McCulloch
Lawn & Garden Engine

Model # MC40 Official McCulloch gas kart engine

Here are the diagrams and repair parts for Official McCulloch MC40 gas kart engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 152 parts  |

Lever - Inlet Control 55688
#25

Carburetor assembly diagram

Lever - inlet control

Part #55688

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

Valve - Reed 47771
#43

Engine assembly diagram

Valve - reed

Part #47771

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

Washer 110106
#26

Engine assembly diagram

Washer

Part #110106

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

Screw - Hex Hd 10-24 X 5/8 In. Lg 102388
#47

Engine assembly diagram

Screw - hex hd 10-24 x 5/8 in. lg

Part #102388

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

Diaphragm - Fuel Pump 57274A
#5

Carburetor assembly diagram

Diaphragm - fuel pump

Part #57274A

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

Ring Set - Piston 0.010 In. Oversize 47768

#NI

All parts diagram

Ring set - piston 0.010 in. oversize

Part #47768

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

Seal - Breaker Box Drain 50664
#33

Powerhead assembly diagram

Seal - breaker box drain

Part #50664

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

Washer - Special 101270
#15

Powerhead assembly diagram

Washer - special

Part #101270

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

Arm - Throttle Shaft 50701A
#14

Carburetor assembly diagram

Arm - throttle shaft

Part #50701A

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

Ring Set - Piston Standard Size 47767
#23

Powerhead assembly diagram

Ring set - piston standard size

Part #47767

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

Repair guides for front-engine lawn tractors

How to replace a ground drive belt on a riding lawn mower

How to replace a ground drive belt on a riding lawn mower

Replace the ground drive belt if it's broken or too worn to spin the transaxle pulley.…

Repair difficulty
Time required
 45 minutes or less
How to replace a blade clutch cable on a riding lawn mower

How to replace a blade clutch cable on a riding lawn mower

If the blades don't spin on your riding mower when you shift the lever, the blade clutch cable could be broken. Here’s h…

Repair difficulty
Time required
 30 minutes or less
How to replace a riding lawn mower blade drive belt

How to replace a riding lawn mower blade drive belt

Replace the blade drive belt if it's broken or won't spin the cutting blades because of wear.…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your lawn & garden engines

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.…

What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…