Ms 391 pulls to the right

[Jungleman]

Saw is 5 years old and the oroginal 24" bar was pretty beat up so I got a new one since I was told it was cutting to the right, a real C cut.
Haven't really used that saw in a while and everyone seems to be filing it different so yes, the chain is not in good shape. Different cutter lengths, different angles.

I used it for a couple hours this morning till I lost my patience with the C curve and ditched it for another saw which cuts straight.

My question is this. 3 years ago I used this 391 to flush cut stumps for about 2 weeks. Ever since then I've noticed the springs didnt seem to be as strong or rigid as before. So today even when I was trying to cut straight the handle and the saw itself just wasnt rigid. I try to keep the saw straight but I just end up moving the handle and the saw and bar do their own thing.

Could these springs be part of the problem?
Open to advice. Thanks.

 

[Wood Doctor]

I will bet that the right-side rail on the bar is higher than the left. This could have been caused by the stump cutting that caused the left bar rail to drop below the right. So, you need to redress the bar and even the rails out.

 

[mark_kershner]

Imo. Chain needs professionally sharpened and rakers dressed (or) Put on a new chain and see if that takes the “c” out of cutting.


Sent from my iPhone using Tapatalk

 

[huskyboy]

If a new chain doesn’t fix it the bar groove is worn out. This is assuming you already checked to see if the bar was bent. Invest in a bar rail squeezer. A must have tool if you are a firewood cutter, logger/tree guy or even a serious hobbyist. I use mine all the time. I check my bars with the gauge measuring tool and by feel giving the chain a wiggle in the groove. If it’s excessive I tighten them when needed. I noticed that if your not oiling the bar adequately you will wear it out faster. Which isn’t exactly rocket science to figure out. Lol

 

[5000+]

Check your tire presures.

 

[Jungleman]

Yes I’ll be getting a new chain so that should fix the problem.
It has to be the chain because I had put the brand new bar on and it still curved.
I was more curious about those springs being part of the issue.

I looked up a bar dresser and rail squeezer. Looks like I got a couple more tools to buy. I’ve always used a flat file to dress my bars.

 

[Wood Doctor]

I new chain on a bar with uneven rails will still pull. Dress the bar so that the rails are the same height before you install the new chain. That's my recommendation. Good luck!