Faulty Bar or Faulty operative?!

[TimberCutterDartmoor]

Very new 25" bar; sprocket seems to have sunk altho no play on bearings; noticed smoke off bar tip and chain links running on actual tip; obviously the bar is now goosed; oiler up at max on a MS460 but must admit flow seemed poor from the hole (very new saw too; barely used). Photo shows how chain which kept slackening wore its own groove and left wafer thin outer edge...

[Stubby]

I would say , as you point out , that its not oiling correctly for what ever reason .Hole blocked in the bar ( happens when you turn the bar and forget to clean out the other inlet hole ) . Oil pickup blocked ,faulty pump , striped drive gear to pump . All I can think of at the mo .....

[Rob D]

Tricky to say but as said could be from not enough bar oil getting onto the chain... if the chain then getting very hot this could have been why it kept slackening off... but bit of a guess really... with the oiler up to max and the bar and chain off is it pulling through a steady stream of oil?

[Sburdy]

Have you been doing lot's of boring cuts with it??

[TimberCutterDartmoor]

No boring; was using biotop oil tho not oregon mineral ??? Never noticed loads of oil coming off when you lube test run over a dry log or whatever. Was ringing sweet chestnut which made our saws and chains absolutely black! Like the oak tannin reaction?

[TreeswingerPerth]

Looks like no lubrication for sure , have you tested it with another bar/chain , I had a fauly oregon bar a few years back that the oil holes on it were slightly out of line .

TS .

[C.J]

Has the bar been assembled with the wrong nose sprocket ?

[stoxs]

I would say if it isnt oiling properlly on a bar that length it would seize first, yes chain slack is a sign of over heating.

More often get burning where you have been cutting not on the tip like that.

 

is the chain and bar the right match? boxes might be right but the contents might be wrong.

 

take it back to where you got it from saw as well and see what they say!

keep us posted though

[C.J]

I would say if it isnt oiling properlly on a bar that length it would seize first, yes chain slack is a sign of over heating.

More often get burning where you have been cutting not on the tip like that.

 

is the chain and bar the right match? boxes might be right but the contents might be wrong.

 

take it back to where you got it from saw as well and see what they say!

keep us posted though

 

Exactly - The chain tie straps have been rubbing on the nose of the bar.

[gensetsteve]

Our processor used normal chain oil. Then I put bio in. What a mess it all turns to snot. Had to steam clean the tank and oiler system. I have noticed bio goes a bit thick after a few months left in saw. I would stick to mineral if you can especially if you dont use the saw most days.