Chain coming off

[Silverhooker]

Sounds like someone has “borrowed” it and may not have told you and bent the bar. A bent bar will throw chains off, it’s happened to me more than once.

[Khriss]

On 22/07/2020 at 22:19, Stere said:

Found that cutting whippy blackthorn scrub throws chains.

....well don't cut whippy blackthorn scrub with it then ?  ( get someone else to do it- it's a right arse  ? )  K

[topchippyles]

2 hours ago, Khriss said:

....well don't cut whippy blackthorn scrub with it then ?  ( get someone else to do it- it's a right arse  ? )  K

K i love you and stubbys replies ??The shit they spout on here does put ones humour at times. Those jocks take some getting used to ?

Edited August 14, 2020 by topchippyles

[Steve Bullman]

On 22/07/2020 at 20:12, spudulike said:

Is this on the first outing? No one has bent the bar on a previous outing have they?

Other than that, make sure the chain, bar and sprocket match - gauge, pitch and drive links.

Make sure that when you tighten the chain and do up the bar nut that the end of the bar is pushed upwards or you are griping the top of the chain and pulling upwards so the bar is pre-tensioned - amazed how many aren't aware of this simple technique and their chains keep going slack!

Spoke to a lot of guys straight out of nptc courses that weren’t even taught that!

[TuscanPhil]

So when tensioning the chain, hold the bar up, then tension the chain so it sits snug(?) to the bar, then tighten the bar clamp nut (or nuts)?  Or what's the best procedure?

[Khriss]

7 minutes ago, TuscanPhil said:

So when tensioning the chain, hold the bar up, then tension the chain so it sits snug(?) to the bar, then tighten the bar clamp nut (or nuts)?  Or what's the best procedure?

...... Send it to @spudulike fr porting, itll come back fine mate. K

[Stubby]

2 minutes ago, TuscanPhil said:

So when tensioning the chain, hold the bar up, then tension the chain so it sits snug(?) to the bar, then tighten the bar clamp nut (or nuts)?  Or what's the best procedure?

First get rid of the bent bar .  Tighten the bar nuts by hand / or scrench just so it grips the bar but not so tight as the bar cant be moved up . Hold saw by the back handle and " drop " the tip of the bar on a log or similar . Now the bar will be pushed up . . With your free hand check the tension with it in this position ( pull the chain up and just be able to stat to see the drivers )  . If this is ok , with the tip still on the log tighten the bar nuts till they grip the bar enough that nothing else will influence its position then tighte finally . 

[Khriss]

( @Stubby   i know,  i should calm it down a bit) 

Edited August 14, 2020 by Khriss
( are you on short measures ? not one spelling mistake ! )

[peatff]

Only time my chain has come off was when I couldn't be arsed to stop and tighten it back up, how bent is the bar ?