Stihl TS 420 Instruction Manual

TS 410, TS 420
English
33
Checking the Spark Plug
N Clean dirty spark plug.
N Check electrode gap(A) and
readjust if necessary – see
"Specifications".
N Rectify the problems which have
caused fouling of the spark plug.
Possible causes are:
– Too much oil in fuel mix.
– Dirty air filter.
– Unfavorable running conditions.
WARNING
Arcing may occur if the adapter nut (1) is
loose or missing. Working in an easily
combustible or explosive atmosphere
may cause a fire or an explosion. This
can result result in serious injuries or
damage to property.
N Use resistor type spark plugs with a
properly tightened adapter nut.
Installing the spark plug
N Fit the spark plug by hand and
screw it in
N Tighten spark plug with combination
wrench
N Press the spark plug boot firmly
onto the spark plug
N Position the cap for the spark plug
boot and screw it down
N Undo the nuts(1)
N Turn the tensioning nut(2)
counterclockwise with the
combination wrench –
approx.1/4turn, as far as it will
go=0
N Pull the water hose out of the guide
in the V
-
belt guard
N Remove screw(3)
N Raise the V
-
belt guard(4) slightly
and pull it off to the front
N Remove the V
-
belt from the front
pulley
000BA039 KN
A
1
000BA045 KN
Replacing the V
-
belt
1
1
1
2
370BA037 KN
0
4
3
370BA061 KN

Stihl TS 420 Specifications

General

Engine Power	4.4 bhp
Weight	21.2 lbs
Arbor Size	20 mm
Maximum Wheel Size	350 mm
Maximum Cutting Depth	125 mm
Displacement	66.7 cc (4.1 cu. in.)
Fuel Capacity	710 cc