All engine components in this catalog are divided into seven major groups of functionally related parts.
Each Engine Model is provided with a Model Index, which shows the Standard and Standard Option type numbers
currently available on the model. All optional material type numbers are listed on the engine Option Plate, as shown in
the illustration below.
The names and type numbers of optional equipment built into the unit at the factory are listed on this plate, along with the
unit model, serial number and customer specification number (if any). Material not listed on the Option Plate is standard
equipment and the type number is obtained from the model index. (Copies of the information, on the Option Plate Work
Sheet, are furnished to distributors for their files.)
To locate a part, first, establish the group where the part is used (see the Alphabetical Index or Group Nomenclature
page), With this information, turn to the proper group.
For purposes of illustration) a Model 5033-7101, serial number 3D-1417 RC engine, will be used. To determine the
proper part number of the fan pulley
As indicated in the
Group Nomenclature page, the Fan is
The part is illustrated in Figure 4A, identified as being in group 5.4235.
To determine the proper part number of the cylinder block end plate, again refer to the Option Plate to note that there is
no reference to the cylinder block - indicating that it is standard equipment.
To determine the proper fuel filter element part number, refer to the Option Plate to determine that the filter is standard
Turn to group 2.3000A and in the column note that the part number of the filter assembly, in sub-group 2.3310, is
5573949. However a note in the group heading refers to "Assembly Breakdown, Page B8 for components of the filter
assembly. On page BS, the filter assembly 5573949 appears in column. All components of the filter assembly will be
January, 1972 Page 3