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Goodman GUPS120-4 gas furnace Parts
Here are the diagrams and repair parts for Goodman GUPS120-4 gas furnace, as well as links to manuals and error code tables, if available.
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Browse Parts for GUPS120-4 Gas Furnace
Gas train diagram
Manifold, 5
Part #B18264-03
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Heat Exch Su
Part #18212-08S
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Secondary Air Door (gups1405)
Part #18224-20
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Blwr Asm,ser
Part #18682-04S
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Secondary Ai
Part #18224-16
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Heat Exch Su
Part #18212-11S
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Blwr Asm,ser
Part #18682-00S
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Heat Exch Su
Part #18212-07S
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Heat Exch Su
Part #18212-02S
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.
Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee…
Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve…
Things to do: tune up the engine, inject pump saver into the water pump when storing the pressure washer for the winter…
Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba…
Main causes: faulty unloader valve, bad pressure regulator…
Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston…
Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu…
Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re…
Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system fai…
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 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 time and Difficulty
15 minutes or less
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 time and Difficulty
45 minutes or less
How to replace a pressure washer unloader valve
The unloader valve recirculates water to protect the pump from damage. If the unloader valve is defective, replace it us…
Repair time and Difficulty
15 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.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Spray tips vary in pressure and angle of spray. This guide matches the spray tip to the cleaning job.…
See what you can learn from the questions that people most often ask our experts about their pressure washers.…
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