Zama, Walbro Carb issues/rebuild

[Muddy42]

On 10/10/2025 at 05:30, Stubby said:

All you say above is true but .....with an alkylate fuel ( I use Husqvarna Xpower ) you don't get the carbon deposets that you do with pump fuel .If you run a new machine from the get go on alkylate fuel for a year then strip it down t inspect it looks like it has only been run for a day or two .  

 

Stubby, is there a way to clean out these carbon deposits without removing the cylinder?

 

Personally I use alkylate in the infrequently used tools and fresh pump fuel in two 'everyday' newer brushcutters and chainsaw. At the end of the grass season the strimmer gets run dry then run on a bit of alkalate before servicing and storage.

[Tree monkey 1682]

10 hours ago, Macpherson said:

 

I agree with that, and the reason will be some arsehole agenda

I believe in Scandinavia that there is an Alkylate pump at filling stations, but it's something I heard on here a long time ago so I don't know if this is still the case.

I very much doubt if our backwards, corrupt, race to the bottom little island will ever adopt anything resembling common sense. 

We were about 10 years behind from Scandinavia with wood chippers , 

But your right about the governments,  I just dont know about how u fix that !

And i used to do the whole winter storage thing and that never worked either-the run it dry thing maybe its different with alkalyte fuel in before hand 

[Muddy42]

I think I can tell when fuel lines are getting brittle, with the carb disconnected. I clean the engine then give the lines a poke around under good light.  Cracks will open up when moved but also the rubber feels hard not supple.  I've always assumed the fuel line will perish first, because its constantly exposed to fuel.  So if it shows cracks, I'll replace all the rubber - boots, carb kit etc. I've done this a few times on two strokes and less often on four strokes.