To stop engine, Adjustments, Height adjustment – MTD 675 thru 689 User Manual
Page 7: Carburetor adjustment, Figure 17, Clutch rod adjustment, Maintenance, Lubrication
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N
3.
Grasp starter handle and pull rope out slowly until
engine
reaches
start
of
compression
cycle
(rope
will pull slightly harder at this point). Let the rope
rewind slowly.
4.
Pull rope with a rapid, continuous, full arm stroke.
Keep
a
firm
grip
on
starter
handle.
Let
rope
rewind
slowly.
Do
not
let
starter
handle
snap
back
against starter.
5.
Repeat
instructions
3
and
4
until
engine
fires.
When
engine
starts,
move
choke
control
gradual
ly to RUN position.
6.
Self-Propelled
Models
Only
—To
engage
the
drive
mechanism,
squeeze
the
clutch
grip
against
the
upper
handle.
Release
the
clutch
grip
to
stop
the forward motion.
TO STOP ENGINE
1.
To stop engine, move throttle control lever to OFF
position.
2.
Disconnect
spark
plug
wire
and
ground
to
prevent
accidental starting while equipment is unattended.
IMPORTANT:
The
vacuum
bag
may
have
an
air
escape
located
on
the
upper
right
hand
side.
See
figure
16.
The
air
escape
can
be
opened
if
the
vacuum
is
operated
in
wet,
sandy
or
muddy
conditions.
The
bag
may
be
emptied
using
the
large
zipper
as
shown in figure 16.
Be certain the zipper is closed
when operating the unit.
FIGURE 16
ADJUSTMENTS
A
WARNING: Do not at any time make any
adjustment to the unit without first stop
ping engine and disconnecting spark
piug wire.
HEIGHT ADJUSTMENT
The
height
adjustment
crank
is
located
on
the
right
hand
side
of
the
vacuum.
See
figure
17.
Turn
the
crank
clockwise
to
raise
the
nozzle.
Turn
the
crank
counterclockwise to lower.
CARBURETOR ADJUSTMENT
A
WARNING: If any adjustments are made
to the engine while the engine is running
(e.g. carburetor), keep clear of all moving
parts. Be careful of heated surfaces and
muffler.
FIGURE 17.
Minor
carburetor
adjustment
may
be
required
to
com
pensate
for
differences
in
fuel,
temperature,
altitude
or load.
NOTE: A dirty air cleaner will cause engine to run
rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor.
Do
not
make
unnecessary
adjustments.
Factory
set
tings
are
satisfactory
for
most
applications
and
condi
tions.
If
adjustment
is
needed,
refer
to
the
separate
engine manual packed with your vacuum.
CLUTCH ROD ADJUSTMENT
(Self-Propelled Models Only)
To
adjust
the
clutch
rod,
refer
to
step
numbers
3
and
4
under
“Attaching
the
Clutch
Rod”
in
Assembly
Instructions.
MAINTENANCE
A
WARNING: Always stop engine and dis
connect spark plug wire before cleaning,
lubricating or performing any repairs or
maintenance.
LUBRICATION
Wheels—Rear
wheels
are
provided
with
light
oil
bear
ings. Place a few drops of SAE 30 oil on each bearing
once a season.