1. Sarrera
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your NuMax SFR3490 34-Degree 3-1/2" Pneumatic Clipped Head Framing Nailer. Please read and understand all instructions before using the tool. Proper use and maintenance will ensure optimal performance and extend the life of your nailer.

Image 1.1: The NuMax SFR3490 34-Degree 3-1/2" Pneumatic Clipped Head Framing Nailer.
The NuMax SFR3490 is designed for various construction applications, including framing, truss work, subfloors, sheathing, roof decking, furniture manufacturing, pallet and shipping crate assembly, and wood fencing. It features a durable design with an anti-dry-fire mechanism, dual-mode trigger, tool-free depth adjustment, and a no-mar safety tip.
2. Segurtasun informazioa
OHARRA: Segurtasun-jarraibide hauek ez betetzeak lesio pertsonal larriak edo ondasunen kalteak eragin ditzake.
- Always wear ANSI Z87.1 approved safety glasses with side shields when operating or maintaining the tool.
- Zaratak eragindako entzumen-galera saihesteko, entzumen-babesak erabili.
- Wear appropriate gloves for hand protection.
- Inoiz ez zuzendu tresna zure edo besteengana.
- Deskonektatu aire-hornidura doikuntzak egin aurretik, trabaketak garbitu aurretik, mantentze-lanak egin aurretik edo tresna erabiltzen ez denean.
- Ensure the workpiece is securely fastened before nailing.
- Ez erabili tresna hondatuta edo gaizki funtzionatzen badu.
- Mantendu eskuak eta gorputz-atalak isurketa-eremutik urrun.
- Aire konprimitu garbia, lehorra eta erregulatua soilik erabili gomendatutako presioan.
- Ez erabili oxigenoa, gas sukoiak edo botilako gasak energia-iturri gisa.
- Mantendu haurrak eta ingurukoak lan-eremutik urrun.
3. Osagaiak eta Ezaugarriak
The NuMax SFR3490 is engineered with several features to enhance performance and user experience:

Image 3.1: Key features of the NuMax SFR3490 Framing Nailer, including the adjustable exhaust, comfort grip handle, dual-mode trigger, anti-dry-fire mechanism, no-mar tip, adjustable depth, and durable aluminum body.
- Aluminiozko gorputz iraunkorra: Constructed for longevity and robust performance.
- Anti-Dry-Fire Mechanism: Prevents the tool from firing when the magazine is empty, protecting internal components and the workpiece.
- Dual Mode Trigger: Allows for easy switching between single sequential firing for precise nail placement and bump firing for rapid operation.
- Tresnarik gabeko sakonera doikuntza: A simple wheel adjustment allows for quick changes to nail driving depth without additional tools.
- Marrarik gabeko segurtasun aholkua: Designed to prevent damage to the work surface, ensuring clean results.
- Helduleku erosoa: Ergonomically designed to reduce user fatigue during extended use.
- 360 Degree Adjustable Exhaust: Directs air away from the user's face and work area for improved comfort.
- One-Piece Hardened Steel Drive Blade: Iraunkortasuna eta errendimendu koherentea bermatzen ditu.
4. Konfigurazioa
4.1 Aire-horniduraren konexioa
- Ensure the air compressor is off and the air hose is disconnected from the compressor.
- Apply a few drops of pneumatic tool oil into the air inlet of the nailer.
- Connect the air hose to the tool's air inlet. Ensure a secure connection.
- Set the air compressor pressure to the recommended operating range (70-115 PSI). Do not exceed 120 PSI.

Image 4.1: The air inlet connection point on the NuMax SFR3490.
4.2 Iltzeak kargatzea
The SFR3490 uses 34-degree paper collated clipped head framing nails, ranging from 2" to 3-1/2" in length and 0.113" to 0.131" in diameter.

Image 4.2: Compatible nail specifications for the NuMax SFR3490, including smooth shank, ring shank, and screw shank nails from 2" to 3-1/2" in length.
- Ziurtatu aire-hornidura deskonektatuta dagoela.
- Bultzatzaile-multzoa atzera tiratu bere lekuan blokeatu arte.
- Insert a strip of nails into the magazine with the nail points facing down.
- Release the pusher assembly, allowing it to slide forward and engage the nail strip.
5. Funtzionamendu-argibideak
5.1 Gidatzearen sakonera doitzea
The tool-free depth adjustment allows you to control how deep the nail is driven into the material.
- Deskonektatu aire-hornidura.
- Locate the depth adjustment wheel near the nose of the tool.
- Turn the wheel clockwise to increase the driving depth (for deeper nails) or counter-clockwise to decrease the driving depth (for shallower nails).
- Proiektuan lanean hasi aurretik, probatu nahi duzun sakonera lortzeko material zati batean.

Image 5.1: The tool-free depth adjustment wheel and no-mar tip.
5.2 Tiro moduak
The SFR3490 features a dual-mode trigger for versatile operation:
- Jaurtiketa sekuentziala: For precise placement. Depress the safety contact element against the workpiece, then pull the trigger to fire a nail. Release both the trigger and the safety contact element before the next nail.
- Bump jaurtiketa: For rapid nailing. Hold the trigger, then depress the safety contact element against the workpiece to fire a nail. Lift the tool and repeat for subsequent nails.
CAUTION: Always be aware of the firing mode selected to prevent accidental discharge.
6. Mantentzea
Regular maintenance ensures the longevity and safe operation of your nailer.
- Eguneroko lubrifikazioa: Apply 5-10 drops of pneumatic tool oil into the air inlet before each use. Do not use detergent oil or automotive oil.
- Garbiketa: Keep the tool clean and free of debris. Wipe down the exterior with a clean cloth. Do not use harsh solvents.
- Aire-iragazkia: Aire-iragazkia aldian-aldian egiaztatu eta garbitu (hala badagokio) aire-fluxu egokia bermatzeko.
- Lotura-bidea: Inspect the magazine and nose for any obstructions or bent nails. Clear any jams immediately after disconnecting the air supply.
- Biltegiratzea: When not in use, disconnect the air supply, drain the air compressor, and store the tool in a dry, secure location away from children.
7. Arazoak
Ikusi beheko taula arazo ohikoenak eta haien irtenbideak ikusteko.
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Tresnak ez du su egiten | No air supply; low air pressure; empty magazine; safety contact not fully depressed; trigger not pulled. | Connect air supply; increase air pressure (70-115 PSI); load nails; ensure safety contact is fully depressed; pull trigger. |
| Nails not driven flush | Low air pressure; depth adjustment set too shallow; incorrect nail length. | Increase air pressure; adjust depth setting deeper; use appropriate nail length. |
| Nails jam frequently | Bent or incorrect nails; damaged magazine; foreign debris in fastener path; worn driver blade. | Use correct, undamaged nails; clean magazine; clear debris; contact service for driver blade replacement. |
| Aire-ihesak | Loose fittings; worn O-rings or seals. | Tighten fittings; contact service for O-ring/seal replacement. |
8. Zehaztapenak
| Zehaztapena | Xehetasuna |
|---|---|
| Modelo zenbakia | SFR3490 |
| Iltze Mota | 34-Degree Paper Collated Clipped Head Framing Nails |
| Nail Length Range | 2" - 3-1/2" (50mm - 90mm) |
| Nail Diameter Range | 0.113" - 0.131" (2.87 mm - 3.33 mm) |
| Funtzionamendu-presioa | 70-115 PSI (4.8-7.9 bar) |
| Presio maximoa | 120 PSI (8.3 bar) |
| Elementuaren pisua | 8.8 kilo |
| Produktuaren neurriak | 20.3 x 5.6 x 13.7 hazbete |
| Energia iturria | Aire bidezkoa |
| Materiala | Heat-treated steel drive blade, Aluminum body |
9. Bermea eta Laguntza
The NuMax SFR3490 Framing Nailer is covered by a 1 Year Limited Tool Warranty eta a 30 eguneko pieza jantzigarrien bermeaBerme honek erabilera normalaren pean material eta fabrikazio akatsak estaltzen ditu.
For warranty claims, technical support, or to order replacement parts, please contact NuMax customer service. Keep your purchase receipt as proof of purchase for warranty validation.
Informazio gehigarrirako edo view other NuMax products, visit the official NuMax webgunea edo baimendutako txikizkariak.