Handheld Shower - How to remove flow restrictor?

[Almighty1]

I have a few Grohe Movario five handshowers installed throughout the house. My question is how do I get the flow restrictor removed without damaging it should I need to put it back in later and what's the best tool to use since the space is tight if it's where the red arrow is pointing as I have tried a jewelers flat screwdriver on the outer edge of the red arrow and it won't move the rubber piece. If I try to put the same screwdriver on the inside of the red arrow rubber piece, the screwdriver doesn't have room to move because of the upper wall where the purple arrow is pointing. Many thanks for any help!

 

[Breplum]

Just remove the small black o-ring and you will be delighted. A long pin (I carry a ancient dissecting pin on a wood dowel). I've done it dozens of times with that head.

 

[Sponsor]

 

[Almighty1]

@Breplum - Thanks! I tried it and that only removed the small rubber ring using a sewing needle where the green arrow points to exposing the holes below the rubber ring. How would I remove the entire white piece which would be completely unrestrict the water flow as it's the rubber gasket I have the red arrow pointing to that I can't figure out how to remove.

 

[Breplum]

I find that just removing the o ring to be enough for most customers (and myself). To remove the entire plastic restrictor it has to be wrecked by gouging one way or another.

 

[TJRAD]

I've seen grohe heads and hand sprays blow apart when the flow restrictor is completely removed. maybe try just the o-ring that breplum suggests....the movario was a 2.75 GPM head (high flow in today's times) maybe the restriction is inside the head.... it is meant to be unscrewed so just the nozzles can be cleaned.
see pics below.

 

[Almighty1]

I find that just removing the o ring to be enough for most customers (and myself). To remove the entire plastic restrictor it has to be wrecked by gouging one way or another.

I'll give it a try and see how much more water it adds and it seems to be a big increase. I know on one of them, when it was new, I was able to completely take out the entire plastic restrictor. Now I have a question, when one remodels, do they actually look at the restrictor when the county/city does the inspection? Something tells me they might not notice it if only the O ring is taken out but only if the entire white piece is taken out.

 

[Almighty1]

@TJRAD - The enitre white piece is the restrictor as when it was new, I was still able to get the white piece out once and the water flow was way higher but that was 10 years ago. I thought the 2.75gpm was without the restrictor as I remember it's 2.5gpm in the specs. Isn't the flow also limited by the cartridge of the shower valve as well? I never realize the bath faucet and the shower valve as well as the shower head is nothing but plastic as I thought it was metal because it does have that cold metal feel to it. Do you happen to know if the finish can be fixed with touch up paint or what is used as I have a white spot on the side of the showerhead which is nickel colored on one of them and it still hasn't been used more than a few times. But many thanks for your input as well.

Update: Seems taking out the o ring did increase it a lot!

 

[Almighty1]

I decided to leave the O ring without pushing it into position so it will float in the water so I don't lose it when needed and it still has the same unrestricted water flow since it is not blocking those holes and I figure if it can handle all that pressure when in position then it should be durable but just wondering, are these o rings easy to find and standard sized? Thanks!