{"product_id":"50mm-piston-and-seal-kit-fits-stihl-br800-br800c-br800x-zo-grwi-ew3j","title":"50mm Piston and Seal Kit Fits Stihl BR800 BR800C BR800X","description":"\u003cp\u003eA 50mm piston and seal kit that fits the Stihl BR800, BR800C, BR800X and BR800C-E backpack blowers. The kit contains a 50mm piston with ring set, wrist pin and circlips, gaskets and seals, and a feeler gauge for setting the valves; valves are not included. It replaces piston kit 4283-030-2003. The BR500, BR550, BR600 and BR700 take 4282-030-2003 and are not covered, so read the model on the frame plate before ordering. The engine is a four-stroke that runs on two-stroke fuel mix, with intake and exhaust valves, and the clearance drifts as the engine wears, so set it after assembly. A scored piston usually comes from dust past the air filter, an air leak at a crankshaft seal or the intake, or the wrong fuel mix: find the cause, pressure and vacuum test the crankcase, and use a ring compressor.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePISTON, GASKETS AND SEALS - A 50mm piston with ring set, wrist pin and circlips, the kit's gaskets and seals, and a feeler gauge for setting the valves. Valves are not included.\u003c\/li\u003e\n\u003cli\u003eFITS STIHL BR800, BR800C, BR800X AND BR800C-E - The backpack blowers with the 50mm bore. Not for the BR500, BR550, BR600 and BR700, which take piston 4282-030-2003, so read the model on the frame plate.\u003c\/li\u003e\n\u003cli\u003eREPLACES PISTON KIT 4283-030-2003 - Also written 4283 030 2003. The BR500 family number, 4282-030-2003, differs in the fourth digit and does not fit.\u003c\/li\u003e\n\u003cli\u003eTHIS ENGINE HAS VALVES - It is a four-stroke that runs on two-stroke fuel mix, with intake and exhaust valves. Valve clearance drifts as the engine wears, so set it with the feeler gauge after assembly; wrong clearance makes the blower hard to start.\u003c\/li\u003e\n\u003cli\u003eBEFORE IT GOES TOGETHER - Find out why the old piston failed: dust past the air filter, an air leak at a crankshaft seal or the intake, or the wrong fuel mix will score a new one. Pressure and vacuum test the crankcase, use a ring compressor, and set the valve clearance to the service manual figure.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68082536153242,"sku":"ZO-GRWI-EW3J","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/51iBsU2F9FL.jpg?v=1794048515","url":"https:\/\/performancesawsupply.com\/products\/50mm-piston-and-seal-kit-fits-stihl-br800-br800c-br800x-zo-grwi-ew3j","provider":"Performance Saw Supply","version":"1.0","type":"link"}