Stihl strimmer starts then stalls

[Harleyboy]

Hi,

Maybe I should try a garden machinery forum but I’ll try here first!

My Stihl FS 38 runs briefly but then stops. I have looked online and done the following:

Freshly mixed fuel
Removed carb, partially dismantled and checked a funny metal gauze thing that was clean anyway
Checked fuel filter which seems clean and I could blow through without an obvious obstruction
Removed air filter but made no difference

Common faults suggest a clogged spark arrestor but mine doesn’t have one of these.

The exhaust looks a bit wet and was spitting a bit. I leaned the mixture off a bit and got it running for a few seconds rather than an immediate stall.

I’m a bit stuck now so thought I’d ask for some advice please?

Thanks
Adam

[Auntieroll]

Carb diaphragm ? Carp in the fuel line moving about and blocking jets/passages, switch,
If it has a pumper carb would suggest diaphragm as #1 likelihood.

[PGM]

I had this with my stihl hedge trimmer early on whereas the strimmer I got at the same time eas adjusts fine.

YouTube video showed adjustment screws for idle etc, that sorted mine.

[skywalker001]

Hi, can you start it up and keep it going on full throttle? is there excessive white exhaust smoke or does it smell of fuel ? are you trying to idle with the choke on?
I would change the spark plug and have a look at the magneto (coil module) for any bare wire or corroded rubber insulation? and that the gap between the magnet and magneto is 1mm