|
|
Post by henrylynn on Feb 20, 2021 18:11:23 GMT -5
I have a 1986 model Super XL that I have recently rehabbed and put back into action. The saw runs great but it still has an annoying problem that I've never fixed. In use (especially in hardwood) it looses chain tension after about 30 min of cutting no matter how tight I torque the 2 bar nuts and no matter the age of the chain. Is this just the way these saws are or is something worn that can be replaced?
|
|
|
|
Post by tangobravo on Feb 20, 2021 19:14:28 GMT -5
The chains tend to loosen as the chain and bar heat up in use. Homelite mentions it in their operations manuals. It is an annoying, but characteristic property of saws. The hard tip bars may be more prone to this than roller tip bars.
I believe you can get away cold tensioning a roller tip bar a bit tighter, helping some with heat expansion.
|
|
|
|
Post by henrylynn on Feb 21, 2021 9:14:34 GMT -5
So, the problem is more likely heat caused expansion of the chain and bar more than the bar nuts loosening due to heat and vibration?
|
|
|
|
Post by undee70ss on Feb 21, 2021 9:16:23 GMT -5
So, the problem is more likely heat caused expansion of the chain and bar more than the bar nuts loosening due to heat and vibration? Yes!!!! |
|
|
|
Post by tangobravo on Feb 21, 2021 12:23:00 GMT -5
Yep- Keep your scrench at the ready. There is a reason people carry one with their chainsaw all the time!  And it will tighten back up some as it cools later- |
|
|
|
Post by sparky on Feb 21, 2021 13:38:07 GMT -5
Also keep dirt out of the bar nut threads. Sawdust and oil will effect torque if the nuts are dirty.
|
|
|
|
Post by edju1958 on Feb 21, 2021 16:55:34 GMT -5
Yeah,it's a bad thing to have dirty nuts.(on your saw,get your minds out of the gutter,Lol)
|
|
