TX
STARFLAME ENGINES
Twin
Cylinder
Three Cylinder
EC
29PR 294cc
E
C 43P R 439cc
E
C 34P R 335cc
EC
65PR
649cc
Your Polaris
TX
Starfire snowmobile
is
equipped
with
a
de-
pendable, high-performance
TX
Starflarne
fully
modified two-
cycle engine. Treat
it
right
...
give
it
reasonable
care.
The
first step
is
to
have
a basic comprehension
of
the mechanics
involved in its operation. Understanding
your
two-cycle engine
and how
it
functions
will
enable you
to
better maintain your
engine,
resulting in longer and better performance and life at
less
cost
to
you.
A basic component
of
the
TX
Starflame two-cycle engine
is
the piston.
When
the piston
moves
upward in the cylinder
(1st stroke),
it
draws fuel into the crankcase while
also
com-
pressing
fuel in the combustion chamber. The spark plug then
ignites the
fuel, which expands and forces the piston downward.
The down-stroke provides the power which turns the crank-
shaft.
It
also
compresses
fuel in the crankcase,
exposes
the trans-
fer ports in the
cylinder wall and
releases
a
new
supply
of
fuel
through the ports and into the combustion chamber. This forces
the burned
gases
out
through the exhaust ports.
When
you realize
that
at 6,000 RPM, this happens 100 times a
second, you
can
appreciate the importance
of
proper lubrica-
tion, fuel mixture,
and
carburetor adjustments.
34
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