SECTION
B
EXHAUST SYSTEMS
Canslderable
effort has
gone
lnto the
oesign
of the
ROTAX exhaust systeos.
AnJ chan8es
may
severely deterLorate
perfornance,
rellability, engine life,
fuel
economy, and the
system's ab{llty to
reduce
nolse
to acceptable
levela.
Beware
of
any acceEaary'systens
that
advertlEe
an improvernent
over
the
stock
conponenta,
Af
vlbratlon due to ihproper
Drounting
is any exhaust
systeru's
worat ene,ny. Properly rnounted anil
rflaintained,
your
exhaust
Bysten wlLl
provide
a long
serviee life, Never
renove
coupllng sprlng
{ith
a sharp object or one
which
can nark
the
gpt
lng
natenlal. A rounded
screw-driver 6bank or a hook
fashloned fron 1/4'r bar stock ls ideal. Safety-{irlng
of aprlngs
lE essentlal,
as
a broken
spllng falling
lnto t-lre
proPeller
corild
cause
sevele
danage.
Flequently
check
Eprlngs for
wear
at
the
points
of contact
r'lti
the
iooks
and tie
exlaust'
Replace sprlngs
when necessary'
sEcrloN
9
rNsrRUMENrs
fnatruments
""r,
U"
"
valuable
addi.tion
if
they are of
good qqal,lty,
correctly insta1led, are
nonitored,
anal the
operator understands what
they are
telling him,
A
Never uEe
a
tachodeter tvhlch
can
cause
a
short-cut
on the
lgnition bysteE. AItet'natlvely
use
a
tachometer
operating
on
the
llghting
col1.
Al!. instruaents requinlng
power
source nust
be oyerload
protected.
Al,1 wfuing and
sensor leada
nust
be
properly
routed,
protected
fron vibratl.ons and abraslon.
The
501
englne is designed and
tuned
to operate
at 6150
fuu.
load,
full
throttle.
The
,77
and 447 engines operete
at 6500
fu1l
loaal,
fuII
throttlc.
a
cyl.lniler
head telopelatule
guage elth
a senso!
unalelneath
the sPark
Plug
seat
ls a useful
accessory.
ltre
naxltlutD c'!'llnile! hea'l
terperature
Ls 25ooc'
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