This high‑performance vacuum fuel pump is an ideal aftermarket replacement part designed for multiple small‑engine models, cross‑compatible with OEM part numbers 491922, 692313, 808656, 808492 and 691034. Built to match original equipment specifications, this vacuum‑driven fuel pump delivers steady and consistent fuel supply for 15‑25 HP small gasoline engines, widely applied in lawn mowers, riding garden tractors, lawn tractors, garden machinery, small generators and other outdoor power equipment. If your original fuel pump is worn out, cracked, leaking fuel or fails to deliver enough gasoline to the carburetor, this replacement fuel pump will be your cost‑effective solution to restore your machine’s normal working condition.
Different from electric fuel pumps, this unit adopts a mature vacuum‑driven operating principle. It relies on intake manifold vacuum pulse generated by the running engine instead of extra power supply. With the reciprocating movement of internal diaphragm and one‑way check valves, the fuel pump draws gasoline from the fuel tank and pushes fuel smoothly to the carburetor chamber. It can automatically adjust fuel delivery volume according to real‑time engine working status. The whole mechanical structure features simple construction, low failure rate and outstanding stability during long‑hour operation. It effectively prevents common troubles caused by insufficient fuel supply, such as hard starting, rough idling, engine stalling under load, power loss during acceleration and intermittent shutdown.
Manufactured with heavy‑duty hard engineering plastic housing, this vacuum fuel pump brings excellent comprehensive performance for outdoor harsh working environments. The pump shell resists impact, cracking, oil corrosion and aging from long‑time gasoline exposure. Precision‑made internal diaphragm and check valve components guarantee tight sealing without fuel leakage. All key components are strictly inspected before shipment to make sure every pump can work reliably under continuous vibration and temperature fluctuation of garden equipment. The mounting hole positions, outer dimension and 1/4‑inch fuel port fully follow OEM standards for direct fit installation. No modification, cutting or extra adapters are required during replacement.
This replacement fuel pump supports broad compatibility across mainstream engine brands. It fits Kawasaki FH series engines including FH381V, FH430V, FH451V, FH500V, FH531V, FH541V, FH580V, FH601V, FH680V and other FH‑series power units. Meanwhile it works perfectly for Briggs & Stratton single‑cylinder and V‑twin engines, as well as Kohler Command CH17, CH20, CH23, CH25, CV17, CV20, CV23, CV25 series engines. It is a practical repair component for riding lawn mowers, walk‑behind mowers, lawn tractors, utility tractors, small agricultural machinery and portable generators for home yard maintenance or professional landscaping work.
Installation can be completed easily by DIY users without professional repair experience. Please disconnect the spark plug wire before operation for safety purpose. Mark and record connection positions of fuel hoses and vacuum hoses before removing the old fuel pump. Take off the worn original pump, align the new fuel pump with mounting holes and fasten screws properly. Reconnect fuel inlet hose, fuel outlet hose and vacuum hose strictly following original routing. Double‑check all hose connections to avoid loose joints which may cause gasoline leaking. After finishing assembly, start your engine and test idle and acceleration status. Normally the whole replacement procedure takes only 15‑20 minutes.
Important usage reminders must be followed to extend service life of this fuel pump. This fuel pump is NOT compatible with fuel containing ethanol over 10%. High‑ethanol gasoline such as E15 or E85 will erode internal diaphragm and sealing parts and lead to premature damage. Never mix‑up vacuum hose and fuel hose during installation. Loose or miscon
Delivery & returns: ships from Australian warehouses, usually within 5–12 business days. A few very remote postcodes can’t be reached by our couriers — if yours is one, we’ll contact you before dispatch. Faulty or damaged items are covered under the Australian Consumer Law.
