Bring your Stihl HL100, HL100K, KM90, or KM90R power tool back to life with this complete carburetor rebuild kit. This unbranded kit includes all the essential gaskets, diaphragms, and small parts you need to overhaul your carb, plus a cleaning brush to help scrub away old varnish and grime. It's specifically designed to fit models using the C1Q-S173 or C1Q-S174 carburetors. If your trimmer, brushcutter, or other Stihl tool is hard to start, idling poorly, or losing power, a carb rebuild is often the cheapest and most effective fix. The kit is brand new, made in China, and comes as a complete bundle. Doing the rebuild yourself saves a ton of money compared to buying a new carb or taking it to a shop. Just take your time, follow a guide (plenty online), and replace all the worn-out soft parts inside. Get your reliable Stihl equipment running like new again with this affordable, all-in-one repair solution. Perfect for DIY landscapers and small engine enthusiasts.