Get free shipping on your order, with any water filter subscription. Find my filter

Open Hamburger Menu
Sears Parts Direct
Tips to find your model number
Briggs & Stratton 126T02-0782-B1 engine

Briggs & Stratton 126T02-0782-B1 engine Parts

Here are the diagrams and repair parts for Briggs & Stratton 126T02-0782-B1 engine, as well as links to manuals and error code tables, if available.

By Schematic
By Part
SELECT DIAGRAM
?

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

Browse Parts for 126T02-0782-B1 Engine

Briggs & Stratton Engine 126T02-0782-B1 FAQs

Diagnosis code 782 is commonly used as an ICD-9 medical code for symptoms involving the skin and other integumentary tissue (for example, nonspecific skin symptoms). It is not a Briggs lawn and garden engine diagnostic code for model 126T02-0782-B1.

Why you might be seeing “782” on this engine listing

On Briggs engine model numbers like 126T02-0782-B1, the “0782” portion is a model/type identifier, not a medical diagnosis or an engine fault code. It helps match the correct parts (spark plug, fuel line, carburetor parts) to your exact engine build.

Why it matters

Using the correct engine model and type prevents ordering the wrong Briggs parts and avoids fitment issues during repair.

What to do if you are troubleshooting an engine problem

If your Briggs 126T02-0782-B1 engine is hard to start, runs rough, or stalls, these checks solve most common issues:

  • Replace the spark plug if it is fouled or worn (use the correct part for this engine)
  • Inspect the fuel line for cracks, soft spots, or leaks
  • Drain old fuel and refill with fresh fuel
  • Clean the carburetor bowl and replace the bowl gasket if it seeps
  • Check the recoil starter rope and handle for fraying or slipping

Common parts customers replace first (and what they affect)

Symptom Likely area Example part for this model
No start or misfire Ignition Briggs & stratton lawn and garden spark plug 796112S
Starts then dies Fuel delivery Briggs & stratton lawn & garden equipment engine fuel line, red 791766
Fuel leak at carb bowl Carburetor sealing Briggs & stratton lawn & garden equipment engine carburetor float bowl gasket 796610

Quick tip for ordering the right parts

Match parts to the full model exactly as 126T02-0782-B1 (including the “0782” type). If you are unsure, use our model number help: how to find your appliance model number (and what it means for parts).

Last updated: February 2026

The most common problems we see on the Briggs & Stratton 126T02-0782-B1 lawn and garden engine are no-start or hard-start, rough running or surging, fuel leaks, and pull-start issues. These usually trace back to ignition, fuel delivery, or the recoil starter system.

Common symptoms and what they usually point to

  • Won’t start / starts then dies: fouled spark plug, stale fuel, restricted fuel line, dirty carburetor bowl or float issue
  • Surging at idle or under load: carburetor float/needle sticking, air leak, partially clogged main jet
  • Fuel smell or leaking: cracked fuel line, leaking carburetor bowl gasket, stuck float
  • Pull cord won’t retract or slips: worn recoil spring, damaged rope, worn friction plate
  • Stops when you release the handle (mower applications): stop switch or brake system issue

Quick checks we recommend first (fast, low-cost)

  1. Drain old fuel and refill with fresh fuel.
  2. Inspect the fuel line for cracks, softness, or loose connections; replace if questionable.
  3. Remove and inspect the spark plug; replace if the electrode is worn or the plug is fuel-fouled.
  4. If it surges or leaks fuel, service the carburetor bowl area (gasket, float, needle).
  5. If the pull start is the issue, inspect the rope and recoil components for wear.

Parts that commonly fix these issues

Problem Common fix Example part on this model
No start, misfire Replace spark plug Briggs & stratton lawn and garden spark plug 796112S
Fuel leak, hard start Replace fuel line Briggs & stratton lawn & garden equipment engine fuel line, red 791766
Surging, flooding Carburetor bowl gasket Briggs & stratton lawn & garden equipment engine carburetor float bowl gasket 796610
Flooding, fuel overflow Float or needle valve Briggs & stratton lawn & garden equipment engine carburetor float 398187 and Briggs & stratton lawn & garden equipment engine carburetor needle valve 398188
Pull cord problems Replace rope Briggs & stratton lawn & garden equipment engine recoil starter rope 697316

Why it matters

Catching fuel and ignition issues early prevents repeated no-starts, plug fouling, and carburetor flooding. Fixing recoil starter wear also avoids sudden pull-cord failure when you need the engine to start reliably.

Last updated: March 2026

On a Briggs & Stratton engine like model 126T02-0782-B1, the model number is stamped into the metal on the engine itself (not on the mower deck). We use that exact stamping to match the correct parts list and diagrams for your engine.

Where to look on the engine

Check these common locations first; clean the area so the stamping is readable:

  • Valve cover area (side of the engine near the muffler)
  • Blower housing/shroud (the metal cover around the recoil starter)
  • Above the spark plug area on the cylinder
  • Near the muffler heat shield
  • On the engine block close to where the fuel tank mounts

A flashlight and a rag with a little degreaser usually makes the numbers stand out.

What the stamping should look like

Briggs engines typically show a Model / Type / Code format. For your engine, the model portion will match 126T02-0782-B1.

Field on engine What it means Example format
Model Engine family and configuration 126T02-0782-B1
Type Build variation 6 digits
Code Date code 8 digits

Why it matters for parts

Using the full model stamping helps us avoid mismatches between similar engines that use different ignition, carburetor, or starter components.

  • Spark plug and ignition parts can vary by type code
  • Fuel system parts can differ by tank and carburetor version
  • Recoil starter parts can change by housing style

If you are also replacing a common tune-up item, match it to the parts list for your engine, for example the Briggs & stratton lawn and garden spark plug 796112S.

Quick tip if the stamping is hard to read

  • Wipe off oil and grass buildup
  • Look for faint, dot-matrix style stamping
  • Take a close-up photo and zoom in

Last updated: March 2026

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower front deck tray

How to replace a lawn mower front deck tray

Learn how to replace the front deck tray on your lawn mower if it's cracked or damaged.…

Repair time and Difficulty

 60 minutes or less
How to replace a lawn mower transmission

How to replace a lawn mower transmission

Learn how to replace the transmission on your lawn mower if it's locked up or won't drive the wheels.…

Repair time and Difficulty

 60 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair time and Difficulty

 45 minutes or less

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

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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.…

Parts & More

Air Compressor
Dishwasher
Electric Range
Front-Engine Lawn Tractor
Gas Chainsaw
Gas Walk-Behind Mower
Lawn & Garden Engine
Office Equipment
Parts
Room Air Conditioner
Sewing Machine
Side-By-Side Refrigerator
Vacuum Cleaner
Washer