Page. 15. Paragraph 20. 1 is added after paragraph 20.
20.1. Engine Fuel Level Gage (Model W15A4112)
The engine fuel level gage is mounted on the engine control panel to the right of the oil pressure gage. The gage
indicates the amount of fuel remaining in the tank. A switch is provided in the gage circuit to turn the gage off and on (4,
fig. 10.1).
Paragraph 25.1 is added after paragraph
25.
25.1. Water Tank Level Gage (Model W15A4112)
The water tank level gage (21, fig. 4. 1) is located at the rear of the tank, in the approximate center. The gage indicates
in 25 gallon increments, the quantity of water remaining in the tank.
Page 18. Paragraph 36c(3). 1 is added after Paragraph 36c(3).
(3). 1. Attaching Spraybar Extensions. The spraybar extensions (24 and 25, fig. 34.1) are used to increase the
spray pattern width from 8 feet up to 24 feet, in increments of one or two feet. The extensions are fitted with quick
disconnect couplings, and are stored in the tool box. Extension sections should be positioned for proper alignment of the
nozzles before the couplings are locked.
Page 41. Paragraph 71. 1 is added after paragraph 71.
71.1. Description (Model W15A4112) Fuel is drawn from the engine fuel tank (1, fig. 10.1) through a fuel strainer (16,
fig. 10.1) which incorporates a fuel shutoff valve.
Page 42. Paragraph 73a (1). 1 is added after paragraph73a (1).
(1). 1 On model W15A4112, remove the fuel strainer (16, fig. 10. 1) from the engine fuel tank outlet line.
Paragraph 73c(2). 1 is added after paragraph 73c(2).
(2). On model W15A4112, thread the copper fuel line along the carrier frame to the fuel strainer at the fuel tank
outlet, and attach the copper fuel line to the strainer with the connector (19, fig. 10.1).
Page 57. Paragraph 101. 1 is added after paragraph 101.
101. 1. Water Tank Level Gage (Model W15A4112)
a. General. The water tank level gage is mounted on the rear of the water tank near the operator's position and
indicates water level.
b. Removal and Disassembly.
(1) Drain the water tank.
(2) Remove the two screws (6, fig. 30.1) securing the dial bezel. Remove the bezel and dial.
(3) Remove the four screws (3) that secure the gage assembly to the tank. Carefully draw out the gage assembly
and gasket.
c. Cleaning, Inspection and Repair.
(1) Clean all metal parts with an approved cleaning solvent and dry thoroughly.
(2) Inspect the collar welded to the water tank for cracks or broken welds. Repair a boken weld.
r
(3) Inspect the gage for damage. Replace a damaged or defective gage.
(4) Inspect the dial assembly for damage. Replace a damaged dial.
(5) Discard gasket and replace with a new one when reinstalling the gage assembly
d. Reassembly and Installation.
(1) Place gasket over shoulder at rear of gage mounting plate.
(2) Carefully insert gage assembly through hole in the collar welded to the
water tank.
(3) Install four screws to retain mount-
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