Gas Walk-Behind Mower

Model # 7800369 (M2255HFC) Official Murray lawn mower

Here are the diagrams and repair parts for Official Murray 7800369 (M2255HFC) lawn mower, as well as links to manuals and error code tables, if available.

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7800369 (M2255HFC) Walk-Behind Mowers
Hln-1/4c-bz 7076978SM
Hln-1/4c-bz

Part #7076978SM

Replaced by #703232

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This part replaces 7076978SM. Substitute parts can look different from the original.
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$6.44
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Pushnut-1/4 7091020YP
Pushnut-1/4

Part #7091020YP

Replaced by #704005

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This part replaces 7091020YP. Substitute parts can look different from the original.
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$7.29
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Lawn & Garden Equipment Bolt 340720MA
#19

Deck - push, m22550fc diagram

Lawn & garden equipment bolt

Part #340720MA

Replaced by #5025145X6SM

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Manufacturer substitution
This part replaces 340720MA. Substitute parts can look different from the original.
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Hcln 3/8c Gr 7091585SM
Hcln 3/8c gr

Part #7091585SM

Replaced by #703347

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Manufacturer substitution
This part replaces 7091585SM. Substitute parts can look different from the original.
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In Stock
Nut 3/8-16 B 7900053MA
Nut 3/8-16 b

Part #7900053MA

Replaced by #703333

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Manufacturer substitution
This part replaces 7900053MA. Substitute parts can look different from the original.
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$8.09
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Blade  22  W 7100851YP
#9

Engine/blade/front cover diagram

Blade 22 w

Part #7100851YP

Replaced by #7100851AYP

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Manufacturer substitution
This part replaces 7100851YP. Substitute parts can look different from the original.
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$21.24
22% OFF Phone Price : $27.24
In Stock
Hubcap 7101392YP
Hubcap

Part #7101392YP

This item is not returnable
In Stock
Walk-behind Lawn Mower Engine Decal 7102272YP
#14

Decals diagram

Walk-behind lawn mower engine decal

Part #7102272YP

In Stock
Walk-behind Lawn Mower Engine Decal 7101929YP
#11

Decals diagram

Walk-behind lawn mower engine decal

Part #7101929YP

In Stock
Upper Handle 7300705AMA
Upper handle

Part #7300705AMA

In Stock

Symptoms for gas walk-behind mowers

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

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

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

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

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

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

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

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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

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

Repair difficulty
Time required
 60 minutes or less
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.…

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your walk-behind mowers

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

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.…

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.…

Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…