SPECIFICATIONS Model GN420C Nail capacity 20 nails (2strips) 40 nails (4strips) Dimensions (L X W X H) 315 mm X 108 mm X 390 mm 430 mm X 108 mm X 390 mm Net weight 3.6 kg 3.8 kg Nail length X Shank diameter Nail L :15 mm - 40 mm d : 2.6 mm - 3.1 mm...
when loading and unloading, as the fasteners WARNING: The vibration emission during actual have sharp points which could cause injury. use of the power tool can differ from the declared 12. Always check the tool before use for broken, emission value depending on the ways in which the misconnected or worn parts.
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qualified health professional regarding overall operator. activities. Be careful with tools without workpiece con- tact as they can be fired unintentionally and The continuous use of the tool may cause repetitive strain injury due to recoil produced injure operator and/or bystander. by the tool.
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Make sure all safety systems are in working Additional safety instructions for gas tools order before operation. The tool must not oper- Use the tool only with the Makita genuine gas ate if only the trigger is pulled or if only the contact container.
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MISUSE or failure to follow the safety causing fires, personal injury and damage. It will rules stated in this instruction manual may cause also void the Makita warranty for the Makita tool and serious personal injury. charger. Tips for maintaining maximum...
FUNCTIONAL CAUTION: • Always insert the battery cartridge all the way DESCRIPTION until it locks in place. If not, it may accidentally fall out of the tool, causing injury to you or some- one around you. CAUTION: • Do not install the battery cartridge forcibly. If the •...
Insert the fuel cell directing the jet nozzle of the meter- ing valve toward the adaptor. Push in the front edge. Insert the jet nozzle into the small hole of the adapter properly. Push in the rear edge until it seats. Inserting the fuel cell Put the fuel cover over the metering valve and push it down to latch.
If fault detection is running ► 1. Button again, it is malfunction condition. Ask your local Makita service center to repair it. Insert a strip of nails into the slit in the rear of the mag- azine.
nails stop at the entrance of the magazine because of Driving nails the nail stopper. Unlock the magazine by pressing the button of the nail stopper to remove the nails. Changing the magazine (optional accessory) To drive a nail, place the contact element against the workpiece.
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Nail-driving of concrete Jammed nailer WARNING: WARNING: • Use hardened nails only for concrete. • Always be sure to remove the fuel cell and the Using other purposed nails may cause serious battery cartridge before clearing a jam. injuries. Do not nail directly on the concrete. Failure to do so may cause concrete fragments CAUTION: to fly off or nails to strike back, causing serious...
To maintain product SAFETY and RELIABILITY, repairs, tridge and nails before attempting to perform any other maintenance or adjustment should be per- inspection or maintenance. formed by Makita Authorized Service Centers, always • Never use gasoline, benzine, thinner, alcohol using Makita replacement parts.
CAUTION: • These accessories or attachments are recom- mended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.