Chapter 1. General Information; Section 1. Engine Identification - Tecumseh HH100 Handbook

CHAPTER 1. GENERAL INFORMATION

Tecumseh engine model numbers are stamped into
the blower housing, or are located on a nameplate
or tag on the engine in locations as illustrated.
INTERPRETATION OF MODEL NUMBER. The first
letter designations in a model number indicate the
basic type of engine.
HH - Horizontal-Heavy Duty (Cast Iron)
VH - Vertical-Heavy Duty (Cast Iron)
OH - Overhead Valve-Heavy Duty (Cast Iron)
The number designations following the letter indicates
the horsepower of the engine.
The number following the model number is the
specification number. The last three numbers of the
specification number indicate a variation to the basic
engine specification.
The serial number indicates the production data.
Using model number OH160-170033, Serial 8044C
as an example, interpretation is as follows:
OH160-170033 - is the model and specification number.
OH - Overhead Valve-Heavy Duty (Cast Iron)
160 - Indicates 16 horsepower.
170033 - is the specification number used for properly
identifying the parts of the engine.
8044C - is the serial number.
8 - first digit is the year of manufacture (1998)
044 - indicates calendar day of that year (044 day
or February 13, 1998).
C - represents the line, shift or plant in which the
engine was built at the factory.

SECTION 1. ENGINE IDENTIFICATION

SHORT BLOCKS. New short blocks are identified
by a tag marked SBH (Short Block Horizontal) or
SBV (Short Block Vertical). Original model tags of
engines should always be transferred to a short block
for correct parts identification.
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