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nkay1985 · 19-12-2008, 17:45

Hi guys,

I've been searching the net and this forum trying to find out exactly where the bleed screw is on a Riello 40 oil pump. I don't want to hazard a guess in case I mix it up with the pressure adjuster.

Can anyone be of any assistance?

stillbornalive · 19-12-2008, 18:29

hi on the side of the pump near to the top of it, you will see a alan key socket usually a size 4. thats the bleed open it but do not take it out air will be releaced and when fuel comes out close it up

Avns1s · 19-12-2008, 18:40

Bottom Nut - about 5/8" IIRC (the silver one).

f1_jb · 19-12-2008, 18:43

If you look at the pump on the left of the burner you will see facing you a Screw in the middle of a nut don't touch this) and below that a nut, this is the bleed nut I think its a 13mm loosen it a bit and wait until you get a small flow of oil out of it.

What ever you do don't adjust the flat head screw head as this is the pressuer adjuster.

JamesM · 19-12-2008, 18:45

Both are correct. The allen screw is the 1st to try - If you don't have an allen key, try the nut below the adjusting screw.
Jim.

nkay1985 · 19-12-2008, 21:52

Yeah that's the one I figured it was but thanks for the verification. All working fine now.

leoch · 15-05-2012, 11:14

i just got my riello 40 going from being airlocked but i think i almost took out the air adjuster screw but it seems to be heating now the best i screwed back in the air adfjuster screw but dont know if its in far enough or not far enough how would you know

19-12-2008, 17:45	#1
nkay1985 Registered User Join Date: Apr 2008 Location: The sprawling metropolis that is Waterford Posts: 6,670 Adverts \| Friends	Bleed screw on Riello 40 Hi guys, I've been searching the net and this forum trying to find out exactly where the bleed screw is on a Riello 40 oil pump. I don't want to hazard a guess in case I mix it up with the pressure adjuster. Can anyone be of any assistance?

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19-12-2008, 18:29	#2
stillbornalive Registered User Join Date: Oct 2008 Posts: 38 Adverts \| Friends	hi on the side of the pump near to the top of it, you will see a alan key socket usually a size 4. thats the bleed open it but do not take it out air will be releaced and when fuel comes out close it up

19-12-2008, 18:43	#4
f1_jb Registered User Join Date: Aug 2007 Location: Dublin Posts: 125 Adverts \| Friends	If you look at the pump on the left of the burner you will see facing you a Screw in the middle of a nut don't touch this) and below that a nut, this is the bleed nut I think its a 13mm loosen it a bit and wait until you get a small flow of oil out of it. What ever you do don't adjust the flat head screw head as this is the pressuer adjuster.

19-12-2008, 18:45	#5
JamesM Registered User Join Date: Sep 2005 Location: Dublin Posts: 1,318 Adverts \| Friends	Both are correct. The allen screw is the 1st to try - If you don't have an allen key, try the nut below the adjusting screw. Jim.

19-12-2008, 21:52	#6
nkay1985 Registered User Join Date: Apr 2008 Location: The sprawling metropolis that is Waterford Posts: 6,670 Adverts \| Friends	Yeah that's the one I figured it was but thanks for the verification. All working fine now.

15-05-2012, 11:14	#7
leoch Registered User Join Date: Apr 2010 Posts: 223 Adverts \| Friends	i just got my riello 40 going from being airlocked but i think i almost took out the air adjuster screw but it seems to be heating now the best i screwed back in the air adfjuster screw but dont know if its in far enough or not far enough how would you know