not returnable
$5.40
In Stock
Craftsman Pressure Washer Unloader Valve Assembly 153B2126GS
#0

Unloader diagram

Craftsman pressure washer unloader valve assembly

Part #153B2126GS

$279.61 | 
$12.00 OFF Phone Price : $291.61
In Stock
Craftsman Screw 11087822PGS
#7

Pump diagram

Craftsman screw

Part #11087822PGS

$12.09 | 
14% OFF Phone Price : $14.09
In Stock
Troybilt Dipstick 11287628PGS
Troybilt dipstick

Part #11287628PGS

$40.56
In Stock

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

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Why won't my pressure washer mix in the detergent?

Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system fai…

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Why is smoke coming from the pressure washer's exhaust?

Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee…

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Why won't the pressure washer starter rope retract?

Main causes: broken recoil spring, damaged recoil starter…

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Why does my pressure washer's engine lose power?

Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve…

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Why is the spray from my pressure washer weak?

Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu…

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Why doesn't my pressure washer recoil starter work?

Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston…

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Why does my pressure washer spray too hard?

Main causes: faulty unloader valve, bad pressure regulator…

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Why won't my pressure washer engine start?

Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re…

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Why does water spray out of my pressure washer's pressure relief valve?

Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba…

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Repair guides for gas pressure washers

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

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How to install a pressure washer check valve kit

How to install a pressure washer check valve kit

Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valv…

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Repair difficulty
Time required
 120 minutes or less
How to install a pressure washer O-ring kit

How to install a pressure washer O-ring kit

O-rings seal fittings on the pressure washer pump. Damaged seals allow water to leak from the pump. Follow these steps t…

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Repair difficulty
Time required
 45 minutes or less
How to install a pressure washer chemical injection kit

How to install a pressure washer chemical injection kit

The chemical injection valve draws detergent into the pump. If it’s not drawing detergent, use a repair kit to replace t…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your pressure washers

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

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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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Tapping into a new feature in the Search Bar on Sears PartsDirect

Tapping into a new feature in the Search Bar on Sears PartsDirect

Learn about a new feature added to the Search Bar on Sears PartsDirect…

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Top questions about Sears and Sears PartsDirect

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