STM4000 HEAD

[welshbloke69]

Hi everyone.
I just received a replacement gear drive head for my Echo SRM4000 strimmer/Brush cutter.
Please can someone inform me what this hole is shown in the photo, red .

Thanks and regards
Welsh Bloke

 

[StarTech]

I must be going blind as I see nothing as the Sargent from Hogan Heroes is always saying, just a red circle.

 

[welshbloke69]

I must be going blind as I see nothing as the Sargent from Hogan Heroes is always saying, just a red circle.

Thanks Start Tech......picture now uploaded.

 

[StarTech]

That is usually where you insert a rod of the correct size to lock the gearbox for trimmer head removal and installation.