STA-BIL Fast Fix Small Engine Treatment, 4 oz

I was having some issues with my self propelled walk behind lawn mower recently. It would fire right up on the first pull, but when I would turn the engine off to empty the bag, it would take forever to restart. It was to the point that it was literally wearing me out to get the engine to turn over again. I always change the oil; clean or replace the spark plug and clean the air filter before the start of every season. I did some research online and found the carburetor could be causing the issue. Rather than remove and clean the carb, I decided to try an additive. I have to say this product exceeded my expectations. I pumped out what fuel was left in the mower and discarded it. I filled a 2 gallon gas container with fresh fuel and added an ounce of the Fast Fix. The engine appears to be running smoother and almost always restarts with one pull after the initial start up. I would recommend giving this a shot as an economical solution.

I have lots garden tools that runs on gas, I follow maintenance guideline and everything works as it should but some are pretty old and runs little rough even after tune up. Figure this treatment might help making some of the rough running equipment run better and it sure did. my edge trimmer alwyas splatters when I 1st started and idles Hunts a bit until it gets hot, after using this treatment, it ran smoother and starts quicker. also added to my mower and it did the same. My chainsaw which I use rarely and always hard to start and after running a while, it will die and hae to wait a while to get it restart, after adding this to it, it amde a big difference in starting and have not stalled out since the treatment. Will be using this prior to winter storage on all my equipment, two or 4 cycles.....

Wow... This little WEN Generator has been sitting for 8 years with the same gas in the tank. I drained the tank, put some fresh gas in, and--nothing. Changed the spark plug--nothing. Used starting fluid--nothing. Bought this, added about 1/2 an ounce to a gallon of gas, poured about a quart in the tank, hit it with starter fluid, pulled the starter and WHAM! I let it run for about 15 minutes and shut it off. Next day it hit immediately BUT kept stalling out, then wouldn't start at all. I blew a little starting fluid into the gas tank (not the air cleaner or the carb), gave it a yank, and it started but ran a little rough for 10 minutes and needed to be choked. Gradually, I eased the choke back, let it settle down, and ran for half an hour with no problems before I shut it down. Next day, filled it up with with regular gasoline, it hit and ran the entire day. Without it, the generator was going to the dump. Important to note that this isn't a fuel additive! Use about a quart of gas and shot of it to get your engine running and clean the carb and THEN fill the tank with regular gas and let it work the stuff out of the fuel system. Your engine doesn't want this stuff full-time.

Used in a 15.5 Briggs motor in a try built pony. Cleared up my rough running engine in about 10 min. I doubled the strength that they suggested. Surging idle has almost disappeared. Will run more. I’m happy.

This stuff works!! I put it in my 3 lawn mowers and a gasoline generator and all 4 seem to be easier to start and run better, the 3 mowers have more power! Will buy again if needed.

It really does work, my old Briggs push mower was stuttering really badly, put some fresh gas and some of this treatment in the tank. Ran really rough for a few minutes, but after about 20 minutes of running, she was running like new again. Good place to start if you don't want to pull the carb off and clean it manually.

I have a 2003 Yard Machines B&S 6.75OHV that I use as a Winter Rye mower and turfing the Summer Bermuda grass down. I didn't do the Winter lawn this year, so the mower sat. I thought I should start it with some fresh gas....it disagreed. I bought the STA-BIL Fast Fix (I depend on STA-BIL regularly for all gas), I poured a little into the tank on the mower and primed enough times to flood for a few days in a row. I pulled the carb after that and wish I didn't, as I tore the gasket off for the air intake to carb. To my surprise, the carb was totally cleaned up, not jet clog, gas tank too. I have sprayed carb cleaner in the carb and get it to start for a moment. I have new gaskets now. Now the pull bar cable retainer on the handle (plasic cable retainer) broke. Next, vice grips w foam. This stuff works great. I have 25cc Ryobi blower, trimmer that are 10 years old or more. I added an ounce per gallon to the can, and a little dribble in the tank filled. They started running better when warmed up. I used to use 40:1 2 cycle mix, now 50:1 as thats what the engines say on them. It probably saved me a carb rebuild/replace on those. I'm going to keep using this until it's gone. Great for the money. Easy to use.

I used it, didn’t see much improvement. I doubt I will get it again. Products like these are usually a better idea than it is in practical application.

Put it in a lawn tractor. Let it sit overnight. Started the next morning and was still running a bit rough. Started cutting the lawn and could hear tractor running smoother. Before adding it. Tractor would run and die a few minutes later. Now just a touch of the key and it fires right up. Before it would whirl over for a bit and finally start.

Seems to work well and cleans out my small-engine fuel systems.

This is amazing stuff! Saved 2 mowers and a generator. We swear by it!

I don't write a lot of reviews, but it's worth it for this stuff. My snowblower carburetor was pretty clogged, to the point of hardly having any go power. Used one application and a couple uses later, it's now running like new! Def worth it!!

Product work as instructed! I used 2 ounces to 10ltrs to fix idle on 9.9hp Yamaha outboard idle issue! Left the 91 fuel in 8months and it turned to varnish blocking up idle circuits! Made new batch of 10ltrs of 95 fuel and two ounces of Fast Fix and run for 30min and it fixed it perfectly 10/10