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TOOL OPERATIONCHECK
CAUTION: Remove all fasteners from tool beforeperforming tool operation check.

1.CONTACTTRIP OPERATION:

A.With finger off the trigger, press the contact trip against the work surface.
THETOOL MUST NOTCYCLE.
B.Hold the tool off the work surface, and pull the trigger.
THETOOL MUST NOTCYCLE.
C.With the tool off the work surface, pull the trigger. Press the contact trip against the work surface.
THETOOL MUST CYCLE.
D.Without touching the trigger, press the contact trip against the work surface,
thenpull the trigger.
THETOOL MUST CYCLE.

2. SEQUENTIAL TRIP OPERATION:

A.Press the contact trip against the work surface, without touching the trigger.
THETOOL MUST NOTCYCLE.
B.Hold the tool off the work surface and pull the trigger.
THETOOL MUST NOTCYCLE.
Releasethe trigger. The trigger must return to the trigger stop on the frame.
C.Pull the trigger and press the contact trip against the work surface.
THETOOL MUST NOTCYCLE.
D.With finger off the trigger, press the contact trip against the work surface. Pull the trigger.
THETOOL MUST CYCLE.
MAINTAININGTHE PNEUMATICTOOL
Whenworking on air tools, note the warnings in this manual and use extra careevaluating
problemtools.
CAUTION: Pusher spring (constantforce spring). Cautionmust be used when working with the spring
assembly.Thespring is wrapped around, but notattached to, a roller. If the spring is extended beyond
its length,the end will come off the roller and the spring will roll up with a snap,with a chance of
pinchingyour hand. Also the edgesof the spring are very thin and could cut. Caremust also be taken
toinsure no permanent kinks areput in the spring as this will reduce the springs force.

REPLACEMENT PARTS:

Useonly genuine BOSTITCH replacement parts. Do not use modified parts.

ASSEMBLYPROCEDURE FOR SEALS:

When repairing a tool, make sure the internal parts are clean and lubricated. Use Parker “O”-LUBE,
Magnalube,or equivalent on all “O”-rings. Coat each “O”-ring with lubricant before assembling.

AIR SUPPLY-PRESSUREANDVOLUME:

Airvolume is as important as air pressure. The air volume supplied to the tool may be inadequate because of
undersizefittings and hoses, or from the effects of dirt and water in the system. Restricted air flow will prevent
thetool from receiving an adequate volume of air, even though the pressure reading is high. The results will
beslow operation, misfeeds or reduced driving power. Before evaluating tool problems for these symptoms,
tracethe air supply from the tool to the supply source for restrictive connectors, low points containing water
andanything else that would prevent full volume flow of air to the tool.