Onan
Lawn & Garden Engine

Model # 6CCK-331M/1887E Official Onan gas engine & generator

Here are the diagrams and repair parts for Official Onan 6CCK-331M-1887E gas engine & generator, 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 321 parts  |

Tube, Breather - Less Valve - Includes Baffle (a) 123A521
#13

Cylinder block, oil base & gear cover group diagram

Tube, breather - less valve - includes baffle (a)

Part #123A521

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

Shaft And Arm Assembly. Governor (b, C) 150B623
#3

Cylinder block, oil base & gear cover group diagram

Shaft and arm assembly. governor (b, c)

Part #150B623

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

Screw, Throttle Stop Clamp 813-102
#32

Carburetor parts group diagram

Screw, throttle stop clamp

Part #813-102

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

Needle Assembly - Includes Packing, Nut And Retainer 142-42
#29

Carburetor parts group diagram

Needle assembly - includes packing, nut and retainer

Part #142-42

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

Bowl, Fuel Filter 149-150
#20

Fuel system & exhaust group diagram

Bowl, fuel filter

Part #149-150

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

Cleaner, Air (b, C) 140A283
#7

Fuel system & exhaust group diagram

Cleaner, air (b, c)

Part #140A283

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

Carburetor, Gasoline 142A363
Carburetor, gasoline

Part #142A363

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

Inlet, Carburetor Air (d) 145A94
#31

Fuel system & exhaust group diagram

Inlet, carburetor air (d)

Part #145A94

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

Screw, Fillister Head - 1/4-20 X 5/8" - Breaker Box (a, 815-111

#NI

All parts diagram

Screw, fillister head - 1/4-20 x 5/8" - breaker box (a,

Part #815-111

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

Shaft, Float (contained In Repair Kit #142k371 And #142k387.) 142-39
#6

Carburetor parts group diagram

Shaft, float (contained in repair kit #142k371 and #142k387.)

Part #142-39

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

Symptoms for electric cooktops

Main causes: broken surface element, surface element switch failure, control system problem, surface element limiter swi…

Repair guides for electric cooktops

How to replace a coil surface element on an electric cooktop

How to replace a coil surface element on an electric cooktop

Easily replace a coil surface element in 15 minutes or less by following these step-by-step instructions.…

Repair difficulty
Time required
 15 minutes or less
How to replace a radiant element on an electric cooktop

How to replace a radiant element on an electric cooktop

Follow these step-by-step instructions to replace a damaged radiant element on your electric cooktop when the element wo…

Repair difficulty
Time required
 45 minutes or less
How to replace the glass top on an electric cooktop

How to replace the glass top on an electric cooktop

Don't use a cracked or damage glass cooktop—replace it, using these instructions to guide you.…

Repair difficulty
Time required
 30 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.…