Chainsaw Chain Keeps Coming Loose I bought a brand new husky saw 235 and the chain keeps coming loose its about an inch under the bar after bucks up 3-5 logs in a row, the oiler is working but im not sure if it giving all its got, i cant seem to find anything wrong with it. all cleaned no stripped threads.

Tighten the adjusting screw with the two nuts loose but snugon the middle of the chain on the top of the bar. Tighten the chain screw until the chain is loose enough to raise the chain up about 1/2 inch then tighten the mounting nuts tight. Then see if it is ok.
Terry

You may have a bent bar, or you could be putting the chain on a little too loose. Perhaps the chain is not getting lube ?
Possible that the chain tentssioner and or adjustment is loosening up as you are using the unit. Other than that maybe a defective new blade ?

The only time I saw this was when the saw was run with the chain too loose. The chain should be snug al the way around the bar. If it is run loose for too long the chain will develop burs on the driver links. Now the driver link will not fit in the groove on the bar so the chain is tossed off. Replace with a new chain

I put a new bar and chain on my craftsman 18" chainsaw because the chain keeps coming loose. I am still having the same problem, after running 10 seconds, the chain falls off.

Hi luvmylife63.
If you have the proper tension on the chain against the bar and the chain is coming loose right away then you need to replace your chain and/or the bar for your chainsaw.
Please take time to rate me

After you tension chain on bar are you making sure that bar retaing nuts are tight enough. On my saws I go to where nuts are very snug then go about 1/4 turn further. If your saw is new and you have the manual it will give you better instructions on how to adjust bar oil flow better than I can. Also if this does not solve your problem i would advise you return it to place of purchase for repair or replacement. Thank

2 options:
Change for a new chain - the chain is too stretching
Put a pressure ring on the adjusting screw - to help tighten the chain

Your chain is too loose or it is worn out. Adjust the tension on the chain. The chain should not hang away from the bar but should be loose enough that you can pull it away from the bar with not much effort. Adjust the tension until it is set correctly.

The most likely cause is a loose chain.
Chain Adjustment

1. Make sure the chain brake is off (gloves will protest your fingers).
2. If necessary, loosen the bar nuts that are clamping the clutch cover in place (or whatever holds the clutch cover and bar on). They do not need these really loose - finger tight will do.
3. Ease the tension adjustment until the chain is obviously loose.
4. Using one hand, hold the nose of the bar up.
5. While holding the nose up, adjust the tensioner so that the center of the chain just touches the underside of the bar, add a touch more.
6. Continue holding the nose of the bar up & tighten up the bar nuts / bolts / quick-release system.

HTH
Lou

Good luck with MTD. They buy assets (various companies) but leave the liabilities (warranty) in the dust. As you should know, all those details are discussed in the agreements between the companies. If you really want to know and the both companies are publically traded, you could find the answer by reading all the small print public companies are required to disclose to share holders. Forget a legal remedy.

Is your bar (the thing the chain rides on) properly adjusted? When it is properly adjusted, the chain should ride freely on the bar but not hang away from the bar at any place. If you pull up on the chain, when you let go it should snap sharply back into the bar. Yet, it should move freely when you grab it with your GLOVED fingers.

Never work on a chain saw if the saw is (1) plugged in (2) the spark plug is connected. Chain saws don't care at all what they cut!

Let me know if this works for you

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