McCulloch Chain Saws

[heimannm]

I have a KMS4 that will run about 5 minutes, then the coil gets hot and it stops. Let it set for 15 minutes or so and you're good for another 5 minute run.

Mark

 

[usmcbuckwild]

I have a document has the 840 in it and lists interchangeable parts . It is too big to attach here, so it is in your inbox in another forum O P E

Received and replied. Thanks again

 

[Willeywoodcutter]

Ok guys this saw is killing me...I put NOS bearings in it put it back together and it seized again because the pin slid over and the needles fell out again..
I don't get what I'm doing wrong I've put the saw together 3 times everytime the same thing happens..
So how are you supposed to install the piston pin so it doesn't slide out cause I don't know apparently..I just press it in with a c clamp but it always seems like it presses to easy and i can push it with my finger so its not a tight fit any tips are appreciated..btw I used Lil red barn pistons and pins maybe they are junk Idk hard to say if its the parts or the installer(me). End rant

 

[heimannm]

Either the wrist pin or the connecting rod have too much wear. You don't have enough interference to hold the wrist pin in the proper position; the fact that it moved easily should have tipped you off.

The service manual says if a new piston is used, the wrist pin should be replaced as well. In your case I expect you need to start with a new connecting rod too.

Mark

 

[rwoods]

Ok guys this saw is killing me...I put NOS bearings in it put it back together and it seized again because the pin slid over and the needles fell out again..
I don't get what I'm doing wrong I've put the saw together 3 times everytime the same thing happens..
So how are you supposed to install the piston pin so it doesn't slide out cause I don't know apparently..I just press it in with a c clamp but it always seems like it presses to easy and i can push it with my finger so its not a tight fit any tips are appreciated..btw I used Lil red barn pistons and pins maybe they are junk Idk hard to say if its the parts or the installer(me). End rant

If you used a new pin then try the old one to see how tight it fits. Ron

 

[Beetlejuice]

If you used a new pin then try the old one to see how tight it fits. Ron

Just being funny here, but sounds like a loose nut behind the controls

 

[emf123]

I was lucky enough to snag this issue of Chain Saw Age. The article on the movie isn't very good but the rest of the magazine is gold.

 

[emf123]

A nice article on the new SP125!!

 

[emf123]

Check out the handlebar on this Japanese Mac.

 

[emf123]

Interesting chain idea!

 

[emf123]

And if you though the Mcculloch .354 pitch chain was a bad idea

 

[fossil]

Can anyone guess what this model is? Photo from an upcoming auction

 

[PogoInTheWoods]

btw I used Lil red barn pistons and pins maybe they are junk

I don't think I'd try em a third time. Compare the original OEM pin with the LRB pin as Ron suggested. I'll go out on a limb and guess the LRB is significantly smaller in diameter. And how are the needles seizing the top end without damaging the cylinder beyond use-ability?

 

[PogoInTheWoods]

Can anyone guess what this model is?

1-72?

 

[Beetlejuice]

Can anyone guess what this model is? Photo from an upcoming auction

View attachment 635345

I do believe that is a 1-70.

 

[PogoInTheWoods]

Here's a 1-72 that I have. The saw in the auction pic could also possibly be one of the larger 7x's. Pic references for those seem scarce but I believe they may have had a yellow airbox cover?

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[fossil]

I looked through a lot of pics and I thought it might be a 1-72 as well. Yours sure looks like the one in the pic.

 

[sawfun]

Interesting chain idea!
View attachment 635340

I remember the Omark testing area which you could clearly see from the road in the 70's and early 80's. It appeared that they used mostly what looked like 3 to 4 foot logs. Those were common log sizes by that time. Funny, I still drive by the same area every day.

 

[sawfun]

Can anyone guess what this model is? Photo from an upcoming auction

View attachment 635345

790?

 

[rwoods]

Beautiful day to cut with a cool breeze, clouds and the mountains in the distance:



But it got hot quick - low 80's. I didn't bring any MACs as I was planning to cut small stuff. Not to worry, our local MAC man Brian brought some of his.



But even he got too hot - MAC was fine.



Ron