Husqvarna 236 tensioning screw.

[Robbywaen]

I am at wits end. My chain tensioning screw keeps popping up at the opposite end to the screw head thus causing the chain to come off. 

All there is to the screw kit is the screw, and the part that comes through the casing and a horseshoe shape rubber. No bearing at other end. 

[peatff]

I don't understand this, can you show what you mean as your explanation is not making sense. Has the circlip come off the screw or something ? You can get the whole mechanism for about £5 on ebay.

[adw]

The tensioner is there just to tension the chain, the nuts secure the bar, if you have no aligned the pawl with the hole in the bar you will push the pawl through the cover, i saw a company on e bay offering a repair plate to rectify that, if this is the tooless brake you need to convert to the standard brake with two bar nuts as this brake is a disaster.