Engine Flame Arrestor; Engine Cooling - Indmar 5.7L Vortec Operator's Manual

ENGINE FLAME ARRESTOR

Your engine is equipped with a U.S. Coast Guard
approved flame arrestor. Its purpose is to contain any
backfire that may occur during the operation of your
engine. Because an inboard engine is completely
enclosed, an uncontained backfire can be extremely
dangerous.
Figure 6.5 – Flame Arrestor
Periodically inspect flame arrestor to prevent clogging by
dirt or corrosion. There are two types of flame arrestors
used in Indmar engines, metal and paper.
Metal Type
The metal flame arrestor is cleaned using a mild part
washing solvent. Using solvent, clean the flame arrestor
Indmar Marine Engines
thoroughly and blow dry. The metal flame arrestor must
dry completely before it is returned to the engine.
Paper Type
This type of flame arrestor should be blown clean from
the inside monthly and replaced annually. Use only gen-
uine Indmar replacement parts to ensure proper fit and
protection against fire and explosion.
When cleaning or replacing the flame arrestor, clean the
breather hose and replace the PCV valve at the same
time.
Do not remove the flame arrester at any time
when the engine is being started or run as it
may result in fire, explosion and death or
INDM-A027
serious personal injury.

ENGINE COOLING

Running engine without adequate cooling
can cause engine to overheat and may result
in fire, explosion, death and/or personal
serious injury.
6-7