Mcculloch trimmac 250sl the spool at the end of the grass trimmer does not spin although everything else works fine. I think it's the angle gear that's broken but I don't know how to get to it. Any help would be much appreciated.

Comes out the other end

is the drive cable between the engine and the head broken?

The steps for replacing line in a single line trimmer head are virtually the same for many trimmer head types, like double line trimmer heads.
1. Remove the Trimmer Head Spool
Removing the spool is the first step in replacing trimmer line in any conventional trimmer head, but trimmer head spools can disassemble in different ways.
The trimmer head pictured above and below disassembles by simply unscrewing the knob around its arbor bolt. Other trimmer heads can use press tab and other twisting styles for disassembly.
2. Insert Trimmer Line and Wind the Line
Single line trimmer heads have just one channel in their spools for winding line. The channel will have a hole in it somewhere that keeps the line in place as it is wound around the spool. Insert one end of the trimmer line in the hole.
Depending on the trimmer head, it might be helpful to bend a small portion of the cutting line at an angle before inserting it in the starter hole. Also, cutting the line at an angle can help this first step on some trimmer heads.
Of course, it is also important to make sure that the replacement line matches the diameter specification of the trimmer head before beginning. Once the line is started correctly in the channel hole, you're ready to wind. Most trimmer heads will indicated the correct winding direction right on the spool somewhere.
It's also important to wind the line carefully, keeping it in neat rows as much as possible. The line will have a much higher chance to feed incorrectly during trimmer use if it suffers from sloppy winding.
3. Snap the Line into its Retaining Notch
A conventional trimmer head will have a retainer on its spool. Snap the end of the trimmer line into the retainer after it is wound around the spool. The retainer will hold the line in place as the spool is replaced in the trimmer head assembly.
4. Replace the Trimmer Head Spool
With the cutting line held in place, the spool is ready to be replaced in the trimmer head assembly.
First feed the extra trimmer line through the trimmer head eyelet. Make sure to release the line from the retainer before completely securing the spool into position.
Replace any knobs, bolts, or other trimmer head pieces removed during disassembly.
Your single line trimmer line is now reloaded, and your trimmer should be ready to get back to work.
Although there are many steps to reloading line the conventional way, a little practice and familiarity with your trimmer will speed the process up a great deal. Once you're up to speed, reloading trimmer line this way can take less than five minutes.
If you want to know about the double line replacement, please click this
Thanks.

What is the gas mixture for a mcMulloch trimmac please .
As im not good at doing this please

If the noise was up by the handle it may have been the drive pulley breaking loose of the shaft on the motor causing the motor to spin and stop the flex shaft of the trimmer. Another possibility would be the small belt that aids the flex shaft. If those don't fix the problem check the lock nut that bolts the flex shaft to the spool housing. If the shaft broke free from the housing the motor would still run and the shaft would turn, but the spool housing would not spin if it does it could be stopped very easily. Definately check the warranty.

This unit is supposedly the same as the GH700 drive system. There is a 5:1 plastic reduction gear inside the housing driven by a steel gear from the motor. It easily strips, melts, or simply breaks. The part is difficult to find. I have not found one yet for my situation.

Either lawn material is binding the head to the base or the reduction gear is broken, stripped, or melted. The motor's steel gear or belt drives the plastic gear which drive the spool. If claning doesn't help, then there is no user repair. The parts are generally not consumer available.

This is for a MCCULLOCH TRIMMAC 210, 21CC (petrol/gas Line Trimmer).

http://safemanuals.com/user-guide-instructions-owner-manual/MCCULLOCH/TRIMMAC%20210-%2021CC-_E

Operation of this and other Line Trimmers are all the same with some exceptions with optional attachments.

Cut two separate pieces of string, about 7 ft. each.

Stick the end of the line in the hole on the inside of spool.

Wind clockwise onto spool, putting the line that is closest to the ground on first.

Once you have winded this piece on, lock the last 4 inches of line through the slits on spool.

Repeat process for second piece of line, locking the last 4 inches in slot opposite the other locked in piece.

Put the spool on the trimmer, feeding the end of lines through either hole on trimmer.

Before you push the spool all the way on, pull the strings out of the locked position.

Jim

hgffggkgjgjgbTry taping the bottom on a hard surface;HARD!;;;;;;;bjjjjjjkjjjjm4454541joojojojlj That did the trick for me for some reason it doesn't grab and it gets lose were it won't spin fast bearly cutting a blade of grass.