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LAWN MOWER & PRESSURE WASHER ENGINE • AUDITED OPERATIONAL SPEC
Briggs & Stratton Quantum 4-Stroke Float Carburetor
⚡ FIELD SPECIFICATION SUMMARY
Reliable bowl-feed carburetor found on tens of millions of lawn mowers, vulnerable to clogged pilot jets after winter storage.
Audited Engineering & Performance Metrics
HIGH NEEDLEFixed Brass Main Jet (Clean with wire)
LOW NEEDLEFixed Idle Air Bleed Circuit
IDLE RPM3,100 RPM Governed Top Speed
POPOFF PSIFloat Needle Gravity / Low Pressure
METERING LEVERFloat Parallel to Body when Inverted
Specialist Advisory: Brad Stevens (Certified Small Engine Mechanic)
Surging (engine revving up and down uncontrollably) is caused 99% of the time by a gummed-up pilot jet. Clean with torch tip cleaner.