Chainsaw Top End Rebuild - Husqvarna 345
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- เผยแพร่เมื่อ 15 ต.ค. 2024
- Chainsaw Top End Rebuild - Husqvarna 345
In this step by step video I show you how to rebuild the "TOP END" by replacing the cylinder piston and ring on a Husqvarna 345 chainsaw. If your chainsaw has no compression it definitely needs a new top-end rebuild!
Buy this cylinder kit here;
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Easy to follow and thorough step by step tutorials do it yourself (DIY) to help you with your broken lawn and garden equipment including snowblowers.
I do my best to teach you how to easily diagnose problems the fastest, quickest and most efficient way with real repairs beyond just replacing a spark plug. These tips are for both the homeowner and shop owner.
Whether it be a handheld, two stroke, two cycle engine like a chainsaw, weed eater, weed wacker, string trimmer, grass trimmer, line trimmer, hedge trimmer, strimmer, brush cutter, leaf blower, or four stroke, four cycle units like a lawnmower, wood splitter, lawn tractor, snowblower, pressure washer, generator or a ride on mower that needs parts installed or replaced, I’m your go-to guy.
My favorite brands of spark plugs are NGK and Champion and are the ones I recommend.
I’ve been a small engine mechanic for many decades and also run my own repair shop so my videos are loaded with tips and tricks that I have learned and want to share with you. You will also find many tool and product reviews from top brands on my channel as well.
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Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. DONYBOY73 “The Small Engine Doctor” assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. DONYBOY73 “The Small Engine Doctor” recommends safe practices when working with power tools, hand tools, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of DONYBOY73 “The Small Engine Doctor”, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not DONYBOY73 “The Small Engine Doctor".
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"It does stink, though" LOL! Donny keeping it real! Stay safe, my brother!
Thanks for no music, no noise and no extra talking. This is how a learning environment should be.
Amen to that!
I agree. I think the music is a distraction. The tone and inflection ove his voice is great for an instructional video.
Absolutely the gold standard for small engine instructional videos - well done, DB!
I run a modest tree service. Ive seen a lot of these vids. This is not my saw. I run much larger saws. But this is the best rebuild video ive ever seen. Thank you.
Ethan
You hands down have the best tutorials for fixing saws. Your attention to detail in explaining every little thing is exceptional and the clarity of your camera angles is excellent! Thank you for your time and dedication to your videos.
Just 2 questions, and i apologize if you have already answered these, what type of oil do you apply on the piston? And is that redish color stuff you used (i cant recall the name you said) on the base of the cylinder head, like a form of gasket maker?
Thank you, Don! I watched your video and it helped me to replace the piston and cylinder on my Husqvarna 440e x-torq chainsaw. It was a successful tear-down and re-build in large part thanks to your excellent and informative video. Much appreciated!
Thank you so much for your great instructional video.
I live in Tasmania, which is a state of Australia.
My Husqvarna 555 required a cylinder/piston rebuild and the local chainsaw repairers were going to charge me around AU$700 to fix.
I was able to purchase genuine OEM parts from the USA and even with our poor currency conversion and freight, I was able to purchase and repair myself for under AU$200.
Of course, I would not have been confident enough to attempt without watching your video and even though it was not specifically my model, it was enough to instruct me to repair.
Thank you, thank you, thank you.
Make sure you are subscribed and greetings from Canada!
Hello Don,
I have the Husqvarna 345 chainsaw and have been using it for 6 or 7 years. The 345 is a real performer and whether I use it for 2 hours or 8 hours it's never failed to impress me.
I enjoy your videos a great deal. I like the way you explain everything clearly and using your videos as a complete guide have been a great learning tool saving me quite a bit of hard earned money.
Thank you and keep up the great work!
Regards,
Bob
Thank you for your instructions,and not talking,about a certain part to long...You,are a GREAT Teacher..God Bless
This is superb instruction. Thank you.
I've been told that the plastic intake clamp band is prone to fail in 300 series saws, and they'll overheat. I discovered mine is loose so I'm going to replace with metal
Thank you so much for all of your videos on rebuilding chainsaws. I have a Husqvarna 261 from 1999 which has performed well over the years but recently I've noticed it has a lack of power. After a compression test I only got 115 PSI. So I bought a top-end rebuild kit off Amazon for $100. The cylinder and piston are from Taiwan. Watching your video and following your instructions I was able to tear down my saw, clean everything in the parts washer, and reassemble the saw with the new cylinder and piston. It looks and runs like a new saw again!! Now I'm getting just over 150 PSI on the compression test. Without your videos I would never have attempted this on my own. THANKS!!
Thank You Thank You Thank You!! Excellent video! I just rebuilt the top end on my Husqvarna chainsaw following your instructions and using the replacement parts you recommended and i was able to complete the job in a few hours and the chainsaw is working like new again. The shop wanted $350 plus to fix it and I got it done for $80 myself and had the satisfaction and fun of doing it. I couldnt have done it without your help so much appreciated! Cheers donyboy
I recently trying to start my own chainsaw repairs because I love chainsaws. I bought a stihl 021 and I’ve been looking at video repairs for a few tips. I went to a saw shop 26mins away and said it would cost 600 to repair it so I bought the aftermarket parts for it. I already took it apart to see what was wrong and I’m ready to repair it and I thank you the most for these tips thanks.
I have a 340 which belongs to my wife’s uncle. It is really loose in the frame. You can grab the bar and it will move a half inch like something isn’t in place or broken. I wonder if you have ever run in to this before. I love the videos and the time you put into them. Thank you
I really believe this Man could do this in his sleep! Huge thumbs up, and thanks for all your great content. It really helps us dummies, like myself! 😀 Peace! 👍👍👍
After being quoted around $600AU I decided to pay $150 for a new oil casing & muffler & try and do the repairs myself. I spent many hrs watching videos but still didn't feel that confident until I came across your videos. Now I think I can do it, thankyou.
I had the same problem on a similar saw (353); this video made my life SO easy! Thanks!
This video allowed me to do my own repair. Saved me hundreds over a new saw! Thank you!
I like your torx and and allen key bits, i just got the L shaped ones
Thanks so much Don. I just rebuilt my Husqvarna 340 per your video. It's now as good as it was the day I bought it. Your video was just perfect. Keep up the great work!
Great video, Nice, slow , methodical and to the point. Just rebuilt my Husky 345 and it worked. Then I used the same video as a guide to replace the piston and cylinder on a 346 XP and now it works great.
Excellent video; did cylinder & piston on Mac 335 using this guide. Tips: put the gudgeon pin in the freezer and warm the piston (I put it a jar in some hot water) then the pin can be pushed all the way in with your little finger; grease on the rings will keep them in the right place as the piston is pushed into the cylinder (the new cylinder was coned so did not have to squeeze rings).
Thank you for the video. I just did this on a husky 350 I got from my dad. Excellent video. Runs like a top now thanks to you.
Your video helped a novice mechanic replace the cylinder and piston on an old popular p3314 chainsaw. I finally got it to run but seems to be running to hot and smoking quite a bit. I have adjusted both L & H according to your videos. It seems to be running fine and only issue is a very dull chain. Just appears to be to hot. Any advice for a rocky? Your a great teacher in the videos your produce. Thanks for the info you put out.
Hi Dony,
Great job with this video. Rebuilt my 345 in an afternoon watching this video - so far, runs good. Can't tell you how much I appreciated the expert guidance.
Only trouble I had was with getting the piston to fit in the head; you made it look so easy in the video, but that part took me about 10 tries....LOL.
Thanks again :-)!
From an old saw tech- Excellent video!
I have a 345. Best saw I've owned.
thank you sir i did most likely everything you did in this video to my husqvarna 340 and its runs great now.couple problems every now and then but it was my father old saw and he didnt took care of it
I don't even work on small engines a whole lot, but I've long ago forgotten how many times I've seen people buy something *really* expensive, and then run it with no oil.
"I can't be bothered mixing oil into the gas, it's too much trouble! I'm only using it for a weekend, it won't make any difference!"
*engine fails*
"What a piece of crap! They don't make 'em like they used to!!"
These are GREAT video's Don...very detailed...thank you.
Hey Don; It was deja vu this morning as I checked out your weekly video. I am just installing an aftermarket kit on a Husqvarna 359 that I picked up from another supplier. This was my first time using an aftermarket kit as the retail cost on the OEM kit was $389.00. My concern was the very rough chamfer on the edges of the ports. I cleaned them up with some emery cloth and feel better about them now. I was suitably impressed with the clearances and the quality of the nikasil, but I guess time will tell. Thanks for the video as it is clear and concise as usual.
Great video Donny, details are great! Always good for a refresher. Can never have too much knowledge. Always watch commercials to the end, no matter how long they are, helps his AWESOME channel!
You are a great teacher! Forever grateful!
Well Donny boy
I finish my rebuilt on a husqvarna 235e
Found an original Husqvarna piston n cylinder kit on amazon for $14
Cheaper than Chinese parts
Took me 2 hours to do it
It work like a charm now
Thanks
actually the 235 is a poulan . maybe thats why it was 14 bucks
Excellent video, thorough & to the point! Thank you for that! Now I'll try my hand at it on a Husqvarna 42 special..
you are one of my real life heroes. I really mean that. You put a lot of time into this. You are a giver. May God bless you for all that you are. Thank you
Man, what a sensational video. Thanks. Thanks also for not playing stupid music in the background.
Thank you I just fix a chainsaw the somebody throw away I put a stud for the chain new gas lines new bar and chain now runs like brand new I have learn a lot from your videos thank you again
Hi Don, I reside on the east coast of Australia, NSW. Thank you for a top video, I have a Huskie 136 chain saw.
Exellent job! This chocke plastic lever looks brithle maybe I m wrong. Thanks for sharing.
...Great video!...I'll add...whenever I rebuild a 340 or 345, I always upgrade to the 350-type top end...you can get the China aftermarket piston/cylinder kits, often with the 350-type adapter block/bearing holder included, for just about the same money you pay for the 340/345 one-piece kits, especially if you buy the open-port 49cc kits...then you have a stronger bottom end, the customer is happy about the extra power, and the rebuild is easier due to not having to deal with the pain in the b*tt job of getting the piston and rings started into the bottom of that one-piece job... with wet sealant getting everywhere while you are trying to get it started :(...with the 350 style setup, you can assemble the bottom end, then let the sealant cure, then install the cylinder... :)
In your opinion, what is the best saw to maintain
Dony thank you for all your great videos. They have helped me numerous times.
The piston kit with cylinder and carburetor kit for Husqvarna 235 just came in
😁
I’ll need to psych myself up to fix my 235
Very well done video - and I used to write tech manuals and do tech videos for a living - and (I think) this vid could be used as a "how to" for making such videos.
Dony, what a fantastic vid. Your expertise is very evident; great step-by-step repair with lots of detail and excellent photography. Thank you. Keepwell
Thank you great vid, same saw same issue. I'm curious about checking the connecting rod/crankshaft bearing for the same issue. How did you check?
I sent my 345 to get fixed at a small engine repair shop....would not stay running and for the kill switch that did not shut off. After spending $123.00 and leaving my saw there for over a week the first time and another 3 days the second time. I got it back and the switch had butt connectors on it and still doesn't work and they said they rebuilt the carb and it was doing the same thing as before " would not stay running. So now I will fix it myself now that I have time. Thanks for the info and the link.
hey Donny, thanks for another awesome video on how to properly remove a clutch on a chain saw without causing damage to it.!!!
Great step by step instructions, and important advice regarding determining failure cause. Awesome parts washer! Nice how easily you installed the cylinder.
Thank You donyboy! Great video! just rebuilt my 385xp and it runs great! I hope
discountonlineparts know how much business you send them!! YOUR THE MAN!!
+Eric Pollard thanks
Wow, you have no idea how much time and worry you saved me by describing the small plastic piece at the back of the throttle linkage (at 4:40 in the video). That exact thing happened to me!
I was looking at specs and comparing this Husq vs a Stihl 250. Putting a top end on that with the little fiddly bits looks like a real chore and potential swear fest for me. Was hoping it would be easier to rebuild than a MS250 but sure doesn't look like it. Guess I'll stick with what I got. Thanks for the vid!
I have a saw just like that had it for a lot of years great saw. Done a great job on the video my friend. Never seen one rebuild before. You my friend are a master at that great job
Another really well done video with excellent lighting and camera work. Easy to see. Easy to follow. Thorough explanation with helpful troubleshooting tips. Your videos are top notch.
+mybigtokachi thanks!
This is one of the best videos I've seen you put out donyboy. It's a beautiful job and I really appreciate you sharing this. I'm not likely to ever do this myself but it gives me an insight and appreciation of what goes on in your business. Let's say it's been iluminating. You mentioned a fuel mix of 45:1 there, might be a pro model. My Husky uses a fuel mix of 33:1 and it has given me nearly 4 years of service, and now I'm at the end of the second chain. It simply keeps going if you look after it and follow the manual.
+Gregorynts thanks!
Should have used a bearing block from the Husqvarna 350 and a piston and jug ignition coil from a 346xp. It's a bolt together mod and makes a light weight homeowner saw run as well as a 50cc professional saw.
A hose clamp makes a good ring compressor.
Really nice job man .. I would like to mention that if most of the substandard finish work with the new barrel is a problem for you theres alot of improvement to be had in the use of a die grinder and a cartridge roll for finishing .. even the stock barrel had about 1/8 inch of material that could have been port matched on the exhaust side.. there is tons of power to be gained from a bit of smoothing of the ports .. I wont get into changing transfer port height or size as a means to make power .. but you could improve the saws power 25 percent or more from port matching and smoothing .. love your channel nice job
Fantastic close up photography, well done and thanks
Nice job Dony. Top quality production from top to bottom, front to back.
+packofhounds thanks
+donyboy73 agasează
+donyboy73 agasează S
merci
Agree!
Best channel on TH-cam.
That was so simple, Thanks for an awesome video. Very helpful.
Thanks Don, just ready to start the same on a 350. Off I go. Thanks so much for the excellent video.
Hi Don. I’ve watched this video before. Second time was just as good. I like your attention to detail and care you put into your work. Explaining as you go step by step is clear and precise too. Lovin the parts washer hehe. That is a must for your repair shop. Stay safe. Regards from Perth Western Australia 🦘🇦🇺
wow soooo much easier to deal with the piston clip than the stihl one that i just watched, same (similar) top end rebuild but didnt have the bent in section on the clips, just a little groove for your pliers nose lol
So looks like i my be wrong!
I may be wrong about this also, "those two parts do not get installed WITH THAT KIT at all"
But I am very thankful for the very well put together video and you do nice clean work.
Next time you get one of those kits look at what I thinking.
Thanks again!
love your work don you make it look easy step by step
Very helpful video. Thank you!
best howto video on youtube, thx
Great video. Only gripe I have is what allen wrenches are needed for that saw? Also I read somewhere that there is a metal flange to replace that plastic on on the cylinder head for the carb attachment. Seems that the plastic ring gets loose and might suck air thus run lean and burn up the engine before it's supposed too ): TIA
I have an old saw that I found in a shed and it needs a carb clean but the saw itself is filthy so while I have the carb off could I still wash that saw with a parts washer as long as I dry out the cylinder?
I spent a lot of days replacing cylinder heads on snowmobiles. I remember polishing and porting every one of them. It was important so the rings wouldnt catch on the port and destroy everything. I bought a friends snowmobile where he just replaced the head but forgot to chamfer the port and the rings broke. He was nice enough to replace everything. I spent a few hours polishing and porting. I had a book specifically on how to do this. An old timer gave it to me when he had a speed shop. It was invaluable.
If you don't mind me asking, what was the title of the book and who was the author? I'm just starting to repair these systems, and I really want the insight.
@@andrewlara7992 sadly I do not have that book any longer as I believe I sold it. I am still kicking myself. It is no longer available anywhere and I couldn't tell you who even produced it. As we switch over to computers and electronic information, we are losing many of these rare gems. That book made me better in terms I cannot even describe because the knowledge it contained is no longer available.
do you need the little plates that you put sealant over the plates go over the crankshaft bearing seals i have a 340E and mine doesnt have them (saw been taken apart by someone else and they didnt put themback
Hi good video as always,
I have a problem with one chainsaw like this, a husqvarna 345, starts good but in 10 seconds or less starts reving and stops, I can't be able to know what is the problem...spark plug looks good and the carburetor diafragms are new.. maybe an air leaking fuel line can be the problem? I dont know what to do.. sorry for my English, thanks!
Hey dony
Thanks a lot for your very detailed videos they are great ,truly amazing,
I live in Ireland and I like to fix machines specially small engine machines for my friends,
I think you’re videos are brilliant
And you are definitely an inspiration
Thank you for all you’re effort
Nicely done brilliant
Best of luck
I missed these long videos about chainsaws!
Nice job, good video!
+Martin O. thanks, long to edit too!
+donyboy73
I know :)
+donyboy73 snow in late August... hmmmmm lol
+Mark Sweeney it was filmed in march this year
thanks Dony , by misteck I put gas not mix and damage the pisotn and cilinder on my stihl ms 180c and Im going to fix.
Awesome
Now I’m going take apart my Husqvarna 235 that has a score ring
I’m pretty sure I’m going to end up with a chainsaw that I cannot put together
But hey
This video gave me the confidence
🤣🤣🤣🤣
Wish me luck
i did a 235 and it was pretty easy .
Hi! I have a question. When should I replace a chain saw piston (ie. after how many working hours or after spending how many petrol tanks)? Thank you in advance.
Donny, Should I do an initial cleaning and blow off before I take it apart? It seems like there would be less chance of "trash" getting in the engine.
congratulations again because you are still good at repairing chainsaws :)
I have a 345 that I love! Last year after allowing a friend to barrow it , it began to die after 3-5 minutes of usage. When I first start the chainsaw it seems to have plenty of compression , however after it dies the compression is little to none and it will not start again until it cools off . I removed the muffler and checked the piston, there are some scratches on it but not as bad as the one you show in the video. Could it be something else or should I just replace head and piston? Thanks in advance.
Excellent video wish I had watched it a few weeks ago was working on two husky 350's....
Excellent VIDEO. Thank you.
Awesome work ethics plus managing recording and whole lot. Very impressed. Definitely you are a bucket fillers not a bucket dippers personality.
lol
What do you think is easier to rebuild, a pro saw or a farm/ranch saw?
a pro saw is easier
Beautifully done Don 👍🏼
according the "answer army" the correct torque on those cylinder screws is 9.6-11 ftlbs. I think that's the one complaint I have about this video; those torques should be found out and followed. I know "it's just a chainsaw" but for as easy as it is to find the torque, why not do it right? Other than that, 10 out 10 for a helpful howto on this job. I'm feeling a LOT better about doing it myself now. Thanks!
Super boulot bien expliqué merci j ai la même réparation a effectuer bonne continuation
Love your videos..
I’ve been trying to rebuild a Husqvarna 125L string trimmer motor, and have run into a problem and need you expertise please.
I am not able to locate needle bearings for the piston connecting rod? This is a first in 30 years of motors to see they want to sell the “crank” assembly as the part? Like the needle bearings are pressed on? Can you shed some light on this for me? Trimmer was made in 2008 and the piston and head are scored like this one you’re working on,
Hi, I'm in the process of replacing my cylinder on my 440e. How do you remove the large spring that protrudes out of the side, is there a special tool that inserts into hole?
Another good video, thank you. I have a 97 Husqvarna 41, it still has good compression, but its good to know when it does start to loose compression, for around $50 I can rebuild it. When you install a new 2 cycle cylinder, do you have to hone it like a 4 cycle?
should be already to go . if you are just replacing the piston and ring , then maybe a hone is good for ring break-in .
Great video! After replacing the piston do I have to do anything to break it in properly?
I have a Husqvarna 345 which leaks chain oil excessively is this normal or can I do something about it. It leaks until it's empty, and do you have a video out showing this fix? Thanks mate.
My 345 leaks oil also sitting on the bench when not running.
Wich tools do you like to use and wich ones you use the most doing small engine rapairs?
+Nick R 1/4" sockets, good pliers and screwdrivers
You do great work Don, I hate working on my chainsaws.
+ug mold thanks
Don it looks like those FT cylinders could use a bit of touching up with a porting tool. Not sure where they come from but prob starts with C. Haha. But could be hard to get at the transfer ports which looked like the roughest surface. What do you think? Bob
yes i think you're right bob!
Prob. not worth the risk of nicking cylinder wall doing transfer ports but working on exhaust and intake should help. Those saws seem to run good at first but have to hope the nickasil coating lasts for awhile. Prob ok for light duty use and maybe use a bit more oil.
Спасибо друг ты мне очень помог видосом. 👍👍👍👍👍👍
I really envoy your diy vids. I find them very helpful.
+Sean Carver thanks
Thank you for this detailed video, and followed step by step and it worked out great -I'm off to the woodpile.
Thanks for your videos. Its so useful.