McCulloch
Gas Walk-Behind Mower

Model #400090C McCulloch lawn mower

Here are the diagrams and repair parts for McCulloch 400090C lawn mower, as well as links to manuals and error code tables, if available.


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Showing 10 of 122 parts

GUIDE ROPE

#17

Handlebar assembly/fig. 1 Diagram

Guide rope

Part #219614

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

J BOLT

#18

Handlebar assembly/fig. 1 Diagram

J bolt

Part #219615

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

DECK SUPPORT

#2

Mower assy (push)/fig. 2 Diagram

Deck support

Part #219619

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

Handle Bracket

#29

Mower assy (push)/fig. 2 Diagram

Handle bracket

Part #219636

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

Motor Pulley

#14

Mower assy (self propelled)/fig. 3 Diagram

Motor pulley

Part #219644

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

PULLEY & SCREW

#2

Transmission assy/fig. 4 Diagram

Pulley & screw

Part #219654

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

Shaft

#30

Transmission assy/fig. 4 Diagram

Shaft

Part #219665

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

Bearing

#25

Transmission assy/fig. 4 Diagram

Bearing

Part #219717

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

Nut

#33

Transmission assy/fig. 4 Diagram

Nut

Part #219675

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

Screw

#24

Handlebar assembly/fig. 1 Diagram

Screw

Part #219678

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: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel
Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade
Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent
Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up
Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key
Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, bad ignition coil

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 flywheel key on an OHV engine

The flywheel key couples the flywheel to the engine crankshaft. Replace the flywheel key if it's broken.

Repair difficulty
Time required
 60 minutes or less
April 1, 2013
By Lyle Weischwill
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
April 1, 2013
By Lyle Weischwill
How to replace a lawn mower safety switch

The safety switch stops the engine when you release the lever on the handle. This repair guide explains how to replace it if it's not working correctly.

Repair difficulty
Time required
 30 minutes or less

Articles and videos common to all walk-behind mowers

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

October 1, 2019

Types of walk-behind mower blades video

By Sears PartsDirect staff

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