I found it easier to remove the rake drum before changing the tines on this model .
To do this, you have to take the circlip off holding the wheel on and slide the wheel shaft out, take off the belt cover (2× screws and 1x machine screw into motor) and slip off the belt.
Then there are 2x screws holding down each bearing carrier at either end of the drum.
The drum should lift out.
Tap out one of the roll pins ( i took out the non-drive end) there is no requirement to remove the bearing.
You should now be able to slide each disc on the drum apart enough to replace the tines. I found it easier to slide all the discs to the end you took the pin out of - before starting, and start replacing from the other end.
If you don't you'll have to slide the whole disc/drum back afterwards as a unit, and that is much harder.
Once all the tines are exchanged, and all the discs on the drum are closed up you need to replace the roll pin, i found it easier to use two large clamps and gently squeeze the discs together allowing clearance for the roll pin.
Then it is simply a case of reversing your previous actions to rebuild.
Changing the tines is probably the most time consuming part, but it shouldn't take you more than 1.5 hours total, for the whole process.
Tools needed:
Small tipped circlip pliers.
Phillips screwdriver.
Hammer and parallel pin punch.
2x large clamps (if you have them).
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