Chain won‘t cut without pressure

[ferris]

Hey guys,
i have a problem with my chain.
The chain wont cut without pressure, no self feeding.
When i push the chain cuts and make good chips.
I already lower the rakers, but that don’t change anything.
I checked them with a gauge and they are lower then that.
I remove some material on the rakers allready, as u can see.

Stihl RS chain 3/8
5,2mm round file.
Nearly new 16“ Stihl bar

What can i do?

 

[ferris]

Some more pics

 

[Cat 525]

Try a. 7/32 file. Your points are still dubbed back.

 

[dall]

A lot of hook on top like cat said use smaller file stihl says 13/64 for 3/8 and Oregon 7/32

 

[ferris]

Try a. 7/32 file. Your points are still dubbed back.

Can u explain that a little bit more, don’t know what you mean.

 

[dall]

Can u explain that a little bit more, don’t know what you mean.

either you are using wrong size file or you are filing too deep

 

[hseII]

Hey guys,
i have a problem with my chain.
The chain wont cut without pressure, no self feeding.
When i push the chain cuts and make good chips.
I already lower the rakers, but that don’t change anything.
I checked them with a gauge and they are lower then that.
I remove some material on the rakers allready, as u can see.

Stihl RS chain 3/8
5,2mm round file.
Nearly new 16“ Stihl bar

What can i do?

View attachment 170642 View attachment 170643 View attachment 170644 View attachment 170645 View attachment 170646

What is your filing method?
File size?

Take a picture, we are visually paired.

I’ve found these file guides to be more than helpful when things, ( mostly me), run amiss.

https://m.stihlusa.com/products/accessories/chain-saws/completefilekits/




Sent from my iPhone using Tapatalk Pro

 

[ChipsFlyin]

What they said ^^^^ Plus it looks like you may have just grazed something ( stone, dirt, nail, dirty wood, maybe pressing real hard on frozen wood...) and messed up the top of the cutter. When that happens the cutter is pushed down and rubs on the wood instead of entering at an angle. Unless the cutters are filed back past that point self feeding is not likely to happen. I circled what I'm talking about. If you look at your other pics that show the top of the cutters they are all the same.

 

[Wonkydonkey]

The file 20% above and 80% below should give you the correct angle on the top. Although stihl say 5.2mm and Oregon say 5.5mm file for a 3/8 there’s not much difference in the resulting angle on the tooth.

 

[Wonkydonkey]

The file guide that hsell linked to holds the file at the correct height in the tooth

 

[Lone Wolf]

either you are using wrong size file or you are filing too deep

Yup he is getting the bottom look at the top they aren't sharp at all! Once it gets this way its hard to correct especially if you ain't real experienced.

 

[OldJack]

Husky roller guide is a pretty handy quick check tool.

Nice for touching up on a tailgate too.

View attachment 149451

I've had better luck with the Hedgerow approved Husqvarna roller guide.

 

[Fish]

You need to remove the damaged metal. If you can "see" it, it is dull.

 

[old guy]

Basiclly, your file is too low, it's not sharpening the top plate.

 

[huskyboy]

Lift up on the file a touch... you know you have it right when filings start to come up over top plate... you know the rakers are right when you can bore cut smoothly, yet self feed with ease. Set them with a gauge to start, then tune to the particular saw. I usually don’t have to punch out the gullet until the chain starts to get half worn if I hold the file just right (cutters get smaller the more a chain is filed).

 

[Marshy]

I agree, looks like your file is low. If you roll the file up away from the bar as you file it will climb the tooth and get you going in the correct direction.

 

[Altamaha]

When you lightly draw your finger across a sharpened cutter, you should bleed! They should be razor sharp when you are completed with the sharpening.

Below guides will be a real help. They will keep the top of the file above the top of the cutter, where it should be. The Grandberg on the top is the best, you can adjust the angles and lock them. The middle one is OK. The bottom one is sort of so-so.

Use a 7/32" diameter file on both 3/8 pitch chain and .404 pitch chain.

I have sharpened many a chain with the Grandberg. Now have a Super Jolly grinder, read the Super Jolly thread.

 

[Lone Wolf]

Also if you need to use reading glasses when you sharpen it so you can see what the hell you are doing. No offense meant!

 

[Altamaha]

Also if you need to use reading glasses when you sharpen it so you can see what the hell you are doing. No offense meant!

Hey how did you know? I use 2.0 magnification.

 

[Altamaha]

Neighbor across the road has about 80 acres. Lots of Pacific Big Leaf maple. He dropped a few trees in the past months and occasionally tries to saw up the logs into firewood.

I groan when I hear his saw, his chains are so dull that the saw bogs down and dies. Tempted to invite him over for a chain sharpening session.