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Homelite
Gas Pressure Washer

Model # UT80977 Official Homelite power washer

Here are the diagrams and repair parts for Official Homelite UT80977 power washer, as well as links to manuals and error code tables, if available.

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  • 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”.

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

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 176 parts  |
Bolt 099980425065
#65

Engine assy diagram

Bolt

Part #099980425065

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

Nut 099980425075
#77

Engine assy diagram

Nut

Part #099980425075

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

Pump Protector 120900147
#NI

Frame assy diagram

Pump protector

Part #120900147

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

Connecting Rod 099980425037
#37

Engine assy diagram

Connecting rod

Part #099980425037

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

Governor Washer 099980425021
#21

Engine assy diagram

Governor washer

Part #099980425021

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

Shieldlowe 099980425059
#59

Engine assy diagram

Shieldlowe

Part #099980425059

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

Bolt 099980425062
#62

Engine assy diagram

Bolt

Part #099980425062

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

Retainer E 099980425044
#44

Engine assy diagram

Retainer e

Part #099980425044

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

Hex Head Bolt 660764002
#18

Frame assy diagram

Hex head bolt

Part #660764002

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

Bearing 099980425108
#19

Engine assy diagram

Bearing

Part #099980425108

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

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

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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 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 won't the pressure washer starter rope retract?

Main causes: broken recoil spring, damaged recoil starter…

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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 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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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 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 doesn't my pressure washer recoil starter work?

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

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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 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
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 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…

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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

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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