The Death of a Saw (and I'm a Dick)

[drf256]

The part in parenthesis is well known by many and self evident.

So here is a ported MS360 with a jug that had 5 hours of grinding in it. The final finish on the ports was first a 3/8 diamond ball followed by a finer 1/8" diamond ball. Then honed with a brake hone and then finished with scotch brite. Was pristine afterwards.

Here's the video where it's not running right. Was sluggish and odd feeling in wood. I didn't hit the switch at the end. It just died.

 

[drf256]

I Re-ringed the piston with new Cabers.

All 4 bearings were perfect and still are.

Both ring pins are fine.

 

[drf256]

More piston pics.

Exhaust and intake port perfect.

 

[drf256]

Here's the top caber

 

[drf256]

 

[Onan18]

Dang it Doc that's rough, but it happens to the best of us. At least it died while you still had it, better that than having to eat the shipping on top of everything.

 

[Onan18]

View attachment 52793

SO MANY PEANUTS!

 

[drf256]

SO MANY PEANUTS!

So little time...

 

[drf256]

So what happened gents?

 

[RI Chevy]

Ut Oh. WTF happened?

 

[Onan18]

So what happened gents?

I think I know, but I will keep my mouth shut for now.

 

[RI Chevy]

Overheated and caught the ring on the edge of the port? Nikasil coating bad?

 

[cus_deluxe]

I was about to say circlip let go but then saw both of them in the pic. Carb butterfly screw got sucked in?

 

[Barneyrb]

Not enough port bevel

 

[Fruecrue]

Hit and busted the spark plug?

 

[cus_deluxe]

Wait i know, a packing peanut was lodged in the carb and you missed it

 

[malk315]

Your thumb is over the wrist pin area on 1st piston pic then not in 2nd piston pic and is that a chunk missing? Pieces of ring in a pic. Did a piece of ring get involved with edge of transfer tunnel? Jug has chunk in it too looks like foreign matter got it (piece of ring)? I'm a newbie so not sure.

Sent from my XT1585 using Tapatalk

 

[Fruecrue]

Decomp came apart

 

[drf256]

Wait i know, a packing peanut was lodged in the carb and you missed it

Nope. I'm extremely careful with saving every packing peanut I come by. Saving for a special shipment

 

[cus_deluxe]