I have a Husqvarna 350BT backpack blower right here the last guy that
ran this ran it with straight unmixed fuel completely smoked the piston and cylinder on it
well guess what I have another piston and cylinder kit right here it's aftermarket yes we're talking
about Chinese knockoffs here people we're going to put this aftermarket piston and cylinder on this
backpack blower we're going to run it for a while and then we are going to take the cylinder back
off again so we can see what happened in there this is going to be very interesting stay tuned
hey everybody welcome back to Steve's Small Engine Saloon thanks for coming back my website's right
there at the bottom of the screen as usual if you want to have a look at that one day check it out
look at this this is what came in that box we got a piston we have a cylinder we have the
rings for the piston we have the c-clips we have the four gaskets the piston pin
all that stuff everything we need we're going to use every part of this
on this repair right here so I started taking it apart as you can see I got the cover off I
got the carburetor off I have the muffler off I have to show you what I'm looking at through
up through the exhaust port right now look at this as I pull that up and down can you see
that that piston is absolutely destroyed this is awesome I love to see that to be honest with you
the guy who actually owned this and ran straight gas through it yeah he's not gonna like to see that
but uh here we go give me a couple more minutes I'm gonna pull the cylinder off and we're
gonna get the piston and cylinder the new piston and cylinder back on and we're gonna go from there
okay so I just got the new piston and cylinder on here but I have to show you this right
through the exhaust port again because you saw what the last one looked like check this out
look at that what a difference that is that's what it should look like
you know see those little streaky things up and down that's just the assembly oil that I used to
install this thing it's because I haven't ran it yet there's no scoring or anything on there I know
it kind of looks weird to you but that's what that should look like I do have to tell you this too
this thing has been sitting for four years with the old stinky gas in it and carburetor yeah I
pulled it apart and the diaphragms and the gaskets and everything in here were all hard and crispy
just as to be expected so what I did is I rebuilt this carburetor with the because it's a Walbro
carburetor so I put the Walbro spiral diaphragm in this and the the new Walbro purge bulb on here too
if you want to see some links those two videos right there spiral diaphragm and that purge
bulb and also the new piston and cylinder kit that I have right here those links are right underneath
this video in the description and in the pinned comment section if you care to go have a look
now we're going to button this all back up again and we're going to go break this thing in give me
a couple more seconds let's do it done moment of truth coming up here everything's back together
I got some fuel in there and uh what I like to do in a situation like this is I call it a
break-in period I like to just run it idle it rev it up once in a while just let those piston rings
gently and nicely seat themselves into that cylinder so that's what we're going to do let's
go outside hopefully this starts and we're just going to let it run for a little bit
then we'll take it from there purge bulb purge bulb choke on off switch is on
we're gonna let it do that for a long time maybe a tank full of gas there's about a half tank full of
gas in there right now I want to let it go I want to let those piston rings seed in and everything
we just broke this thing in for exactly two hours we just let it idle like that
and we just I went outside and I just revved it up a couple times nothing wide open throttle
but now we have to use it wide open throttle we actually have to go use this thing now April
how do you feel about blowing the driveway right now
oh thank you honey oh April just told me
Steve you're number one thank you I love you too honey bunny
we have a 400 foot long driveway April just blew everything it took her exactly an hour to do that
so we got two hours of run break in time we got another hour wide open throttle actually using
that thing here comes the moment of truth we're gonna pull the cylinder back off of this and
have a look okay I got everything off here it comes here it comes got all the bolts loosened
I gotta admit I got butterflies in my stomach a little bit I'm serious let's have a look
holy smokes
well that cylinder there's the exhaust side that cylinder is absolutely flawless there's not even
a wear mark on that cylinder unreal and look at that look at the exhaust side of this piston
right here I have to say I would have bet money honestly that there would be some wear marks
not not scoring or anything like that but just some wear marks on the exhaust side of this piston
and there is nothing there that is clean is when I put that on that is unreal wow
I am actually quite shocked by this to be honest with you I got a little bit more
respect for aftermarket stuff now I know that the original engine manufacturers the OEM guys
out there are not gonna like to hear me say that but that is actually pretty impressive
what can I say that works absolutely fantastic we're going to put this all back together April
and I are going to use this now as our backpack blower for our driveway put your comments down
right underneath this video and tell me what you guys think I think this is pretty awesome
subscribe to my channel give me that thumbs up button if you like this I think that was a pretty
interesting test and share this with your friends you want to watch something else right now watch
that video right there click on that box right there next and also I can say now is Steve out