Remington r300 - Manual (Page 14)

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489.004
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489.004
2. Grasp muzzle and slide barrel forward rapidly until it stops.
This sets piston into firing position and opens the chamber.
4. Select the proper Remington ® Power Load (see Application
Chart on pages 0 and 1) and insert into the chamber until
it stops. nOtE: Failure to start with the lowest power level
can result in overdrive condition and will result in damage
to the tool (see page 13).
3. Insert power fastener into muzzle of tool, head end first.
Push the power fastener until point is even with end of tool.
aLWaYS load the power fastener first, then the power load.
Operation
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1. aLWaYS place safety ON/OFF switch in the SAFETY ON
position before inserting power fastener and power load.
Safety On