{"product_id":"yamatic-pressure-washer-pump-3400-psi-2-5-gpm-horizontal-3-4-shaft-stainless-pistons","title":"YAMATIC Pressure Washer Pump 3400 PSI 2.5 GPM — Horizontal 3\/4\" Shaft, Stainless Pistons","description":"\u003cp\u003e\u003cstrong\u003eThe YAMATIC Horizontal 3\/4\" Shaft Pressure Washer Pump delivers up to 3400 PSI at 2.5 GPM as a direct, easy-to-install replacement for many small gas-powered washers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis horizontal-mount pump is built to revive a worn power washer without the expense of replacing the whole unit. Designed for small horizontal engines with a 3\/4\" keyed shaft, the unit includes stainless-steel pistons, an integrated adjustable unloader, and a thermal relief valve to protect the pump during bypass operation. It comes pre-filled with oil and uses a familiar SAE bolt pattern to fit many popular consumer brands.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and models will this pump fit?\u003c\/h3\u003e\n\u003cp\u003eThis pump follows a USA standard horizontal mounting pattern and works with many 180–225 cc (roughly 6.5–7 hp) small engines. It’s intended for pumps with a 3\/4\" keyed shaft and the same inlet\/outlet orientation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with Honda GC190 and GC160 (3\/4\" keyway) and GX160 equivalents.\u003c\/li\u003e\n  \u003cli\u003eReplaces select Simpson part numbers (MSH3125, MS60753, MS60788, MS60850, MS60799, MS61043).\u003c\/li\u003e\n  \u003cli\u003eWorks with Homelite models and Karcher G3050OH, K2400HH, G2400HH lines where orientations match.\u003c\/li\u003e\n  \u003cli\u003eNot compatible with 7\/8\" shafts, SRMW footprints, or units with shrouds blocking the mount.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the pump protect itself and extend service life?\u003c\/h3\u003e\n\u003cp\u003eThe pump uses a double-seal design, stainless steel pistons, and an integrated thermal relief valve (TRV) to reduce wear and protect components during bypass. These features together target a longer working life compared with many original-equipment consumer pumps.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStainless-steel pistons increase seal durability and reduce wear.\u003c\/li\u003e\n  \u003cli\u003eDouble-seal and upgraded bearings lower leak and failure risk.\u003c\/li\u003e\n  \u003cli\u003eThermal relief valve prevents overheating during extended bypass operation.\u003c\/li\u003e\n  \u003cli\u003eEstimated service life up to about 150 hours under typical consumer use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat adjustment and maintenance controls are available?\u003c\/h3\u003e\n\u003cp\u003eThe pump includes an adjustable unloader valve allowing you to fine-tune pressure to match your engine’s capabilities and cleaning needs. It ships pre-filled with oil and features an easy-start design, but routine maintenance still improves longevity.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable unloader lets you raise or lower operating pressure safely.\u003c\/li\u003e\n  \u003cli\u003ePre-filled oil—no initial oil change required before first run.\u003c\/li\u003e\n  \u003cli\u003eRecommend draining water and using pump protectant before long storage.\u003c\/li\u003e\n  \u003cli\u003eEasy-start structure eases pull-start effort on cold or tired engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: If your gas pressure washer has a horizontal engine with a 3\/4\" keyed shaft and the same mounting orientation, this YAMATIC pump is a cost-effective upgrade to restore high pressure and flow. It’s intended for homeowners, rental shops, and small contractors who want to replace a failed pump on popular consumer models (Honda, Simpson, Homelite, Karcher, Troy-Bilt and similar). Always confirm shaft size, bolt pattern, and inlet\/outlet alignment before purchasing to ensure correct fit.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this pump compatible with a Honda GC190 engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—compatible when your GC190 has a 3\/4\" keyed shaft and matching inlet\/outlet orientation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the pump arrive with oil already filled?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—the pump is pre-filled with oil, so no initial oil change is required before first use.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YAMATIC","offers":[{"title":"Default Title","offer_id":56835430580564,"sku":"B07KMY34ZZ","price":114.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/yamatic-front-view-pump.jpg?v=1787056629","url":"https:\/\/gardenluxe.co.uk\/products\/yamatic-pressure-washer-pump-3400-psi-2-5-gpm-horizontal-3-4-shaft-stainless-pistons","provider":"Gardenluxe Uk","version":"1.0","type":"link"}