Husqvarna 226R, Workshop Manual

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17
Fuel system
Dismantle the high-speed screw. Dismantle the high-speed screw.
Before dismantling, note how many turns
it is open.
The basic setting is 1.5 turns open.
Dismantle the control diaphragm.
Remove the 4 screws.
These are long and hold together the
complete carburettor.
Now lift off the fuel pump’s bellows (A),
valve housing (B) and control diaphragm.
Lift up the non-return valve (C) and check
that the seals are intact.
Clean the valve housing.
Carefully lift up non-return valve (C) using
your nails.
Clean the valve housing and check that
the channels are open.
Check that the non return valve’s seals
(D) are undamaged by carefully squeezing
the short sides together.
Replace the valve if necessary.
Remove the pump diaphragm to check for
wear and damage.
Clean or replace the fuel screen (1).
Carefully remove the pump diaphragm
and its gasket.
Check the diaphragm for wear to the valve
fl aps (2). Hold it, for example, up to the
light to discover holes in the material.
Clean the fuel screen (1). Remove it for
replacement if necessary using a needle.