Clean and convenient, stihl motomix provides you with a premixed 50. Glastonbury, ct i purchased a stihl km 110r power head that uses their new 4mix engine. Stihl new 4 stroke using 2 stroke fuel mix bob is the. Stihl motomix, the official fuel of stihl timbersports, is a premixed, ethanolfree, 50. It will give your engine what it needs for performance and protection.
The stihl 4mix engine, which runs on a fueloil mix just like a 2stroke, offers the benefits without the compromises of 4stroke power. The stihl 4mix engine check worksheet is a simple guide to verify any faults found in a logical and efficient manner. The announcement was made at the 2001 green industry expo in tampa, fla. We also recommend that if a unit will be left unused for more than 30 days that it be stored dry.
Since weve been looking at some interesting engines lately that take the road less traveled, a comment by rafe03 on the ellwood hybrid story pointed to this hybrid that needs no oil in the crankcase and no oil pump either, but it operates as a 4 stroke. Stihl 4 mix engine technology provides fast acceleration, more power, added torque, lower noise, reduced emissions and increased fuel efficiency to complete jobs quickly, quietly and more easily. Stihl new 4 stroke using 2 stroke fuel mix bob is the oil guy. An accurate repair cost estimate can then be prepared. The twostroke power unit with 2 mix technology is convincing with its high engine power, excellent powertoweight ratio and outstanding torque development for high cutting performance and pulling power. Best oil for stihl 4mix engines bob is the oil guy. Stihl 4mix technology combines the power and torque of a fourstroke engine with the flexibility and versatility of a twostroke. I just bought a 4 mix trimmer last spring, so i only got to use it for a year. Knowing the proper way to mix your fuel is the first step in keeping it running strong and long. I have been told that it is better to run the higher quality stihl oil in the 4 mix engines though.
The stihl 4 mix engine, which runs on a fueloil mix just like a 2stroke, offers the benefits without the compromises of 4 stroke power. The new clearing saws and brushcutters longer run times, versatile cutting tools and our new 4mix engine for even more engine power while you work. At the shop i work in 2cycle repairs out number the 4 mix repairs by a huge number. Stihl has further optimised its ms 261 cm chainsaw. All stihl gasolinepowered engines can be used with up to a 10% e10 blend of ethanol in the gasolineengine oil mix. Stihl 4 mix troubleshooting before any stihl 4 mix troubleshooting repair work is performed on a machine, a thorough evaluation should be made to determine what parts are actually in need of replacement or maintenance. Stihl employs a variety of technologies to meet and exceed epa and carb requirements while meeting the needs of its customers.
Ive been told by my stihl dealer they 4 mix engines havent made it to the saws due to odd dimensions referenced in an earlier post and weight. Aug 07, 2006 ohh, you mean like bouncing off the rev limiter like a car would do. Because the crankcase pulse is weak on the 4 mix engines, the carbs use a booster pump diaphragm, which is the extra bulge on the bottom of the carb. Stihl 4 mix troubleshooting and repair guide chainsaw. We had a couple of stihl reps come to our depot to demonstrate their range of blowers and strimmers. Like the fourstroke and twostroke engines, the stihl 4mix engine is an internal combustion engine. Not only are they gobsmackingly good, but they have developed a 4 mix engine, its a four stroke but uses 2 stroke oil, so no sump, but is more torquey than revvy and has much less emissions emissions is a big issue even for 26cc garden tools. Before any repair work is performed on a machine, a thorough evaluation should be made to determine what parts are actually in need of replacement or maintenance. The advanced selftuning technology ensures optimum engine performance day in, day out and makes mtronic power tools very easy and efficient to use.
How to adjust the valves on a stihl 4mix trimmer or weedeater. The new stihl ms 280 is the worlds first chain saw with intelligent. I have owned a stihl fs 100 4 mix string trimmer for approx 2 years. In this video i show how to adjust the valves on a stihl 4mix type engine, like those found in trimmers. May 31, 2012 hello all just wondering what 2stroke oil people use in stihl 4 mix engines just about he get a stihl kombi kmr and getting a little confused as some people use any old oil and others say you need fully synthetic stihl oil or it leaves carbon deposits.
Km91r stihl kombi pro 4 mix power head q5 added id stihl products are in store pickup only. Motor stihl 4 mix je diky mazani smesi lehky motor. View or download the stihl technical reference guide 2016. Advantages of the stihl 4 mix over a two stroke1 produces much less pollution, i have heard figures of 90% less hydrocarbons. I know stihl has a terrible rep for starting issues especially on a hot day but ive found the reason for me anyway on the 4 mix kombis if you are having the same prob which i know at least a few are by whats written on here then you will kick yourself for how simple it is we have two 4 mix kombis and never had starting issues nearly always first pull hot or cold, but eventually. Stihl trimmers and brushcutters are made for those who truly appreciate a wellgroomed landscape. Feb 17, 20 stihl doesnt publish this stuff except for their dealers. The stihl 4mix engine thus combines the advantages of a 2stroke and a 4stroke. Energy is released during combustion of the fuelair. Worksheets are available for both 2cycle and 4mix engines. The valves are odd to find when first looking at the engine. As well has having plenty of lugging power and perceptibly higher torque, the 4 mix engine is also convincing in terms of lower emissions, low maintenance and a pleasant sound. I think a 4 mix chain saw, if producing the same power and torque as the 2stroke counter part would be awesome. You must use a carb with the boost diaphragm to get adequate fuel pump operation on a 4 mix.
Someone please explain a 4 stroke engine needing 2 stroke. Low emissions and more engine power on this stihl kombi pro power head. Also, the 4 mix engines run 3k4k lower rpm than the standard 2strokes they have great torque, but dont move wood as quickly as a result. This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the engine stops. How to adjust valves on a stihl 4mix trimmer or blower youtube.
Diky tomu je minulosti i narocna servisni prace, jako je pravidelne nastavovani vule ventilu, kontroly oleje. Our trimmers, brushcutters and weed wackers are designed to provide the power you need. Stihl, of course, recommends their brand of oil, because there is a potential problem of excess carbon build up in the valve area. The spark plug must be installed in the cylinder when performing an ignition module. I purchased a stihl km 110r power head that uses their new 4 mix engine. Sep 29, 2017 correct way to adjust or tune the carburetor on a weedeater grass trimmer video duration.
The stihl 4 mix engine thus combines the advantages of a 2stroke and a 4 stroke. Eliminate the hassle of mixing your own oil and fuel mixture with stihl motomix. Starting the prizewinning stihl 4 mix engines is thus convenient and quick. Stihl 4 mix starting problems possible solution archive. The fuel mix lubricates the engine like a 2 stroke. Stihl 4mix troubleshooting and repair instructions pdf download. How to adjust valves on a stihl 4mix trimmer or blower duration. But i have nothing bad to say about my trimmer, it is awesome. Stihl 4mix engine technology provides fast acceleration, more power, added torque, lower noise, reduced emissions and increased fuel efficiency to complete jobs quickly, quietly and more easily. Stihl fs 90 r,4mix, after using for a year ok after a year i am really liking my stihl fs90r gas trimmer. Oem stihl 4 mix valve clearance kit 4180 007 1005 fs90 ht101 km and more. Using the right type of fuel is critical in the safe and efficient operation of your stihl equipment. Stihl 4mix engines general chat arbtalk the social. This chainsaw guide stihl technical reference guide has various settings and adjustments for many stihl products.
Pdf information and available in full download version by browsing on search engines. Stihl 4mix engine technology provides fast acceleration, more power, added torque, lower noise, reduced emissions and increased fuel efficiency to complete jobs quickly and more easily. If youre like us, theres nothing more satisfying than the sound of a whirring trimmer line and the smell of freshly cut grass. Stihl motomix high performance ethanolfree fuel mix. Stihl weed eater poly blade string rentals fairview. The service manuals for stihl 4mix engines outline testing procedures as well as special tools that are needed to repair. Seems any 4 mix unit produced in the last 23 years has been fault free. Clean up your lawn or clear brush with stihls line of trimmers. The awardwinning stihl fourstroke engine that runs on a petroloil mix. To make starting the stihl 4 mix engine easier, the engine has been fitted with a decompression system which extends the valve opening times when starting. That vist took place a few years ago and today you rarely see a 4 mix unit, be blower type or trimmer type with any issues at all.
817 124 1268 1243 236 1287 1541 452 1424 179 166 1487 617 560 46 1232 653 1054 908 437 67 699 920 103 371 1448 848 997 111 52