Carburettor Service Tip

[Vintage Engine Repairs]

Hope it saves you chasing your tail, easy to miss!!

 

[angelo c]

What did you "spray it off" with ?

 

[Vintage Engine Repairs]

What did you "spray it off" with ?

Carby cleaner

 

[Vintage Engine Repairs]

I actually find alcohol to work just as well for varnished fuel sometimes even better, however I don’t have it in a pressurised can do in this case I used carb spray. Alcohol is excellent in tanks etc.

 

[Chevboy0167]

Hey Vintage.... would this work for you? Uses regular compressed air. I got a few yrs ago when they were cheaper. Work well with any solvent and can be rebuilt.

https://www.ebay.com/itm/1658683465...EiwhGzD1s8qHzzW0988ejKCtDE|tkp:Bk9SR-DIjqC4YQ

 

[ballisticdoughnut]

I actually find alcohol to work just as well for varnished fuel sometimes even better, however I don’t have it in a pressurised can do in this case I used carb spray. Alcohol is excellent in tanks etc.

Funny you should mention that. I’ve got a Husqvarna 140S I’m resurrecting that’s got some fairly heavy varnish in the fuel tank. Did a little research and MEK is supposed to be the bees knees for dissolving varnish. Pretty nasty stuff but if it works I’ll be happy.

 

[Mad Professor]

Funny you should mention that. I’ve got a Husqvarna 140S I’m resurrecting that’s got some fairly heavy varnish in the fuel tank. Did a little research and MEK is supposed to be the bees knees for dissolving varnish. Pretty nasty stuff but if it works I’ll be happy.

Be careful, acetone will do bad things to lots of plastics. I'd spot check it first.

 

[Mad Professor]

Is the fuel in Australia blended with ethanol too? Or is that just a foolish thing pushed on Americans by our government?

Reason I ask is the yellow snot on the screen looks a lot like "ethanol poisoning" I see in carbs here.

 

[ballisticdoughnut]

Be careful, acetone will do bad things to lots of plastics. I'd spot check it first.

No worries, magnesium tank. I am concerned about whatever Husqvarna used to seal the two halves of the tank though. Gonna do a small spot check on it before I proceed.

 

[True Grit Scott]

These sprayers are super handy...use them daily...

Hey Vintage.... would this work for you? Uses regular compressed air. I got a few yrs ago when they were cheaper. Work well with any solvent and can be rebuilt.

https://www.ebay.com/itm/1658683465...EiwhGzD1s8qHzzW0988ejKCtDE|tkp:Bk9SR-DIjqC4YQ

 

[Vintage Engine Repairs]

Is the fuel in Australia blended with ethanol too? Or is that just a foolish thing pushed on Americans by our government?

Reason I ask is the yellow snot on the screen looks a lot like "ethanol poisoning" I see in carbs here.

Na we don’t get ethanol out here in this state

 

[Vintage Engine Repairs]

Hey Vintage.... would this work for you? Uses regular compressed air. I got a few yrs ago when they were cheaper. Work well with any solvent and can be rebuilt.

https://www.ebay.com/itm/1658683465...EiwhGzD1s8qHzzW0988ejKCtDE|tkp:Bk9SR-DIjqC4YQ

Thanks for the heads up!!

 

[cookies]

Also be aware of aftermarket screens not being as fine of mesh

 

[sean donato]

Good bit. most overlook the screens. Typically I just replace them as they come in most master kits. At least the oe walbro kits typically have them.

 

[benelli7d]

With my bad up close vision, I just spray the hell out of everything when I'm rebuilding carbs on anything, cars, bikes, lawn mowers, etc. Easier for me to overkill it than to wonder if I got it all.

 

[Okie]

I've seen those screens inside a chainsaw carb clog and that stuff get past a good in tank fuel filter.
I inspect the screen very good with a magnifying glass or just go ahead and remove the screen and make sure it's clean.
I've seen a strange mold grow inside magnesium gas tanks and clog those screens fast. (and the clog will be overlooked if just a casual glance inspection)
Carb will usually act like it's starving for fuel when the saw is under a load and may set and idle good.

 

[Chevboy0167]

Yup... it happens!

 

[MacAttack]

Na we don’t get ethanol out here in this state

Lucky. No corn lobby pushing that poison into your gasoline!

 

[jenko]

Na we don’t get ethanol out here in this state

We get it in Victoria but it’s limited to 10% and advertised as e10

 

[thenne1713]

Yup... it happens!

View attachment 1049699

I had good luck on a few gently wiping screen with dull wood toothpicks; the trash seemed to adhere and clear the screen. Good luck.