Chauf Britony Flexiflame

[Agile]

I went to replace the diaphragm on one of these last week.

My mini adjustable spanner has been lost/stolen/mislaid and my 8 mm ring spanner is too loose to undo the two screws at the front with the worst access which are seriously too tight!

Has anyone found any tool which will fit closely and undo even the tightest screws on this model?

Tony

 

[Agile]

Even Chris doesn't seem to be able to suggest a suitable tool!