Husqvarna 45 Chainsaw Compression Test




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seasonedtoker: now that's a good and healthy baby!! :)

CoRRisioN: i'll have to do my mac 610 pro and my echo pb 4600 my echo srm 2400 and a few others

jwades77: my BRAND NEW Jonsered 2255 has 120psi compression. My 6yr old Makita/Dolmar DCS540 has a whopping great 155psi. I dont get it.

donyboy73: that's awesome

fulldraw360: my 038 mag got 225psi

Liamautomechanic: how much for the compression tester??looks a good one,

Tim R: @pberglin I wouldn't think so, i've ran my weedeater without a exhaust at all and it ran great and seemed to run cooler, you will have to adjust the carb after though. Look up videos on here for doing that, i know theres a few.

Liamautomechanic: that saw is in good nick, good vid

donyboy73: @seasonedtoker that saw is like new, original bar and chain

donyboy73: it's probably burned out, need a new top end kit, piston, cylinder and rings

donyboy73: yes sometimes better to spend more money right away for an oem kit

seasonedtoker: @donyboy73 pardon my subquestion, I am decarbonizing my trimmer over the winter, it has a similar engine, mine's 40cc, but it's a husky anyway. so 120-150 psi is what I am looking for, right? any tips on how to clean carbon deposits the easy way? I have used wire brushes but the cylinder on this thing is a bit deeper than my dremel is. is there anything I can soak it in and it will lift off deposits for sure? thanks a lot.

donyboy73: @7minibike2 let me know what the compression is

donyboy73: @Liamautomechanic it's a cheaper one , only $60

KJP`s corner: On my Husqvarna 136 (36 cm3) year 2000, readings were: 100 psi on dry, and 180 psi with oil. I did a test video of it as well

mike548: Hey donboy73, can i make a request for the snow blower guys and see a compression test on a Tecumseh engine. Thanks again, awesome videos.

shinyfuzzy: @7minibike2 might be lean mixture

AzFiresDan: just by reading other ppl test readings... its time for a true top end!!!

tiremanb: great video keep up the good work .

ncrdisabled Submarine vet: How would you check the compression on a engine with a built in decompression valve but no way to turn it off. I checked the compression and it says 20 psi but the saw starts right up . I think the decompression valve is affection the reading. Thanks

George Rivera: One of the guys topped up fuel using plain gasoline on a new 45 model and it lost compression. What happened? It has 60 PSI.

kodibass: I just did a cold compression check on my husky 41, very much like the 45, I got about 130psi it runs but is a bit hard to start cold, once warmed up starts fine. thanks for the great vids Dony!

7minibike2: i ajusted the high low a few times ill get a comp tester a give that a shot seems to have a ton of compression.after it was ajusted it runs ,idles and revs great but when it hits the log it boggs .

XLHomelite: @mike548 Agree, these vids have made me a better am mechanic, have sent a small donate to donny, hope he keeps this up. IMHO too many crooks in the small engine repair biz. BTW, this husky saw is very prone to overheat and you have to remember its a consumer saw that needs higher oil mix and only very lite use. Yes, i have a brand new 45 i blew up on ironwood on hot day.

4inches4u: mine is 180 on my poulan 361.....that thing is louder than my 30-06

7minibike2: good vid one ? i wrote awile back about a husky 35 and checked the intake boot.the saw runs great i ajusted the carb the problem is when i startb to cut it boggs down with little power take it off the log runs and revs great.any ideas?p.s the saw is new only used a few times.

donyboy73: @pberglin i don't have much experience with moded saws but a friend of mine does

George Rivera: pathfinder5181@yahoo.com

gpzDave: What a nice saw.

AzFiresDan: hey there minibike, I have a husky 575xp 51 piston 72cc. 30" bar with a skip chain. everytime that I start cutting big trees and i use the dawgs the power head start bugging down... So I start with a carb re-built and a new top end. try those, and see how it works.

1972FordF150: That's a good reading !

7minibike2: im going to try the carb the saw is brand new i got it as a left over so maybe the gaskets dryed out.thanks for the info.mike

Preston Blair: 15 psi

donyboy73: @tiremanb thanks man

donyboy73: @mike548 it's a bit tricky on those 4 cycles because some have a built in decompressor

Tim R: WOW, i have some 12hp briggs engines that don't have that much!

fun1980: mine is 170 psi.

pberglin: Dony- Have you done any work with ported chainsaws / exhausts? Does this shorten the life of the saw or cause the rings to wear out faster? Thanks

bobby8926: @7minibike2 to lean?

donyboy73: @8019shane that's low

AzFiresDan: Hello DonyBoy, Just by watching your videos I have learn lots about chainsaws and to work on them. I did a compression test on Husqvarna 575xp Chain saw. One with the decompressor bottom in and a zip line on the trouttle it read about 60psi second was decompressor bottom out and the same with the trouttle. it read 80psi. I buy a chinesse cylinder head kit, well the price was really nice 99.00, but it missing the vacum line port nipple. Some times be chipper it more end up more expensive...
Rating:
Husqvarna 45 Chainsaw Compression Test 4.9 out of 5

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Husqvarna 45 Chainsaw Compression Test