McCulloch Tm250 strimmer spool head replacement

[David Goss]

I need to brush up on my technical terms

Just thinking that the husky strimmers i have used had the locking hole on the top side of the head, so the opposite side from your photo. Hope you get it sorted

[roycurwen1]

Hi mate is it a left handed thread.Just a thought .ATB

[Pedroski]

I don't think the head is replaceable. I've just had a look at the instruction manual for the TM250, and it seems it is supplied with a wrench but I think that is to hold that nut still so the line spool can be unscrewed. I bet the nut is bonded to the end of the flex drive shaft. You're probably meant to just bin the whole thing when the head is worn - I mean, the whole thing is £80 new and McCulloch/Electrolux probably don't see it as serviceable!

Edited March 7, 2012 by Pedroski

[GardenKit]

The black bit will have an internal hex moulded in the back which fits over an ally boss. The boss has an internal square drive into which the flexi drive shaft fits, and a male thread on the bottom onto which the silver nut fits. Holding the black bit should enable you to undo the RH thread silver nut.

 

But.....

 

The heads often oveheat, and the internal hex in the plastic rounds off, so holding it wont help, it just goes round on the ally boss. there should be a screw in the side of the bent tube which locates in the boss bearing, Remove this and slide the whole boss and bearing off the shaft so you can stick it in the vice, or cut off the plastic to expose the ally hex beneath.

 

Better still, as its a McCulloch, chuck the whole thing in a skip.

[pleasant]

Gardenkit is quite correct.

 

These heads are only spun on hand tight so there is no locking pin hole necessary. It is just very tight and when these heads get very tight you actually either turn the engine over when you try and remove it (non clutched engine) or it simply spins the flexi shaft over and over (clutched system)

 

Remove the alloy tube from the engine end and then you can clamp the square flexi drive in a vice- then simply undo the nut.

 

......or just bin the whole lot and get something decent.