lakeside1000 Posted May 7, 2014 Report Share Posted May 7, 2014 (edited) Hi all, anyone help, I recently acquired my slightly used Air Arms S400 .177 single shot rifle, I've used it a fair bit over the last few weeks and have noticed what in my mind is a fault, when you cock the bolt , drop in the pellet and close the bolt , the bolt itself seems very loose and on several occasions when lifting into the firing position I've just knocked the underside of the bolt which has moved it into the opening position, Twice I've not noticed this has happened and when the trigger is pulled the bolt blows back releasing the air into my face, not a pleasant sensation, Question is should the bolt have some sort of spring loading or latching position which would hold the bolt in place until slightly more force is applied to release. At the moment almost a breath of wind would lift the bolt. I should add there is no side play in the bolt and no air leakage when firing in the fully closed position. Any ideas please, many thanks for your time Edited May 7, 2014 by lakeside1000 Quote Link to comment Share on other sites More sharing options...
snarepeg Posted May 7, 2014 Report Share Posted May 7, 2014 Check that the bolt handle isn't loose, and its not locked down on the lug when the bolt is down, also your O ring on your bolt is there? Not a lot to go wrong on the air arms. John Quote Link to comment Share on other sites More sharing options...
Danny Fireblade Posted May 8, 2014 Report Share Posted May 8, 2014 For all things air arms its best to join the Air Arms owners club, just google it. Hours of fun reading through everything on there and if your rifle is a pre anti tamper one then you can easily and cheaply service it yourself by using the info on there, thats what i did. Quote Link to comment Share on other sites More sharing options...
bruno22rf Posted May 9, 2014 Report Share Posted May 9, 2014 I contacted Air Arms about this very matter about a year ago-I even designed a simple and cheap way of preventing the problem (if done during manufacture) using a spring loaded ball. Didn't even get the decency of a reply Quote Link to comment Share on other sites More sharing options...
David M Posted May 11, 2014 Report Share Posted May 11, 2014 (edited) Hi Lakeside1000, I have the exact same gun, pre anti tamper s400 and nothing holds the bolt down on mine either, just a little friction of the 'O' ring. Maybe that needs replacing on yours, mine certainly won't lift even if I hold the gun inverted but is easily moved by hand. I'm not 100% sure on this but I think if you fire the loaded gun with the bolt unlocked, the air vents backwards towards you and leaves the pellet in the gun. Don't think it's shot the pellet and load another..!! Re-cock the gun and safely fire it again. The Air Arms Owners Club is a very good informative site for advice, parts and info. Atb.......David....... Edited May 11, 2014 by David M Quote Link to comment Share on other sites More sharing options...
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