Frequently Asked Questions

How to Inspect Your Small Engine for Brake Replacement

Brake Service Requirements

In most walk mowers, a well-maintained brake system should stop the engine and any attached cutting equipment within three seconds whenever you step away from the equipment or release the brake bail. If the engine operates for more than three seconds after braking, then the stop switch or brake pad/band may be in need of replacement or adjustment.

Engine WarningWARNING: Always read the engine and equipment manual(s) before starting, operating, or servicing your engine or equipment to avoid personal injury or property damage. See an authorized dealer or contact Briggs & Stratton if you are unsure of any procedure or have additional questions. Find all Engine Safety Warnings

Servicing Engine Brake Pads in Mowers & Outdoor Power Equipment

How to Remove Brake Pads for Inspection

  • Step 1: Remove the spark plug lead and secure it away from the spark plug. Then, remove any other components that block access to the brake, such as the finger guard, fuel tank, oil fill tube, blower housing or rewind starter.
    Removing Oil Fill Tube from EngineRemoving Rewind Starter from Engine
  • Step 2: Remove the brake control bracket cover , if equipped. Then, loosen the cable clamp screw and remove the brake cable from the control lever.
    Removing Brake Control Bracket Cover from Engine
  • Step 3: Disconnect the spring from the brake anchor, using needlenose pliers . Then, remove the stop switch wire by gently squeezing the switch and pulling lightly on the wire until it slips free. If the engine is equipped with an electric starter motor, disconnect the pair of wires leading to the starter motor.
    Needlenose Pliers Removing Brake Anchor Spring
  • Step 4: Remove the brake bracket by loosening the screws.

How to Inspect and Test Brake Pads for Replacement

  • Step 1: Inspect the brake pad for nicks, cuts, debris, and other damages. This can be done without removing the brake. Measure the pad's thickness with a ruler or caliper to check for wear.
    Measuring the Brake Pad's Thickness with Ruler or Caliper
    • NOTE: Measure the pad only, not the bracket. Replace the brake assembly if the pad's thickness is less than .090".
  • Step 2: Test the stop switch using a multitester or ohmmeter, to determine whether the ignition circuit is grounded when the stop switch is activated .
    Testing Stop Switch with Multitester The stop switch should show continuity (0 ohms) to engine ground when the switch is set to STOP, and no continuity (∞), when the switch is set to RUN. If you identify a problem, check for loose or faulty connections.

Once you’ve completed the inspection, replace brake pads as needed. If you continue experiencing problems, reach out to your Briggs & Stratton Dealer for additional repair help!

How to Reassemble the Brake System

  • Step 1: Install the brake assembly on the cylinder. Brake Assembly on Cylinder
    Tighten the mounting bolts to 40 inch. lbs. with a torque wrench.
  • Step 2: Install the stop switch wire by bending the end of the wire 90°
    Installing Stop Swithc Wire on Brake Pads
  • Step 3: Install the blower housing and any other engine parts removed for brake servicing.
  • Step 4: Check the brakes by pivoting the lever. Make sure the lever moves freely and the pad makes full contact with the flywheel.
  • Step 5: Attach the brake spring using needlenose pliers and connect the brake cable
  • Step 6: Test the braking system by starting the engine and then releasing the brake bail. The engine and the blade or other equipment should come to a stop within three seconds.

Servicing Engine Band Brake

How to Remove And Inspect Band Brakes for Replacement

The brake band contains loops at either end, mounted on a stationary and a movable post.

  • Step 1: Use a tang bending tool (service part number 19480) to bend the control lever tang outward so it clears the band brake loop
    Band Brake Tang Bending ToolBending Control Lever with Tang Bending Tool
  • Step 2: Release the brake spring using pliers
    Pliers Releasing Brake Spring
  • Step 3: Lift the brake band off the stationary and movable posts
    Taking the Brake Band Off for Inspection
  • Step 4: Inspect and replace the band if you find nicks or cuts.
  • Step 5: Check for wear by measuring the band’s thickness with a ruler or caliper
    Measuring Brake Band Thickness with Caliper
    • NOTE: Measure the brake pad only, not the metal band. Replace the brake band if the pad's thickness is less than .030"

How to Test Band Brakes

Test the band brake's stopping power with the spark plug lead secured away from the spark plug. On electric start engines, disconnect and remove the battery.

  • Step 1: With the brake engaged, turn the starter clutch, using a starter clutch adapter and torque wrench .
    Turning Starter Clutch with Adapter and Torque WrenchIf the torque reading is lower than 45 inch lbs. while turning the flywheel clockwise at a steady rate, the engine components may be worn, damaged or in need of adjustment.
  • Step 2: Test the stop switch with a multitester or ohmmeter to determine whether the ignition circuit is grounded when the stop switch is activated. The stop switch should show continuity (0 ohms) to engine ground when the switch is set to STOP, and no continuity (∞) when the switch is set to RUN. If you discover a problem, check for loose or faulty connections.

Find replacement parts or contact a Briggs & Stratton dealer for brake adjustment or addressing connection issues. Check out our FAQ on ignition system problems for additional maintenance and repair help.

How to Assemble Band Brakes After Inspection

  • Step 1: Reinstall the stop switch wire on the control bracket. On older systems, reinstall the stop switch wire on the control bracket stop switch terminal.
  • Step 2: Place the band brake on the stationary post and hook it over the end of the movable post until the band bottoms out.
    • NOTE: The brake material on a steel band must be on the flywheel side after assembly. On older systems, install the band brake on the stationary and movable posts.
  • Step 3: Bend the retainer tang until it is positioned over the band brake loop so that the loop cannot be accidentally dislodged. After assembly, check that the braking material on the metal band faces the flywheel.

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User Community

Hizzoner • 14 days ago

Can I use a FRAM TG6607 oil filter on my exmark mower with a 22hp Briggs motor?

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