Husqvarna 372 Repair Thread

[Czed]

Absolutely top notch thread @Onan18
I may tackle a few of mine now.
Bravo!!!

Done yet?

 

[PogoInTheWoods]

Great thread, just what I was looking for! I have at least 5 372’s with bad cranks, so now I’ll split my first case.

HLS has FarmerTec crank kits on sale with bearings, seals, and gaskets if you wanna go that route. Cheap way to get one up and running. Lotta guys are runnin' those complete kits with decent results. The crank can't be much worse than OE on one o' those.

https://www.hlsproparts.com/ProductDetails.asp?ProductCode=H35365-DNS

 

[Gypo Logger]

HLS has FarmerTec crank kits on sale with bearings, seals, and gaskets if you wanna go that route. Cheap way to get one up and running. Lotta guys are runnin' those complete kits with decent results. The crank can't be much worse than OE on one o' those.

https://www.hlsproparts.com/ProductDetails.asp?ProductCode=H35365-DNS

Thanks for the heads up on the crank kits. I’ll order a few and see how they work as I’ve had good luck with Farmer Tec.

 

[Czed]

Thanks for the heads up on the crank kits. I’ll order a few and see how they work as I’ve had good luck with Farmer Tec.

Me too haven't lost a china crank yet.
Small amount more vibes than my oem 372s
But not bad at all.

 

[Gord]

Wondering about FTec cranks, got some on my shelf of cranks but wasn't too sure so there they sit, usually have enough oem ones around but would like a source of good cranks, done about 7 - 372xp's this last while and most of my saws go to fallers arborists so just have to know a crank will last???

 

[dustinwilt68]

I don't trust any functional, mechanical part of farmertech in a saw that I would give to a Faller or arborist, clutch cover, top cover, tank, sure but definitely not a crank or P&C.

 

[Gord]

Have been using OEM cranks and either oem top ends or Meteor kits which have had great feedback on but was wondering if there was a company that make high quality am cranks.

 

[PogoInTheWoods]

F-Tec would probably be your best shot out of all the knock-offs (which could be all the same anyway). As previously mentioned, folks have been running them with varying degrees of success. Also as alluded to, OEM 372 cranks can be a crap shoot too, so pick your poison. The last two 372's I've rebuilt came to me with toasted big ends which isn't as uncommon as some would have you think. Good used OEM cranks went back in, but I would have gone F-Tec after conferring with each customer first and receiving approval to use them instead.

As for the F-Tecs, check them over very carefully before committing to any particular one for a build, particularly the small end needle cage fitment. I have seen very poor tolerances there which is just a failure waiting to happen.

 

[Gord]

Pulled a 372 down the other day and crank big end and everything above it scrap metal bin food... was all F-tec most likely as I know who owned it and just loves his F-tec parts but saying that, last week I pulled down an oem and it was pretty well the same thing but the majority of the time the older xp's tend to have a better made crank and bearings and 4 out of 5 usually are pretty good depending on weather the owner decided to completely run them until it was a smoking mess that finally quit or shut it down because the knew something was not right

 

[Gord]

372xp xtorq problem - normally I take most of these and make xp's out of them but the cylinder was in nice shape so rebuilt it as as is, was a 365 but changed the plates on the sides of the cylinder , now it runs good except for one thing, after you come out of the cut the idle is too low and eventually will go back to normal after a bit, - don't think it's the carb, could it be the blue coil acting up, almost sounds like a timing thing, like you retarded the timing for about 30 seconds or less??? Just wondering if this is a starting thing built into the coil but it's brains are scrambled?

 

[cus_deluxe]

372xp xtorq problem - normally I take most of these and make xp's out of them but the cylinder was in nice shape so rebuilt it as as is, was a 365 but changed the plates on the sides of the cylinder , now it runs good except for one thing, after you come out of the cut the idle is too low and eventually will go back to normal after a bit, - don't think it's the carb, could it be the blue coil acting up, almost sounds like a timing thing, like you retarded the timing for about 30 seconds or less??? Just wondering if this is a starting thing built into the coil but it's brains are scrambled?

they do have something built in for starting, ive seen em where they tend to “surge” at idle, and my understanding is thats the coil coming in and out of the advance/tard. maybe ur idle setting is right on the edge...

 

[Stump Shot]

372xp xtorq problem - normally I take most of these and make xp's out of them but the cylinder was in nice shape so rebuilt it as as is, was a 365 but changed the plates on the sides of the cylinder , now it runs good except for one thing, after you come out of the cut the idle is too low and eventually will go back to normal after a bit, - don't think it's the carb, could it be the blue coil acting up, almost sounds like a timing thing, like you retarded the timing for about 30 seconds or less??? Just wondering if this is a starting thing built into the coil but it's brains are scrambled?

If not the coil, the carb could be out of "sync" so to say in the Lo setting. in other words a touch lean and the throttle closed to compensate for idle speed. So when taken off of WOT it surges for fuel, sometimes even killing the saw in some cases. Reset Lo and idle speed settings and possibly the Hi side too if Lo was altered much.

 

[Gord]

Was messing with that and just get it right the way I normally set up carbs, does its thing nicely not under load , cuts nice then it does its low thing and the returns to a proper Idle... have a near new carb, I will try that and also change coils . had another 372 xp not wanting to idle to a low speed area or it would just shut off... changed coils and worked like it should. Spark plug looks like a normal color... let ya know what happens.... might leave it alone today or it might become one of my slightly modified XP'S

 

[PogoInTheWoods]

Check the throttle cable operation from end to end for anything funny there and maybe even the carb throttle shaft for binding or other weirdness that could be physically impeding the carburetor when you let off the throttle.

The coil shouldn't be 'doing' anything except counting revolutions for any built-in timing characteristics and firing accordingly as you decelerate pulling out of a cut. Doesn't know or care about anything else except the kill switch unless it's an Auto-tune system.

I'd say port timing (depending on what happened there with the cylinder swap) or carburetor as mentioned or combination of both.

'Course you could eliminate the suspense factor for us by just putting a black coil in it and see what happens! LOL

 

[PogoInTheWoods]

Looks like we crossed in the mail, Gord.

And I should also qualify my coil observations with 'if it's a good coil'.

Good luck with it. You certainly have me curious.

 

[Stump Shot]

Was messing with that and just get it right the way I normally set up carbs, does its thing nicely not under load , cuts nice then it does its low thing and the returns to a proper Idle... have a near new carb, I will try that and also change coils . had another 372 xp not wanting to idle to a low speed area or it would just shut off... changed coils and worked like it should. Spark plug looks like a normal color... let ya know what happens.... might leave it alone today or it might become one of my slightly modified XP'S

Like pogo alluded to, a worn throttle shaft will mess with things too.

 

[Gord]

well changed both yesterday and still doing the same thing, carb was off a different saw that was 3 weeks old and got straight gassed- (owner wanted it to be converted to one of my xp builds with a little magic) so after supper last night decided to fire up my 1980 FXWG dependable Old Harley and go for a ride and air out my brain, good plan and when I got home I decided I'm going to take that saw and make what I like best, an xp and steel caged bearings, will go back in etc, -I have done a lot of 372's but rarely put them back to xtorq's , spent more time trying to fix the problem than building a whole saw.

 

[Gord]

Took the cases apart and all the bolts that hold it together were not very tight at all... well bottom end all together, tank etc. almost ready to start fitting the cylinder and piston and doing the work on the cylinder after all is said and done should have the saw up and running tomorrow afternoon, just feels better to know what's inside - my own saw is a ported by walkers 372xpg which I rebuilt and just happened to have one excellent shape cylinder in my stash

 

[Terry Syd]

This issue with the big end bearing, what oil ratio do you guys recommend?

 

[Gord]

Finished up yesterday on my now 372xp,- vac- pressure test 100% at 7lb's, nice, went out and cut some wood to dial it in, runs like it should, XT P&C came off in good shape. Kinda wondering if because the problem only showed up when she got got a few cuts into her if the not so tight case bolts were the problem because when I pulled the original cylinder it seemed very carboned up for an xt maybe sucking in a little bar oil?