Engine Numbers & What They Mean Contrary to popular belief, the emissions family and numbers do not assist in looking up details about an engine. So, where are the engine numbers? There is a pdf file under Day 1 titled BA_modeltypecode.pdf that describes how to find the MTC. It is the same file as listed under the FAQ at www.briggsandstratton.com Supply some printed handouts if you wish. The PDF will be supplied on the PowerPortal and the main website.

Engine Identification Model Type Code 126312 0023 E1 040922 FD Color, Decals, Speed, & OEM Year Cubic Inch Displacement Month a)     Model Number i)        Cubic Inch Displacement ii)      Crankshaft Orientation iii)    Type Of Bearings And Lubrication System iv)    Type Of Starter b)     Type Number (1)  Made To An OEM Specifications c)      Code Numbers (1)  Year (2)  Month (3)  Day Plant Type of Starter Emissions Day Basic Design Series Assembly Line and Manufacturing Plant PTO Bearing, Reduction Gear, Auxiliary Drive, Lubrication Crankshaft Orientation Tab 2 – CE 3017 Slides – Pg 9/8

Engine Numbers & What They Mean Model Number 1st digit(s) = Cubic Inch Displacement 2nd digit (Letter) = Basic Design Series 3rd digit (Letter)= Crankshaft Orientation 4th digit = Type of Bearings, Gear Reduction, Auxiliary Drive, Lubrication 5th digit (Letter) = Type of Starter Open MS5568/10/10 Sales Engine Service Catalog or instruct students to bring it up on line to page 8 and use the catalog to support the next few slides. Specifications book, pg 12

Engine Numbers & What They Mean 135232 13 - 13 Cubic Inch 5 - Basic Design Series 2 - Horizontal Crankshaft 3 - Ball Bearing(which end?) (Lubrication?) 2 - Rewind Starter Use this opportunity to explain what certain engine features are Basic design series Flange mount Ball bearing PTO Splash lube Rewind starter Support this section with samples of engine features.

Engine Numbers & What They Mean 28Q777 28 - 28 Cubic Inch Q - Basic Design Series (Letter) 7 - Vertical Crankshaft 7 – Plain Bearing, Pressure Lubrication 7 - 12 Volt Gear Drive Starter Use this opportunity to explain what certain engine features are Plain bearing Pressure lubrication 12 volt gear drive starter Make up other examples from page 8, MS5568 to offer a look at other features engines may be fitted with.

Engine Numbers & What They Mean Type / Trim Number Provides Very Specific Information Determines Parts by Application / OEM Top No Load RPMs / EPA Use MS-5568 While the model number narrows down engine features, the type number makes it an individual. Picture the model number as the name of a certain street in a city. The type number establishes a specific address on that street. This is necessary in order to be able to zero in on certain engine characteristics that make it unique to an OEM. One engine may be identical to another except for the muffler. Each will have a different type number in order to be able to identify the different muffler for one of the engines. There are some consistencies for type numbers but then there are also inconsistencies. For example, all small walk behind mower engines such as Classic, Sprints, Quantums, DOV and Professional Series with a type number that ends in 15 have 7/8 in diameter crankshafts, 3 and 5/32 long. It doesn’t matter if the type is 0015, 1015 or 2015. All horizontal shaft engines with 49 at the end of the type number such as 0049, 1049, 2049 are gear reduction engines. Engines with 25 such as 0025, 1025, etc have 25mm cranks. In the days of microfiche, the trim number gave us information on rpm the original engine was set up to run at. If the engine was replaced, the original trim number was looked up on a chart on the fiche cards which noted the rpm the replacement engine would be adjusted to. Currently, trim numbers relate to emission characteristics of the engine and running rpm is found on the same page that provides replacement engine information. Specifications book, pg 13

Engine Numbers & What They Mean Code Number - 071015YB 8 - Digit “Production Date Code” 07 - 2007 10 - 10th Month - October 15 - 15th Day YB - Shift, Plant, Assembly Line The engine code number provides the date the engine was manufactured and in most cases, the line and shift or plant. There is also a serial number sticker that individually identifies each engine so it can be tracked by BAS, OEMs and the EPA.