Petrol Strimmer bogs down, wont rev up. Simple DIY fix. VSG Ep60

A friend asked me to take a look at his petrol grass strimmer that wouldn't rev up. It was a simple fix in cleaning the carb. I also replaced the fuel lines and spark plug to give it a full service.

[@johncoyne9237]

At last fixed my strimmer, thank you so much for pointing me in the right direction!

[@vintagesteelgarage]

@@johncoyne9237 glad it helped

[@chris53small]

I know its 2 years on since this video was made but just want to say thanks for pointing me in the right direction. I have to non runner strimmers that fire but dont run so you have put together the most practical guide on trouble shooting that i have had the pleasure of watching so i am now putting my self on the subscribe list

[@vintagesteelgarage]

Thankyou very much for such kind words. Very much appreciated

[@jamiecoops]

Great video, I'd pretty much given up with my strimmer, but the carb adjustment screw worked and it can now rev up, thanks a lot.

[@vintagesteelgarage]

Glad it helped

[@ardvark1835]

For the first time in any strimmer videos , this Gentleman has shown the mixture needle , when the strimmer bogs down . I've thrown strimmer away because I could not fix the dam thing , when it always bogged . Now I will try doing the needle now . Great video .

[@vintagesteelgarage]

Thanks for kind feedback

[@ryan198t6]

You just saved me lots of money. Did all you showed and bosh! my strimmer is running a dream .

[@shaunh227]

Exactly what I was looking for! Your guide covers so many possibilities I’m confident I can get my neighbours strimmer fixed and returned now. Great video 👍🏻

[@vintagesteelgarage]

Excellent. I'm sure many have been junked that could have been fixed with a little basic maintenence.

[@GustavG10]

Thanks for the pointers on that mixture needle , it worked . It just needed a quarter turn and it revved up cleanly. It was a new strimmer too!

[@vintagesteelgarage]

Glad it helped

[@YeOldeChox]

Thank you buddy. Got my strimmer up and running now thanks to this video. 🎉🎉

[@willc1199]

Excellent, love the simple instructions. 👍👍

[@godhandneo505]

Good job, I've spent many an hour tinkering with our 20 plus year old dynamac db26 and it's still going

[@edcohen1980]

I had the same issue with the same model Strimmer - I'd tried everything else but removing that pin valve and reinserted it at the same depth also cleared the issue. Great tip to cut into the top of the pin to get a screwdriver on it too

[@ujenix1]

Had the same on my titan. Took mixture screw out and cleaned. Works like new again. Thanks for info.

[@man_v_snacks4299]

Absolutely brilliant breakdown, cheers

[@terrynicklin417]

Many thanks for the brilliant tip about the mixture screw! I'd spent ages trying to cure the problem of no power when applying full throttle, and thought I'd tried everything. I also blew out the carb with air and now all is well! I had to unscrew the mixture adjuster a little to get the hacksaw onto it, and did this using circlip pliers (after noting how many turns to bottom of course!). In my case it was about 1.9 turns to bottom, similar to your figure of 2 turns. Only problem is, now I have to cut the hedge!

[@vintagesteelgarage]

Glad it helped

[@chippytea5737]

I love you! Well, nearly. My Aldi multi-tool thing had the same problem and I did the same things you did, but nothing helped. Watched your video and managed to adjust that mixture screw just a little with a stiff wire, then turned it back to where it was.. and now the thing is revving like a good 'un. Cheers!

[@ThePepperford]

Same issue. Was ready to junk in anger 🤬, but I'll try this first 😊

[@allthegearnoidea6752]

Nice to see all those parts you didn’t need very Generous of the manufacturer’s. I think in many countries it is the law that the carbs have no adjustment apart from idle. Time to buy that ultrasonic tank.Great video thanks for sharing

[@vintagesteelgarage]

No need to buy I'll just borrow yours

[@mihak.9482]

Thank you very much sir! Just fixed two of my strimmers, which had the exact same problem as yours.

[@vintagesteelgarage]

Excellent glad it helped

[@ShivanKishan]

Thnx. Same model als hornbach blackline bl-bs-25.

[@markpulling12]

Same problem same b and q strimmer Did the mixture screw .. . perfect absolutely brilliant thanks 👍

[@gainmaster1]

cheers for pointers, my one running very rough, need to find out issue

[@paularmstrong3643]

Very informative I'm having a go at a mcalister b&q special tomorrow 👍

[@Autonomous1969]

Exact strimmer I have and the same problem too. I'm looking at it tomorrow.

[@danmccann6100]

Great video, really clear way of demonstrating the process of elimination. Thanks.

[@vintagesteelgarage]

Thank you

[@gazbgroundwork1123]

It worked! It was the mixer screw had to file a groove in it like you said. Cleaned it out and tighten up slightly. Thanks.

[@vintagesteelgarage]

Glad it helped

[@thedj5914]

Here's hoping 🤞 thanks again for the video. So I put fresh fuel, cleaned the spark plug, reset the idle screw & nope, still the same , hoping this mixer pin will do the Job 👍

[@tonymac7706]

Superb....well put together and explained in layman's term's.

[@vintagesteelgarage]

Thankyou

[@Chris-techgamesfood]

Thanks mate! I’ll try this out tomorrow!

[@colicarot]

Well done on this one ! I had the carb apart I don't know how many times and i'm well experianced on engines, never thought of this one though . Saw slot on the screw blew it out and couldn't believe it , ran like a new one, whats worse is I've already ordered a new carb, (what a dimmo eh ) Great Stuff !!!

[@vintagesteelgarage]

Glad it helped

[@tonykett]

Bloody excellent tutorial. I'd like to thank you very much for that.mustve taken you a while to put together. My cg520 is now running (fuel exhast starved)...just dragged it higher into the tank...I had no idea what to attack.

[@vintagesteelgarage]

Thanks for feedback and glad it helped.

[@dincaiulian8808]

Well done

[@michaeldominy2084]

You , had, the exact same as me, but will now try you mixture screw removal, and replace.🤔let’s hope,👍

[@gerardorourke7696]

Super helpful 👍👍👍👍. Thank you.

[@eddiegunn5517]

great video . thanks

[@MarkSmith-hg9vr]

Cheers mate every thing we need to know 👍

[@presidenterectbeijingbiden1125]

Nice informative video. Just getting into fixing these things myself and I love it. Fixed my dads lawnmower and strimmer. Just bought myself a baeko 4 in 1 from ebay for 10er as the pull cord isn't retracting. It'll be here tomorrow. Hopefully that'll be the only issue, if not I'll follow these steps to get it running. 👊🏻

[@vintagesteelgarage]

Thanks for feedback.

[@malcjessop9113]

Worked. It was the idle screw rather than anything else.

[@JeffersS13]

I’ve had this before, strimmer idles but then bogs down when at full throttle. I dismantled the carb and I found a whole load of gunk behind the gauze strainer/filter that is immediately next to your left index finger at 8:22. You can very carefully pry it out without damaging it, either pick or blow the gunk out and then just reassemble. Strimmer runs like a dream again.

[@kevinwonnacott7640]

Great video

[@vintagesteelgarage]

Thank you

[@bartrobz9702]

Awesome vid 👌 I have 2 with this exact problem they’re relatively new as well 🙈 I’ve tried cleaning the carb’s changed plugs I didn’t even think about the breather tube 🙈 can’t wait to try that and the mixture screw I have nitro rc car,s can’t believe I didn’t think of the mixture screw 😂 appreciate the info clear and to the point keep the vids coming just subbed 🙏👌P.S I’ll come back and let you know how it goes 😂😂

[@prawnyb]

Top notch mate 🤙

[@davidmartin1093]

That strimmer will bog every time if you leave the choke on and squeeze the throttle. As soon as it fires with choke, go to mid choke and let it rev a little for a minute to warm up then slide the choke off. I have been using the same B&Q strimmer for 8 years now, I need to change the fuel lines every other year...👍

[@ryanlee9139]

@davidmartin do you still have the same strimmer mate

[@ryanlee9139]

Mine bogs off everytime the chokes down. Recently just changed over to new fuel as it was sat for a year

[@vintagesteelgarage]

@ryanlee9139 no gave it away

[@stuartashworth6982]

Had exactly the same problem. Did everything and still the same until the mixture screw trick. Ye hah now works perfectly. Many Thanks

[@vintagesteelgarage]

Glad it helped

[@hoogerbooger5862]

Nice to see a video with all the mistakes not cut.......how often have had to search the messy floor for an escaped nut? !!

[@vintagesteelgarage]

Yes correct. This is real life.

[@linsleydiasdorosario1131]

Thank you for saving the day 😁

[@vintagesteelgarage]

You're welcome

[@-Unlucky-82]

I got the same problem with hedge trimmer. I did everything you did already but I not took that screw out so I am hoping if I do that today it may work.

[@rogercamp2910]

Another point to check is the muffler spark arrestor. If it is blocked then discard and leave it out. 8 out of 10 times this is the problem.

[@patsteel5160]

I have the same problem with it will try to put a slit in the carb

[@frankvoci9175]

Molto bravo, davvero un ottimo lavoro.

[@vintagesteelgarage]

Grazie

[@frankvoci9175]

prego 🙂

[@xsb51]

Just about to throw away mine though i would try the mixture screw half a turn in and now it runs like new nice one.

[@vintagesteelgarage]

Pleased it worked for you.

[@oopoopod]

No favorable editing there 😉 Nice informative video pal keep up yr good wirk

[@reecevansanden]

Nice one. No waffle.

[@vintagesteelgarage]

Thanks

[@carljones1756]

Hello, great video but i'm still stuck. I am currently in Nepal trying to help out a small NGO. Their strimmer bogs down when trying to accelerate... have done everything like you but simply cant find any screw or other way of ajusting the mix... only one screw on the carb for the idle... any ideas? Thanks

[@erniefasbender4939]

Hi...good video! I've got a strimmer and the fuel pipe is leaking but not sure what size diameter pipe is. It's similar to yours but not exactly the same. It's made by Power tools. Any idea what size please mate?

[@piecetoyou8285]

Usually what`s over looked if your having problems like this usually a fuel cap issue` you should do a pressure and vacuum test with cap on the fuel tank . disconnect the fuel line and return line and connect them to the tool, to do the tests

[@vintagesteelgarage]

Yes good tip. Another tell tale is when you release the cap and you hear air whoosh in the tank.

[@andrewbarnard2148]

Mine let's air in/out when I unscrew the cap. What do you think is the problem? Suction in the tank starving the carb?

[@piecetoyou8285]

@@vintagesteelgarage yes correct,

[@markgriffiths5911]

You would have fitted in well at Longbridge...and you made me laugh .was that intended..but you were very informative I've been gardening forty odd years and every machine needs love and attention .my strimmer was serviced by a cowboy .and I've just adjusted it yesterday with a minute turn off the screw and my god what a difference. I'm trying too find the adjustment on my petrol hedge trimmer as she running slow,brought for £15. I've already changed plug filter,pipes,any suggestion..

[@vintagesteelgarage]

If 2 stroke and left a while fuel evaporates off and leave oil in the carb. Strip and clean the carb as a starting point.

[@leepagett5577]

Like to see more

[@vintagesteelgarage]

Do you more of this or like this getting old engines running.

[@danwxm1986]

Mine had a broken gasket between the engine and carb making it bog out when reving i think the pressure was escaping, its now working well without the gasket for now 😂

[@veritasaequitas9875]

My problem is the engine won't turn over with the pull string. It near breaks your fingers. It's fine when the plug is out no problem. It's weird. It's like the compression is massive.

[@vintagesteelgarage]

Does it have a long reach plug and it should only be a short reach hence increasing compression?

[@lisanash258]

Would you be able to answer a question I have, I recently brought a petrol strimmer from SGS engineering and I had to return as the unit was too heavy for me to use. When SGS received the item back after I confirmed I did not use it try to, they are saying as there was fuel in the priming bulb they can not expect my return as they are saying I put fuel in it, and attempted to start it, which I did not. My question is would there still be fuel in this bulb left over from SGS testing this unit as surely they would have tested it. I would really appreciate your thoughts why there is fuel in the priming bulb. Many thanks.

[@vintagesteelgarage]

@@lisanash258 I would have thought there could be a small amount of fuel remaininf from when tested by the manufacturer

[@michaeldominy2084]

What air system are you using, it’s quiet, and not too forcefull.?

[@vintagesteelgarage]

Small portable compressor at only about 50 psi

[@danielb350]

Do you know where I can buy this carburettor from? My screw has rounded off !

[@vintagesteelgarage]

First place I would look is ebay

[@YeOldeChox]

I got same strimmer How do i get to spark arestor. How did h take that whole part off

[@bonkeydollocks1879]

2 bolts hold the exhaust on

[@plugtheheliflyer]

I've been having trouble with my spear and Jackson spjgt26 petrol strimmer. It starts up but give it some gas as you say it bogs down. I've put a new carburettor on it new plug set the gap new air filter new fule pipes and filter fresh petrol. And the thing still bogs down. I've set the mixture screw can you or any one help me before I throw it over my neighbour fence.

[@vintagesteelgarage]

Check exhaustis not blocked or carboned up. There a spark arrest in the exhaust on some that can be removed for cleaning.

[@plugtheheliflyer]

I forgot to mention that I did that as well

[@vintagesteelgarage]

@plugtheheliflyer oh..... I've the fence it is then!

[@chrisgomersall6179]

Hi could u fixs my outboard

[@CORRIGEEN71]

My prime bulb is burst it starts but Biggs down ni power under load ??

[@vintagesteelgarage]

Could be sucking in air though blub. You can buy them on ebay

[@kierenhudson6331]

I used my strimmer for 3 months but my dad forgot to mix in any 2 stroke oil. Now ots broke. What's likely to need replacing? TIA

[@vintagesteelgarage]

2 strokes need oil to lubricates all the engine, as there is no sump with oil in. So likely to have seized the engine or increased engine wear. Does it turn over easy when you pull the cord?

[@kierenhudson6331]

@@vintagesteelgarage yet but no spark or throttle. The engine was making a loud revving sound before it stopped working.

[@jameskilcullen8018]

Take the exhaust off, look inside the cylinder, pull the cord slowly, if you see any grooves/scratches in the cylinder or on the piston , it’s an engine change

[@kierenhudson6331]

Thanks for the advice. I've managed to fix it. I asked my dad to strip the engine new carburetor and new spark plug. No problems now. 😊

[@mattyt6986]

@@kierenhudson6331 next minute your dad starts stripping your car hahaha

[@acostin4004]

ive just fitted new carburetor on spear Jackson and it just dies after reving it the new carb has only 1 screw for fuel flow what could it be.

[@vintagesteelgarage]

Sounds like fuel starvation. Will it tick over OK?

[@acostin4004]

yeah it starts no problem 1-3 pulls runs ok on full throttle then after 10secs just dies.

[@vintagesteelgarage]

@@acostin4004 see if it will run with filler cap off, sounds like its struggling to pull fuel from the tank

[@acostin4004]

yeah it runs for about 3-5 mins without filter then starts bogging down then dies completely. ive noticed fuel filter has dropped off in tank i bought on ebay cheap fuel line kit last year however after only 12months they eventually failed broke into pieces fuel additives must of corroded them away cheap crap the original lines were stiff and rigid lasted 10yrs but unable to find high quality like original cant see a missing fuel filter causing it to die.its a strange one even after adjusting carburetor screw that makes it run on full pelt but not for long minutes later it starts bogging down again any other suggestions. really i need a stihl proper job or honda but their not cheap..👍

[@vintagesteelgarage]

@@acostin4004 yep. Cheap hoses don't last long. So you have new hoses and new carb but still dies?

[@fredjensen5331]

where do get a carb from for a fiver please

[@vintagesteelgarage]

I got it from ebay. As a pit bike carb

[@dincaiulian8808]

I hawe similar problem but litlle complicated

[@vintagesteelgarage]

What's the problem your having

[@dincaiulian8808]

It's start but when I leave the handle to start to cut its die

[@vintagesteelgarage]

@@dincaiulian8808so it won't idle but runs OK when you rev it up?

[@dincaiulian8808]

I solve the problem I buy Pac mac key and everything it's ok

[@dincaiulian8808]

Its working perfect like new.... I keep all my stuff like new... I was surprised to see its not work.... But with 13£ I both the key s from amazon and fix the problem

[@alan-yh9by]

There are 4 stroke strimmers

[@vintagesteelgarage]

Yes true. They are usually more expensive. That's why most are 2 stroke.

[@michaeldominy2084]

You are just like myself, annoying ain’t it.🤔😊😊