Generac
Gas Pressure Washer

Model # 1538-0 Official Generac pressure washer

Here are the diagrams and repair parts for Official Generac 1538-0 pressure washer, 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:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 73 parts  |

Cleaning Kit B2509
#30

Unit diagram

Cleaning kit

Part #B2509

Replaced by #705001

?
Manufacturer substitution
This part replaces B2509. Substitute parts can look different from the original.
BEST SELLER
$26.82
18% OFF Phone Price : $32.82
In Stock
O-ring Kit B5830
#21

Unit diagram

O-ring kit

Part #B5830

Replaced by #705001

?
Manufacturer substitution
This part replaces B5830. Substitute parts can look different from the original.
BEST SELLER
$26.82
18% OFF Phone Price : $32.82
In Stock
Extension Wand B3858
#28

Unit diagram

Extension wand

Part #B3858

Replaced by #706595

?
Manufacturer substitution
This part replaces B3858. Substitute parts can look different from the original.
$52.32
10% OFF Phone Price : $58.32
In Stock
Gasket A2069
#12

Pump diagram

Gasket

Part #A2069

Replaced by #A2069GS

?
Manufacturer substitution
This part replaces A2069. Substitute parts can look different from the original.
This item is not returnable
$7.79
11% OFF Phone Price : $8.79
In Stock
Hose A1040D
#33

Unit diagram

Hose

Part #A1040D

Replaced by #705076

?
Manufacturer substitution
This part replaces A1040D. Substitute parts can look different from the original.
This item is not returnable
$21.89
22% OFF Phone Price : $27.89
In Stock
Head 185752
#34

Pump diagram

Head

Part #185752

Replaced by #317054GS

?
Manufacturer substitution
This part replaces 185752. Substitute parts can look different from the original.
$418.64
$12.00 OFF Phone Price : $430.64
In Stock
Piston Seal 93680
#21

Pump diagram

Piston seal

Part #93680

Replaced by #93680GS

?
Manufacturer substitution
This part replaces 93680. Substitute parts can look different from the original.
This item is not returnable
$10.88
16% OFF Phone Price : $12.88
In Stock
Nozzle Kit B4847
#38

Unit diagram

Nozzle kit

Part #B4847

Replaced by #B4847GS

?
Manufacturer substitution
This part replaces B4847. Substitute parts can look different from the original.
In Stock
O-ring B2218
#1

Pump diagram

O-ring

Part #B2218

Replaced by #B2218GS

?
Manufacturer substitution
This part replaces B2218. Substitute parts can look different from the original.
This item is not returnable
$6.69
13% OFF Phone Price : $7.69
In Stock
Nut 99583
#11

Unit diagram

Nut

Part #99583

Replaced by #99583GS

?
Manufacturer substitution
This part replaces 99583. Substitute parts can look different from the original.
This item is not returnable
In Stock

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

Main causes: faulty unloader valve, bad pressure regulator…

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

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

Main causes: broken recoil spring, damaged recoil starter…

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

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

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

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

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

Repair guides for gas pressure washers

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

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…

Repair difficulty
Time required
 15 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…

Repair difficulty
Time required
 45 minutes or less
How to replace a pressure washer pump

How to replace a pressure washer pump

The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the ch…

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.

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.…

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…

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.…