Husqvarna 50 Workshop Manual page 13

4
Align the pin holes and drive in the pin. After assembly
check throttle lockout function. It should not be possible
to move the throttle trigger (accelerate the saw) without
first depressing the lockout lever.
NOTE !
On 51 and 55 models, the fast idle system is integrated
into the choke system. When the choke knob is pulled,
the fast idle is engaged for starting purposes. When the
throttle trigger is depressed, the fast idle system
disengages allowing the engine to return to idle when the
trigger is released.
Chain Catcher
Check the chain catcher. If the chain catcher is missing
or damaged, install a new catcher.
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