850S4 (Type 0) Bostitch Nailer - Overview

Sections of the 850S4

[Viewing 1 of 1]
Page A Diagram and Parts List for Type 0 Bostitch Nailer
Page A
Keep searches simple, eg. "belt" or "pump".
Label, Trip Adj. – Part Number: 851934
Label, Trip Adj.
PartSelect #: PS10247438
Manufacturer #: 851934
  No Longer Available
DISC-LATCH STOP – Part Number: 103795
DISC-LATCH STOP
PartSelect #: PS12412062
Manufacturer #: 103795
  No Longer Available
Rocker,Trigger – Part Number: T55092
Rocker,Trigger
PartSelect #: PS10250955
Manufacturer #: T55092
  No Longer Available
Kit-Rebuild 850/863 – Part Number: RBK18
Kit-Rebuild 850/863
PartSelect #: PS10250592
Manufacturer #: RBK18
  No Longer Available
Kit,Trigger Valve-Speed – Part Number: STV2
Kit,Trigger Valve-Speed
PartSelect #: PS10250785
Manufacturer #: STV2
  No Longer Available
SCREW-SHCS-M5X0.80X2 – Part Number: MSC5080-25
SCREW-SHCS-M5X0.80X2
PartSelect #: PS12528976
Manufacturer #: MSC5080-25
$5.95
  Special Order
NUT-NYLON M3X.50 – Part Number: MHE3050-100
NUT-NYLON M3X.50
PartSelect #: PS12521246
Manufacturer #: MHE3050-100
This lock nut is sourced from original equipment manufacturer for use with Bostitch nailers and staplers. It is a high quality hardware that has multiple applications depending on your tool. Please ma...
$5.95
  In Stock
Order within the next 6 hrs and your part ships today!
O-RING-1.638X.118 – Part Number: MRG041630
O-RING-1.638X.118
PartSelect #: PS12522430
Manufacturer #: MRG041630
This part is used in various Bostitch nailers and staplers. It is a genuine part made by original manufacturer. An O-ring is a flexible circle used to create a tight seal between rigid parts while pre...
$9.84
  In Stock
Order within the next 6 hrs and your part ships today!
KIT-TRIGGER VALVE – Part Number: TVA6
KIT-TRIGGER VALVE
PartSelect #: PS12531525
Manufacturer #: TVA6
Restore your tool’s performance with this complete trigger valve repair kit for brad nailers and staplers. If your tool is leaking air or frequently misfiring, replacing the trigger valve may solve th...
$70.33
  In Stock
Order within the next 6 hrs and your part ships today!
Assembly,Trigger – Part Number: 100607
Assembly,Trigger
PartSelect #: PS10245509
Manufacturer #: 100607
  No Longer Available
Cap,Magazine End – Part Number: 103786
Cap,Magazine End
PartSelect #: PS10245681
Manufacturer #: 103786
  No Longer Available
Seal,Cap – Part Number: 103802
Seal,Cap
PartSelect #: PS10245688
Manufacturer #: 103802
  No Longer Available
Back to Top
View More

Questions And Answers for 850S4

Be the first to ask our experts a question about this model!

Back to Top
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
6 of 11 people found this instruction helpful.
Was this instruction helpful to you?
Thank you for voting!
Back to Top
View More