What's on your bench?

[Woodslasher]

Found a $20 Stihl 026 powerhead today at a thresheree swap meet. Compression was pretty low, so I pulled the muffler. Everything visible through the exhaust port looked alright, so I proceed to remove the cylinder.
View attachment 307861 View attachment 307862
Anyone ever see this before?? As far as I can tell, the top ring wore thin on the one side and began to fret back and forth in the groove... until there wasn't enough compression left to make the magic happen. Cylinder is in good shape, so I think this will be an easy fix.

I'm just amazed that thing lasted that long. I'da thought the comp level would have been way too low to run long before that kinda stuff would happen.

 

[Firewood Hoarder]

I'm just amazed that thing lasted that long. I'da thought the comp level would have been way too low to run long before that kinda stuff would happen.

That's why I shared the pictures, this is something I have never seen before haha. Maybe it failed over the course of one tank, and the second ring sealed enough to keep it lit at speed? Just strange...

 

[JohnnyBlade]

Found a $20 Stihl 026 powerhead today at a thresheree swap meet. Compression was pretty low, so I pulled the muffler. Everything visible through the exhaust port looked alright, so I proceed to remove the cylinder.
View attachment 307861 View attachment 307862
Anyone ever see this before?? As far as I can tell, the top ring wore thin on the one side and began to fret back and forth in the groove... until there wasn't enough compression left to make the magic happen. Cylinder is in good shape, so I think this will be an easy fix.

Thats crazy! Ya that thing was playing some music in there at least the jug is fine. Id definitely keep that trophy piston on the shelf

 

[RI Chevy]

Maybe wrong thickness rings were used??

 

[Firewood Hoarder]

Maybe wrong thickness rings were used??

No, the width was correct.

 

[Firewood Hoarder]

Thats crazy! Ya that thing was playing some music in there at least the jug is fine. Id definitely keep that trophy piston on the shelf

Yeah, this one is going on the wall of shame, for sure!

 

[Maintenance Chief]

View attachment 307848

Neighbor brought me his 365. Says it died in the cut and wouldn’t start there after. Certainly wouldn’t idle.
I told him compression feels low and I’ll look at it.
I started looking and found the fuel filter was crappy. So replaced that and it seemed to make much better. Started and idled fine. Although it was unimpressive in a cut. (This is a Special it turns out)
Looked more today and found this.
What’s interesting is that the machine marks are in decent shape for a 1998 saw and this guys cut 4 cord a year. Except for the FW side of the exhaust, where it’s mollyhocked.
Any possibility this is carbon roll back from the exhaust opposed to going lean? And could lean be from a clogged filter?
Compression is 100 at this condition.

Yes on carbon, but it could even have been mud wasps. If the saw sits for a while all kinds of critters can find their way into the muffler.
Or if your a real conspiracy theorist !?

 

[Woodslasher]

0 for 3 tonight. New carb was installed on the trimmer but it still just dies within 10 seconds, o-ring I ordered for the 3120 is the wrong size (it looks like a 272 o-ring), and I noticed the big end bearing on my 461 has a crack. Just one of those days.

 

[RI Chevy]

Crap. When it rains it pours.
Just thinking outloud, could it be bad tank vent?

 

[WillG]

Looking forward to a hot shower tonight. Cold showers suck!

Sent from my E6910 using Tapatalk

 

[Woodslasher]

Crap. When it rains it pours.
Just thinking outloud, could it be bad tank vent?

It's actually the cap that's vented, it has one of those little brass pellet filters, but I'll try cleaning it.

 

[sledneck22]

First top handle saw for me. Just a rebuild with new bearings seals gaskets and cleaning. I'll get it running and broke in to see what all the hype is about then modify from there if i deem necessary.
after a long night in the shop, I was rewarded with a beer. Just waiting for new seals from my dealer so It can keep going together.

 

[WillG]

We have ignition! Motor replacement was a breeze. Original motor was 23 years old. Looking forward to a hot shower tonight.

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[Woodslasher]

Topic #1, vent on the 235RII. I took the cap apart, everything checks out, the duckbill still works etc. I cleaned and re-assembled it, but I haven't actually test run it. Maybe I should pull the fuel filter off?

 

[Woodslasher]

Topic #2, my 461 crank bearing. I noticed some pretty severe scratching on the new piston after roughly 2 tanks of run time. I also noticed what appears to be a crack in the big end bearing. Am I right to assume the scratching is being caused by the big end bearing giving out? The crack is the shiny scratch third needle up from the bottom of the pic.

 

[TALLGUY]

My 19 hp Kawasaki stopped cold the other day. Drained the carb and fuel line. Think I found my issue. Lot of water and dirt. It's a old mower. I was wondering why it had no power.

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[huskyboy]

Topic #2, my 461 crank bearing. I noticed some pretty severe scratching on the new piston after roughly 2 tanks of run time. I also noticed what appears to be a crack in the big end bearing. Am I right to assume the scratching is being caused by the big end bearing giving out? The crack is the shiny scratch third needle up from the bottom of the pic.
View attachment 308109 View attachment 308110 View attachment 308111 View attachment 308112

Looks like the rod got hot.

 

[RI Chevy]

My 19 hp Kawasaki stopped cold the other day. Drained the carb and fuel line. Think I found my issue. Lot of water and dirt. It's a old mower. I was wondering why it had no power.

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Just curious. Did the mower have an in-line fuel filter on it? If it did, was it changed yearly or part of a regular maintenance schedule?

 

[TALLGUY]

Just curious. Did the mower have an in-line fuel filter on it? If it did, was it changed yearly or part of a regular maintenance schedule?

I put one in at the beginning of the year. I'v been torturing it all summer mowing several acres a week to get the bugs worked out. Figured out the fuel cap leaks.

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[RI Chevy]

Thanks. Just curious. I think general rule of thumb is to change once a year or every 100 hours.