Model # 86776486 Official Kenmore gas-fired furnace

Here are the diagrams and repair parts for Official Kenmore 86776486 gas-fired furnace, 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

ALL PARTS

Showing 10 of 125 parts |

Furnace assemblies - all models diagram

Transformer

Part #86852

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

Burner & manifold assembly diagram

Thermo coupl

Part #503393

Replaced by #H06E-36

This item is not returnable

$14.52 |

12% OFF Phone Price : $16.52

In Stock

Qty

#1B

Burner & manifold assembly diagram

Valve

Part #86858

Replaced by #36C03-333

$277.97 |

$12.00 OFF Phone Price : $289.97

In Stock

Qty

#19B

Blower diagram

Fan wheel

Part #72978

Replaced by #600587

$130.20 |

8% OFF Phone Price : $142.20

In Stock

Qty

#18

Furnace assemblies - all models diagram

F/l cont

Part #87056

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

Twist-on wire connector

Part #21321

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

#NI

All parts diagram

Thermostat

Part #9235

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

#7B

Burner & manifold assembly diagram

Lp gas orifice

Part #503216

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

#10C

Burner & manifold assembly diagram

Pilot burner

Part #503209

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

#1A

Burner & manifold assembly diagram

Valve

Part #85499

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

View all

Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Repair guides for treadmills

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

View all

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Repair difficulty

Time required

15 minutes or less

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Repair difficulty

Time required

15 minutes or less

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Repair difficulty

Time required

30 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles and videos to get the most out of your treadmill.

View all

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

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

Top questions about Sears and Sears PartsDirect

Model # 86776486 Official Kenmore gas-fired furnace

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for treadmills

Why does my treadmill's walking belt slow down?

Why is my treadmill's walking belt slipping?

Why is my treadmill's walking belt off center?

Why won't my treadmill start even though the console display works?

Why is my treadmill's heart rate sensor not accurate?

Why does my treadmill have no display?

Why won't my treadmill power up?

Repair guides for treadmills

How to replace a treadmill motor controller

How to replace a treadmill drive motor

How to replace a treadmill walking board

Effective articles & videos to help repair your furnaces

How to get your furnace ready for winter

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

Top questions about Sears and Sears PartsDirect

Parts & More

Stay Connected

Quick links

Let us help you

More resources