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Furnace

Model # 1751 Official Lennox furnace

Here are the diagrams and repair parts for Official Lennox 1751 furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

SEARCH WITHIN THIS MODEL

ALL PARTS

Showing 10 of 63 parts |

Limit Control 10G5201

Furnace diagram

Limit control

Part #10G5201

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

Pilot Burner 18G9001

Furnace diagram

Pilot burner

Part #18G9001

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

Transformer 78H5501

Furnace diagram

Transformer

Part #78H5501

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

Burner LB-17431CB

Furnace diagram

Burner

Part #LB-17431CB

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

Control 97H0401

Furnace diagram

Control

Part #97H0401

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

Flame Sensor 18G8901

Furnace diagram

Flame sensor

Part #18G8901

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

Blower Fan Wheel LB-29333BB

Furnace diagram

Blower fan wheel

Part #LB-29333BB

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

Transformer P-8-9490

Furnace diagram

Transformer

Part #P-8-9490

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

Motor 97H5701

Furnace diagram

Motor

Part #97H5701

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

Motor 45H3001

Furnace diagram

Motor

Part #45H3001

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

Symptoms for gas leaf blowers

Choose a symptom to see related leaf blower repairs.

Why does a leaf blower vibrate excessively?

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What should I do if my leaf blower engine smokes?

Main causes: mixing too much 2-cycle oil with the gas, dirty air filter, clogged carburetor, engine needs tune up…

What should I do if my leaf blower leaks gas?

Main causes: cracked fuel lines, leaky carburetor seals, damaged fuel tank cap, cracked fuel tank…

Why does my leaf blower run roughly?

Main causes: stale fuel, dirty air filter, bad spark plug, cracked fuel lines, clogged carburetor…

Why won't my leaf blower start?

Main causes: bad gas, clogged air filter, cracked fuel lines, clogged fuel filter, dirty carburetor, bad spark plug, wor…

Repair guides for gas leaf blowers

These step-by-step repair guides will help you safely fix what’s broken on your leaf blower.

How to rebuild a leaf blower carburetor

How to rebuild a leaf blower carburetor

If the leaf blower engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow …

Repair difficulty

Time required

60 minutes or less

How to replace a leaf blower carburetor

How to replace a leaf blower carburetor

The carburetor could be the problem If the leaf blower engine won't start even though there's fuel in the tank. Follow t…

Repair difficulty

Time required

15 minutes or less

How to replace leaf blower fuel lines

How to replace leaf blower fuel lines

Leaf blower fuel lines deteriorate with time and eventually can split or crack. You can remove and replace them yourself…

Repair difficulty

Time required

60 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles to get the most out of your leaf blower.

How to get your furnace ready for winter

How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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