I just got an FWB601 (EBAY). Arrived in great shape, and I was excited. I figured I would give it a few test rounds. First 2 rounds went off without a hitch. Next 2 seemed like they were lacking power and impacted low. I noticed a puff of air upon re-cocking. I inserted a cleaning pellet just in case it does build air and fire. Now when pointing in a safe direction I pull the trigger it just clicks, but does not release air. At this point continued re-cocking puffs out air. My question is... If it doesn't release air and it is the exhaust valve oring how would I depressurize the rifle to replace it? This may be beyond me at this point. My options would be return to seller (they have a return policy), send to a pro to be fixed, or attempt it myself. Does anybody have any recent experience with this situation?
FWB NEW FWB601 Valve Seal Issue?
- Thread starter sherbert409
- Start date
The 601 is a SSP rifle .only when the pump handle is extended fully does it suck in air . try pumping slowly and see if it catches ?
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Is it puffing air out of the barrel when you recock it?
Nvm, will watch your vid when it posts
Nvm, will watch your vid when it posts
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Hard to tell from the video.
The #1 most common failure point for those 600 series FWB rifles is the firing valve seal. If the seal has failed, and it hisses air when you cock it, the valve will have no pressure in it.
The #1 most common failure point for those 600 series FWB rifles is the firing valve seal. If the seal has failed, and it hisses air when you cock it, the valve will have no pressure in it.
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So the puff, is on the upstroke as the cylinder comes up. Its almost like trapped air is coming out. When you press the release button the lever short of jumps up, like there is still pressure in it that has not been released. The trigger does nothing other than make a click sound. It sort of sounds like strumming a tight rubber band than a click if that makes sense.
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No air is exiting the barrel during the cocking. Either on the up/downstroke. I think it is building/holding pressure. The trigger doesn't seem to be releasing it.
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Dis assemble the rifle to the point that you can access the channel that the hammer rides in. Remove the hammer assembly, and using a punch or dowel, give the valve stem a tap with a mallet to see if it unseats the valve.
Have the muzzle down on the floor like in your video.
This will release the air if there is any present, then proceed with a rebuild of the valve.
It is not hard and seals are available, if you are so inclined.
Have the muzzle down on the floor like in your video.
This will release the air if there is any present, then proceed with a rebuild of the valve.
It is not hard and seals are available, if you are so inclined.
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In fact, slowly letting the cocking arm come up after unlatching but not raising it to the top of its stroke seems to depressurize it, and de-cocks the trigger. It seems like it is being pressurized, but for some reason pulling the trigger won't release any air.
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It would appear that the exhaust and transfer seals are toast. The problem is that the only parts I could find are in Canada and the eBay seller no longer ships to the US.
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Correction, seller still ships to US but has temporarily put it on hold due to currently ongoing strike by Canada Post.
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Another fun fact... That may help those that follow. While disassembled I was curious if the charging piston was charging air. While covering the exhaust port with my thumb I was not able to get more than about 25% of the way through the return stroke without air being forced past my thumb. While not conclusive it is probably a good sign that pressure is being built, just no retained by the exhaust valve seal.
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i have steadfast rule
if you open them up ALL the soft parts get replaced
it makes no sense doing have a job
now parts are hard to get now and in the near future
here is FWB parts diagram page
https://www.feinwerkbau.de/en/service/downloads/technical-information/exploded-drawings
some parts as in Orings could be sourced if the sizes are known
here is Waffencenter Gotha it will give you what the parts should be priced and picture but i understand the shipping and add on cost have soared past the moon but the part number are there
all UK and German companies are charging outrageous prices for shipping and that leaves the unknowns of the cost once it gets to the states
https://www.waffencenter-gotha.de/shop/FEINWERKBAU:.:19.html?filter_id=1841
a reminders to all buying used guns
if you don't ask, when was it last rebuilt it is your fault and if you do and the answer is i don't know, then you should take that off the price, for the parts and labor even if you do it
i looked up the gun and the seller say it shoots great and yes it did for 2 shots
info and opinion and all i have
if you open them up ALL the soft parts get replaced
it makes no sense doing have a job
now parts are hard to get now and in the near future
here is FWB parts diagram page
https://www.feinwerkbau.de/en/service/downloads/technical-information/exploded-drawings
some parts as in Orings could be sourced if the sizes are known
here is Waffencenter Gotha it will give you what the parts should be priced and picture but i understand the shipping and add on cost have soared past the moon but the part number are there
all UK and German companies are charging outrageous prices for shipping and that leaves the unknowns of the cost once it gets to the states
https://www.waffencenter-gotha.de/shop/FEINWERKBAU:.:19.html?filter_id=1841
a reminders to all buying used guns
if you don't ask, when was it last rebuilt it is your fault and if you do and the answer is i don't know, then you should take that off the price, for the parts and labor even if you do it
i looked up the gun and the seller say it shoots great and yes it did for 2 shots
info and opinion and all i have
Upvote 0