Stihl Zama Carb in FS 55 trimmer

[Brybo86]

Father in Law gave me a FS 55 that he cant keep running.

It would run for about 10 seconds after a combo of priming and choking but that was about it.

I have never taken one apart so it was a bit of a learning curve.

One thing is for sure... those passages are SMALL... My go to carb jet cleaner is a BBQ brush bristle. When I was trying to push it in those tiny little jets I first thought that the bristle was too large but it eventually got through.

also in the fuel tank i heard some rattling
this was off... and just bouncing around

but had been replaced with this type of filter....?

anyways felt pretty good, free trimmer + 45mins of my time. Is there any place to lube the drive on these? seems a little loud

 

[Hokiefyd]

Both types of filters should be okay. So you got it running without any new parts? Nice!

 

[Brybo86]

yeh just a lil carb cleaner and the bbq bristles,

also there was no spark arrestor in the exhaust, not sure if that matters?

 

[doitmyself]

Great work!

Regarding lube points, I am not familiar with that model, but most of them are similar. You can remove the gear head (#1) and pull the drive shaft out (#25). Lube both ends of the drive shaft and the entire shaft itself. There should be a removable hex port (#11) on the gear head(#1) to shoot grease into.

 

[Andy636]

Originally Posted By: Brybo86
Is there any place to lube the drive on these? seems a little loud


Screw #11 is the only place where you have to add grease from time to time. I replaced the screw on my trimmer with a zerk fitting for convenience. Half a pump with the grease gun and you are good to go for 2-3 month worth of grass trimming.