I am reviewing this HIPA carburetor for Stihl weed trimmers in general, but specifically for my Kombi KM130R model. Overall, this is a quality product that worked with my engine even there were some differences when compared to my OEM carburetor. It easily installed as a replacement and the engine started on the third pull with this new HIPA carburetor.My original problem was that when pulling the throttle trigger to full power, the engine would start to die. I checked the spark arrestor, fuel lines, tank vent valve, throttle linkage, fuel filter in the tank, air filter, and spark plug. All were in proper working order. The engine started well, just would not run at full open speed. So I decided on the new carburetor approach and it worked. This is what I found out about this HIPA carburetor and my OEM Stihl carburetor.First, all the hose connections from the HIPA to the OEM Stihl are the same composition and diameter. The bottom connections on both carburetors are white plastic and .187" in diameter. The top pipes on both HIPA and the OEM arebrass colored metal and .162" in diameter. That was good news for me because my hoses were in good shape and I reused them all (did not need the hose provided in the kit). This was also good because to use the HIPA hose assembly you would have to pry out the gas tank connector out of the top of the gas tank and I did not want to have to mess with that step. Also, the impulse tube with connects to the main engine via a rubber tube was the same on both carburetors at .241" in diameter. You will have to reuse your original hose as there is not a new one provide in this kit.Second, the intake diameter of both carburetors (the entrance where the choke butterfly is located) were the same at .705". There is a difference in the choke butterfly orientation from the original carburetor to the HIPA. The OEM butterfly traveled a full 90 degrees from full open to full closed. The HIPA choke butterfly only traveled about 75 degrees from fully closed to only about 70% open. It doesn't seem to affect the operation of the engine but I will have to observe performance over time.Third, outtake opening (the side of the carburetor connected to the engine) is much smaller in HIPA model. The OEM Stihl is .629" whereas the HIPA diameter is only .550" in diameter. The butterflies in both models are naturally similarly different. The Stihl Kombi KM130R is one of Stihl's biggest weed whacker engines so this factor may limit the engine's ability to develop full power in the future. I don't do any commercial work or use heavy gauge line so I may be okay.Fourth, as commented on elsewhere in these reviews, the HIPA carburetor does not have a vent tube coming off the (black) plastic top of the carburetor. On the OEM model, this vent tube connects to air filter housing and can draw air from the filtered side of the air filter housing. This may not be a biggie because the new carburetor design my not require this old venting feature unique to the old OEM carburetor that failed. The issue I had was that now there is an open portal on the filtered side of the air filter housing that can easily suck all sorts of dust and debris through this hole directly into the carburetor throat! My solution was I found the end of an old plastic felt tipped marker that was the right size and cut off the end so that it just fit in the open hole without sticking out on either end. Another reviewer said you could just switch out the tops. I didn't do that for two reasons: 1) maybe the HIPA carburetor was not designed to run with a vent, and 2) I didn't want to mess with disassembling a new carburetor to try to rebuild and old one, and 3, maybe the internals of the two carbs are not the same. Seemed like taking a chance I didn't need to.Fifth, this was an easily one for me. The choke knob that comes with the HIPA carburetor was too short for my engine. When I tried to reattach the air filter housing, the housing was bumping into the HIPA supplied choke knob. My old choke knob was about 3/8" longer than the HIPA choke knob. Since the choke shaft on both carburetors where the same diameter, I pulled off the HIPA knob and replaced it with the original choke knob. Note: because of the differences in the HIPA choke butterfly travel (70%), the pointer on choke knobs are never going to line up with the symbols (choke open or closed) on the Stihl engine plastic casing.All in all, this HIPA carburetor solved my issues and at very reasonable price. People with a more recent Stihl weed trimmer model should not have most the issues I observed.

Installed on my pole saw that wouldn’t rev after sitting for 8 months. Perfect fit and started right up and went to work. No tuning required. Cheap, fast delivery, and it worked great.

Perfect fit on my equipment.RUNS GREAT

Bolted right on without issue.i purchased this carburetor as a replacement on my Stihl Fs90 trimmer . Came with everything you need for replacement . Only a small adjustment to the idle screw and it runs like new .

Product was perfectExactly like factory.Everything fit perfectGreat price

Easy to install and much cheaper to do it yourself. I know I saved lots of dollars and it all fit perfect.

Stihl KM110R wasn't running right. I put this carb on and it cranked right up and the problem was solved.

This carburetor has perfect fit & function in my Stihl KM110R. Idles low and smooth. Full power is on the rich side, but that's OK since that provides better lubrication and cooling. And it's way cheaper than the OEM replacement.A friend gave me his old Stihl KM110R. It sat around in his garage for years and when I got it, it would not run. I spent hours overhauling the carburetor having parts so tiny I had to wear my 8x magnifiers, cleaning out with Berryman B-12 etc. I got it starting nicely and running at full throttle, but only at full throttle. The idle passages were so clogged no amount of cleaning could clear them. I finally gave up and got this replacement. Took all of 10 minutes to install it, and now that KM110R runs like new again.

Awesome worked good

I have purchased many Hipa products but the carb is JUNK ! It ran for a short time then would not run again . I checked the ignition , new fuel , rocker arm clearance , fuel filter and it will not start again ! I have bought and installed many a 2 cycle carbs but this one is a DUD ! I want to return it and get a refund or credit . I will purchase another from a different supplier . Please address my problem and get back to me .

Carb had no throttle response on let off. Replaced with a different brand and works flawlessly.