Briggs & Stratton Governor Gears & Levers
Briggs & Stratton governor gears and levers regulate engine speed automatically, maintaining consistent RPM regardless of load conditions. The small engine governor system uses centrifugal flyweights on the governor gear that spin with the camshaft, creating force that moves the governor arm and throttle linkage. The engine governor lever connects external throttle controls to the governor shaft, working against spring tension to balance speed control. When under load climbing hills or cutting thick grass, the lawn mower engine governor opens the throttle to maintain power. We hold Briggs & Stratton governor gears and levers in stock and sell worldwide.
Available Briggs & Stratton Governor Gears & Levers
Spring Governor
793342
Briggs & Stratton
£6.50
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Spring Governor
691290
Briggs & Stratton
£6.10
In Stock
Spring Governor Link
260029
Briggs & Stratton
£8.00
In Stock
Spring Governor
692906
Briggs & Stratton
£6.85
In Stock
Spring Governor
796261
Briggs & Stratton
£6.10
In Stock
Spring Governor
691851
Briggs & Stratton
£6.80
In Stock
Spring Governor
691292
Briggs & Stratton
£6.75
In Stock
Governor Spring
691852
Briggs & Stratton
£6.60
In Stock
Spring Governor
692612
Briggs & Stratton
£6.75
In Stock
Spring Governor
690251
Briggs & Stratton
£6.20
In Stock
Spring Governor Link
691842
Briggs & Stratton
£7.90
In Stock
Spring Governor
690563
Briggs & Stratton
£7.35
In Stock
Frequently Asked Questions
Can you replace a governor gear without removing the engine?
Yes, on most vertical shaft engines you can replace the governor gear with the engine still mounted. Drain the oil completely and remove any PTO pulleys from the crankshaft. Remove the crankcase cover (sump) from the bottom—typically 9-10 bolts. With the engine tipped back on the equipment frame, the governor gear is visible and accessible. Replace the governor gear, crankshaft seal, and gasket while the sump is off. Use a magnet to remove all broken governor gear pieces before installation. Torque sump bolts to 100 inch-pounds in a crisscross pattern.
Why does my engine surge or hunt even after adjusting the governor?
Surging is usually caused by carburetor issues, not the governor—a lean fuel mixture causes hunting. Clean the carburetor thoroughly, especially idle and main jets. Verify the governor spring hasn't stretched, broken, or become detached. Check that all linkages move freely without binding or sticking. Ensure the governor arm isn't bent and the throttle shaft isn't worn. Air leaks at the intake manifold, carburetor mounting, or throttle shaft seals cause uncontrolled speed increases. Only internal governor gear failure prevents proper speed regulation—external adjustments won't fix a broken internal gear.
What causes repeated governor gear failure?
Over-revving the engine during improper governor adjustment breaks plastic gear teeth. Setting maximum governed speed too high stresses the governor mechanism beyond design limits. Operating with stretched or incorrect governor springs allows excessive RPM. Running the engine without proper oil level accelerates wear on the governor gear and shaft. V-twin engines have higher failure rates due to increased loads and vibration. If replacing the same governor gear multiple times, verify proper spring tension, linkage setup, and maximum RPM settings rather than assuming repeated part failure.
What are the symptoms of a failed governor gear?
The engine races to maximum RPM immediately on startup and won't respond to throttle control adjustments. Under load the engine bogs down severely or stalls because the governor cannot open the throttle to compensate. You may hear rattling or grinding noises from inside the crankcase if plastic governor gear teeth have broken apart. V-twin Briggs engines are particularly susceptible to governor gear failure. The engine runs fine at no load but dies when attempting to cut grass or climb hills, indicating the governor cannot advance throttle position.
How do you properly adjust the governor on a Briggs & Stratton engine?
Loosen the governor arm clamp bolt where it attaches to the governor shaft. Move the throttle plate on the carburetor to wide open position manually. Rotate the governor shaft in the same direction the governor arm moved to reach wide open throttle—typically clockwise when viewed from the front. Hold both in position and tighten the clamp bolt securely. This is a 10-second adjustment that resets governor linkage properly. If adjustment doesn't fix running issues, the internal governor gear has likely failed and requires crankcase disassembly.