Engine Specifications
CAUTION
Operation of this engine is for the application it was intended for. All the components used to build this engine assembly must remain in place for the proper operation of this engine.
We recommend that you use an authorized Briggs & Stratton Service Dealer for all maintenance and service of the engine and engine parts. Use only genuine Briggs & Stratton parts.
Model Series 120000Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.69 in. (68.26 mm) Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.04 in. (52 mm) Displacement . . . . . . . . . . . . . . . . . . . . 11.57 cu. in. (190 cc)
Armature air gap . . . . . 0.010 − 0.014 in. (0.25 − 0.36 mm) Spark plug gap . . . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)
Valve clearance with valve springs installed and piston 1/4 in. (6 mm) past top dead center (check when engine is cold). See Repair Manual P/N 270962.
Intake . . . . . . . . . . . . . . . 0.004 − 0.006 in. (0.10 − 0.15 mm) Exhaust . . . . . . . . . . . . . 0.009 − 0.011 in. (0.23 − 0.28 mm)
Note: For practical operation, the horsepower loading should not exceed 85% of rated horsepower. Engine power will decrease
Model, Type and Code Number
To get replacement parts or technical assistance in the future write you engine Model, Type and Code number along with the date of purchase here. These numbers are located on your engine. For the location, see page 3, Engine Features.
Model SeriesTypeCodeTechnical Information
Power Ratings: The power ratings for an individual engine model are initially developed by starting with SAE (Society of Automotive Engineers) code J1940 (Small Engine Power & Torque Rating Procedure) (Revision
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