Daisy Powerline 717, 747, 777 Reseal O-Ring Kit
Revive your Daisy Powerline 717, 747, or 777 air pistol with this comprehensive reseal kit! Designed specifically for these models, each kit contains all the essential O-rings needed for two complete valve and piston pump rebuilds. Made in the USA from durable Buna 70 Nitrile rubber, these black O-rings ensure a reliable seal.
Kit Contents (Total of 5 O-Rings):
(1) Pump Seals (O-Ring)
Bolt/Probe Seals (O-Ring)
(1) Stem Seals (O-Ring)
(1) Large Outer Valve Seals (O-Ring)
(1) Inner Valve Seals (O-Ring)
(1) Bolt/Probe Seals (O-Ring)
Features:
Enough O-rings for full reseals, keeping your pistol ready for action.
Does not include oil wiper (sold separately if needed).
Always in stock—no delays!
Shipping:
Ships via USPS First Class Mail without tracking, USA only.
Thank you for choosing this kit to bring your Daisy Powerline back to peak performance!
Instructions: How to Replace the Daisy Powerline 717, 747, 777 Seal Repair O-Ring Kit
Tools Needed:
Small Phillips and flathead screwdrivers
Tweezers or small needle-nose pliers
Light lubricant (e.g., silicone oil or pellgun oil, non-petroleum-based)
Clean cloth or rag
Replacement O-ring kit for Daisy Powerline 717, 747, 777
Steps:
Safety First:
Ensure the pistol is unloaded and not pressurized. Remove any CO2 cartridge or discharge any remaining air by dry-firing in a safe direction.
Disassemble the Pistol:
Remove the grips by unscrewing the grip screws (usually Phillips head) on both sides of the handle.
Locate and remove the screws holding the main body halves together (typically 2-4 screws, depending on the model). Gently separate the halves, keeping track of screw locations.
Carefully lift out the valve assembly, pump piston, and bolt/probe assembly. Note their orientation for reassembly.
Remove Old O-Rings:
Using tweezers or a small flathead screwdriver, carefully remove the old O-rings from the following locations:
Pump Seal: On the piston head in the pump tube.
Large Outer Valve Seal: Around the exterior of the valve body.
Inner Valve Seal: Inside the valve assembly where the valve stem sits.
Stem Seal: On the valve stem at the base of the valve.
Bolt/Probe Seal: Around the bolt or probe that seals the breech.
Clean each area with a cloth to remove debris or old lubricant.
Install New O-Rings:
Lightly lubricate each new O-ring with silicone oil to ease installation and ensure a good seal.
Place the new O-rings in their respective locations:
Pump Seal: Stretch onto the piston head groove.
Large Outer Valve Seal: Fit around the valve body exterior.
Inner Valve Seal: Insert into the valve assembly interior.
Stem Seal: Slide onto the valve stem base.
Bolt/Probe Seal: Match the correct size (use the one that fits snugly) and install on the bolt/probe.
Test fitment—O-rings should sit snugly without excessive stretching or looseness.
Reassemble the Pistol:
Reinstall the valve assembly, pump piston, and bolt/probe into their original positions within one half of the pistol body.
Carefully align and close the body halves, ensuring no wires or components are pinched.
Secure the screws, starting with a light tighten and then fully tightening in a cross pattern.
Reattach the grips and tighten the grip screws.
Test the Repair:
Pump the pistol (for 717) or insert a CO2 cartridge (for 747/777) and test for leaks by listening for hissing or applying soapy water to joints (bubbles indicate leaks).
Fire a few test shots to ensure proper operation and sealing.
Final Adjustments:
If leaks persist, disassemble and check O-ring placement or try a different-sized bolt O-ring (if multiple sizes are provided). Re-lubricate if needed.
Tips:
Work in a clean, well-lit area and keep small parts organized.
Avoid over-tightening screws to prevent stripping threads.
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