Chainsaw Top End Rebuild - Husqvarna 345
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- Опубликовано: 30 сен 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.
I have the largest Small Engine Repair Video Library on RUclips and the entire internet with over 1200 videos, just GOOGLE "DONYBOY73"!
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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".
#donyboy73 #db73 #smallenginerepair #howto #withme 
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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.
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!!"
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!
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?
Absolutely the gold standard for small engine instructional videos - well done, DB!
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.
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 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!
This is great but You should wear gloves buddy. All those different chemicals are not good for your skin. My dad has horribly cracked hands from the harsh chemicals they use in the steel mills.
This video allowed me to do my own repair. Saved me hundreds over a new saw! Thank you!
...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... :)
Holy fucking complicated little piece of machinery!!
The old Stihls are my favorite. Simple, easy to work on. Reliable.
I had the same problem on a similar saw (353); this video made my life SO easy! Thanks!
From an old saw tech- Excellent video!
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 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
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!
I like your torx and and allen key bits, i just got the L shaped ones
Great step by step instructions, and important advice regarding determining failure cause. Awesome parts washer! Nice how easily you installed the cylinder.
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
Hello Donyboy73, forgive me if I am mistaken, but at 20:25 of the video, after slipping the throttle linkage into the carb arm, you should have slipped the retainer spring end under the tab to prevent the linkage from coming out of place. Anyway, good job on the rebuild.
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 :-)!
love your work don you make it look easy step by step
In your opinion, what is the best saw to maintain
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 .
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!
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! 👍👍👍
Nice job Dony. Top quality production from top to bottom, front to back.
+packofhounds thanks
+donyboy73 agasează
+donyboy73 agasează S
merci
Agree!
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
These are GREAT video's Don...very detailed...thank you.
at 0:25 you talked about an "air leak" as a potential cause for needing to rebuild top engine of the chainsaw. Recently burned out my Husqvarna 550 chainsaw. I am sure I only put 50:1 mix gas on the saw, so I am unsure why the saw may have been over heated
dull chain could cause overheat. Loose spark plug can cause air leak. Lotsa use and carbon build up in exhaust CAN get into cylinder. Also use high quality gas oil mix, dont buy cheap stuff. If your saw sits and gas gets old that can damage too.
Hi dony. My 550xp has blown up no compression what so ever! Is it pretty much the same process? Many thanks James
yes same principle but different
Fantastic close up photography, well done and thanks
this the most extensive video i ever seen REALLY and no commercials that's why i am deleting a lot of my subs on you tube going back to basics macintosh comp you get drift
I just purchased the exact same saw Husky 345 in mint condition (low hrs ) but do not have a decompression port valve. is it possible the cylinder has been changed or did Husqvarna have some 345 with and without the valve. Theres no port in the cylinder for it at all. Thx ps: I had a Jonsered 345 I believe long ago and it had the valve. These saws were over achievers!
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.
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.
You look like a younger man here
Just kidding, I’ve watched you trying to catch up to me but I’m way way ahead.. lolol
Really enjoyed watching your videos all these years
Thank You and Wife, because it takes time away from her …
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
When I rebuilt my chainsaw and tried to start it and it would idle great but would bog out when pulling the trigger. I tried to adjust it but it didn't work. Any ideas. It did sit for a year with fuel because the first motor blew up.
LOTS of WORK!!!!! why don't they have it with 4 long studs or rods with 4 nuts on top,like any scooter has,so that you don't have to dismantle the whole shibang?
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
wow, wow, wow - ignition coil in part washer 9:05
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
if you do not realize saws are mix fuel engines ,YOU PROB SHOULD NOT BE EVEN HOLDING A SAW!!
I did a rebuild on a moped engine. first time I tried to get a new ring on the new piston I snapped the ring. that was a $30.00 mistake
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.
Personally I think running cheap oil 100-1 and let it just idle for one tank of fuel it beds the ring in properly
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
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
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?
Thank goodness for aftermarket parts, which saves money. Otherwise you would have to scrap the saw, and use for other parts.
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!
Darn! After watching this, I want to buy a workbench and fix my Husq Rancher!
Well done Donny- your supplier should be looking in the boxes before shipping parts out to make sure they don't look like that.
Thank you for this detailed video, and followed step by step and it worked out great -I'm off to the woodpile.
You did not install the return spring for the carb governor correctly.
Excellent VIDEO. Thank you.
What is New cylinder?, transfers is different vs original
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!
How much Horsepower???? (Just wondering)
I have a 345. Best saw I've owned.
Sad that people have so much money they blow up there saw
Hello Dony, i'm just wondering how much cost in Canada one Husqvarna 445 II. Thank you and keep coing like this nice videos.
+Stefan Petrovic around $500
very detailed...i'm glad i discovered your channel...
Note. The intake plastic clamp that holds the air boot on, can come loose over time and cause an air leak, according to internet research from others. They sell a new replacement stainless steel spring clamp for the air boot. The only question is, how the hell does that air intake system work? The air boot has 4 pieces that overlap each other, and it's super weird.
Good for you Joel!!!
more idle fuel its brokin fast it has no acceleration feul
how rebuilt husqvana 340
This is a great video. Great detail and a lot of necessary information. Thanks Donyboy73. Always like to visit your page!
+sblg43 thanks
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!
Best channel on RUclips.
Good day, I need help, I wanted to replace piston on Echo bp 6000 backblower ,but I don't know what size and how to get the piston. Please Can you help me? From Germany
backblower
Excellent video
Wray in Ohio
best howto video on youtube, thx
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.
You did a motor upgrade on a stillon here that I watched, Where did you get the parts for the still, I need a head and piston for an o44 Stihl
i got the kit from discountonlineparts.com
No oil in the gas. They should have their chainsaw license revoked, permanently.
Hi dony I saw number 42 on the cylinder what does this number mean is it the size of a piston
I'm not sure
Thank very much great video
Can't you just let it run to break in ?
Surprised you did not replace the bearings since you were only flywheel removal from that task. The small piece of metal sitting on the top of the bearing seal has to seat in the cylinder base groove.. I am not sure how to verify that they seated properly in the cylinder base groove. Also the plastic clip on the carburetor apparently is prone to air leak and an upgrade " partition wall" part with a metal clip as opposed to plastic ( #537 25 13-02) is available from Husqvarna to cure that ill. wolf
+Crocellian this was strictly educational
I think the comments of Crocellian may be a bit "over the top" BUT I do think that this saw requires special attention when you put it back together. wolf
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.
Super vid Donny me boy! A pro makes it look easy, and no cuss words at that... at least on the vid, ha ha. With parts and labor, almost the cost of a new saw, aye? I just junked a fairly new Ryobi four stroke 35cc wacker, no oil, seized. Where did the oil go??? On a four stroke, CHECK THE OIL OFTEN! Most cheapo two strokes only last a few years. Don
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?
Donnyboy, Thanks for another great video; I always give you a thumbs up, even this time,,, even though you're working on a Husqvarna. (LOL)
Thank you for your instructions,and not talking,about a certain part to long...You,are a GREAT Teacher..God Bless
Hi Don, I reside on the east coast of Australia, NSW. Thank you for a top video, I have a Huskie 136 chain saw.
Thanks for your videos. Its so useful.
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.
I'm not really all that confident in aftermarket piston/cylinder kits unless they are manufactured by Meteor. If the customer is not willing to pay the money for Meteor products, I will install a good, used oem cylinder/ piston kit long before a cheaply made kit from China. Nicely done video though, as always.
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
I did a top end on the husky 55. I installed the piston with the arrow pointed towards the exhaust. However the pin for the ring on this particular piston was also on that side. So the pin for the ring is visible through the exhaust port. What is your thoughts on this. It was a cheap kit for about 60 bucks Canadian. Big fan here from mclean Sask.
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!
dony, I have a 346xp I just put a new cylinder and piston on it(used echo red armor oil to coat the piston,rings,cylinder) and for the life of me can't get it to start even with fuel and spark. would you have any ideas on what it could be? I checked and didn't see any scoring on the new cylinder and no air leaks on the crank seals.
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.
That’s a brand new chain??? I own a 345 husky, i’ll drop that chain through wood like melted butter. anyways, great video. I was sort of hoping you was going to put the compression tester on it, Curious how much more compression it makes
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,