Generac
Gas Pressure Washer

Model #0457-0 Generac 5-hp 1800-psi pressure washer

Here are the diagrams and repair parts for Generac 0457-0 5-hp 1800-psi pressure washer, as well as links to manuals and error code tables, if available.

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    Showing 10 of 146 parts

    Pressure Washer Washer

    #25

    Pump assembly Diagram

    Pressure washer washer

    Part #11187822PGS
    ?
    Manufacturer substitution
    This part replaces 111-87822P. Substitute parts can look different from the original.
    This part replaces 111-87822P
    This item is not returnable
    $2.51 | 
    24% OFF 
    MSRP: $3.30

    In Stock

    Adjustable Knob

    #20

    Pump assembly Diagram

    Adjustable knob

    Part #96741GS
    ?
    Manufacturer substitution
    This part replaces 96741. Substitute parts can look different from the original.
    This part replaces 96741
    $9.76 | 
    39% OFF 
    MSRP: $16.00

    In Stock

    Pressure Washer Pump Piston Seal

    #16

    Pump assembly Diagram

    Pressure washer pump piston seal

    Part #16593360PGS
    ?
    Manufacturer substitution
    This part replaces 165-93360P. Substitute parts can look different from the original.
    This part replaces 165-93360P
    $23.82

    In Stock

    Bearing

    #20

    Pump assembly Diagram

    Bearing

    Part #10987628PGS
    ?
    Manufacturer substitution
    This part replaces 109-87628P. Substitute parts can look different from the original.
    This part replaces 109-87628P
    $102.96

    In Stock

    Lawn & Garden Equipment Screw

    #16

    Pump assembly Diagram

    Lawn & garden equipment screw

    Part #96740GS
    ?
    Manufacturer substitution
    This part replaces 96740. Substitute parts can look different from the original.
    This part replaces 96740
    This item is not returnable
    $2.51 | 
    30% OFF 
    MSRP: $3.60

    In Stock

    Pressure Washer O-Ring Kit

    #NI

    All parts Diagram

    Pressure washer o-ring kit

    Part #705001
    ?
    Manufacturer substitution
    This part replaces 100516GS. Substitute parts can look different from the original.
    This part replaces 100516GS
    $15.99 | 
    20% OFF 
    MSRP: $20.00

    In Stock

    Gasket

    #15

    Main assembly Diagram

    Gasket

    Part #91841GS
    ?
    Manufacturer substitution
    This part replaces 91841. Substitute parts can look different from the original.
    This part replaces 91841
    This item is not returnable
    $2.82 | 
    34% OFF 
    MSRP: $4.30

    In Stock

    Pressure Washer Water Hose

    #NI

    All parts Diagram

    Pressure washer water hose

    Part #206192GS
    ?
    Manufacturer substitution
    This part replaces 100513GS. Substitute parts can look different from the original.
    This part replaces 100513GS
    $76.99 | 
    23% OFF 
    MSRP: $100.00

    In Stock

    Cap

    #42

    Pump assembly Diagram

    Cap

    Part #10387628PGS
    ?
    Manufacturer substitution
    This part replaces 103-87628P. Substitute parts can look different from the original.
    This part replaces 103-87628P
    $12.26 | 
    32% OFF 
    MSRP: $18.00

    In Stock

    Circle Clip

    #19

    Pump assembly Diagram

    Circle clip

    Part #10887628PGS
    ?
    Manufacturer substitution
    This part replaces 108-87628P. Substitute parts can look different from the original.
    This part replaces 108-87628P
    This item is not returnable
    $4.36 | 
    33% OFF 
    MSRP: $6.50

    In Stock

    Symptoms for gas pressure washers

    Choose a symptom to see related pressure washer repairs.

    Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, bad unloader valve
    Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system failure
    Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine needs tune up
    Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston
    Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad recoil starter
    Main causes: faulty unloader valve, bad pressure regulator
    Main causes: broken recoil spring, damaged recoil starter
    Things to do: tune up the engine, inject pump saver into the water pump when storing the pressure washer for the winter
    Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stuck unloader valve

    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 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 valves, follow these steps to replace the check valves.

    Repair difficulty
    Time required
     120 minutes or less
    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 the chemical injection valve.

    Repair difficulty
    Time required
     15 minutes or less
    April 1, 2013
    By Lyle Weischwill
    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 to replace the O-rings in a leaking pressure washer pump.

    Repair difficulty
    Time required
     45 minutes or less

    Articles and videos for gas pressure washers

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

    March 1, 2016

    Getting the most from a pressure washer

    By Sears PartsDirect staff

    Learn how to get the best results when using a pressure washer.

    January 1, 2016

    Choosing the correct spray tip for a pressure washer

    By Sears PartsDirect staff

    Spray tips vary in pressure and angle of spray. This guide matches the spray tip to the cleaning job.

    November 1, 2015

    7 steps for winterizing and storing a pressure washer

    By Sears PartsDirect staff

    Follow this advice to winterize your pressure washer.