Bostitch BT125 Operation And Maintenance Manual page 5

There are three available systems on BOSTITCH pneumatic tools. They are:
1. CONTACT TRIP OPERATION 2. SEQUENTIAL TRIP OPERATION 3. TRIGGER OPERATION
CONTACT TRIP:
The common operating procedure on "Contact Trip" tools is for the operator to contact the work to actuate the
trip mechanism while keeping the trigger pulled, thus driving a fastener each time the work is contacted. This
will allow rapid fastener placement on many jobs. All pneumatic tools are subject to recoil when driving
fasteners. The tool may bounce, releasing the trip, and if unintentionally allowed to recontact the work surface
with the trigger still actuated (finger still holding trigger pulled) an unwanted second fastener will be driven.
SEQUENTIAL TRIP:
The Sequential Trip requires the operator to hold the tool against the work before pulling the trigger. This
makes accurate fastener placement easier. The Sequential Trip allows exact fastener location without the
possibility of driving a second fastener on recoil, as described under "Contact Trip". The Sequential Trip Tool
has a positive safety advantage because it will not accidentally drive a fastener if the tool is contacted against
the work – or anything else – while the operator is holding the trigger pulled.
TRIGGER OPERATED:
The Trigger Operated model is cycled by actuation of the trigger only. This model does not have a Contact
Arm and is intended for use only where a Contact Arm CANNOT be used to satify the requirements of the
application. The Trigger Operated tool will cycle each time the trigger is actuated.
MODEL IDENTIFICATION:
Refer to Operation Instructions on page 9 before proceeding to use this tool.
CONTACT TRIP
Identified by:
BLACK TRIGGER
SEQUENTIAL TRIP
Identified by:
GRAY TRIGGER
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OPERATION
TRIGGER OPERATED
Identified by:
BLACK TRIGGER