YLee Kioti
Platinum Member
It's unlikely that failing to grease the tip caused the nose sprocket to lock up. Many top quality bars come without the hole to grease that sprocket, and may bars that do have the whole are run regularly by pros who never grease that hole. The two most likely causes of a faile tip are pinching the tip of the bar (often while limbing) or running your chain tension too tight.
Oh it got hot ( cut down 37 tree stumps ) and seized up while cutting. I could see the chain dancing and leave a gap when it looked like it would jump off the bar. This was a gas and go day non stop. some were hackberry, oak and pecan stumps; diameters about 6 to 12".
Used flat tip of bar tool and ratchet for a hammer to get it to even rotate. Once free it was very stiff. Pumped it with grease until it oozed out and picked up by chain.
After that, every time I touched up the chain and give it a few licks, the tip wheel gets a squirt as well.
Some previous owner planted over 40 trees along the fence line right under the city power lines. All cleaned up now, heh been heck of a summer. 100+* the whole summer and worked it all but between hours of 2-5pm where the UV index would at times hit 13.
That chain saw got used like a rented mule.