Small Engine Fastener & Torque Specs
OEM-referenced bolt sizes and torque specs for lawn mowers, riding mowers, generators, pressure washers, and other small engines. Find blade bolt torque, spark plug torque, flywheel nut, and engine fastener specs by equipment type and brand.
Common small-engine fasteners
The fasteners that matter most on small engines are the blade bolt or blade spindle nut, the spark plug, the flywheel nut, and the engine mounting bolts. Blade bolts on walk-behind mowers typically torque to 35-50 ft-lbs, riding mower blade bolts to 50-75 ft-lbs, and spark plugs to 10-15 ft-lbs on aluminum heads.
Why correct torque matters
A loose blade bolt is a safety hazard and a common cause of vibration and blade loss, while an over-torqued spark plug strips the soft aluminum head. Always use a calibrated torque wrench and replace any single-use crush washer on the engine oil drain plug.
More small-engine torque specs & guides
- Briggs & Stratton Blade Bolt Torque Specs
- Briggs & Stratton Engine Torque Specs
- Carburetor, Muffler & Blower Housing Torque Specs
- Generator Bolt Torque Specs
- Honda EU2000i Torque Specs
- Honda GCV Series Engine Torque Specs
- Honda GX Series Engine Torque Specs
- Honda Small Engine Spark Plug Torque
- Husqvarna Chainsaw Torque Specs
- Kawasaki Engine Torque Specs
- Kohler Command PRO 999cc Torque Specs
- Kohler Engine Torque Specs
- Kohler K-Series & Magnum Engine Torque Specs
- Kohler XT Engine Torque Specs
- Onan Engine Torque Specs
- Predator (Harbor Freight) Engine Torque Specs
- Pressure Washer Bolt Torque Specs
- Snow Blower Shear Pin Sizes & OEM Part Numbers by Brand
- Tecumseh Engine Torque Specs
Mower blade torque by brand
Each brand page lists its models with the blade bolt torque for each.
- Ariens Mower Blade Bolt Torque Specs
- Bad Boy Mower Blade Bolt Torque Specs
- Bobcat Mower Blade Bolt Torque Specs
- Country Clipper Mower Blade Bolt Torque Specs
- Craftsman Mower Blade Bolt Torque Specs
- Cub Cadet Mower Blade Bolt Torque Specs
- eXmark Mower Blade Bolt Torque Specs
- Ferris Mower Blade Bolt Torque Specs
- Gravely Mower Blade Bolt Torque Specs
- Honda Mower Blade Bolt Torque Specs
- Husqvarna Mower Blade Bolt Torque Specs
- Hustler Mower Blade Bolt Torque Specs
- John Deere Mower Blade Bolt Torque Specs
- Kubota Mower Blade Bolt Torque Specs
- MTD Mower Blade Bolt Torque Specs
- Scag Mower Blade Bolt Torque Specs
- Snapper Mower Blade Bolt Torque Specs
- Spartan Mower Blade Bolt Torque Specs
- Toro Mower Blade Bolt Torque Specs
- Troy-Bilt Mower Blade Bolt Torque Specs
- Wright Mower Blade Bolt Torque Specs
Related lookups
- Walk-Behind Mower Specs
- Riding Mower Blade Bolt Torque
- Zero-Turn Mower Specs
- Generator Specs
- Pressure Washer Specs
- Handheld 2-Stroke Specs
- Stihl Engine Torque Specs
- Echo Engine Torque Specs
- Carburetor Adjustment Tool Finder
- Snow Blower Specs
- Chainsaw Specs
- String Trimmer Specs
- Go-Kart Specs
- Lawn Mower Bolt Torque
- Mower Deck Spindle Bolt Torque Chart
- Can-Am Defender & Traxter Torque Specs
- E-Z-GO Golf Cart Torque Specs
- Zero-Turn Mower Wheel Lug Torque Chart
- LCT Engine Torque Specs
- Bolt Size Chart
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