What's on your bench?

[beaglebriar]

I usually have no problem tuning but this one is real finicky. I thought I had it just right but apparently not. Doesn't take much for it to be off.


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I'm working on a J red 535 right now with the same issue. Just did a complete rebuild and leak down test was good.

I'll be pulling it back apart to recheck everything and possibly a carb swap.

Some saws are just a pita and this is one of them.

 

[cease232]

I'm working on a J red 535 right now with the same issue. Just did a complete rebuild and leak down test was good.

I'll be pulling it back apart to recheck everything and possibly a carb swap.

Some saws are just a pita and this is one of them.

I'm considering it. I'll have to see if I have another SDC carb to mount up.


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[Keith Gandy]

026 in for servicing

 

[Mattyo]

@Mattyo got me fixed right up. The low end is still pretty finicky though. Very narrow range between just right and flooding.


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I had the same issue on a 372 ... used AM carbs, both were finicky ... used an oem carb and it tuned fine. I dunno what it is about the am carbs, but they just didn't flow right at idle. wish I could figure out that issue... anyway, you may need to swap out the carb to get it to run ...not finicky.

btw, i take no credit for the idea... @jmssaws is the man

 

[jmssaws]

I had the same issue on a 372 ... used AM carbs, both were finicky ... used an oem carb and it tuned fine. I dunno what it is about the am carbs, but they just didn't flow right at idle. wish I could figure out that issue... anyway, you may need to swap out the carb to get it to run ...not finicky.

btw, i take no credit for the idea... @jmssaws is the man

Have you checked the pop off pressure?
Finicky low is generally not enough pop off.

 

[Mattyo]

ie, needs a stronger spring on the needle? ie, stretch the spring a bit?

 

[jmssaws]

ie, needs a stronger spring on the needle? ie, stretch the spring a bit?

I would make shims from a beer can or something
Try 010 and see if it helps.
Stretching the spring don't last long

 

[Mattyo]

Interesting . ..up the preload...got it.

 

[cease232]

After running great last night It was a PITA this morning after sitting. I'll test the pop off and try to shim it today. Will report back later. Thanks Jim.


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[cease232]

Checked pop off pressure, seemed to be around 20psi. Also found a small leak on the inlet seat so I replaced the needle with the old one and the leak resolved. Anyone have any idea what the pop off pressure should be? I did shim the spring about 005.
After all this the saw gave me even more fits. I read you can damage the diagram checking pop off. Wondering if I put to much pressure on it.


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[TJ the Chainsaw Mechanic]

Waiting on a new coil for an 04 briggs engine. Surprisingly was only $31 for OEM.
Have an MS180 tuned up, just needs a new bar as the old one is shot.
Carb kit for the big mac came in.
Lot's ta do.

 

[Onan18]

Do I even have to say it?

 

[dall]

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Do I even have to say it?

yay boat anchor ? lol

 

[beaglebriar]

yay boat anchor ? lol

Not cool...

 

[dall]

al said there is a part in the box that the xmas saw came in for onan i am to give him

 

[Onan18]

al said there is a part in the box that the xmas saw came in for onan i am to give him

Yes sir, an intake elbow for a 262, thank you very much and an extra big thank you to @drf256

 

[jmssaws]

Checked pop off pressure, seemed to be around 20psi. Also found a small leak on the inlet seat so I replaced the needle with the old one and the leak resolved. Anyone have any idea what the pop off pressure should be? I did shim the spring about 005.
After all this the saw gave me even more fits. I read you can damage the diagram checking pop off. Wondering if I put to much pressure on it.


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20 is about normal
I generally raise it 2 to 4 pounds

 

[jmssaws]

Got a couple beauty's on the bench.
My new to me 394 and a original red light 066

 

[jmssaws]

Got a couple beauty's on the bench.
My new to me 394 and a original red light 066
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It's just got a 395 sticker

 

[X 66 stang347 X]

Are these customers saws or a couple you plan on selling? Nice saws