afleetcommand
Pinnacle OPE Member
A topic that is sure to draw fire, of course that is the spice of life right? First a back drop, there were a few years the X-torq 372's seemed to like to eat their PTO side bearings and bearing pockets.... WHICH Husqvarna addressed obviously as that NO longer ( after 2016? 17?) seems to be a problem. A few things seem to have been changed like wrist pins and cranks to balance things better? But to the subject. WHAT to do when you see a 372 XT that won't idle, runs lean, all the things common to those saws. First obviously diagnose the issue! Often the back to basics approach reveals something simple like a fuel line or water in the gas. And remember updates also to ignitions and carb's help those earlier 372xt's run better as well. A "Brake Clean" test is a simple way to check bearings.....and if when using that red tube on the brake clean can to shoot some brake clean under the clutch when that saw is running...and the saw just stops...dead....THAT is when the next subject starts. If you can kill the saw with brake clean like that, typically there are only two reasons...first a bar oil pump screw backed out (NEVER seen that happen, but its possible ) or the PTO side seal leaks allowing brake clean to get sucked into the crank case, drawn up to the combustion chamber where it fubars the combustion characteristics of that gas air mix...saw dies.
Two situations probable IF its the seal, first the bearing came apart and the crank shaft wobbles around opening up that seal like a kids finger in a peanut butter jar... ( yeah....you guys have better analogies ) Second, the vibration literally jack hammers opens up the PTO side bearing pocket in the cases allowing air to be drawn in around the outer diameter of the bearing....or some combination of jack hammer and peanut butter jar finger.
Question is what's next.
1) Turn the carb as rich as you can and sell it to the next guy...assuming it hasn't fragged yet.
2) Tear it down and HOPE the bearing pocket isn't opened up, put in new bearings and seals....then back to plan 1, get it running and send it down the road.
3) Have a little fun and assuming the cases/ bearing pocket is still good, build it back with better bearings, seals, and mod the thing and run it until it frags! But have fun doing that. Gut the intake, muffler mod, either deck the cylinder .020 or build it with three bond 1184 w/o gasket...all fun. Pull the transfer caps and play around in there...all fun all end up with a strong saw.
3a) Same as above but add a Original Edition Top End/Intake pipe/ and intake bracket.
Or if the cases are completely shot.....plan 365 48mm special... Next three video's are first the realization the cases were bad, then second video the realization the top end I used lost it's plating....and the build which ensued is the "Armageddon" build for worst case with any Husqvarna 372 be it OE or XT...what ever...but the cases needed to be replaces and so did the top end. This is simply making use of Husqvarma 372 Bones mixed with AM parts to keep the cost down. A true Junk Pile Build, but one I think will actually last...
So the LAST video in the 3 part 365 48mm build series, FIRST...HOW did it run? Because that's what everyone wants to know right?
Two situations probable IF its the seal, first the bearing came apart and the crank shaft wobbles around opening up that seal like a kids finger in a peanut butter jar... ( yeah....you guys have better analogies ) Second, the vibration literally jack hammers opens up the PTO side bearing pocket in the cases allowing air to be drawn in around the outer diameter of the bearing....or some combination of jack hammer and peanut butter jar finger.
Question is what's next.
1) Turn the carb as rich as you can and sell it to the next guy...assuming it hasn't fragged yet.
2) Tear it down and HOPE the bearing pocket isn't opened up, put in new bearings and seals....then back to plan 1, get it running and send it down the road.
3) Have a little fun and assuming the cases/ bearing pocket is still good, build it back with better bearings, seals, and mod the thing and run it until it frags! But have fun doing that. Gut the intake, muffler mod, either deck the cylinder .020 or build it with three bond 1184 w/o gasket...all fun. Pull the transfer caps and play around in there...all fun all end up with a strong saw.
3a) Same as above but add a Original Edition Top End/Intake pipe/ and intake bracket.
Or if the cases are completely shot.....plan 365 48mm special... Next three video's are first the realization the cases were bad, then second video the realization the top end I used lost it's plating....and the build which ensued is the "Armageddon" build for worst case with any Husqvarna 372 be it OE or XT...what ever...but the cases needed to be replaces and so did the top end. This is simply making use of Husqvarma 372 Bones mixed with AM parts to keep the cost down. A true Junk Pile Build, but one I think will actually last...
So the LAST video in the 3 part 365 48mm build series, FIRST...HOW did it run? Because that's what everyone wants to know right?
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