5Pack 530047721 Primer Bulb Replacement for Ryobi 280r (41FR280G034) Handheld Blower Compatible with part numbers 12318139130, 300780002, 1885121 purge bulb Product overview This 5pack of primer bulbs is a direct replacement for part number 530047721 and is designed for use with Ryobi 280r (41FR280G034) handheld blowers and other compatible models listed above. Each bulb restores the fuel priming function that helps start twostroke engines reliably. Key benefits Restores reliable priming: Replaces worn or cracked bulbs to reestablish proper fuel flow for easier starting. Convenient multipack: Five bulbs provide immediate spares for multiple repairs or seasonal maintenance. Direct replacement fit: OEMequivalent size and shape for a straightforward swap without modifications. Durable flexible material: Made from flexible rubber material to withstand repeated use and fuel exposure. Cost effective maintenance: Quick replacement that can avoid downtime and keep equipment working. What it does Primes the carburetor by drawing fuel from the tank into the engine intake when squeezed. Seals against air leaks that can prevent the engine from starting or cause hard starting. Functions as a purge bulb to remove air from fuel lines on compatible handheld blowers. Compatibility and specifications Part number: 530047721 Compatible models: Ryobi 280r (41FR280G034) handheld blower Compatible replacement part numbers: 12318139130, 300780002, 1885121 purge bulb Quantity: 5 primer bulbs per pack Material: Flexible fuelresistant rubber Fit: OEMequivalent size for direct replacement on listed models Installation and performance notes Simple replacement: Typically installs in minutes using basic hand tools or a pushfit method depending on model. Inspect fuel lines and clamps while replacing the bulb to ensure a complete seal and performance. Replacing a damaged bulb often improves starting consistency and reduces choke or flooding issues. Practical use scenarios 1) Seasonal tuneup: old primer bulbs on a handheld blower before the busy season to avoid starting problems when you need the tool. 2) Field : Keep a spare bulb on hand during yard work to quickly fix a cracked or hardened bulb and continue working with minimal interruption. 3) Equipment maintenance for rental fleets: Stock multiple bulbs to maintain several blowers and reduce downtime between rentals. What is included Five primer bulbs, part number 530047721, compatible with the models and part numbers listed above. Notes Intended as a replacement part for the specified models and part numbers only. Verify part compatibility with your equipment model before .