Manning Bowman
Space Heater

Model # 321420A Official Manning Bowman oil-fired floor furnace

Here are the diagrams and repair parts for Official Manning Bowman 321420A oil-fired floor furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 55 parts  |

Lo Fire Ring Y7223
#21

Replacement parts diagram

Lo fire ring

Part #Y7223

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

Feed Line Y7052
#42A

Replacement parts diagram

Feed line

Part #Y7052

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

Cover K3386
#10

Replacement parts diagram

Cover

Part #K3386

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

Pot Tube Y7057
#23

Replacement parts diagram

Pot tube

Part #Y7057

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

Feed Line Y7435
#42B

Replacement parts diagram

Feed line

Part #Y7435

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

Chamber Assembly Y7064
#37A

Replacement parts diagram

Chamber assembly

Part #Y7064

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

Plug-2 Prong K8188
#29

Replacement parts diagram

Plug-2 prong

Part #K8188

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

Air Skirt T7660
#3B

Replacement parts diagram

Air skirt

Part #T7660

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

Model No. 155.81 K8638
#24B

Replacement parts diagram

Model no. 155.81

Part #K8638

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

Air Skirt T7659
#14

Replacement parts diagram

Air skirt

Part #T7659

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

Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

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.

How to replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

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

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair difficulty
Time required
 45 minutes or less

Articles and videos for gas walk-behind mowers

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 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.…

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.…

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Lawn mower won't start troubleshooting video: spark plug and ignition problems video

Find out how to test and fix problems with the spark plug, stop wire, ignition coil and flywheel.…