Author Topic: Husqvarna 372 XP X torq. testing.  (Read 205 times)

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Offline 3000 FPS

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Husqvarna 372 XP X torq. testing.
« on: September 14, 2022, 08:04:21 pm »
So I have been working on this 372 XP and it acts like it has a bad air leak somewhere.   
I was going to check the crankcase to see if it will hold pressure. So, what have you guys done to block of the intake.
The exhaust and impulse are easy, but the intake is a little different on this thing. 
PP 505, 475, 445.

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Offline Cut4fun .

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Re: Husqvarna 372 XP X torq. testing.
« Reply #1 on: September 15, 2022, 06:18:44 am »
There is a oem tool and Nick makes a 3d printed one too.

I'll see if I can find them. They are posted here in a pic.

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Re: Husqvarna 372 XP X torq. testing.
« Reply #2 on: September 15, 2022, 06:19:56 am »
See if Nick's in this pic. Orange at bottom. Should give you a idea how to make something.
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Offline Cut4fun

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Re: Husqvarna 372 XP X torq. testing.
« Reply #3 on: September 15, 2022, 06:44:39 am »
homemade deal a guy made to use.

Just ideas without oem or nicks 3d one

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Re: Husqvarna 372 XP X torq. testing.
« Reply #4 on: September 15, 2022, 06:46:49 am »
oem listing



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Offline 3000 FPS

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Re: Husqvarna 372 XP X torq. testing.
« Reply #5 on: September 15, 2022, 10:55:47 am »
Ok Kevin thanks.     I like the idea of using a socket and compressing it up tight against the intake using the carb screws.    I think that would be the easiest to make.      I already have a spark plug that I modified a long time ago for pumping the pressure into the crankcase.   

Thumbs up.
PP 505, 475, 445.
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Offline 3000 FPS

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Re: Husqvarna 372 XP X torq. testing.
« Reply #6 on: September 15, 2022, 01:39:58 pm »
Ok so I modified a socket that should work and have a block off plate to fit over end of the socket with a piece of rubber.
I will take it into town on Monday and try it out.   Should work.   

Thanks for the info.   
PP 505, 475, 445.
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Offline 3000 FPS

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Re: Husqvarna 372 XP X torq. testing.
« Reply #7 on: September 19, 2022, 07:50:38 pm »
Went into town today with socket in hand. 
What I found was the base gasket leaking like crazy on the clutch side right below the transfer port.   
I could not get it to build pressure with a hand pump, so I hooked up a compressor to it and would blow short burst of air.   Then I could see the soapy water moving around.   I also found the screws that hold the oiler in place go right into the crank case and I had to put the screws in place to stop air from there.
I will do another pressure check on it after repairing the base gasket.   I also checked the cylinder bolts, and all were tight.   
So, who knows what someone did before I started looking into this saw.    This is one case where a pressure test was the only way to find out what was going on.   
PP 505, 475, 445.
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Re: Husqvarna 372 XP X torq. testing.
« Reply #8 on: September 20, 2022, 06:26:32 am »
Have seen the sucked in base gasket deal here before.   OEM and farmertec on 372's
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Re: Husqvarna 372 XP X torq. testing.
« Reply #9 on: September 27, 2022, 11:09:02 am »
Installed the new base gasket with a little yamabond.   Let it sit for 24 hours and the saw fired right up and tuned in real nice.

Thanks for the help Kevin.   
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