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6-3.
Adjusting
Engine
Speed
Start
and
run
engine
at
no
load.
1
Throttle
Control
Lever
Move
lever
to
Run.
2
Speed
Adjustment
Plate
3
Securing
Screw
Loosen
securing
screws
and
move
adjustment
plate
right
or
left
until
engine
runs
at
4150
rpm.
Tighten
screws.
4
Belt
Guard
If
engine
does
not
reach
4150rpm,
stop
engine
and
remove
belt
guard
(see
Section
6-6).
5
Speed
Adjustment
Screw
Turn
screw
out
(counterclockwise)
two
full
turns.
Reinstall
belt
guard
and
start
engine.
Move
throttle
control
lever
and
speed
adjustment
plate
left
or
right
to
adjust
engine
speed
(see
items
2
and
3).
Tighten
securing
screws
and
stop
engine.
6-4.
Air
Cleaner
Service
Figure
6-4.
Engine
Speed
Adjustment
Stop
engine.
1
Air
Cleaner
Cover
2
Retaining
Screw
Loosen
retaining
screw
and
re
move
air
cleaner
cover.
3
Wing
Nut
Remove
as
shown.
4
Foam
Element
(Precleaner)
Wash
element
in
warm
water
with
detergent.
Rinse
all
detergent
from
element
and
allow
to
air-dry.
Saturate
element
with
clean
en
gine
oil.
Squeeze
out
excess
oil.
Reinstall
element
on
paper
element.
5
Paper
Element
Replace
dirty
or
damaged
element
with
a
new
element.
Do
not
wash
dirty
element
or
clean
with
com
pressed
air.
Reinstall
air
cleaner
cover.
5T-151
839
READ
SAFETY
BLOCKS
at
start
of
Section
6
before
proceeding.
Moving
Parts
Hazard.
Have
belt
guard
in
place
before
running
engine.
Tools
Needed:
~
3/8,
9/32
in
Ref.
ST-161
482
READ
SAFETY
BLOCKS
at
start
of
Section
6
before
proceeding.
4
2
3
Figure
6-5.
Air
Cleaner
Maintenance
OM-160
518
Page
13