Tecumseh
Lawn & Garden Engine

Model # TYPE 670-85A Official Tecumseh 2-cycle engine

Here are the diagrams and repair parts for Official Tecumseh TYPE-670-85A 2-cycle 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 122 parts  |

Spark Plug 34251
#16A

Basic engine diagram

Spark plug

Part #34251

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

O-ring 631028
#7

Carburetor no. 631936 diagram

O-ring

Part #631028

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

Needl/seat 631021
#2

Carburetor no. 631936 diagram

Needl/seat

Part #631021

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

Fuel Line 29774
#68

Basic engine diagram

Fuel line

Part #29774

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

Float 632019
#5

Carburetor no. 631936 diagram

Float

Part #632019

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

/fuel Clamp 26460
#53

Basic engine diagram

/fuel clamp

Part #26460

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

Clip 631022
#3

Carburetor no. 631936 diagram

Clip

Part #631022

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

Plug 631027
#1

Carburetor no. 631936 diagram

Plug

Part #631027

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

Seal 510105
#29

Basic engine diagram

Seal

Part #510105

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

Spring Retainer 510109A
#31

Basic engine diagram

Spring retainer

Part #510109A

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

Symptoms for gas ranges

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Repair difficulty
Time required
 60 minutes or less
How to replace a range spark igniter electrode

How to replace a range spark igniter electrode

Learn how to replace the spark igniter electrode for the surface burners on a gas range or dual-fuel range.…

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.…