so welcome back to our youtube channel haze machinery thank you so much for joining us
today so in front of me i've got a husqvarna 592 xp chainsaw you've probably seen some of
the previous videos that we've done we've bashed a mash out in the woods we've given it a really
good blast to see what this saw's all about but today i'm in our workshop and we're going to talk
about the nitty-gritty of it what's internally going on inside the saw what things might have
changed since some of the things they've already produced we'll strip it apart as much as possible
this is our demo saw but thank you ever so much for joining us once again and let's dig in so this
592xp chainsaw as it says on the tin is around 92cc 92.7 cc to be exact you've got a weight of
7.4 kilos that's excluding the cuttering equipment the bar sizes are standard anywhere from 24 up
to 36 inches with this model and as you can see this one's fitted with the x tough light bar some
of the standard specifications with the saw the engine is producing 5.6 kilowatts of raw power the
maximum power speed is 9600 rpm and your idling speed is around 2800 rpm max torque 5.87 newton
meters and your clutch engagement when you're feathering the throttle picks up at 4 300 rpm
you've got fuel consumption 462 grams per kilowatt hours you've got an adjustable oil type system
which can be adjusted at the bottom of the chainsaw and a sound power level is measured
at 118 decibels so this saw absolutely screams it features a new auto tune 3.0 this chainsaw starts
easily and runs optimally in all conditions it's constantly adjusting itself to the fuel
air altitude and any other factors this saw might come across the powerful x torque engine combined
with the new x-cut c85 chain which is a large 3-8 delivers best-in-class cutting capacity and power
to weight ratio on the market it's either equipped with the x-touch or x-touch light
bars which are available from inch to 36 inch in the uk market ideally designed for professional
forestry users and tree care workers who demand the best in heavy duty performance reliability
and operation with well-balanced maneuverability so having the auto 3.0 added to the machine the
engine settings are always optimized for maximum start ability and performance in all conditions
keeping you going no matter the challenges no need for manual carburation adjustment so there
we go gone through some of the key specs of the chainsaw which you might already know but we'll
start stripping it apart and have a look at some of the internal stuff that's going on
so first of all we'll take off the guide bar and chain get that bit out of the way
oh bit dirty
that's our guide bar and chain so this one's fitted with the x tough light
guide bar so this is a japanese-made guide bar which you probably all all know about
but basically this is laminated the centers cut out just makes it a lot lighter and easier to
maneuver especially if you're going to go for a 36-inch guide bar that's running the x-cup c85
chain which is basically a a 1.5 mil 3 8 chains a large 3 8 so the first thing you can see straight
away clutch cover is that sort of alloy type material you've got a chain adjustment which is
side chain adjustment there just on an on a screw so it's really really easy to adjust your chain
the other big thing as i mentioned in another video is the double dogs so these are standard on
the 592 chainsaw so if you've got some real rough wood that you want to dig into this will just
give you a bit bit better purchase so um that's standard on that and that and they're removable
on the outside one anyway so you can remove that if you wish a bit dirty because obviously like i
said this is our demo saw right the other thing as you can see you've got an external rim sprocket so
if your clutch starts wearing with most domestic saws basically you've got a sprocket which is
built into clutch you've got a that's quite an expensive thing to replace you've got to replace
all the clutch assembly whereas with these high performance saws you have a rim sprocket the rim
sprocket is removable which means all you've got is a little tiny small piece to remove and change
when your chain digs into your sprocket so you've got a little tiny circlip we'll take that one off
a little catchment washer right so this is the removable rim sprocket currently this is a
3 8 spec by 7 tooth sprocket which is replaceable i should imagine within time there'll be other
sprockets you can put on to it to change guy bars chains what have you but at the moment you're
running a 3 8 chain so it's a 3 8 by 7. there we go just take the clutch off really nice heavy duty
thick wall clutch so you're going to get plenty of life in that the other noticeable thing is where
your worm gear drives the oil pump you've got some really deep cuttings there normally a lot of other
makes and brands all you've got is a little tiny notch and it's just driving a little tiny wire but
this one here looks like it's a really heavy duty oil pump we'll spin the clutch off in a
minute have a look but yeah that's some decent decent cuttings there so impressed with that
and that's your clutch bearing so again that's greasable you can easily whip the clutch off
put some grease on that clutch bearing stop that wearing out that's a nice thick bit of
kit as well so there we go so first things you can see decent airflow from that air filter
there's a couple of different types so if you want to upgrade the filtration system on it you can get
different types of air filters this is just a standard felt one it comes with undo that one
as you can see loads of air will get in through there got decent air flow entry all husqvarn
x torque chainsaws come with the twin ports on the carburetor what that does it allows twice
as much air into the saw gives you more raw power and yeah so that's that's what that is
we'll quickly take the plug out got a good ngk spark plug in there i should imagine it's a cmr68
yeah cmr6h spot plug so take that one out just spin it around so you can see the rest of it and
you've got a decompression valve just there as well obviously this is such a big powerful saw
that for you to start it on full compression when it's cold you're gonna need a bit of assistance so
just push that one in that allows it to be easily pulled over until it initially fires when it fires
the pin will pop back out again and then it's ready to use and then you'll get your full power
then so that's your decompression lever just there right let's take off the recoil assembly quickly
so t27 torx bits you've got four screws we'll take that out quickly obviously with anything new
they're always upgrading little bits and pieces so the componentry is always that much better
so that's nice and neat got plenty of airflow coming into the carburetor there so your cooling
fins of your flywheel this is what reacts with the coil which creates your spark these are spinning
round that's pushing air up into the carburetor that's giving you more raw power as well
so that's a decent decent setup there the other thing i've got to mention is i really like how
husqvarna it's just a little tiny simple things like here to get the av mount spring out it's
really simple you've got a screw just in there and a screw on the front and that will just pull
out and they've even got little tiny should we say catchment wires and what that is is obviously when
the machine's being used if it's moving about and you're putting a lot of force onto it that wire
is just stopping that spring being over exerted so that's a really nice feature right what we're
going to do we're going to block up that spark plug and we're going to knock the clutch off right
so i've got my piston stopping the engine we're just going to smack the clutch off so there's
really handy markers on here if you just turn the clutch until it's up on its piston stop and then
there's three little notches on the clutch if you use a plug spanner chisel or anything like that
and a hammer that should just spin off there we go so spin the clutch off nice and simple
and that'll come off like that so that's what you call your clutch shoes and your clutch springs
right so this is a bit i'm really interested in is this oil pump look at that hustle's on about
really decent drive gear on there which uh when incorporated on the clutch you know you're not
gonna break off in a hurry so that's a decent bit of kit and now basically that works off the speed
of the engine again when you rev up your engine it's automatic feed when the chain's spinning
so it's not going to dribble oil out when it's idling so it's only designed to engage when when
you rev the the engine up really hefty oil pump in there we'll dig that on out have a quick look
at that as well have a look at the bearings in the crank and how all that's supported but it's
a real decent sized crankshaft on there that's probably half the size again of a lot of other
pro machines on the market so that's really impressive so they thought about that put some
engineering into that so let's quickly whip off that oil pump and see what's going on below that
there's a bit of a clean off so everyone can see what's going on
that's a pretty beefy oil pump and that and that bit there that adjusts your oil flow rate so if
you want more or less oil that can be adjusted on that point there so if you're running a
slightly shorter guide bar you don't need quite so much oil if you're running a bigger guide bar
obviously you need more oil to get to the end of the guide bar and keep the lubrication up
so you've got an adjustable oil pump in there as well and as you can see in there sorry it's all a
little bit dirty but your oil pump draws oil from this point here and pushes it out your oil gallery
which then goes up to your guide bar and then that will basically run out your oil hole on your rail
and that's what keeps it oiled so it's really simple system decent looking bearings in there
they're all captive with inside so it stops the bearings or anything pulling out and obviously
seals are built in as well and that oil adjuster just worth mentioning that can be adjusted any
point really easily just from underneath the chainsaw so we'll take that bit off there we go
right next bit we'll have a look at the front of the engine it's a really nice exhaust system these
are fitted with spark arrestors we'll take that off in a moment we'll have a look at the exit hole
from the cylinder or the exhaust port and we'll have a look at the piston and have a look in the
internals as well without stripping the cylinder off just give you a good idea of what's going on
in there i don't know if it's got one piston ring two piston rings three whatever but like chamomile
has probably got two but we'll um we'll take the exhaust off and have a look at that as well
that's pretty cool there's three mounting holes on this this exhaust straight into the cylinder
there we go i was actually surprised how long those bolts were on that exhaust it took me a
while to take that off you know that's obviously sat well in the uh cylinder so you're not going to
have any issues of those bolts snapping off in a hurry there's your spark arrestor i was on about
there's certain countries in the world that this is a legal requirement to keep fitted normally
very arid countries which struggle with some sort of grass fires and that sort of stuff so what
that does it just stops any sparks coming out the exhaust these can be cleaned out as well generally
you don't normally get these blocked up with chainsaws because they're used at full throttle
all the time but you do find with some two-stroke machinery that they do get carboned up especially
domestic users they use their machinery on half throttle and it's not burning the fuel effectively
these will get blocked up and cause an issue basically with um with power loss so these
are removable and can be cleaned out just with a wire brush but as you can see you've got a decent
output into the exhaust you're not going to have any restrictions there that's really decent that
and coming into the front of the engine as well as you can see your exhaust port is huge and if
will does a bit of a close-up in there as you can see i'm just going to spin it round you've got
two piston rings so that's going to keep the oil flowing within the engine or the fuel oil
mix and keep that engine well lubricated and keep it nice and cool right so this really is
the business end this is your carburetor modules ecu this is what keeps the engine running keeps
the fuel and air quantities adjusted as you can see a little bit of wiring going on there you've
got a service port which we're going to plug into computer in a moment we've probably run this for
what four or five hours now james bedded it in over a weekend obviously we're in the woods as
well we've done some cutting here back on site so it's had a had a bit of a bedding period really
simple operation on this one your on off switch is just here fuel primer prime the fuel system
this makes for easy starting the other thing you'll notice is husqvarna on a lot of their
pro chainsaws this bit here use a throttle cable so it just makes the easier throttle
a lot smoother acceleration so it's not like that you know or you've got uptake it is very very
smooth but if you want to go full ball squeeze it and you'll have acceleration straight away
absolutely fantastic system that with the cable and then basically as i mentioned to you before
you got twin ports on the carburetor so that's your x torque combined with your intake from
your flywheel that's giving you raw real raw power from this saw so if you've got real hard
forestry applications where you need lots and lots of power then the husqvarna 592 xp chainsaw is for
you right i thought this would interest a few of you literally just got to a point where we're
putting the exhaust back on and i just mentioned to will normally it takes you quite a few attempts
to line up the bolts into the holes and get them all sort of working in and screwing in
but this design what they've done as i mentioned the bolts are quite long and i wondered how far
they went back basically your four cylinder head bolts have got four screw holes on top of the
cylinder to get them off the case if will does a bit of a zoom in what you'll see as i've screwed
the bolts in they actually go through the hole of the cylinder or cylinder head bolts and if i just
turn it around further more and if will just goes and looks in there you'll see you put it through
the front cylinder so you can line up your bolts they're captive then and then all you do is you
just carry on screwing in the bolts basically screwing it more further back in the cylinder
it just makes the exhaust removal so much easier and putting it back on again obviously most of
you wouldn't ever take exhaust off anyway but you might want to do a bit of a clean out or something
like that but i thought that was um a pretty good design actually on there on their behalf but there
we go then we're going to go to our main workshop where we've got our service laptop plugged in
so i'll be two minutes and we'll be at the top right so there's some connectors and wires here
fundamentally this wire that is connected into the block here is for our the service department
so that is just connected in and pushed into place when we connect it up to the laptop we
just pull it out connect it up to the diagnostic software that will then connect up to the laptop
communicate with that we go through all the service data running times as you see it's
searching for the product now we can update the customer's data so if it ever went to another
shop they would know where the machine has come from and what what it's done as well so we'll
just unplug that one again like so plug that back into place the other plug i've just pulled out of
its little holder to gain access will just go back into place now that is actually a connector for
your fleet services and the fleet services module which you can buy for all husqvarna professional
products just goes in here and then there'll be a wire that comes out you plug that straight into
the connector and then basically what that will do that will allow you to read all the service
data keep track of your fleet employees what they're doing run times on the product etc so
that's a handy little feature there that means it doesn't need to be plugged on or screwed into a
top casing of the product either just keeps it out of the way right so just show you another feature
of some of the xp products my handy little um fuel pipe grabber for a better term that little
bulge there that's actually got a magnet sorry should i say in there and what that does is if
there's any metal filings that can get sucked through your should say very fine fuel filter
from say a fuel tank or fuel can or anything like that then this will basically stop any
debris going into the carburetor and they are fitted on well pretty much all the auto tuned
products now from husqvarna so that's a really handy feature so here we are thanks ever so much
for joining us today guys it's been a pleasure i've certainly learned a few new bits and pieces
about this 592 just by stripping it apart they're now available to buy on our website
hazemachinery.co.uk if you like this video please consider subscribing to our youtube channel it
will really help us out so i'm going to say bye but if you haven't seen any of the 592xp chainsaw
videos we've done previously playing around in the woods here's a few clip from us cheers