nkay1985 Registered User
#1

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 Registered User
#2

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 Registered User
#3

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


Attachments
Riello.jpg
f1_jb Registered User
#4

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 Registered User
#5

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 Registered User
#6

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

leoch Registered User
#7

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

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