Here’s your go-to guide for manual oil pumps, and your reliable partner for hassle-free useWe specialize in the development and sales of manual oil pumps, from 200 ml portable models to 500 ml high-efficiency versions. Every pump is carefully selected to fit multiple scenarios (car transmissions, lawn mowers, gearboxes, etc.), with a focus on "easy operation + leak-free performance"—making fluid extraction and injection a breeze for DIY enthusiasts and mechanics alike.We believe: A good tool shouldn’t be complicated. That’s why our designs prioritize "ergonomics and durability," paired with clear instructions and thoughtful after-sales support—so you can use it with confidence and maintain it with ease.Whether for daily minor repairs or professional tasks, we’re here to simplify fluid transfer and make every job efficient.— Your trusted fluid transfer pump expert, ensuring smooth, leak-free extraction every time.How to Use1. PreparationChoose a hose of appropriate length, press the top self-locking device to insert the hose, and ensure all connections are tight.2. ExtractionInsert the hose into the liquid, then slowly pull the plunger to extract. Note: Wait for hot liquids to cool first.4. Temporary StorageKeep the pump upright after extraction; cover the hose with the cap to prevent leaks. Do not tilt, invert, or store liquid long-term.5. InjectionRemove the cap, align with the inlet, and slowly push the plunger to discharge liquid.Maintenance Tips· Cleaning:Rinse the pump body and hose with the corresponding liquid, then dry thoroughly before storage.· Pump Sticking:Caused by insufficient lubrication between the seal ring and pump body—apply lubricating oil to resolve.· Seal Ring Replacement:When sealing weakens, remove the plunger, replace the old ring with a spare, and reinstall.· Hose Shape Recovery:Soak in warm water for 5 minutes to restore its linear shape.· Corrosive Liquids:These may damage seals—clean the interior immediately after use.Customer SupportIf you’re not satisfied, contact us via email anytime. We guarantee a response within 24 hours and a satisfactory solution.