The chain will not tighten on my chainsaw, I think the tension screw isn't gripping the threaded grubscrew. Help please.
Remove the cover and look to see if the tab is broken off
SOURCE: what is the fuel oil mixture for stihl ms660 chainsaw
hello sir, the gas / oil ratio is, 3/4 o/z per quart or 2.6 o/z per gallon of two cycle oil, any two cycle oil will do,this is how i mix mine and never had a problem,it is a good mix.hope this helps,don't forget the 4 thumbs up,any comments welcome,thank you. ~~
The side plate on most chainsaws will be held on by two nuts. Loosen the blade adjustment screw (a pin that is usually driven by a screw and pushes the blade out from the chainsaw to keep the chain tension tight).
The old chain is ready to be removed now that the sprocket plate is off of the saw. Pull the nose of the chainsaw's bar away from the chainsaw to release it from the tensioner.
Remove the old chainsaw chain.
The chain will easily remove from the guide bar with all that slack in it. Note the orientation of the cutting edges of the chain so you put the new one on the same way.
Pull the drive links out of the guide bar and slip the other end of the chain around the clutch drum.
Carefully thread your new or recently sharpened chainsaw chain around the chainsaw's clutch drum, making sure that the drive links engage in the sprocket.
Thread the rest of the drive links into the guide bar and around its nose, making sure all links are in the guide bar slot.
With the chain properly threaded along the clutch drum and guide bar, put some tension into it by pulling on the nose of the guide bar away from the chainsaw.
While pulling the guide bar, make sure to seat it onto the saw's adjustment pin.
The side plate is ready to go back on as long as the guide bar is properly positioned beneath.
Replace the plate and the nuts that hold it into position, but do not tighten the nuts down all the way yet. The guide bar must be allowed to move a little while the chain is tightened to the correct tension.
The chainsaw chain replacement is now complete.
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I removed the cover and there's a brass grubscrew with a plastic base.
If I push the grub screw towards the base it tightens, but after a few turns, it seems to become totally slack again. I don't know about any tab, there isn't a tab I can see, do you have any more details that might help? Thanks
take off the side cover and look for damage
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