Ken M: Don, I have the same saw, dated 1997 and the compression is 175 psi, seams
pretty high considering there is some lite scoring on the piston and
cylinder, your thoughts ? could you tell me the reason for holding the
throttle open during the compression test ? thank you for the very
Clifford Johnston: I bought a used and abused Husqvarna 455 Rancher for $50. Much to my
surprise, the compression test indicated 150 psi. It purrs like a wildcat
wcfltr: Mine has 60lbs and won't run; time for a rebuild or a new one.
dolson99: Hello I have a McCulloch Weedeater that I have not ran for a number of
years. What will I have to do to get it going again? Thank- you for your
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
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
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
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 .
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
George Rivera: firstname.lastname@example.org
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
Tim R: WOW, i have some 12hp briggs engines that don't have that much!
fun1980: mine is 170 psi.
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...
Husqvarna 45 Chainsaw Compression Test4.9
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