Regal LS4C Owner's Manual page 170

DIAGNOSTIC CHART
Problem
No Power To Helm
Engine Cranks But Will Not Start
Hard Starting
Engine Idles/ Runs Rough
ENGINE
Possible Cause
Battery switch turned off
Batteries are weak or dead.
Main breaker tripped
Loose connection
Fuel flow obstructed/water in fuel
Low battery voltage
Engine ignition system malfunction
Timing belt broken
No fuel in tank
Lanyard not attached
Control not in neutral
Vacuum In Fuel System
Fuel system obstructed
Water in fuel system
Old fuel
Faulty spark plugs
Fuel contaminated/ clogged anti-siphon
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