TROUBLESHOOTING GUIDE
MANY COMMON PROBLEMS CAN BE SOLVED EASILY BY UTILIZING THE
CHART BELOW. FOR MORE SERIOUS OR PERSISTENT PROBLEMS, CONTACT
A BOSTITCH SERVICE CENTER OR CALL 1-800-556-6696. IN CANADA PLEASE
CALL 1-800-567-7705 OR VISIT www.BOSTITCH.com.
To reduce the risk of serious personal injury, ALWAYS
disconnect air from tool and engage trigger lock, before all repairs.
SYMPTOM
Air leak near top of
tool or in trigger area
Tool does nothing or
operates sluggishly
Air leak near
bottom of tool
Tool jams frequently
Other
Height (inch/mm)
Width (inch/mm)
Length (inch/mm)
Weight (lbs/kg)
Recommended Operating Pressure
Air Consumption per 100 cycles
Loading capacity
PROBLEMS
Loose screws.
Worn or damaged
o-rings or seals.
Inadequate air supply.
Inadequate lubrication.
Worn or damaged
o-rings or seals.
Loose screws.
Worn or damaged
o-rings or bumper.
Incorrect fasteners.
Damaged fasteners.
Bent collation wire.
Canister or nose
screws loose
Canister is dirty.
Driver tip is worn
or damaged.
TOOL SPECIFICATIONS
– 16 –
SOLUTIONS
Tighten screws.
Install Overhaul Kit.
Verify adequate air supply.
Put 5 or 7 drops of
oil into air inlet.
Install Overhaul Kit.
Tighten screws.
Install Overhaul Kit.
Verify approved fasteners
of correct size and
22° collation angle.
Replace with undamaged
fasteners.
Tighten screws.
Clean magazine.
Install Driver
Maintenance Kit.
Contact a BOSTITCH
Authorized Warranty
Service Center
BFN21PL
14.76/375
4.72/120
21.65/550
8.25/3.74
70-120 psi (4.8 to 8.3 bar)
9.74 CFM
60 nails