moor man Posted June 30, 2020 Report Share Posted June 30, 2020 Got to admit this has me a bit baffled..... Picked up a Mitox 3600UX strimmer/brushcutter cheap. looks little used but 'won't run properly' To date I have; Changed to fresh fuel, 50:1 Checked fuel line ok. Checked fuel filter ok Stripped carb and cleaned with carb cleaner, diaphragms look fine. Cleaned plug. Reassembled and fired up it does run but will not pick up revs when given throttle. Here's the strange bit.....when the on/off switch is moved to 'off' it will pickup revs, run normally for a few seconds then stop? Is it electrical I wonder? A new carb is £50 but I have a sneaking suspicion that it's not the problem. Any thoughts from the P.W. posse? Thanks. Quote Link to comment Share on other sites More sharing options...
strimmer_13 Posted June 30, 2020 Report Share Posted June 30, 2020 (edited) Mitox run on 40:1. Mine did anyhow. Also sounds like carbs Also just thought about it, mine was a cow to run tidy, if I remember I had to leave it idle for a few mins to warm up, I also adjusted the carb as it would just blurb out. It ran really well after, I was quite impressed, a £15 jobbie of ebay which I tfr and pressure washed and made £60 profit. Wish I didnt sell it, just all my gear runs at 50:1 Edited June 30, 2020 by strimmer_13 Quote Link to comment Share on other sites More sharing options...
wisdom Posted June 30, 2020 Report Share Posted June 30, 2020 (edited) Air leak between the carb and manifold could be a possibility. Does it run better with the choke on,even when warmed up? Edited June 30, 2020 by wisdom Adding text. Quote Link to comment Share on other sites More sharing options...
ditchman Posted June 30, 2020 Report Share Posted June 30, 2020 this is the reason why i dumped all my strimmers chainsaws air blowers..............cause i got sick and bloody tired of messing about with them to get them to run right and start properly everything i have now including pressure washer is all sthil...........................total no brainer even get a 2nd hand sthil rather than a new rubbishy thing......... reading threads like this make my skin crawl....remembering the years of lost time and waste of breath and angst stupid machines have caused me...... Quote Link to comment Share on other sites More sharing options...
strimmer_13 Posted June 30, 2020 Report Share Posted June 30, 2020 5 minutes ago, ditchman said: this is the reason why i dumped all my strimmers chainsaws air blowers..............cause i got sick and bloody tired of messing about with them to get them to run right and start properly everything i have now including pressure washer is all sthil...........................total no brainer even get a 2nd hand sthil rather than a new rubbishy thing......... reading threads like this make my skin crawl....remembering the years of lost time and waste of breath and angst stupid machines have caused me...... Where's your national pride man, British manufacturer about 7 mile away from me 😂😂😂 Btw every single bit of kit I now own is stihl. I'm a stihl whore Quote Link to comment Share on other sites More sharing options...
B725 Posted June 30, 2020 Report Share Posted June 30, 2020 It may be just a simple tweak to the carb, I had a new Titon and it does say in the manual that after a couple of hours running to the adjust the carb. My mate did it for me after an hour or so run time,and it ran fine. I got a set of pacman carburetter screwdriver's for a tenner so I can do it myself. It just requires the tinyist movement and its runs just fine. Quote Link to comment Share on other sites More sharing options...
Dave at kelton Posted June 30, 2020 Report Share Posted June 30, 2020 I have a mitox multi tool and that too was temperamental. I took it into the local mower man and mitox dealer and he serviced and tweaked the carb which he said can need adjustment time to time. Mix is 40:1 and he also recommended use of Briggs and Stratton fuel fit. Now starts runs and Revs fine. Thinking of picking up one of their chainsaws as well as come with five year warranty. Quote Link to comment Share on other sites More sharing options...
bornfree Posted June 30, 2020 Report Share Posted June 30, 2020 It's certainly a weird one. Normally when the ignition coil goes it will start and run fine for a few minutes till it warms up then stop dead and won't restart till it cools. Quote Link to comment Share on other sites More sharing options...
bornfree Posted June 30, 2020 Report Share Posted June 30, 2020 Just a thought, seeing as the cutout switch just earth's the coil to stop the spark I would check that the coil retaining screw's are tight and if there is an earth cable to the coil that it's connected. Quote Link to comment Share on other sites More sharing options...
blackbird Posted June 30, 2020 Report Share Posted June 30, 2020 2 hours ago, ditchman said: this is the reason why i dumped all my strimmers chainsaws air blowers..............cause i got sick and bloody tired of messing about with them to get them to run right and start properly everything i have now including pressure washer is all sthil...........................total no brainer even get a 2nd hand sthil rather than a new rubbishy thing......... reading threads like this make my skin crawl....remembering the years of lost time and waste of breath and angst stupid machines have caused me...... If only Sthil made mole traps 😀 Quote Link to comment Share on other sites More sharing options...
moor man Posted June 30, 2020 Author Report Share Posted June 30, 2020 Thanks Born free, will check coil screws and electrics in handle too. Dave; Mitox have a fair rep for saws amongst the arborists I believe. Quote Link to comment Share on other sites More sharing options...
dodgy dave Posted July 2, 2020 Report Share Posted July 2, 2020 On 30/06/2020 at 20:05, ditchman said: this is the reason why i dumped all my strimmers chainsaws air blowers..............cause i got sick and bloody tired of messing about with them to get them to run right and start properly everything i have now including pressure washer is all sthil...........................total no brainer even get a 2nd hand sthil rather than a new rubbishy thing......... reading threads like this make my skin crawl....remembering the years of lost time and waste of breath and angst stupid machines have caused me...... never thought you were a man to give up ditchman Quote Link to comment Share on other sites More sharing options...
ditchman Posted July 2, 2020 Report Share Posted July 2, 2020 27 minutes ago, dodgy dave said: never thought you were a man to give up ditchman time is not on my side........... Quote Link to comment Share on other sites More sharing options...
V8 90 Posted July 2, 2020 Report Share Posted July 2, 2020 I had the same kind of problems with mine, after a bit of investigation I found the fuel supply pipe perished & split, the split was hidden in the rubber grommet where the supply & return fuel pipes enter the fuel tank - worth a look 😉 Quote Link to comment Share on other sites More sharing options...
bigroomboy Posted July 2, 2020 Report Share Posted July 2, 2020 Probably not your problem here but the other thing worth checking is that the gause in the exhaust isn't blocked. I've found that if you are an occasional user of small engines that using aspen fuel is well worth it. Its expensive but avoids many of the common issues with carbs, fuel lines and exaust. Probably cheaper when compared with how many people throw out perfectly good equipment in frustration. Quote Link to comment Share on other sites More sharing options...
Brodie Posted July 3, 2020 Report Share Posted July 3, 2020 On 02/07/2020 at 15:26, bigroomboy said: Probably not your problem here but the other thing worth checking is that the gause in the exhaust isn't blocked. I've found that if you are an occasional user of small engines that using aspen fuel is well worth it. Its expensive but avoids many of the common issues with carbs, fuel lines and exaust. Probably cheaper when compared with how many people throw out perfectly good equipment in frustration. Totally agree with using Aspen fuels. You can leave it in the machine all year round without fear of gumming up. Aren't Mitox rebranded Chinese products? Quote Link to comment Share on other sites More sharing options...
strimmer_13 Posted July 3, 2020 Report Share Posted July 3, 2020 8 minutes ago, Brodie said: Aren't Mitox rebranded Chinese products? No idea. They were sold/ run by Rochfords in Wincanton, but recently Rochfords shut shop as they were bought by alko (a German brand) and from what I understand they had to shut shop as they coundnt get any support or parts from suppliers for other brands they sold. They were a main dealer for a few brands but they all took it as a slight and stopped supplying them. Seems to be a very bitchy business to be in. Mitox is still running though, and customer support is suppose to be excellent Quote Link to comment Share on other sites More sharing options...
defender Posted July 6, 2020 Report Share Posted July 6, 2020 I had running problems and starting problems with my Mitox chain saw, fit a carb kit off ebay and it starts and runs easy. https://www.ebay.co.uk/itm/Walbro-WA-WT-Carburettor-Carb-Diaphragm-Repair-Kit-C-W-Needle-Lever/201590648195?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 Quote Link to comment Share on other sites More sharing options...
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