Briggs & Stratton Ring Gears
Our Briggs & Stratton ring gears ensure reliable electric starter engagement for lawn mowers and small engines. Flywheel ring gears mount to the flywheel perimeter and mesh with the starter motor drive gear to crank the engine. We stock genuine engine ring gear assemblies in steel, aluminium, and reinforced nylon materials for all Briggs & Stratton models. Small engine ring gears feature precision-machined teeth for optimal starter motor alignment and reduced wear. Lawn mower ring gear kits include replacement gears and mounting hardware for professional installation. Briggs & Stratton ring gears attach via rivets or bolts depending on flywheel design. We hold worldwide stock and sell globally with rapid despatch.
Available Briggs & Stratton Ring Gears
Gasket Dr Gear Cov
691868
Briggs & Stratton
£2.80
In Stock
Starter Pinion Gear
593935
Briggs & Stratton
£25.30
In Stock
Gear Timing
797521
Briggs & Stratton
£5.50
In Stock
Rack Gov Gear
690583
Briggs & Stratton
£5.65
In Stock
Pinion Gear
795096
Briggs & Stratton
£6.30
In Stock
Gear Ring
696537
Briggs & Stratton
£56.90
In Stock
Starter Pinion Gear
695708
Briggs & Stratton
£7.90
In Stock
Gear Governor
793338
Briggs & Stratton
£34.55
In Stock
Starter Pinion Gear
280875
Briggs & Stratton
£35.10
In Stock
Gear Ring
499612
Briggs & Stratton
£79.95
In Stock
Starter Gear
496881
Briggs & Stratton
£73.30
Available
Gear Timing
697128
Briggs & Stratton
£15.90
Available
Frequently Asked Questions
Why won't my engine start after replacing the ring gear and flywheel?
Post-replacement starting failures typically indicate sheared flywheel keys from insufficient torque or timing issues. The flywheel key maintains ignition timing—if not properly torqued (typically 55-100 ft-lbs depending on model), the flywheel slips during starting, shearing the key. Backfiring through the carburettor confirms timing problems. Always use a torque wrench when reinstalling flywheels. Ensure the flywheel seats completely onto the crankshaft taper before tightening. Verify the key sits properly in both crankshaft and flywheel keyways. If the engine cranks but won't fire, remove the flywheel and inspect for key damage.
What are warning signs that my ring gear needs replacement soon?
Grinding or clicking noises during engine cranking indicate partial gear engagement from worn teeth. Intermittent starting where the starter spins freely occasionally suggests missing or damaged teeth. Visible inspection reveals worn tooth tips, uneven tooth heights, or missing teeth sections. If you've replaced starter drive gears multiple times, the ring gear is likely the underlying cause. Engines requiring excessive cranking time before starting may have insufficient ring gear engagement. Replace ring gears proactively when changing starters on older engines (10+ years) to prevent repeated failures and potential flywheel damage requiring costlier replacement.
How do I know which ring gear material matches my starter motor drive gear?
Ring gear and starter drive gear materials must match correctly—mismatched materials cause rapid failure. Steel ring gears (identifiable with a magnet) require 14-tooth steel starter drive gears. Aluminium and plastic/nylon ring gears require 16-tooth plastic starter drive gears. The tooth count and spacing differ between types—they're not interchangeable. Using steel drive gears on aluminium or plastic ring gears destroys the ring gear teeth within a few starts. Conversely, plastic drive gears on steel ring gears strip immediately. Check your parts manual or use a magnet to identify ring gear material before ordering replacement parts.
What causes repeated starter drive gear failures even with new gears?
Repeated drive gear stripping indicates worn ring gear teeth, incorrect gear material matching, or starter misalignment. Even if ring gear teeth appear intact, uniform wear from age creates insufficient mesh depth, causing premature failure. Rust on steel ring gears creates rough surfaces that accelerate wear. Aftermarket starters often use inferior materials that fail quickly—always use genuine Briggs & Stratton components. Starter mounting misalignment prevents full gear engagement; ensure the starter bolts tightly with no movement. If replacing multiple gears within 10-20 starts, inspect and likely replace the ring gear simultaneously.
Can I replace just the ring gear without buying a complete flywheel?
Ring gear replacement depends on flywheel design. Some flywheels have riveted ring gears requiring careful drilling with a drill press to remove old rivets—replacement kits include new gears and bolts. Other flywheels have cast-integral ring gears that cannot be separated; these require complete flywheel replacement. Ring gear kits cost £15-35 whilst complete flywheels cost £50-100. However, sourcing used flywheels with good ring gears is often cheaper than new ring gear kits. When replacing ring gears, cover flywheel magnets underneath to prevent metal shavings contamination during drilling operations.