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To adjust the chain:
1. Loosen the axle
2. Loosen the brake anchor (this is attached with the small bolt in the long slot on the left side of the rear fork)
3. Tighten the tension adjusters on the axle 1/8 to 1/4 turn to tension the chain. Tighten both adjusters the exact same amount to maintain the wheel alignment.
Note: this system of adjusters is common to motorcycles and BMX
bicycles so I your are not familiar with it, if you know anyone who is,
they would not have a problem adjusting it for you.
Chain tension: The chain should be "just not-quite snug" in other
words, not taut or sloppy loose. BE CAREFUL NOT TO ADJUST TOO TIGHT. The tensioning system can easily impart too much tension and snap the chain or bend the motor output shaft. Turn the adjusters 1/8 to 1/4 turn at a time and recheck the tension each time.
4. Once the tension is good, tighten the axle and brake anchor bolt. Test run the scooter. Readjust as needed.
Depending on the model, you adjust the chain tension using the screw that is located either between or below the two nuts that hold the sprocket/bar/chain cover. Loosen the nuts and turn the screw clockwise to tighten, counter-clockwise to loosen. Once you have the tension set, lift up on the bar from underneath and tighten the two nuts. Proper tension should show about half of the chain drive, and should only be done when cold. After 4 to 5 minutes of run time, stop the saw and check the tension again. A little heat in the bar/chain will cause it to loosen up. It will need re-adjusting.
There are usually two 7/16" nuts on the side of the chain saw. Loosen those a little first, then turn the screw to tighten the chain - not too tight or you'll stretch out the chain when you use it. Don't forget to re-tighten the two nuts before using the chainsaw.
You need to tighten the chain, and or remove and reinstall the chain depending on whether or not it has come off the drive wheel. The chain drive is on the right hand side of the saw, and there are either two nuts (about 1/2 inch or 13mm) holding the chain on, or there is a little half round handle you can use to tighten the chain after it is on the drive wheel properly. The saws with the two nuts on them have a small flat blade screw on the backside on the bar that you tighten the chain with. And to make things more confusing, some of the newer bars have a round hole in them, that after you loosen the two bolts, you stick a screwdriver in the hole and turn it clockwise to tighten the bar, then you re tighten the 2 nuts.
Since from your description that it wont engage to cut, you will have to remove and reinstall the chain since it is loose from the drive wheel. Clean out all the wood chips, etc in the drive wheel area before you reinstall the chain, make sure it is not on backwards and sharpen and oil it before you use it. Rick
Hi..my name is Keith..i dont know what kind of mower you have..but most models that has a drive chain..to tighten it up..you unloosen the rear axle bolts and pull the rear axel backwards..and then retighten the bolts..but your model may not do that...i hope this helps
Hi bcross92592. You might want to check this website out. www.ducatisuite.com It has step by step instructions on how to adjust your chain amongst other things, and he also has a monster. Hope this helps you.
Hi Sally, I guess you don't have the owners manual. It tells you how to adjust chain tension. If you look around near the motor side of the bar, you should see two nuts that hold a bracket tight against the bar and an adjustment screw or bolt or something to loosen or tighten the chain by moving the bar or making it longer or shorter. Adjust that so that the bar is as short as possible and put the chain back in place. Then tighten that feature till the chain is snug again and tighten the two nuts to hold the bar firmly.