Free Bolens trimmer fix 

Good fix, It is worth fixing equipment for little money instead of filling the landfills. Thanks

I want to thank you for your videos, you really help me work on small engines.After my hart attack i have to do something else for money to come in.You make it a lot easier for me and I appreciate it.Thank you and keep up the good work..

Wow, I have that exact trimmer; have used it for almost 10 years, and just replaced it with the straight shaft version. I couldn't ask for a more useful video! Thank you so much for sharing 😊 Last year I replaced the tank and fuel lines as they had turned to dust. Am keeping it for parts for the new one.

Anytime you can renew something is a good thing

The "Guru of Grass Trimmers" does it again!!!

Thanks so much for this video.Was able to replace the carb on existing BL-100. You saved me probably $ 100. Thing runs like it is new again. No other video explained the fuel lines as well as yours did.

A major design flaw with these is the plastic bracket/crank case cover. You will notice there is a large piece that protrudes where the carburetor attaches. This eventually cracks due to vibration. I had one with a hairline crack right at the base. That was leaking air causing the machine to run very strange. Drove me nuts.

That's a good fix for a free trimmer. Your videos are really good. Thank you.

It was a good thing just to get it running. Keep it or flip it depends on your needs and opportunity. Your sensible troubleshooting and the clear narration keep me coming back to your videos. Good work and thanks for sharing.

Easiest design ever. Totally worth fixing since the engine is good.

Any time you fix one of these, it's better than throwing it in the land fill. Sadly, most small engine shops charge what it costs for a new trimmer just to repair these. I know many shops now refuse to even work on them. I can usually buy a replacement carburetor with fuel lines, air filter, spark plug and whatever for $12-$14 . I rescue them whenever I can. Nice video.

Fix it all day long.. a nice fix and great video.. hope all is good mate

Top video mate and what I like about most is that you mention the cost for the parts you used and the time it took you to di the job. Keep up the good work.

Great fix and well worth the money to fix this little gem. Love your video's.

It's worth fixing for that small amount of money & I've managed to pull those kill switches apart & clean them out so I didn't need to replace them. They end up full of dirt & grime therefore they end up having a bad contact !

Lol It's funny that you are repairing the exact same type of trimmer that I purchased on eBay last year. It did not have the bottom shaft, spool cover and the clutch for my project trimmer. Well after reinstalling and fixing everything. It started to have issues with the pull rope mechanism. Actually, the gear started to slip inside the casing. Finally I got that fixed then I started to have issues with starting. At first it would start and stay for some time and then all of a sudden the engine shuts off. Not sure what's really happening? But now after looking at your repairs I think I should inspect the carburetor and see if there is any problem with it. Hey it cost me total of $70 and still not fixed. Your free trimmer is worth the repair for sure! I found out that I could buy almost new for about $89 LMAO! Well lessons learned!

Unfortunately I find here in Australia if it’s not one of the popular major brand machines...parts are hard to get !

Hey HG, I got one lately ,exact, but I try to open the carburetor and got one joint broken, Anyway I don't have the tool to adjust the H and. L screw ,,have to get a kit

I'm glad you fixed it

Interesting and helpful video. Had to subscribe, I have an old trimmer that I left fuel in and need to rebuild so I have 2, one with line and one with plastic blades.

Absolutely fix it!

Fixing or recycling is always preferred.

Absolutely was 100% worth it

Fixin is the goal . Great vids by the way most enjoyable to watch cheers

Got used BL110 Bumper not wanting to come off. Also after changing lines and filter added new 40-1 gas I ran it about 20 to 30 min was hearing it tending to -occasionally bog- but keep running the it cut off. Otherwise, it ran great other than the late bog. Planning to check it later. I do think it might be it was very hot day. Have you done a number trouble video? Thanks.

Great question. I do this as a hobby like you so yes it's worth it. However if you were to do this repair for a customer and charge for your labor it would exceed the value of the machine. I usually buy a kit and install it and charge $40 for people who want to fix their trimmer.

I got Ryobi 775R which is same as Bolen. After throwing it out in the curb, decided to bring it back and fix the fuel line and carb. Thanks for the great video. Would say these 31cc weed eater has one of worse design and absolute pain to work on it (compared to modern weed eater).

Keep it, It's working fine.

Thanks for the great video. I was able to replace the old with a new carburetor however, it still didn't start. checked spark plug and cleaned it a little bit. Still, didn't start. used some starting fluid, it starts and stops. Now what?.....

it,s worth fixing these up and yes i would most surely get them going again no worries as our legendary Ryobi Weed Wasps also are the same engine designs here in Australia and very popular too compared to the stuff sold today mostly Chinese made Garbage unless it,s worth fixing up etc.

Always fix the old if possible. Thanks and Blessings!

great video. i have the same issue and even after replacing the carburator it leaks at the rear. runs and dies. super annoying. even with the new carburetor.

Sweet repair

In my opinion that thing is a god-awful trimmer just by the way it's designed. But as far as cost-effectiveness goes you absolutely did the right thing as far as just fixing it, but I don't know if I would have gone through all that personally for that trimmer unless I plan on selling it..

Make more free engine fixes

Great video, thanks 👍😀

Good 😌

For how good and clean this one looks makes me think these are really crap junk that it broke so quickly. I had same issue with mine , hardly use and after a while won't start. Pushing me towards electrics in many cases. I follow your videos becuase you show how to easily start so 4 times a year I pour some gas into the air intake and whola

We used to have one of these, but it was the Troy-Bilt version. The engine is so strange how it is designed, it is also pretty ugly looking at the back

Depending if you can afford a new one I say go for but if not then spending $15 to get this machine back up and running is very good in my opinion

Always worth fixing older "crap", because the newer stuff is worse "crap". Myself I stick with Echo "crap", Because it seems a little less "crappy".

I mean carb cleaner is pretty usefull, it cleans very well, u can use it as starting fluid, it disolves stuff..

I used a magnet to hold small parts,, find them always,,,

Mending is better than ending !!! :)

I'm still surprised it stayed running when you put fuel into the carburetor for so long

Is carburator an fuel lines generally the problem? Have several trimmers people have given me. Would rather fix them than throw them away.

Hey my name is Ronald. Nice video. I would love to know the name of that tool to fit the carburetor. Thanks

Repair is the way to go.

How do you know how much line to put in the fuel tank so the filter can stay in the tank?

mine has same fuel line and mine was in tank just like yours

It was worth fixing, 👍👍.

someone got lazy with this trimmer since the screws are gone. and if this trimmer was mine i would do the same thjng just install two screws run through the carb and done.

For that money i would fix it, but like you i am not a fan of that style of strimmer, great strimmers when working ok, 2 hrs messing about with it, you can see why it was put out on the curb .

For us guys Fix Fix Fix

The 2 hours is due to recording it or without the effort of recording it took 2 hours?

Wow that diaphragm was really bad that time.

I don’t recommend Bolens weed trimmer do you recommend Bolens weed trimmer?

I got the St 275 to run I had to clean the exhaust Port because it was completely clogged with carbon

if that trimmer was yours then would you put 2 screws instead of all of em? if it was mine i wouldnt care to do the entire assembly since if it broke on me i ll be like who wants a free trimmer something like that.

I always think it's better to fix if you can instead of giving these companies money for their ridiculous prices!! Just my thoughts. Besides it's always better to give our tools a second chance if able

Since you got this far guess i would fix it

do you have the carb number for the choke built in the carb i have one like that but i need the number

Where can i buy this carb kit? thx

If you Fix it it will run

this has to be complicated line routing of all times.

👍👍👍👍

What makes the carb leak? Worn needle and seat?

Those mtd 31cc engines are a cancer in my opinion! Never had any luck with them.

Good fix, but it's still a crappy trimmer. Nice job!

If you know you can fix it you just gotta do it what can you say its like a bad habit he he !🤷

I hate bolens they have the worst design for a starter I had to fix the starter three times before I trashed the thing. I can't believe that they still sell it at lowes .maybe they revamped the design but I know the model I had was flawed

Check the spark arrestor on the muffler clean it or take it out replaced all fuel lines should of been as far as you should of went till you played with it more messing with the carb is last thing. You play with also taking out the fuel adjust needle valves and squirting carb cleaner in it and I like the fast how you clean the carb screen but that how far I would of went if it was more buy a new carb here in Arizona we can't get parts for these weed eaters not even carbs

Run it till it's done. Then buy a professional series Stihl or Husqvarna.

You haven't added in your cost of labour so $14.50 is not a true cost of repair if you are going to sell it.

I found one of these

Buy a new trimmer if its a Bolens.

bolens just aint a good brand.