Husqvarna 45 Chainsaw Compression Test




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Ken M (jp8jeta): 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 informative channel.

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 ;-)

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 time.

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

George Rivera: pathfinder5181@yahoo.com

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.

donyboy73: that's awesome

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

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

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.

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

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...

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

fun1980: mine is 170 psi.

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

donyboy73: @8019shane that's low

Preston Blair: 15 psi

donyboy73: @tiremanb thanks man

tiremanb: great video keep up the good work .
Rating:
Husqvarna 45 Chainsaw Compression Test 5 out of 5

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Husqvarna 45 Chainsaw Compression Test