Engine Manifold Preheater System
Engine manifold preheater system malfunctioning.
Manifold preheater fails to operate. Do steps 1 thru 19.
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry contacts a metal surface a direct
short may result in instant heating of tools, damage to equipment, and injury or death to personnel.
Remove three screws (1), three lockwashers (2), ground lead (3), flat washer (4), and release main
switch panel (5) from mounting brackets. Disconnect switch panel to neutral safety to bulkhead wiring
harness from main switch panel. Place red lead of multimeter in socket A of wire 14 and black lead to
ground. Turn MASTER switch on, push START switch, and check for voltage. Turn MASTER switch
OFF. If voltage is not present, go to step 15. If voltage is present, go to step 2.