Replacing a reel head.

multiple failures with bump advance string trimmers - GardenWeb

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Jul 5, 2008 - I have indeed hurled my own ryobi across the yard in a fit. ... Some heads are not designed for curved shaft trimmers or on engines under a .... the fence so thestring won't wrap around the fence instead of whipping in and out.

Once you have the string wound onto the spool, place the spool onto the shaft and pull the strings out of the slots so that the string feeds through the holes without going through the slots. Good luck...Lee

The line on my new 26cc Homelite would also feed out by itself. That started me thinking the line was wound backwards. I wrapped the line in the opposite direction as was shown on the bump feed reel and now the dang thing works although the bump feed needs to be "bumped" pretty hard to work. Is it possible that the reel was manufactured with the (string direction) arrows pointing the wrong direction? The new 26cc unit is also underpowered compared to my older 25cc trimmer.

The shaft cable has either come loose at the head, or is broken at the engine most likely. Is this a 2 piece unit? If so, see if the cable turns with the grass trimmer section removed. If so, it is usually easiest to just replace the trimmer shaft section. One piece units require disassembly at the engine, and if you are not mechanically inclined, that can be a pain.

Grasp the outer portion of the cutting head in your left hand and turn the inner knob with your right. Depending on model, some bump knobs are threaded and some are post and notch. Use a little spray like wd40 to loosen the mechanism. It may take a firm hand, but the two will separate so that you can reload the line. Consider reloading with the .095 five sided line. It cuts much easier than the round line.

You can buy new Line to re-spool on your existing head

There is a nut above the head, place a wrench on the nut then unscrew the head from the shaft, unless yours is different from mine this is how it works. I hope this helps.

what model is trimmer? cs30? if you found the line on it clockwise, that's your problem. on the cs30 it rotates counterclockwise if youre looking at the head while trimmer is upside down. the line has to be wound opposite direction or your going to have a MESS of string in the head.

Genarally the size of line for that size of line trimmer is 2.0mm

To install string in the Ryobi you do not have to disassemble anything: Line up the two arrows on the inner and outer reel, remove any excess string, cut two pieces of string about 10 feet, feed line in the side holes, secure line in hole where it comes out the bottom (it only takes about 1/4in. to do so), pull strings tight, then turn the inner reel counter clockwise to wind it. If it sticks a little just pull line a little.
To remove the inner spool in order to remove line that has broken inside, to clean the mechanism, or to perform other maintenance, grasp the outer reel and unscrew the bump knob counter-clockwise. Mine is often very tight and requires pliers to get enough leverage. While you are in there, clean the inner reel and the inside of the outer reel to improve feed performance. The shaft rarely needs cleaning. Do not lubricate. After re-installing the reel, add string (0.080") as described above.