T M 9 - 2 8 0 5 - 2 5 7 - 2 4P
T O 3 8 G 2 - 1 0 3 -4
S L - 4 - 0 3 5 2 1 B
a. USABLE ON CODE. The usable on code appears in the lower left corner of the Description Col-
umn heading. Usable on codes are shown as "UOC:.. " in the Description Column (justified left) on the last
line of the applicable item description/nomenclature. Uncoded items are applicable to all models. Identifica-
tion of the usable on codes used in this RPSTL are:
C o d e
b F A B R I C A T I O N I N S T R U C T I O N S.
Bulk materials required to manufacture items are listed in the
Bulk Material Functional Group of this RPSTL. Part numbers for bulk materials are also referenced in the
description column of the line entry for the item to be manufactured/fabricated. Detailed fabrication instruc-
tions for items source coded to be manufactured or fabricated are found in TM9-2805-257-14.
c. INDEX NUMBERS.
Items which have the word BULK in the figure column will have an index num-
ber shown in the item number column. This index number is a cross-reference between the National Stock
Number/Part Number Index and the bulk material list in Section ll.
d. ASSOCIATED PUBLICATIONS. The publications listed below pertain to the Engine, Gasoline, 3
hp Military Standard Models and its components.
L O 9 - 2 8 0 5 - 2 5 7 - 12
Lubrication Order, Gasoline Engine, 3hp
Military Standard Models.
T M 9 - 2 8 0 5 - 2 5 7 - 14
Operator, Unit, Direct Support and General
Support Maintenance Manual.
HOW TO LOCATE REPAIR PARTS.
a. When National Stock Numbers or Part Numbers are NOT Known.
(1) First Using the table of contents, determine the assembly or subassembly group to which
the item belongs. This is necessary since figures are prepared for assembly groups and subassembly
groups, and listings are divided into the same groups.
(2) Second. Find the figure covering the assembly group or subassembly group to which the
(3) Third. Identify the item on the figure and use the Figure and Item Number Index to find
b . W h e n N a t i o n a l S t o c k N u m b e r o r P a r t N u m b e r i s K n o w n.
(1) First, Using the of National Stock Number and Part Number Indexes find the pertinent
National Stock Number or Part Number. The NSN index is in National Item Identification Number (NIIN)
sequence (see paragraph 4.a.). The part numbers in the Part Number index are listed in ascending al-
phanumeric sequence (see paragraph 4.b.). Both indexes cross-reference you to the illustration/figure
and item number of the item you are looking for.
(2) Second. Turn to the figure and item number, verify that the item is the one you are looking
for, then locate the item number in the repair parts list for the figure.
ABBREVIATIONS. Abbreviations used in this manual are listed in MIL-STD-12.