Sharpening push reel mower // Backlapping my Gardena 400 C

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Hey Everyone, Time to do some backlapping of my push reel mower. My Gardena 400C really was due for a good sharpening. This was actually my first time ever doing backlapping.
So this video really shows that anyone at home can do backlapping and your cylinder mower will be in much better shape afterwards!
Grinding paste I use in the video:
Only available in Europe: amzn.to/3kGAW1y
This one is available in the US and works just as good:
amzn.to/3ulvJ2r
Gardena 400C push mower: amzn.to/3vmG6DS
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Follow me on Instagram: / samslawn_sweden
*DISCLAIMER: If you purchase something through one of the affiliate links, I’ll receive a small commission. This helps support the channel and allows me to continue creating videos like this. Thanks for the support!

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Опубликовано:

25 сен 2021

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Комментарии : 97

@Thelawncarenut 2 года назад

"I don't mow that low, but I mow alot" - Sam 2021 🤘

@SamsLawn 2 года назад

haha 😂

@gergemall Год назад

Thanks l appreciate it. Beautiful lawn

@osmoseGrafik 2 года назад

I will certainly never do this but the way you make your videos keep making me watching them and it’s so enjoyable. It’s really nice to watch someone with so much humour and self derision. Thank you 👍👍

@SamsLawn 2 года назад

Haha thanks man, really appreciate it. You got to have fun with it and not take yourself too seriously, glad you get it man 😁

@harryhalfmoon Год назад

Thank you for that! Just what I was looking for.

@SamsLawn Год назад

Awesome Harry, glad it helped!

@isleygao5866 Год назад

Great video. Super informative and easy to understand. I came here because I just got a reel mower and was confused how backlapping works. Other videos did not explain that the bed knife is what sharpens the blades. Thank you for explaining the mechanics of what is actually happening when you apply the paste to sharpen the blades.

@SamsLawn Год назад

Hey mate, thank you very much, really glad you found it helpful. Good luck with the backlapping and watch those fingers! :)

@SamsaekSandwich Год назад

Managed to get it done with a deep 21mm socket and a hex drill adapter. Tried a regular socket at first and it didn’t work, has to be a deep one. I used chemico 120 grit back lapping paste as it’s available in the UK. I just used an adjustable wrench to make the small adjustments to the plate position rather than a socket. I was a bit concerned it wasn’t working because I was struggling to get it to do anything to paper except fold it, but after rinsing it off and trying on grass it’s much sharper now and usable again. Thanks for the video, very helpful!

@SamsLawn Год назад

Awesome mate! Glad it finally worked! It does feel so nice the first times you use it after a backlapping, feels so smooth! :)

@ewingtaylor5487 Месяц назад

A simpler method - remove the turned-over blade edge burr (a primary cause of the non-cutting) by running a small hard White Arkansas sharpening stone along the blade length, restoring the sharp right angle blade edge which produces the cut. Same approach as sharpening thin speed skates blades - which are flat and polished on the very bottom (for speed, naturally), and cut into the ice using a very pointy right angle blade edge - made by removing the burr produced from running a large stone back and forth along the length of the skate blades. A very fine file could used in place of a stone for reel lawnmower blades.

@SamsLawn Месяц назад

Sounds like an awesome way to do it too!

@RobinHedstrom 2 года назад

Perfect! Now I know how to do and don't have to figure it out myself. Thanks!

@SamsLawn 2 года назад

Would like to see you backlapp your Gardena too, see how a pro does it. First time ever i did it, felt a bit sloppy :D

@alceja3522 2 года назад

500th sub!! 👏🏻 well done Sam!!

@SamsLawn 2 года назад

You will always be my no 500 now Al! :D Thanks a lot man, appreciate it 🙏

@itsacrazyworld4958 12 дней назад

😂that was an enjoyable demonstration Sam. I think I will brush the lapping compound on before starting to spin with the drill quickly, that looks a little dangerous for my clumsy hands. Appreciate the tips!

@SamsLawn 10 дней назад

Thanks mate, glad you enjoyed the video :) For sure, that sounds like a good way of doing it if you do not want to risk losing any fingers :)

@bassebonnlapp-officiella 2 года назад

Trevlig video med mycket bra information.

@SamsLawn 2 года назад

Tack Basse!

@aquienpuedainteresar4188 2 года назад

Just in time. I need to sharpen mine.

@DudumanBogdanVlad Год назад

Thanks. I managed to do it. Initially I was moving the wheels in the opposite direction and no results. Watched again, saw how the wheels were moving and after 5 minutes, I did the paper cut test and ❤. Thank you!🎉

@SamsLawn Год назад

Awesome mate, good job! :)

@apmgold 10 месяцев назад

Very informative video, presented in a light friendly manner. Thanks Sam, it's much appreciated. BTW I'm a new subscriber now, keep up the great work.

@SamsLawn 10 месяцев назад

Thanks mate, appreciate it! Glad to have you on board, hope you find the videos helpful :)

@PacificNorthwestLawns 2 года назад

Great video Sam! I should do this with my manual reel mower but I really don't use it much at all.

@SamsLawn 2 года назад

Thanks Nate, appreciate it. You should use it, it gives a great cut, but your back will take a beating :D

@TheLawnShark 2 года назад

Good stuff! I will be doing this to my manual reel at some point. Thanks! Also, I subbed to your channel Good stuff.

@SamsLawn 2 года назад

Thanks man, really appreciate it 😁

@TheLawnShark 2 года назад

@@SamsLawn Absolutely!

@johncanter9575 2 года назад

Great video… really nice channel.

@SamsLawn 2 года назад

Thanks John, really appreciate it mate.

@SunnyBermuda 2 года назад

🌞Just subbed! Great video! Glad to see you didn't lose a finger!

@SamsLawn 2 года назад

Thanks man, appreciate it :D

@sophievandevelde6269 Год назад

Merci pour cette vidéo idéale pour les nuls comme moi. J'en avais vraiment besoin pour démonter cette tondeuse. 👍

@SamsLawn Год назад

You are most welcome, glad you found it helpful :)

@kimandredybdahl9304 10 месяцев назад

Bra video Sam. Jeg gjør det på samme måte med min 400c 😃👍

@SamsLawn 10 месяцев назад

Grymt, bra att det fungerade, visst är det en skön känsla första gången man klipper när den är precis backlappad? :)

@TheMdewell Год назад

Thanks for the video. What direction should I have the drill set to?

@SamsLawn Год назад

Hey Matt, thanks for watching mate. You should set it to reverse, or backwards. It's called BACKlapping, so the cylinder needs to go backwards to be sharpened 😊Watch the fingers! 😉

@x.Prep.Tastic.Sophia.x Год назад

Great explanation and teardown. The gearwheel driving the keyway cam is it hard plastic. I had a bosch pushmower and the plastic gear git chewed too easily.. How well does same gearwheel on gardena hold up

@SamsLawn Год назад

Hey mate, thanks, hope you found it helpful 😊 It's a metal piece, haven't seen any wear and tear yet, and I had it for 3 years now. Plastic sounds very optimistic by Bosch 😉

@x.Prep.Tastic.Sophia.x Год назад

@@SamsLawn Bosch consumer grade pushes the limits at times.

@bertprendergast4120 Месяц назад

That pin was so easy; mine had a little wire clamp and when I tried to remove it I lost it lol

@SamsLawn Месяц назад

haha I feel your pain mate! I don´t know how many small fiddly things I have dropped, lost or misplaces. I am actually surprised I haven´t lost that little pin yet 😅

@doomality 2 месяца назад

i've watched like 12 videos on this same subject and you have the best one. good work. very descriptive and illustrative. stupid question, but can you provide a link for the power drill that you use? what size bit did you use?

@SamsLawn 2 месяца назад

Hey Mate, I can't put in links, youtube just removes the comment, but the model is DDF484Z, had it for 7 years and it still works as good as day 1, love Makita, such good quality. The socket I use is a 21 mm or 13/16" however, that might differ if you have some other model. Glad you found the video helpful 🙏

@chupacabra7224 19 дней назад

Hello sit I just bought myself gardena 400c, and as soon as I put in on grass, it's cutting unevenly and stock sometimes. What is the problem. Grass aren't even that long. I cut them 3 days ago

@SamsLawn 16 дней назад

Hey mate! Have you done a paper test? To see that the blades are sharp, and even? If not, then you need to adjust them on both sides until they cut evenly. I know when I got mine it was not even at all, I had to adjust the blades since they were uneven from the factory.

@rillesni1 Год назад

Really like your videos and your lawn, Sam! I have the same model and Im in the process of getting this done!💪 Did you loosen up the blades after showing that it could cut with a terrible noise or did you go with that setting when you applied the paste and got to backlapping? Hard to explain in english, but Im trying to be a bit international here!😂😂 Keep up the good work! Rikard, Kungälv

@SamsLawn Год назад

Tjena Rikard, inga problem att skriva på Svenska, så internationella behöver vi inte vara i kommentarerna 😁 Kul att du hittat till min kanal! Förstår din fråga helt och hållet, jag ändrade inställning och flyttade bladen lite närmare till och med, just för att hela bladen ska ha kontakt med "underkniven" så att säga. Dock handlar det om små små små ändringar, så skruva försiktigt, så får man testa sig fram. Hoppas det går bra och har du fler frågor är det bara att återkomma 😊

@madsenification Месяц назад

I have the same mower - the wheels are sliding over the grass, so it is not working very well - any tips?

@SamsLawn Месяц назад

Hey mate, hmm not sure what could be wrong, might be worth opening the wheels and checking that the gear can move freely, try rolling it with the wheel off and see if it moves. Might be stuck or something like that or in need of some lubricant.

@SamsaekSandwich Год назад

Really useful video, thanks! Do you know the size of the two sockets? As I don't have a socket set and don't really want to have to buy the whole set

@SamsLawn Год назад

Hey mate, glad you found it useful! I used a 21 mm or 13/16" socket, fit perfectly.

@SamsaekSandwich Год назад

@@SamsLawn Thanks, glad I asked cos I tried to measure it and I got 23mm!

@paulhopkins686 2 года назад

Have you compared the push along to a petrol mower?

@SamsLawn 2 года назад

Hey Paul, I don't have a petrol mower, I have a robomower for when I'm not at home or off on vacation. Maybe I'll do a comparison between them. Good idea!

@jasasyiken5561 10 месяцев назад

Great video. Out of the box, my unit failed the paper test. Strangely it cuts on both sides but not the middle of the reel. Not sure if I should do this process or something else is misaligned. The instruction manual actually says loosen both left and right bolts then slowly tighten only the left bolt until it barely touches. Do you adjust both sides or just the left according to the manual?

@SamsLawn 10 месяцев назад

Hey Mate, hmm I would say it sounds like the bed knife might be bent, if it cuts on both side but not in the middle it usually is the case. Take something straight and put it against the bed knife and check. If that is the case you will need to get it to a professional and get it re-ground.

@jasasyiken5561 10 месяцев назад

@@SamsLawnHi. Thanks for replying. What I have done was to loosen the bed knife (release the tension) then carefully tighten it back. Then I adjusted the blade to make sure the center touches the knife. This made the 2 ends very tight. Then I did a back lap following your guidance. And now it cuts paper clean throughout. Even if there is a bend, it’s very minor do the backslapping corrected any inconsistency. Very Happy now. 😊

@SamsLawn 10 месяцев назад

@@jasasyiken5561 Awesome mate, glad it works now, now you can mow EVERY day :D

@ragnarferrand-drakedelcast6337 2 года назад

Thanks for the video! What diameter does the screw driver's connector need to have to get good contact with the lawn mower? Sorry, don't know the correct words to describe in detail.

@SamsLawn 2 года назад

Hi Ragnar, thanks, glad you liked it. No worries, I understand what you mean :) the socket I used was 21 mm or 13/16" however, that might differ if you have some other model. Hope this helps Thanks for watching and the follow, appreciate it 🙏

@ragnarferrand-drakedelcast6337 2 года назад

@@SamsLawn thanks, once I get a hold of such a socket I should be able to reproduce what you've so elegantly demonstrated! :)

@SamsLawn 2 года назад

@Ragnar Ferrand - Drake del Castillo Fully confident you can do it, if I can, everyone can :D Just be careful with your fingers dude haha, let me know how you do.

@ragnarferrand-drakedelcast6337 2 года назад

Thanks 21 mm socket worked perfectly! Very satisfying to do it by yourself!

@SamsLawn 2 года назад

@@ragnarferrand-drakedelcast6337 Awesome man! 🥳💪🏼 I know right, you really get the "handyman" feeling 😁

@mikebond3732 2 года назад

SAM,WHAT ABOUT THE MULTI-SHARP 1109 MOWER SHARPENER YOU CLAMPON BED KNIFE & ROLL MOWER TO SHARPEN?! MIKE BOND 007!

@SamsLawn 2 года назад

Hey Mike, hmm not sure, I mean, that one seem to require to take off the bed knife, the blades etc, seems more work? But then again, never used it, so couldn't really say. If you do use it, let me know how it works out :)

@MischaGielen Год назад

Nice and informative video Sam ! You mow this whole lawn with a hand mower? Or you get help from what I think is a robot mower in the top left corner of the video (at the end)? 😁😉

@SamsLawn Год назад

Hey Mischa, I actually mow it all by hand pretty much all year, good catch mate haha, It is a robomower in the corner. But poor thing is only going 3-4 weeks per year during vacation when I can't mow myself :) Actually got tired of mowing manually so I bought a new mower, hopefully I can show it soon :)

@MischaGielen Год назад

@@SamsLawn Looks like a pretty large lawn to mow by hand! Today I mowed my lawn for the first time, but with a cheap cirkel mower I bought to fight the jungle in my back yard until now. Inspired by your video I'm search for a manual, or when I can find it an electrical, cage mower.

@MischaGielen Год назад

@@SamsLawn one more question: where did you purchase the grinding paste?

@SamsLawn Год назад

@@MischaGielen Bought it from Amazon, the link works if you are in the EU, but the same doesn't seem to be sold in US.

@naifchoudhury1746 2 года назад

What is the size of that socket please?

@SamsLawn 2 года назад

Hi Naif, the socket I used was 21 mm or 13/16" however, that might differ if you have some other model. Good luck and watch the fingers mate ;)

@fredrikhilton1431 2 года назад

Tror du man kan göra samma sak med batteriemodellen? Bra video 👍

@SamsLawn 2 года назад

Tjena Fredrik, absolut, det kan man göra. Bara att ta av däcket och hitta axeln, så är det i stort sett samma sak. Eventuellt lite mer skruvar och sånt för att komma åt än en manuell handjagare. Tack, uppskattar att du tittade förbi 😊

@MihaiAdrianNegru 2 года назад

I have tried to sharpen mine but I don't have the right drill head. Do you mind sharing yours?

@SamsLawn 2 года назад

Hey Mate, I use a 21 mm or 13/16" for mine, hope that works for you.

@MihaiAdrianNegru 2 года назад

@@SamsLawn Thanks. Appreciate it. I have watched this video several times. Extremely helpful :)

@SamsLawn 2 года назад

@@MihaiAdrianNegru Awesome my man, glad you find it helpful :)

@nirmalak1646 9 дней назад

What size socket?

@SamsLawn 8 дней назад

21 mm or 13/16 deep socket

@nirmalak1646 8 дней назад

@@SamsLawnthank you!

@user-zg8dq2er2o Год назад

Tjena, Tittade på ditt klipp och försökte göra det. Men vafan, axeln är ju rund?! Vilken hylsnyckel använde du? Och hur fick du den att fästa i axeln? Och vad använde du för insats för att få den att sitta i skruvdragaren?😂 vill du länka hade jag varit enormt tacksam

@SamsLawn Год назад

Tjena Simon, jag undrade också första gången jag öppnade den, men jag hade en skiva som gick igenom den runda axeln, en tunn liten liten skiva, som gör det möjligt för en hylsa att fästa. Jag trodde den var nödvändig för att hjulet öht ska snurra? Har du inte den skivan? Jag använde iaf en 21 mm eller 13/16, passade perfekt till skivan som går igenom axeln. Såg dock på facebook en kille som hade skurit av en trädgårdsslang och satt klämmor runt axeln och en hylsa, för att kunna snurra den. Så prova det om den där lilla skivan inte finns på din. Hoppas det fungerar, återkom gärna och berätta hur det gick! :)

@possible1337 27 дней назад

Vilken storlek på hylsan med skruvdragare har du?

@SamsLawn 23 дня назад

Tjena, jag använder en 21 mm hylsa.

@possible1337 23 дня назад

@@SamsLawn okej, jag får inte ens av sprinten på min 380 Li ... får av kåpan sen kommer jag inte längre

@SamsLawn 23 дня назад

@@possible1337 Den var lite lurig att få av tyckte jag, speciellt första gången man gjorde det för den satt åt ganska rejält. En bra tång och platt skruvmejsel så gick det till slut.