pvduke
Husqvarna
Pro Class
Pork-inator is due for some much needed service (again). im am not bragging seriously im not that great, but, i am suprized at the amount of abuse this engine can take. i miss shifts, panic revs, subject it to ungodly floggings and loads up hills over and over and... plonking along at minus 2 RPM running over my tongue and feet almost falling off from exhaustion...you get the pic. it's neat piece. i like it!
regardless. every so often i like to pull the pipe and boot and have a look see on my smokers.
first- wash yer bike. i never wash mine (unless its muddy- then it gets blasted ASAP). its a dirt bike, it's posed to be dirty! i just wipe it off and service it. but for this? wash it, detail it. then, yank the sub frame intact. lay it on its side. then carefully remove the filter and look for trash. mines pullin some in from somewhere, prolly the clogged air filter that was in it (not cleaning im tossing it, it's had two cleanings so its now worn out)- so i'm splitting the boot (goes in the dishwasher no heat dry) and gluing it together now that it's warm here. (i know lazy bones shoulda done that first day...). a little teensy bit of super fine dust say as fine baby powder or the like on things aint no big. look for dirt, rocks, bushes. et. al..
next- keep cleaning! get everything off the frame shock and whatnot that might get knocked off and land into said boot during replacement of subframe! plug the fuel line, remove the spark plug and tape over that hole too. now that's stuff nice and clean, inspect everything with a fine tooth comb. remove the paper towel from the carb, hold it open and check it's tonsils, see the reed block? make sure there's no chipping, burrs, etc. if something dont look right? it aint! these DO hour out. replace them regularly. softer ones = more bottom, stiffer ones less bottom better top end perf.
next make triple sure the frame is clean and so is the head pipe. remove same and inspect for coke, and, stuff you missed falling off and landing in there. like the exhaust spring that just fell in there!!!
grab a light and slowly move the piston with the kicker. look for blowby, scoring, cracks, coke etc...check the PV's for coke. if they aer coked stop- clean them, NOW...not later, NOW. move the piston to BDC, when it's down look at the intake side of things. you can also see the head in some cases. with the plug out you can sometimes see the piston top. if its coked the clocks ticking there.
if things are as they should be you'll have an hour glass shape on the top, of light deposits and still be able to read the arrow and dimple and whatever they got in wirting on there- if any. if the piston looks good, it is. same with the bore. there might be some light carbon tracking and lines from the ring gap. if the hone is clearly visible? yay! if you are starting to get signs of blowby- brown stuff below the ring, get ready to ring it- real soon. a fresh ring = a longer lasting piston. ignore it and kaboom.
if you run a premium oil the PV's should have nothing on them but oil...no coke. none in the pipe either. sorry- lots of flash-back from the camera. but it dont look too bad for the relentless abuse it gets. im starting to get a trace of blow-by on the ring. so yeh, wont be long for that.
regardless. every so often i like to pull the pipe and boot and have a look see on my smokers.
first- wash yer bike. i never wash mine (unless its muddy- then it gets blasted ASAP). its a dirt bike, it's posed to be dirty! i just wipe it off and service it. but for this? wash it, detail it. then, yank the sub frame intact. lay it on its side. then carefully remove the filter and look for trash. mines pullin some in from somewhere, prolly the clogged air filter that was in it (not cleaning im tossing it, it's had two cleanings so its now worn out)- so i'm splitting the boot (goes in the dishwasher no heat dry) and gluing it together now that it's warm here. (i know lazy bones shoulda done that first day...). a little teensy bit of super fine dust say as fine baby powder or the like on things aint no big. look for dirt, rocks, bushes. et. al..
next- keep cleaning! get everything off the frame shock and whatnot that might get knocked off and land into said boot during replacement of subframe! plug the fuel line, remove the spark plug and tape over that hole too. now that's stuff nice and clean, inspect everything with a fine tooth comb. remove the paper towel from the carb, hold it open and check it's tonsils, see the reed block? make sure there's no chipping, burrs, etc. if something dont look right? it aint! these DO hour out. replace them regularly. softer ones = more bottom, stiffer ones less bottom better top end perf.
next make triple sure the frame is clean and so is the head pipe. remove same and inspect for coke, and, stuff you missed falling off and landing in there. like the exhaust spring that just fell in there!!!
grab a light and slowly move the piston with the kicker. look for blowby, scoring, cracks, coke etc...check the PV's for coke. if they aer coked stop- clean them, NOW...not later, NOW. move the piston to BDC, when it's down look at the intake side of things. you can also see the head in some cases. with the plug out you can sometimes see the piston top. if its coked the clocks ticking there.if things are as they should be you'll have an hour glass shape on the top, of light deposits and still be able to read the arrow and dimple and whatever they got in wirting on there- if any. if the piston looks good, it is. same with the bore. there might be some light carbon tracking and lines from the ring gap. if the hone is clearly visible? yay! if you are starting to get signs of blowby- brown stuff below the ring, get ready to ring it- real soon. a fresh ring = a longer lasting piston. ignore it and kaboom.
if you run a premium oil the PV's should have nothing on them but oil...no coke. none in the pipe either. sorry- lots of flash-back from the camera. but it dont look too bad for the relentless abuse it gets. im starting to get a trace of blow-by on the ring. so yeh, wont be long for that.
