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5.2 TROUBLESHOOTING CHART
The information contained in the troubleshooting chart has been compiled from field report data and factory
experience. It contains symptoms and usual causes for the report data and factory experience. It contains
symptoms and usual causes for the described problems; however, do not assume that these are the only
problems that may occur. All available data concerning the trouble should be systematically analyzed.
Before undertaking any repairs or component replacement procedures, a detailed visual inspection is worth
performing for almost all problems and may avoid unnecessary additional damage to the machine.
• Check for loose wiring.
• Check for damaged piping.
• Check for parts damaged by hear or an electrical short circuit, usually apparent by discoloration or
a burnt odor.
Should your problem persist after making the recommended checks, consult your nearest Boss Air
Compressor distributor or the Boss Air Compressor factory by calling 1-800-635-6587 or (219) 324-
7776.
SYMPTOM CAUSE REMEDY
Faulty battery connections.
Check the battery terminals for tightness
and corrosion.
a. Check voltage and charge or replace
the battery.
b. Unit may be jump-started.
Faulty ignition switch. Replace the switch.
Starter solenoid connections
are loose or corroded.
Clean and tighten connections.
Faulty starter solenoid or
starter.
Repair or replace the faulty components.
a. Check fuel level and add if necessary.
b. If the unit has ran out of fuel it may be
necessary to prime the fuel system.
a. Check fuel line connections and
tighten or repair.
b. Prime the fuel system.
Defective safety bypass
switch.
Replace the switch.
a. With ignition and safety bypass on,
check for voltage at the solenoid.
b. Check safety switches.
Machine will not
crank.
Machine cranks,
but will not start.
No fuel.
Air in the fuel system
Fuel solenoid inoperative.
Low battery voltage.