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B&S Engine 31R9770121B5CC0001 Item number: 31R9770121B5CC0001
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B&S Engine 31R9770121B5CC0001
Pieces per PU: 1 PU: PIECE
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The 4000EX Series™ is a mid-range motor range. It delivers consistent and reliable performance, resulting in superior performance and ensuring longevity. The use of OHV technology and the AVS® anti-vibration system provide a durable and smooth running engine.

The starting system provides electric starting at any temperature, as reliable as your car. Thanks to Electronic Fuel Management (EFM), starting is possible at temperatures from -28 to 50 °C. ReadyStart® ensures car-like starting at temperatures from 0 to 49°C.
Premium high-capacity air filtration system increases protection against contaminants for longer engine life.
Cast iron cylinder liner provides reduced wear for longer engine life.
Full pressure recirculating lubrication with oil filter keeps engine clean for longer life. Oil is delivered under pressure to critical engine components for maximum lubrication and reduced wear.


Brand

BRIGGS & STRATTON

Cast iron cylinder sleeve

Yes

ccm

500

Crankshaft length in mm

80

Crankshaft Type

cylindrical

Crankshaft-Ø in mm

25,4

Drive Shaft

vertical

Electric Starter

Yes

Fuel pump

Yes

Keyway

keyway lengthwise

Keyway in mm

6,30

Number of Cylinders

1

Thread Crankshaft

7/16-20 UNF