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Air Gun Home Forum Index » Pistols » Marksman 2004-P17 Question??    View previous topic :: View next topic  Marksman 2004-P17 Question??   Posted: Fri Jan 23, 2009 8:08 am BBGun Bob Veteran Member Joined: 29 Oct 2007 Posts: 474 Location: Michigan I have read Cw's and Slavia report's on the work done to this pistol. Yesterday I acquired one that will not fire after it is cocked. I do not think nothing is striking the valve to open it. I see where I should check the valve nut to see if it came loose. But before I take the right pistol grip completely off do you have any warnings suggestions I might look out for?? Such as flying springs,or other parts.Will the trigger group stay with the pistol? or will some parts come with the right grip? I took the screw out and peeked in there to see what I had to deal with.I was afraid to go any further until I get a little help form someone who has opened one of these up. Also what is the allen screw in the trigger blade for?? And is the action/pump assembly attached to the trigger group somehow? I have removed the drift pins to remove the piston/pump assembly and it will not come out the top,something is holding it in the rear??? Thanks for any help before I have a mess on my hands (AGAIN LOL) BBGun Bob SE Mich. _________________ Air Guns Create Many Questions ! ! Together We Can Answer Them ! !   Posted: Fri Jan 23, 2009 12:12 pm cw Banned Joined: 10 Feb 2008 Posts: 1771 You need to remove the right side handgrip and remove the trigger group. The valve stem pull nut is hanging up on the hammer. Once you remove the trigger group, the cylinder should come out easy. Once the cylinder is out, the safety can be easily pulled out for modification if desired. Hope that this helps. Reassembling the P17 trigger group can be rather frustrating at best.   Posted: Fri Jan 23, 2009 12:15 pm cw Banned Joined: 10 Feb 2008 Posts: 1771 If your pistol will not fire, the most likely cause is that said nut has become loose or come completely off of the valve stem. If the nut is not on the valve stem far enough or missing, the hammer has no way of pulling the valve open. I've had three come in with this problem. The screw in the trigger adjusts the trigger travel so that the sear breaks right at the second stage. On some of these the sear will break well into the second stage (second stage creep). In that case the edge of the hammer sear can be filed down to move the sear's breaking point closer to the very begining of the second stage.   Posted: Fri Jan 23, 2009 1:45 pm BBGun Bob Veteran Member Joined: 29 Oct 2007 Posts: 474 Location: Michigan Thanks a ton CW, and the pictures are just what this old man needed! Now I'll start,I know it can not be as bad as a RWS P-5 trigger,that sucker is a mind fuch. BBGun Bob _________________ Air Guns Create Many Questions ! ! Together We Can Answer Them ! !   Posted: Fri Jan 23, 2009 1:48 pm cw Banned Joined: 10 Feb 2008 Posts: 1771 No problem, have fun. Per CW's help it shoots again!!!   Posted: Fri Jan 23, 2009 10:05 pm BBGun Bob Veteran Member Joined: 29 Oct 2007 Posts: 474 Location: Michigan cw wrote: No problem, have fun. C-dub , I opened her up with care while peeping thru the grip crack as I gently pried it open making sure everything stayed in place.Once opened just like you said the valve nut had backed its self damn near all the way off the stem. While open I gave it a very nice trigger job with stone and 600 wet sand paper & moly.I left the safety alone I kinda like auto safety's,once you get used to them there OK in my book. Once I put her back together I had to shoot it.I went out to the garage and grabbed my Chrony and small duct seal filled trap.I tried some Walmart Crosman 7.9gr wadcutters,a 10 shot string reveled 430,427,415,424 427,420,421,416,427,428 thats some amazingly close numbers for a cheap gun.I'm going to have to call the guy I got from and ask what has been done to the valve ,I know it came from a pro tuner.Does the xtra weight glued pellets) in your grip help balance yours a little??Tomorrow I plan to put a red dot on it,but with open sights I was shooting 20 foot dime sized groups.I can't go much further in the house,I'm afraid that silly Morning Dove I have as a pet will come flying into my line of sight. Thanks again for your quick response and help.I owe you one!! BBGun Bob SE Mich. All done and shooting like a champ! _________________ Air Guns Create Many Questions ! ! Together We Can Answer Them ! !   Posted: Sat Jan 24, 2009 3:41 pm Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Quote: Does the xtra weight glued pellets) in your grip help balance yours a little?? Yes, it does - especially with the added weight of the BSA red dot up front. If you've read the earlier posts, then you know to de-burr the air entry hole in the side of the cylinder. That's probably the only "defect" that needs to be cured. On the plus side, all the seals in the gun are "O" rings that can be found at an automotive parts place. Hope you enjoy it as much as I have. _________________ ¡Listo! ¡Apunte! ¡Fuego! Not a BSA but a Leapers is that OK? added a laser   Posted: Sat Jan 24, 2009 10:46 pm BBGun Bob Veteran Member Joined: 29 Oct 2007 Posts: 474 Location: Michigan Slavia, I not only added a 2x red dot but added a laser,this little booger is a bad azz. take a look! BBGun Bob Marksman 2004 [With Red dot & laser] with out laser at 20 feet indoors its a a little bas azz showing 415-420 on chrony _________________ Air Guns Create Many Questions ! ! Together We Can Answer Them ! !   Posted: Sun Jan 25, 2009 12:52 am Slavia Moderator Joined: 31 Mar 2008 Posts: 4382 Location: Waseca, Minnesota, USA Very nice! I am constantly amazed how well it performs for a cheap gun with a questionable family name. _________________ ¡Listo! ¡Apunte! ¡Fuego! 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