Mountfield RS 100 Petrol Lawnmower Service (HP414)
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- Опубликовано: 22 фев 2020
- In this video, I service a Mountfield lawnmower with a RS 100 Engine model number HP414
I show how to service the carburetor as well as lots of service tips
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Heres a link to the correct spark plug for this lawnmower
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RS 100 Genuine Mountfield Replacement Carburettor
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Хобби
First time I've ever serviced my faulty lawnmower, and now it's as good as new! Purrs like a kitten. Great, informative video instructions. Thanks!
Nice work! Enjoy
Absolute legend. I just managed to get my mower working again thanks to you!!
Thank you for a straight talking, easy to follow tutorial.
That’s my Mountfield RS100 HP414 serviced and running like a dream. The spark plug needed a good clean with a wire brush and came up like new.
Thanks for your help. 👍🏻
Gordon Constable Brilliant!! Thanks Gordon!!
Just had a crack at swapping the carbureetor over on my Mountfield as a first timer. All done all working can't thank you enough 👍👍👍👍
Great video, just cleaned out the carb on my RS100 HP414 as it was hunting.. Following your instructions, it now runs like a dream...
Great video thanks. There were no obvious signs of gunk inside the carb but I cleaned it all out anyway and it runs a treat. No more surging!!
Thanks so much for taking the time to do this video and going through it in detail! I have just managed to clean the carb on mine and it now starts! Has saved me a few quid and now I have a better idea on how to tackle these sorts of problems in future 👍
Excellent Steve!
Thanks for all the information. Lots of us seem to have similar problems with this engine. I do think that modern fuels don’t help as we don’t know exactly what gets added to them, and they are biased towards fuel injection and not humble carburettors. You’ve saved me a lot of work, thanks.
Thank you so much for this video. I actually managed to clean my carburettor on this same lawn mower. And it worked! I’ve never done anything like this before.
Amazing clear and helpful video. I have already recommended your videos to my neighbour. I was so chuffed. Thank you.
Fantastic! hope they subscribed!
Genius - I have this mower and was able to give it a service thanks to your simple to follow and amusing videos. Excellent work
Thanks to your brilliant video I managed to take off my Mountfield RS100 carburettor, service it and get it back on running.
I've got the same RS100 that I've had from new for about 7 years - it started hunting quite badly yesterday, so found this vid on servicing the carb. Did it today as per this video and it's like a brand new mower! I think it might even sound louder than it ever has done! Dead easy job to do, too.
James Love Glad to help!
Great video my mower did not start even with carb cleaner or engine start but after stripping down the carb clean all the holes and removing all the crud it started and runs as new. This video was not boring very informative. Learnt a lot with your tips and little tricks.
Great video thank you, precise, clear and very helpful. It inspired me to do my own first full service on my spare HP414 which was not starting, and now goes a treat so a big thank you to you. Always better and cheaper if you can do it yourself and for others. Have subscribed (and yes the joke did make me and my mates laugh!)
Fantastic video, was close to binning my Mountfield RS 100 Petrol Lawnmower (HP414) and having followed your video and servicing the carburetor it is up & running again :)
Thanks for this video! I followed this and stripped my RS100 yesterday that had been outside for a while, cover had blown off, old fuel and wouldn't start at all - dead! Fuel was getting to the carb but after stripping the carb jet was blocked so i gave it a full service and it started straight away thanks!
David Noakes Thats brilliant David! Glad to help
Brilliant , just serviced the same mower thanks to your video. Running smooth , thank you fella.
Just picked one of these up for free, never had one before, just grabbed a drink going to watch this before I strip it down, cheers for the vid!
Thank you mate, was just about to replace my mower, watched this video serviced the carb how you said and £10.00 later on carb cleaner and a fine cleaning kit and all sorted, well happy, thank you so much..
Damian gilbert Brilliant Damian!
Thank you. Just getting mine ready for this year and it wouldn't start. I cleaned the spark plug put it back together and after a few splutters off it went. I looked at a few videos but yours is most definitely the best.
Glad it helped
Thanks Mower Man, just watched this video and managed to HP414 back up and running. The stainless bush on air filter housing even fell out exactly as it did during the video. My issues were mouse related, little darling had chewed the hose from the primer bulb. Managed to replace it with a pipe I had left over from a strimmer repair. Your video gave me the confidence to remove the carb and clean all that down at the same time. Buying an equivalent SP Mower in B&Q today would be £250, so you have saved me a fortune. Much appreciated.
That's great Donald! nice work!
Great video, my RS 100 was running rough took some of your tips on board . Runs smashing now .
Great to hear!
Great video, I was having problems how to unhook the springs not wanting to break them. them, worked a treat. Thanks Mower Man
Glad to be of assistance!
I have this exact mower but it never ran quite as sweet it would take approx 20 - 25 mins to get running. So I watched this video and stripped it down, cleaned the carb out and cleaned the spark plug and it now runs perfect ! No excess revs no stutter ! Perfect thank you very much for sharing this video
Great stuff!
Just got this mower free it runs n dies a good service is all it needs il have a bash at weekend thanks
This is an excellent video, The level of detail that you go into on the carburetor was very nice to see.
Dan Lester Thanks Dan! I do my best
Great presentation -crystal clear. Love the gentle vein of humour. Also the manner of delivery was not at all condescending. I watched this video because I have a problem with my fuel line but ended up watching it all. Reason? It was informative and engaging. Much appreciated.
Thanks Ian much appreciated
Brilliant. Mower works again now. Thank you very much. Very helpful
Thanks mate - excellent, clear, easy to follow video. I serviced my carb exactly as you said, and the mower started first pull and is running sweetly. Much obliged!
Thanks for taking the time to make this video. Had one of these for several years now I know ow to service it. Easy to follow and very informative and love the humour. Gordon
Thanks Gordon!
Thanks a lot, I have the confidence and knowledge to carry out open heart surgery on my little mower, saves me taking it to the repair shop, much appreciated
Excellent Pat!
I can not thank you enough,This video is way up there with the best,infact I personaly think it is the BEST. THANKS FROM Ken.
Glad you enjoyed it
💯% for your step by step instructions video on servicing a mountfield RS100 mower.. now feel confident in doing a carburettor clean myself.. this is definitely gonna save me a few quid! 👍👌
Great to hear!
Great video, with a full explanation. I will now go and service my carb, Fingers crossed.
Go for it John!
Have an EP414 (RS100) and used your guide to take apart the carb on a machine which had been working 5 minutes earlier but had decided it had had enough. Few minutes of swearing and spraying later and it was up and running again. Cheers!
timne0 Well done!
Boss video. Great step by step instructions, easy to follow and helped me fix my mower. Thank you so much for this content 👍🏻
Thanks! much appreciated
I really enjoy your videos. I have the same model with the same issue but when I saw how fiddly it was accessing the carburettor I thought straight down the repair shop as I couldn’t handle the stress. Thank you 👌
Many thanks!
👍 We just followed your vid and fixed pur mower. Thank you so much.
You are very thorough Paul, love your videos. Thanks.
ken davies I try to cover most things people might get stuck with Ken. Cheers
Thanks have a Stiga rs100 which was running for 5 minutes , hunting then cut out. Did the carb cleanup as shown and still hunting found out I had replaced in line filter with home brew motor Bike filter which I had pinched too tight with hose clamp and flow rate was real low . turned out it just ran for the full bowl then cut out , then of course bowl would fill again and run for another 5 minutes. Drove me nuts but your tips lead me to the fuel issue. Martin
Brilliant, informative video. Really grateful for your insight and expertise. Got my lawnmower up and running for £0.00!! Carburettor was full of rust and all blocked up, cleaned up and good as new now!
fantastic
Top video, well made, you're a natural presenter.
Great video, I've just been given one of these mountfield rs 100 it supposed to run, I will be giving it it's first run out in the next couple of days but if it doesn't I can revert back to this brilliant video. 👏👍👍
Thanks Jonathan
Great video I have the same lawnmower which has a damaged fuel line. Thanks for posting.
Thanks a lot for this video, my mower is now running sweet as a nut -THANKS
Thanks for the video.. Just picked up one of these but with the self propelled option. Previous owner said it would sometimes cut out and erratic idle. Will do the carb maint and hopefully it will fix it..
Also, when I tipped it on its side to quickly check the blade, some fuel seemed to run out from where the carb is, will check that out also.
Definitely feeling accomplished after watching this. Thanks for the emphatic walk around whilst it was running too! New Sub here.
Thanks John
Thanks, fixed my old Mountfield mower with this video. Be sure to check/WD40 the linkages and springs that connect to the carb - this was a slight issue on mine too.
Hi ya mate. I appreciated your tutorial video so much that the least I can do is give yourself and any future viewers an update..?
I take my hat off to ya mate...🙌👏. I got straight home from work today and followed each step of this video again to strip, clean and rebuild the carburetor. I wouldn't have achieved this without your help. The job was a complete success in just one attempt. Everything you said and did in this video is absolutely spot on. There was lots of gunk in the carb and even some rusty water in the bowl. Cleaned and scrubbed everything,...removed the jets and unblocked the clogged holes etc. Bolted everything back onto the mower,......kept pumping the primer bulb until I saw petrol squirt out in the carb,......and on the 2nd pull it fired up and purred like a kitten again...!! Unbelievable. I'm really chuffed mate. I mowed the back lawn as a tester to make sure I'd got everything right. It hasn't run this smooth since the day I bought it from new. And that's no exaggeration!
*FOR ANYONE WITH A MOUNTFIELD CARBURETOR PROBLEM WHO IS SCROLLING THROUGH THESE COMMENTS WONDERING IF THIS VIDEO IS WORTH WATCHING..? THE ANSWER IS A BIG 'YES'. WATCH AND FOLLOW THE EASY TO UNDERSTAND INSTRUCTIONS ON THIS VIDEO, AND I GUARANTEE YOU ALL 100% THAT YOUR MOWER WILL BE UP AND RUNNING LIKE NEW IN NO TIME AT ALL* 🤝👌💪👍😊
Thank 7sins I appreciate that!
@@MowerMan no worries mate. You deserve it. I did the front lawn after work today. First pull and it was up and running. I'm glad I decided to have a go at it myself after watching your video. Respect to ya for giving up your time to make this video in order to try and help others like myself. 🤝👏👏👌👍😊
Outstanding video, thank you. I have now found the source of my mower problems and I'm heading to your site!
Really enjoyed this vidio. Very informative. Made me laugh at times keep up the good work
Cleaned the carb following your instructions and hey presto a working machine again
Thanks
Thanks, a great video and I’m just in the middle of cleaning one of those carbs. 👍👍
Cheers!
I have a 414 mountfield lawnmower too since 2011 and still running with super unleaded from shell
Left my Mountfield in the rain and now it wont turn over. Will do everything youve done in this vid and hopefully it will be fine.
cheers pal, really handy, up and running once again :)
Hi great video. I had the hunting problem last year, cleaned carb and put back three times but still bad. Eventually I found another black plastic jet, i think, on the top by the plastic throttle control, cleaned it and cured it. Might have been coincidence but just started it today and still ok.
Same here. The black plastic plug is the low speed jet. I had to take that out and clean it to cure the hunting on my machine.
Awesome Video, Really Helped me Out - Thanks!
Excellentg RABZ
Excellent video well done fella 👍
Brilliant video!! Really, really useful. Many thanks.
Brilliant video, watched the full thing, got the same mower, looking to do an oil change on mine soon 👍
Thanks 👍
I have that model, you can get the sparkplug cap off without removing the top, it's probably easier while not holding a camera. its the fuel line stopping you get the carb off the studs.
I've got an RS100 which after winter it has all of a sudden decided to stop starting, when it was a first start mower before Christmas! Going to drain the fuel as you mentioned first to give fresh fuel running through, after that if no luck I will clean the carb out... looks straight forward top man!
Check there isn't a filter in the fuel line
@@MowerMan what you mean filter? Blockage? I can see fuel coming through via the red button
@@Jonbuildz the fuel pipe that runs from the tank to the carb. Take it off and make sure there isn't a filter in the tube/pipe. Some newer models have this and it gets clogged easily
@@MowerMan cheers mate will let you know how I get on.
what a guy - great channel and website
nick hayden Thanks Nick!
Brilliant video really well explained. My mower is now sorted.👍Thanks.
Awesome!
Awsome video iv just picked up the same mower for free yesterday had have the same issue no fuel coming through so I assume a good clean of the carb and she will fire up hopefully I know it fire up as iv put petrol down the spark plug and it fired up thay way
Thanks for this tutorial I fixed my mower xxx
Awesome
👏👏👏.....cheers for this mate. Nice one. I've had my mountfield RS 100 for about 3 yrs now. I bought it from new. But for the first time in 3yrs it wouldn't start. Eventually I managed to fire it up but it wouldn't tick over and kept conking out..? I re fueled it with fresh premium petrol,...cleaned the spark plug and tested for a spark. All good. But it didn't fix the problem. I checked the fuel was reaching the carb, and I checked the primer bulb was working. All good. But it still didn't fix the problem. My mate said it sounded like it was something to do with the carb..? I got as far as removing the air filter box and the top cowling etc, but I couldn't work out how to remove the carb cos of that long thin spring and the linkage. I've never taken a carb apart in my life before, but after watching your superb tutorial video this evening I can't wait until I get home from work tomorrow and go out into the garden with my tools and my tablet to watch this video again as I follow you each step of the way. I was not confident at all about attempting to strip and clean the carb cos I've never done anything like this in my life. But I'm really happy and confident after searching RUclips for ...
"Mountfield RS 100 won't start" ....
And seeing your video at the top of the league. You certainly know your stuff mate, and the way you have presented this tutorial is so easy to take everything onboard and understand exactly what to do cos you haven't gone into any confusing technical rubbish that I don't need to know. Short ,...sweet,...and straight to the point. Excellent stuff. I've now subscribed to your channel mate. Well done, and thankyou very much. 👌👏👏👏🤝🤝🤝😊👍
Thanks a lot! I really appreciate that!
@@MowerMan you're welcome mate. Great video. I've got my socket set out ready for when I get home, and my uncle is gonna drop me round a can of carb cleaner spray tomorrow. I'm looking forward to the project for sure. By tomorrow evening I'll be posting again to let you now how it all went. I know what the problem is, but I didn't know how to go about it. But thanks to you,....I know 100% that my mountfield RS 100 will be up and running again by approx 6pm tomorrow. Watch this space...! 😉💪👊💥🤝👍👍
Great Video. i have same Mower got it for £15.00 from car boot sale in Feb. Came with a spare carb as well the only problem i have it runs uneven, hunts and surges. I suspect carb needs a good clean the jet screw in the spare carb will not budge either, obviously previous owner just swapped carbs then left it full of old fuel over the winter again also looks like the air filter has seen better days.
A Driver, mine was running rough. I’ve just replaced the throttle spring as it has stretched over winter, all sorted.
Hey mower man, loved the video it walked me through step by step and I followed it all. Only issue being that when I start my mower after servicing it, it only runs for a minute then cuts out. Any ideas?
Just saved me around £200 watching this video top man 👍👍👍
Excellent!
Didn’t have to take off the white float though to get to the centre jet should I have?
Lovely job. Great video. 👍
what in fact is holding the carb on is the fuel pipe from the tank, squeeze the clip on the carb end and ease it off. You can then ease the carb off the studs and flick the thin spring off and then the rod. Top tip, be careful with the pipe as they do go hard and will break ease it off with a flat bladed screwdriver.
Precisely. I serviced my Sp414 this weekend. Just disconnecting the pipe on the right of the carb. will ease removal of it. The collar that fell off is to locate the inlet gasket properly. The collar floats and goes on the carb first, not in the plastic cover.
Very helpful video pal
Thankyou very much 👍
I have this mower but i look after it and i think its a great little mower
Thanks Jamcone
It looks similar to the sovereign I bought that got stuck.. I changed the spark plug and it's still stuck ...great video
Had to bin my sovereign. It lasted 1 Yr. My rs100 mountfield has lasted 3yrs
Great video. Even better if you watch with the auto-captions on and it describes how you'll be showing us how to repair llamas for profit...
One pull, I love it!!!!
Nice one Paul .Pull the small red tab out of the carb spray nozzle then you can fit a straw.
Pete Froud Thanks Pete i'll try it!
Awesome video.
Would you have any idea what would cause the revs to fluctuate? Then when I go to cut it conks out.
New fuel line, cleaned the carb, am stuck as to why it does this.
Help appreciated buddy 👊🙏🏻
Hi,
Great video! I've just serviced my carburettor following your very easy steps. My mountfield rs100 still doesn't sound right though. I've got a video of it, is there anyway I can send it you and see if you know what's wrong with it?
Many thanks for the video again, absolutely brilliant 👍🏻
Awesome, thank you!
Hi Paul (The Mower Man) Just watched the video, superb instructions as usual, I have just done a service on my Mountfield 464 PD and it is running like a dream all thanks to your great tuition. Thanks again and keep the videos coming.
Glad it helped
Great video. I have a mountfield with RV100 engine. Fitted a new carb but it will only restart by using the primer bulb, even when warm??????
Great video one small issue you missed off the push in breather jet. You have to remove the idle screw adjustment to get it out. If this jet is block it can cause surging!
Great video, you’ve helped me a few times with different mowers. 👍 just got one of these cleaned carb and now starts but stops after 10-20seconds. Any thoughts much appreciated. Thanks
I think there is a small filter that attaches in the fuel line close to the tank. Pull the fuel line off and take it out then try it. Sounds like when the carbs full it runs
That's all very well and good... but how does one refit the drive belt which goes from the transmission box to the cutting blade?
Great video Mower Man. I have a Mountfield 414, stripped it and cleaned it with carb spray, put it all back together again, and it is still surging and hunting. Am I missing something? Checked the spark plug with multimeter, all fine, plus checked the ignition coil with multimeter, all fine there too. Bulb was pressing fine, no leaks and whilst stripping the carb down I could see the petrol seeping out when bulb was pressed. Any other suggestions?
Great video, thanks! Helped me diagnose and fix my mower's gunked up carburettor. Your website seems to be defunct - assume you knew but just in case you didn't!
Many thanks! Yeah the website dead! Appreciate the super thanks!
Hi there. Thanks for your great video! I've just got myself a secondhand HP414 which I was told was misfiring. It's missing the air filter and cover. I went to try to start it today and it caught fire at the hole where you can see the primer pumping fuel. What could be the cause of this? Some kind of seal or too much fuel in that hole? Any help would be greatly appreciated :)
Video came just at the right Time, Bought the same Mower Today the Self Propelled Model, Seller Bought New last Year, said He Paid £160 for it at B&Q............Petrol Pipe has split, so hopefully an easy Repair .
Pigeon World Forum Excellent should be a nice easy fix!
@@MowerMan I hope so Paul, lets hope there`s no hidden problems I don`t know about yet eh..........
The emulsion tube in carb throat pushes out with screwdriver once main jet removed if stubborn. Up top the plastic bit is idle jet , remove idle screw , n pry out , it has a tiny o-ring which carb spray can damage in same way as bowl seal. Heating them with hair dryer will shrink them
Great video thanks- so clear and well explained. I serviced mine new spark plug new fuel new oil serviced the carburettor starts perfectly runs for 30 secs or so and then cuts out unless you keep pressing the primer. Bought a replacement carburettor same problem. still cuts out after the fuel from the primer runs out. fuel definitely running from fuel tank to carb. have taken the in line fuel filter out and cleaned it seems to be ok .any suggestions @Mower man?
claire and rachel rw There is a fuel filter that rus out of the bottom of the petrol tank into the petrol line. It must be gunked up. There is a vid on micks mowers channel that shows it! Tell him i sent you!
@@MowerMan Thanks I will take a look. your help is much appreciated
Hi. I followed your video and cleaned the carb out along with checking fuel line. spark plug and fully emptying petrol tank. I'd got some oil mixed in with the petrol previously and it wouldn't start. Now it is starting but only runs very briefly before cutting out again. Could there be another blockage elsewhere?
Great video as always mate. I’m having real trouble with my mountfield mower and it’s starting to drive me mad - I’ve got no spark. I’ve replaced the plug, the coil and adjusted the gap between the coil and the flywheel. Could it be the the little electronic kill switch The is engaged by the leaver on the handle?
Before I realised there was no spark, I cleaned the carburettor and fuel lines 😫
most likely the little thin wire that runs from the kill switch to the coil. Let me know!
Really clear video. Thank you. My mower works fine but is ‘hunting and sort of surging’. Have checked spark plug, cleaned air filter, changed petrol. Do I need to clean the carb? If so And what can I use instead of forceps please?
Margaret Denning Yes you need to service the carburettor. If it has a diaphragm and gasket it will need changing! What lawnmower is it?
It’s the mountfield RS100 HP414. Which was why I watched your amazingly clear video.
Forceps advice ?
Great mate , well done 👍
Xerxes M Thanks!
Mower Man just finished the service and it was worked .😆 thanks for the video 👏🏻👏🏻👏🏻
Thanks, was given the self propelled version of this - same non starting issue which I diagnosed down to fuel in pretty much the same way (quite pleased with myself having now watched this 😂) - took carb apart logically - seemed very simple compared to the Briggs ones I have seen - all cleaned up and starts on the primer but won’t run 😢 have had the jet out and cleaned it again and again but can’t figure out why fuel isn’t being drawn up when running 🤔
I've got the same problem. Did you manage to sort it? I even put a new carb on as the old one was horrendous, but it's still the same.
@@andylees8735 not yet, it's on my list of jobs to do! I inadvertently ordered the same style carb but with a choke butterfly which wasn't obvious in the photos - oops - the casting seems to be identical as do the jets etc, but there appears to be an extra screw for adjusting something (high speed mix maybe?) which is blocked off on the old one. I was going to try to mix and match the jets, seals etc and move them over to the original to see if that worked, then worst case try to use the new one as it is...fortunately I was then offered another mower to get the jungle under control, again with a carb issue 🤦♂ which I managed to get going by jamming the throttle open with a stick once I'd cleaned it 😁
@@Umski Out of sheer frustration, I've taken the fuel filter off and redlined it best I could for a few minutes and now it will run independent. I think I have a similar carb to you in that it has some extra bits on it compared to the original. I've left everything as it was, although if that is a mix screw I might have a tinker with it.
Mine seems fine now its warm and I think the fuel filter might not have been helping. I'll have to get a new one.
Thanks for responding. The stick comment gave me a laugh. All approaches are valid if they work!!
😃
@@andylees8735 nice one 👍 thanks for the tip, I might try that too - could be that the fuel filter is restricting flow to the float bowl 🤔 I kind of assumed it was okay as the bowl was always full on disassembly but it could be just trickling I guess so on throttle it conks out…
@@andylees8735 so after your tip, I tried the old carb with the new black insert (my old one had a failed o-ring) - still no joy, so swapped out the main jet too and tried again. I realised it was just conking out due to the governor closing the throttle so I tried jamming it open which seemed to do the trick - I adjusted the idle screw where it's now running a fastish speed which prevents it spluttering out - it seems to run fine otherwise albeit sounds a little lethargic if it's loaded - I don't think it was the jet after all but didn't want to take it all apart to check again! So I've left it as is and did a few jobs - such a joy to use compared to the old heavy steel decked 18" one I had and even the other steely! That said it seems to clog up more easily on longer stuff and the grass collector is a little on the small side for me! Then just to annoy me I filled it up this morning and it started leaking under the fuel tank 🤦♂ - I found the filter as a result though - just need some new fuel pipe now!
Fantastic video! The pantomime part made me chuckle! That earns you my sub. I have this mower, an RS100 engine Mountfield HP41 and it fires and runs stutters and dies, tried cleaning the carb as shown and it works better runs for a little longer, but still dies. Just wondering if you could suggest what else to do? Did I not clean something properly? Thanks again for a Fantastic video!
Pull the fuel pipe off where it meets the tank and see if theres a filter inside the fuel line. Remove it if there is.
I inherited one of these from an artificial grass convert. It had a split fuel hose and has worked first pull ever since. Until I ran it on the bottle of petrol that lives on the bench for cleaning sticky marks. It was hunting which is why I’m here. Have tightened the carb screw to get it revving until the clean fuel finds it way round. How does the right angle part at 26:00 govern the running?