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Not for Reproduction BRIGGS & STRATTON CORPORATION ADVANCE PRODUCT SERVICE INFORMATION APSI NO: 73 DATE: 02/11/2011 SUBJECT: PROFESSIONAL SERIES™ ENGINE MODELS: 950 Series (Model 140000) Briggs & Stratton recently introduced the 950 Series OHV vertical shaft engine in the single-cylinder Professional Series product line. Some of the features of this engine include: • Electric ReadyStart® starting system • Commercial quality oval air cleaner element with dual seals allows for increased maintenance intervals • 2 year consumer / 90 day commercial limited warranty This APSI provides basic servicing information in advance of the repair manual currently in development. See the Illustrated Parts List for service part numbers. The following specifi cations, part numbers, and/or procedures are PRELIMINARY and subject to change. Reproduction For Not © Briggs & Stratton Corporation Page 1 of 6 Dimensions BRIGGS & STRATTON CORPORATION 6.204Ŋ 7.142Ŋ (157.58) (181.4) 5.874Ŋ (149.2) 15.806Ŋ (401.47) 9.926Ŋ (252.13) 2.41Ŋ 3.68Ŋ (61.0) (94.0) 13.346Ŋ (338.98) 3.20Ŋ (81.0) 1.56Ŋ 3.02Ŋ (40.0) (77.0) 9.866Ŋ (250.6) 1.94Ŋ (49.0) Reproduction 6.9Ŋ 2.06Ŋ (175.16) (52.0) 2.62Ŋ CLEARANCE HOLE For (267.0) FOR SUMP Not Page 2 of 6 Torque Patterns 1 4 1 4 3 2 2 3 Figure 1 Figure 2 On engines built between date codes 101206xx and 110201xx, a penetrating oil should be applied to the ex- posed threads before backing out the cylinder head screws (Fig 1). Reproduction For Not Loc-patch screw 4 6 2 1 7 5 3 Figure 3 Page 3 of 6 Common Specifications SAE Metric Armature Air Gap .010 - .014 in .25 - .36 mm Bore and Stroke 2.913 x 2.040 in 73.99 x 51.82 mm Crankshaft End Play .002 - .038 in .05 - .97 mm Displacement 13.60 ci 223 cc Exhaust Valve Clearance .004.- .008 in .10 - .20 mm Intake Valve Clearance .004 - .008 in .10 - .20 mm Fuel Tank Capacity .3 gal 1.13 L Oil Capacity 18 - 20 oz .54 - .59 L Spark Plug Gap .020 in .51 mm Spark Plug Torque 180 lb-in 20 Nm Common Service Parts Service Number Air Cleaner Gasket 691894 Air Filter Element 795066 Air Filter Pre-Cleaner 796254 Armature 796499 Carburetor 799479 Carburetor Overhaul Kit 796612 Crankcase Cover Gasket 692232 Cylinder Head Gasket 799496 Electric Starter Reproduction799241 Fuel Cap 692046 Gasket Set 799496 Spark Plug For 692720 Spark Plug Wrench 19576 Valve GasketNot Set 799496 Page 4 of 6 Fastener Torque Specs SAE Metric Notes Air Cleaner Base to 40 lb-in 4.5 Nm - Carburetor Air Cleaner Cover Knob 10 lb-in 1.1 Nm - Alternator 40 lb-in/85 lb-in 4.5 Nm/9.6 Nm Uses 1 screw and 1 stud Armature 85 lb-in 9.6 Nm - Breather Cover 55 lb-in 6.2 Nm - Breather Reed 45 lb-in 5.1 Nm - Carburetor 85 lb-in 9.6 Nm - Casing Clamp 15 lb-in 2 Nm - Connecting Rod 95 lb-in 11 Nm Torque long bolt fi rst Crankcase Cover 110 lb-in 12.4 Nm See Figure 3 for torque sequence Cylinder Head 210 lb-in 23.7 Nm See Figure 1 for torque sequence Electric Starter to Cylinder 85 lb-in 9.6 Nm - Flywheel Guard 65 lb-in 4.5 Nm - Flywheel Nut 60 lb-ft 6.8 Nm - Fuel Tank to Cylinder 85 lb-in 9.6 Nm - Governor Lever Nut 30 lb-in 3.4 Nm - Muffler Bolts 85 lb-in 9.6 Nm - Muffler Guard 25 lb-in 2.3 Nm - Oil Drain Plug 145 lb-in 16.4 Nm - Rewind Nuts 30 lb-in 3.4 Nm - Rocker Arm Studs 50 lb-in 5.6 Nm - Rocker Ball Set Screws 40 lb-in 4.5 Nm - Spark Plug 180 lb-in 20 Nm - Valve Cover 40 lb-in Reproduction4.5 Nm See Figure 2 for torque sequence For Not Page 5 of 6 Reject Dimensions Standard Dims. Reject Dims. SAE Metric SAE Metric Cylinder Mag Bearing .876 in 22.25 mm .878 in 22.30 mm Mag Oil Seal Depth Flush Flush N/A N/A Bore out-of round N/A N/A .0015 in (.04 mm) Cam Bearing .501 in 12.73 mm .502 in 12.75 mm Cylinder Head Intake Valve Seat Angle 46° 46° N/A N/A Valve Stem .247 in 6.29 mm .245 in 6.22 mm Valve Guide .249 in 6.32 mm .251 in 6.38 mm Exhaust Valve Seat Angle 46° 46° N/A N/A Valve Stem .247 in 6.29 mm .245 in 6.22 mm Valve Guide .249 in 6.32 mm .251 in 6.38 mm Crankcase Cover / Sump PTO Bearing 1.065 in 27.05 mm 1.067 in 27.10 mm PTO Oil Seal Depth .200 in .508 mm 5.075 in 128.91 mm Cam Bearing .501 in 12.73 mm .502 in 12.75 mm Crankshaft Crankpin Journal 1.098 in 27.89 mm 1.096 in 27.84 mm Mag Journal .875 in 22.23 mm .873 in 22.17 mm PTO Journal 1.062 in 26.97 mm 1.060 in 26.92 mm Cam Shaft Reproduction Mag-Side Journal .500 in 12.70 mm .499 in 12.67 mm PTO Side Journal .500 in 12.70 mm .499 in 12.67 mm Connecting Rod Crankpin Bearing For1.100 in 27.95 mm 1.101 in 27.97 mm Piston Pin Bearing .491 in 12.47 mm .493 in 12.52 mm Piston Pin DiameterNot .490 in 12.45 mm .489 in 12.42 mm Pin Bore .491 in 12.47 mm .492 in 12.50 mm Piston Rings Ring End Gap - Top .005 - 015 in .13 - .38 mm .025 in .64 mm Ring End Gap - Middle .025 - .035 in .64 - .88 mm .045 in 1.14 mm Ring End Gap - Oil .010 - .030 in .05 - .08 mm .045 in 1.14 mm Ring Land Clearance- Top .002 in .05 mm .005 in .13 mm Ring Land Clearance - .002 in .05 mm .005 in .13 mm Middle Ring Land Clearance - Oil .004 .10 mm .007 in .18 mm Page 6 of 6.
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