Briggs & Stratton WP20 User Manual

18 BRIGGSandSTRATTON.COM
Power Ratings:ThegrosspowerratingforindividualgasenginemodelsislabeledinaccordancewithSAE(SocietyofAutomotiveEngineers)codeJ1940
(SmallEnginePower&TorqueRatingProcedure),andratingperformancehasbeenobtainedandcorrectedinaccordancewithSAEJ1995(Revision
2002-05). Torque values are derived at 3060 RPM; horsepower values are derived at 3600 RPM. The gross power curves can be viewed at www.
BRIGGSandSTRATTON.COM. Net power values are taken with exhaust and air cleaner installed whereas gross power values are collected without these
attachments. Actual gross engine power will be higher than net engine power and is affected by, among other things, ambient operating conditions and
engine-to-engine variability. Given the wide array of products on which engines are placed, the gas engine may not develop the rated gross power when used
in a given piece of power equipment. This difference is due to a variety of factors including, but not limited to, the variety of engine components (air cleaner,
exhaust, charging, cooling, carburetor, fuel pump, etc.), application limitations, ambient operating conditions (temperature, humidity, altitude), and engine-to-
engine variability. Due to manufacturing and capacity limitations, Briggs & Stratton may substitute an engine of higher rated power for this Series engine.
Tested in accordance with CPB standards for self-priming centrifugal pumps with clear water at sea level.
Product Specifications
Model WP20, WP2-35
Water Pump Specifications
Suction Port Diameter ...................... 5 cm (2 in)
Discharge Port Diameter .................... 5 cm (2 in)
Total Head...............................33 m (108 ft)
Maximum Head
Suction Lift.................................8 m (26 ft)
Discharge Lift .............................25 m (82 ft)
Maximum Discharge Capacity...435 l/min (115 US gal/min)
Shipping Weight ..........................17 kg (38 lb)
Engine Specifications
Displacement ........................127 cc (7.74 in3)
Bore ................................62 mm (2.441 in)
Stroke ..............................42 mm (1.654 in)
Oil Capacity....................0.54-0.59l(18-20oz)
Tune-up Specifications *
Spark Plug Gap..................... 0.76 mm (0.030 in)
Spark Plug Torque ....................20 Nm (180 lb-in)
Armature Air Gap ........0.15 - 0.25 mm (0.006 - 0.010 in)
Intake Valve Clearance ...0.13 - 0.18 mm (0.005 - 0.007 in)
Exhaust Valve Clearance..0.13 - 0.18 mm (0.005 - 0.007 in)
* Enginepowerwilldecrease3.5%foreach300meters(1,000ft)
abovesealeveland1%foreach5.6°C10°F)above25°C
(77° F). The engine will operate satisfactorily at an angle up to 15°.
Common Service Parts **
Oval Air Filter.................................797258
Fuel Additive .............................5041, 5058
Resistor Spark Plug ...........................797235
Spark Plug Wrench .......................89838,5023
Spark Tester ..................................19368
** We recommend that you see any Briggs & Stratton Authorized
Dealer for all maintenance and service of the water pump. Use
only genuine Briggs & Stratton parts.
Water Pump
Product Specifications
Model WP30
Water Pump Specifications
Suction Port Diameter .....................7.5 cm (3 in)
Discharge Port Diameter ...................7.5 cm (3 in)
Total Head...............................33 m (108 ft)
Maximum Head
Suction Lift.................................8 m (26 ft)
Discharge Lift .............................25 m (82 ft)
Maximum Discharge Capacity...900l/min(238USgal/min)
Shipping Weight ..........................29kg(64lb)
Engine Specifications
Displacement ........................163cc(9.95in3)
Bore ................................68 mm (2.667 in)
Stroke ...............................45 mm (1.77 in)
Oil Capacity.....................0.54-0.59l(18-20oz)
Tune-up Specifications *
Spark Plug Gap..................... 0.76 mm (0.030 in)
Spark Plug Torque ....................20 Nm (180 lb-in)
Armature Air Gap ........0.25 - 0.35 mm (0.010 - 0.014 in)
Intake Valve Clearance ...0.10 - 0.15 mm (0.004 - 0.006 in)
Exhaust Valve Clearance..0.15 - 0.20 mm (0.006 - 0.008 in)
* Enginepowerwilldecrease3.5%foreach300meters(1,000ft)
abovesealeveland1%foreach5.6°C10°F)above25°C
(77° F). The engine will operate satisfactorily at an angle up to 15°.
Common Service Parts **
Oval Air Filter.........................797258/590601
Fuel Additive ..............................5041, 5058
Resistor Spark Plug ...........................491055
Spark Plug Wrench ...........................816206
Spark Tester ..................................19368
** We recommend that you see any Briggs & Stratton Authorized
Dealer for all maintenance and service of the water pump. Use
only genuine Briggs & Stratton parts.

Briggs & Stratton WP20 Specifications

General

Brand	Briggs & Stratton
Model	WP20
Category	Water Pump
Language	English