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Stihl TS 420 - 12.6.1 Impulse hose

Stihl TS 420
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93TS 410, TS 420
12.6 Intake elbow, removal
and installation
A damaged intake elbow may lead
to impaired engine performance.
Troubleshooting, b 4.5 or
b 4.6.
Remove the shroud, b 7.4.
Remove the carburetor b 12.2.
Disconnect the impulse hose
from the connector on the flange,
b 12.6.1.
Remove the ignition lead and
wiring harness from the air guide
shroud.
: Take out the screws (arrows).
Remove the air guide shroud (1).
: Take out the screws (arrows) and
open the hose clips completely.
370RA117 TG
1
370RA405 TG
: Pull the intake elbow (1) off the
intake fitting.
Remove the hose clips.
: Pull the intake elbow (1+2) out of
the flange (3).
Examine and replace the flange if
necessary.
Examine and replace the intake
elbow (1+2) if necessary.
The slightest damage may lead
to impaired engine performance.
Check and clean the intake fitting
(arrows) on the cylinder, b 14.
370RA406 TG
1
370RA407 TG
1
3
2
370RA408 TG
The intake fittings must not display
any signs of damage. Damaged
parts must be replaced.
Align the elbow so that the tab (3)
engages in the mount (arrow) on
the flange (2) and the marking (4)
points towards the upper elbow.
: Press the lower elbow (1) into the
flange (2) until it encloses the
lower hole completely.
Align the elbow so that the recess
is lined up with the hole (arrows)
on the flange (2).
: Press the upper elbow (1) into the
flange (2) until it encloses the
upper hole completely.
370RA410 TG
3
4
1
2
370RA409 TG
1
2

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