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TROUBLESHOOTING GUIDE
Engine backres, dicult
to start, reduced power,
over-heating, or other
poor performance
Problem Reason Solution
Propane regulator out of adjustment or faulty
Propane ow restricted
Have certied dealer inspect regulator and
adjust.
Refer to section “Engine turns over, but does
not start or run”, above.
Dirty air lter
Ignition system faulty
Poor compression
Engine timing issue
Cooling Fins Clogged
Numerous causes
Service air lter.
Check or replace ignition coils.
See engine manual or dealer.
See engine manual or dealer.
See engine manual or dealer.
See engine manual or dealer.
EMISSION CONTROL SYSTEM
To protect the environment the manufacturer has incorporated (1) crankcase emission and (2) exhaust
emission control systems (EM) in compliance with applicable regulations of the United States Environ-
mental Protection Agency and California Air Resources Board.
1. Crankcase Emission Control System. A sealed-type crankcase emission control system is used to elimi-
nate blow-by gases. The blow-by gases are led to the breather chamber through the crankcase where it is
led to the air cleaner. Oil is then separated from the gases while passing through the inside of the breather
chamber from the crankcase, and then returned back to the bottom of crankcase.
2. Exhaust Emission Control System. The exhaust emission control system applied to this engine consists
of a carburetor and an ignition system having optimum ignition timing characteristics. The carburetor has
been calibrated to provide lean air/propane mixture characteristics and optimum propane economy with a
suitable air cleaner and exhaust system.
TAMPERING WITH EMISSION CONTROL SYSTEM PROHIBITED
Federal law and California State law prohibits the following acts or the causing thereof: (1) the removal or
rendering inoperative by any person other than for purposes of maintenance, repair, or replacement, of
any device or element at design incorporated into any new engine for the purpose of emission control prior
to its sale or delivery to the ultimate purchaser or while it is in use, or (2) the use of the engine after such
device or element of design has been removed or rendered inoperative by any person.
Among acts presumed to constitute tampering involve the parts/systems listed below:
• Carburetor and internal parts
• Spark plugs
• Magneto or electronic ignition system
• Propane lter element
• Air cleaner elements
• Crankcase
• Cylinder heads
• Breather chamber and internal parts
• Intake pipe and tube
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