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Kombi driveshaft bush replacement


HDAV
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Recently got a second powerhead for my kombi a 4mix km90 and the drive shaft drops out, now it’s not a new machine by any stretch but in good running order apart from the drive shaft so I ordered a new plastic bush for £3 and set about replacing it..... Stihl sell the whole driveshaft with the plastic bushing already fitted for £35 but the shaft looks fine just the plastic worn...

 

How does no 5 fit onto no 2?

D59E5B89-0379-4081-BBA9-B517C7A37193.jpeg

Edited by HDAV
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The aluminium collar number 6 will need to be removed to fit the plastic sleeve.   It's just a press fit on to a raised spline on the shaft.  Take care removing and refitting the collar, if you ruff it up it'll ware through the sleeve again.

 

If the either or both of the two wire bows are broken then you'd be better off replacing the shaft anyway.  On the other hand, if the bows have fallen out fit some new ones, which are available as a spare part.

 

And as the actress said to the bishop,  Slap some grease on your shaft before inserting.  ;)

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Well it’s done it is. Push fit and very tight.... found an American forum suggested  heating it up, noticed some marks where it had previously been in a vice....

 

 so I put it the the worlds smallest vice and warmed it up...... eventually it came off...neeeded a bit more heat to get it back on....

 

seems mad there isn’t something holding the other end but I guess as long as you don’t run it without and attached tool it’s fine ......

 

plastic end is replaced that was all that was wrong with it I ordered a valve gasket kit and feeler gauge but valves were spot on. 

 

Shame I cut the hedge I was going to use it on at the weekend and it was still in bits.....

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