Stihl MS 192 T - Fixed Jet; Pump Diaphragm

77MS 192 T
– Remove the metering
diaphragm, b 14.3.1
: Unscrew the fixed jet (1) with a
suitable screwdriver.
Take care not to damage the jet.
1
217RA221 TG
– Examine the fixed jet and replace
it if necessary.
– Reassemble parts in reverse
order.
– Remove the carburetor, b 14.2
: Remove the screw (arrow).
217RA222 TG
: Carefully remove the end
cover (1).
217RA223 TG
1
: Carefully remove the gasket with
pump diaphragm from the
carburetor body.
217RA224 TG
: Carefully separate the pump
diaphragm (1) and gasket (2).
The diaphragm material is
subjected to continuous alternating
stresses and eventually shows
signs of fatigue. In other words, the
diaphragm distorts and swells and
1 2
217RA225 TG
must be replaced.
– Examine the pump diaphragm for
signs of damage and wear,
replace the gasket.
– Inspect the fuel strainer for
contamination and damage,
clean or replace it if necessary.
: Pull the fuel strainer (1) out of the
carburetor body with a needle
and clean or replace it.
– Reassemble parts in reverse
order.
1
217RA154 TG
14.3.3 Fixed Jet 14.3.4 Pump Diaphragm