Stihl SP 451, Instruction Manual

Page: 25 / 32

SP 451, SP 481
English
23
Maintenance and Care
The following intervals apply to normal operating conditions only. If your daily work-
ing time is longer or operating conditions are difficult (very dusty work area, etc.),
shorten the specified intervals accordingly.
be
for
e
st
art
ing
wor
k
af
te
r fin
ishing work or dail
y
af
te
r each ref
ueli
ng st
op
weekly mon
thl
y
ever
y 12 mont
hs
if p
robl
em
if d
a
mage
d
if r
equi
red
Complete machine
Visual inspection (condition, leaks) X X
Clean X
Control handle Check operation X X
Air filter
Clean X X
Replace X
Pickup body in fuel tank
Check X
Replace X X X
Fuel tank Clean X X X
Carburetor
Check idle adjustment – the hook must
not move
X X
Adjusting Idle Speed X
Spark plug
Adjust electrode gap X
Replace after every 100 operating hours
Cooling inlets
Visual Inspection X
Clean X
Spark arresting screen
1)
in muffler
Check
2)
X X
Clean or replace
2)
X
All accessible screws and nuts (not adjust-
ing screws)
Retighten X
Antivibration elements
Check X X X
Replace
2)
X X
Hook with rubber element
Visual Inspection X X
Check tightness X X
Replace X X