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ten-ring
 Post subject: Crosman M4-177 pumper
PostPosted: Fri May 28, 2021 2:46 pm 
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Joined: Fri Jun 08, 2007 8:45 pm
Posts: 892
Location: Toronto
I have been using one for 3 years and have just started to test a new spare I have had for 2 years. The new M4 has been cleaned and pump cup lightly oiled but much harder to pump 4-5 pumps than the older one. I can't remember if the older was this hard . I don't want to try disassembly .
Will pumping get easier? It has had 125 shots so far.
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Dukemeister
PostPosted: Fri May 28, 2021 4:07 pm 
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Joined: Fri Jan 22, 2010 1:17 pm
Posts: 4167
Location: Kingston, ON
I can see no mechanical reason pumping would become easier with time other than it not sealing properly.
But I can tell you from experience, the older I get the harder it is to pump everything. :roll:

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cdnairgunner
PostPosted: Tue Jun 01, 2021 1:31 pm 
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Joined: Fri Feb 17, 2012 12:44 pm
Posts: 602
Location: Southern Ontario
Dukemeister wrote:
But I can tell you from experience, the older I get the harder it is to pump everything. :roll:


Amen to that brother.
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ten-ring
PostPosted: Tue Jun 08, 2021 2:24 pm 
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Joined: Fri Jun 08, 2007 8:45 pm
Posts: 892
Location: Toronto
ten-ring wrote:
I have been using one for 3 years and have just started to test a new spare I have had for 2 years. The new M4 has been cleaned and pump cup lightly oiled but much harder to pump 4-5 pumps than the older one. I can't remember if the older was this hard . I don't want to try disassembly .
Will pumping get easier? It has had 125 shots so far.


I know that too much lube/oil is not advised but added a few more drops of pellgun oil over a week on the new M4 which had sat NIB for 2 years.
Pumping effort much less now although not quite as smooth as my older one.
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