Superabrasive
User
Manual
Original
Language
Lavina®
25G
‐
S
7/2014
20
9.
TROUBLESHOOTING
9.1
ENGINE
When
troubles
occur,
be
sure
to
check
the
simple
causes
which
at
first,
may
seem
too
obvious
to
be
considered.
For
example,
a
starting
problem
could
be
caused
by
fuel
starvation
due
to
an
empty
propane
cylinder
or
an
unopened
service
valve.
If
you
do
not
check
for
this,
starter
burnout
could
result.
Some
Troubles
and
solutions:
Surging
idle
To
smooth
out
the
engines'
idle
characteristics,
adjustment
is
provided
by
an
idle
screw
on
the
lower
left
side
of
the
carburetor
as
viewed
from
the
operator's
position.
The
screw
is
bright
steel
and
1/4"
in
diameter
with
a
Phillips
head
on
it.
Rotating
the
screw
clockwise
will
increase
the
idle
speed
and
this
should
cure
the
"surging
idle".
If
it
does
not,
call
our
customer
service.
Engine
starts
and
idles,
but
will
quit
as
the
throttle
is
advanced
It
is
possible
that
the
propane
tank's
service
valve
is
faulty.
To
check
for
this,
close
the
valve
completely
and
then
reopen
very
slowly
while
you
listen
for
a
"click"
when
the
gas
begins
to
travel
through
the
valve.
If
you
hear
this
very
slight
noise,
the
valve
is
only
partially
opening.
This
allows
enough
gas
through
to
start
and
idle
the
engine,
but
not
enough
for
full
throttle
operation.
As
the
throttle
is
increased,
allowing
more
air
to
enter
the
intake,
the
engine
will
quit
from
fuel
starvation.
Call
your
dealer
or
the
factory
for
instructions
on
where
to
have
the
service
valve
replaced.
Meanwhile,
to
get
by,
you
can
continue
to
open
the
service
valve
until
you
do
not
hear
a
“click"
and
then
the
engine
will
run
normally.
If
it
does
not,
call
your
customer
service.
Starter
barely
turns
the
engine
over
or
the
solenoid
just
clicks
The
battery
is
likely
low
in
charge.
This
can
be
remedied
by
recharging
the
battery
using
a
12
Volt
battery
charger
at
4.12
amperes.
The
battery
is
located
under
the
frame
at
the
rear
of
the
buffer.
The
positive
post
is
the
one
with
the
RED
cable
attached
to
it.
Follow
the
instructions
that
came
with
the
battery
charger.
REMINDER:
this
will
continue
to
happen
unless
your
engine
is
run
for
sufficient
time
between
starts
to
recharge
the
battery
9.2
CHECKING
AND
CHANGING
OIL
Check
the
engine
oil
level,
screw
the
dipstick
in
to
get
reading.
While
changing
engine
oil,
check
for
leakage
of
engine
oil
at
the
various
seals.
The
hour
meter
will
blink
between
48
‐
52
hours
as
a
reminder.
Recommended
Oil
Change
Intervals
Do
not
exceed
the
50
‐
hour
oil
change
interval.
Oil
changes
more
frequent
than
25
hours
will
give
even
longer
engine
life.
In
any
case,
always
use
30HD
or
10W30
engine
oil
with
all
of
the
following
ratings:
SF,
SG,
and
CC.
make
sure
the
oil
level
is
maintained
at
the
"FULL"
level.
9.3
SEPARATING
THE
HEAD
FROM
THE
CARRIAGE
Please
note
that
the
propane
cylinder
has
to
be
removed
and
stored
outside
before
any
maintenance
or
reparation
is
done.
Figure 9.2.1
Figure 9.2.2
Figure 9.3.1
Figure 9.3.3
Figure 9.3.2
