650S4 Bostitch Nailer - Overview

Sections of the 650S4

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Keep searches simple, eg. "belt" or "pump".
Cover,Contact Arm – Part Number: 103871
Cover,Contact Arm
PartSelect #: PS10245716
Manufacturer #: 103871
  No Longer Available
Label, Trip Adj. – Part Number: 851934
Label, Trip Adj.
PartSelect #: PS10247438
Manufacturer #: 851934
  No Longer Available
O-Ring,1.739X.070 – Part Number: 851483
O-Ring,1.739X.070
PartSelect #: PS10247413
Manufacturer #: 851483
  No Longer Available
Rocker,Trigger – Part Number: T55092
Rocker,Trigger
PartSelect #: PS10250955
Manufacturer #: T55092
  No Longer Available
Kit,Trigger Valve-Speed – Part Number: STV2
Kit,Trigger Valve-Speed
PartSelect #: PS10250785
Manufacturer #: STV2
  No Longer Available
DISC-LATCH STOP – Part Number: 103795
DISC-LATCH STOP
PartSelect #: PS12412062
Manufacturer #: 103795
  No Longer Available
Assembly,Trigger – Part Number: 100607
Assembly,Trigger
PartSelect #: PS10245509
Manufacturer #: 100607
  No Longer Available
Spring,Head Valve – Part Number: 103767
Spring,Head Valve
PartSelect #: PS10245675
Manufacturer #: 103767
This genuine OEM sourced hardware is specially made for use with Bostitch pneumatic staplers. It is an identical replacement for a missing or a faulty spring that was installed on a new unit. The purp...
  No Longer Available
Guide,Driver,50S4 – Part Number: 103805
Guide,Driver,50S4
PartSelect #: PS10245690
Manufacturer #: 103805
  No Longer Available
Spring,Torsion – Part Number: 103839
Spring,Torsion
PartSelect #: PS10245705
Manufacturer #: 103839
  No Longer Available
Cap,Magazine End – Part Number: 103786
Cap,Magazine End
PartSelect #: PS10245681
Manufacturer #: 103786
  No Longer Available
Arm,Lower Contact – Part Number: 103793
Arm,Lower Contact
PartSelect #: PS10245684
Manufacturer #: 103793
It is an authentic OEM sourced item that is specially made for use with Bostitch pneumatic staplers. This part provides an identical replacement for a missing or a faulty lower contact arm that was in...
  No Longer Available

Questions And Answers for 650S4

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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
would not fire nails
remove 2 Philips head screws, drive out drift pins with drill bit. Remove TVA6 replace with new TVA6 making sure TVA6 is completely seated and slots are aligned with drift pin holes! Drive in drift pins. Replace trigger and screws.
This did not solve the problem as suggested by Parts select.
Replaced Head Valve Seal...Problem resolved
Parts Used:
KIT-TRIGGER VALVE
  • Richard from Bogalusa, LA
  • Difficulty Level:
    A Bit Difficult
  • Total Repair Time:
    30 - 60 mins
  • Tools:
    Pliers, Screw drivers
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