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Rheem
Furnace

Model # GUF Official Rheem furnace

Here are the diagrams and repair parts for Official Rheem GUF furnace, as well as links to manuals and error code tables, if available.

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

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Model diagram and schematic

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ALL PARTS
Showing 10 of 78 parts  |
Capacitor 43-20847-10
#13A

Replacement parts diagram

Capacitor

Part #43-20847-10

Replaced by #12907

?
Manufacturer substitution
This part replaces 43-20847-10. Substitute parts can look different from the original.
This item is not returnable
$4.87 | 
17% OFF Phone Price : $5.87
In Stock
Relay-plug 42-19423-01
#15

Replacement parts diagram

Relay-plug

Part #42-19423-01

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

Ign Control 62-21192-06
#16

Replacement parts diagram

Ign control

Part #62-21192-06

Replaced by #BG1600M51EF-1AA

?
Manufacturer substitution
This part replaces 62-21192-06. Substitute parts can look different from the original.
$191.94 | 
6% OFF Phone Price : $203.94
In Stock
Ign Control 62-21192-07
#16A

Replacement parts diagram

Ign control

Part #62-21192-07

Replaced by #BG1600M51EF-1AA

?
Manufacturer substitution
This part replaces 62-21192-07. Substitute parts can look different from the original.
$191.94 | 
6% OFF Phone Price : $203.94
In Stock
Orifice 62-22175-54

#NI

All parts diagram

Orifice

Part #62-22175-54

$27.31
In Stock
Pilot Burner 62-21609-01
#22A

Replacement parts diagram

Pilot burner

Part #62-21609-01

$106.76
In Stock
Weatherking Blow Cutoff AE-64401-05

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-05

$29.67
In Stock
Weatherking Blow Cutoff AE-64401-07

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-07

$21.71
In Stock
Orifice 62-22175-42

#NI

All parts diagram

Orifice

Part #62-22175-42

$15.83
In Stock
Orifice 62-22175-45

#NI

All parts diagram

Orifice

Part #62-22175-45

$28.43
In Stock

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Why does my lawn mower stall?

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

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Why won't my lawn mower start?

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

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Why does my lawn mower cut unevenly?

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

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Why won't my lawn mower move?

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

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Why does my lawn mower run rough?

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

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Why does my lawn mower vibrate a lot?

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

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Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

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Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower carburetor

How to replace a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Replace the carburetor if it's clogged or damaged.…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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