50
Preparing for operation
Changing the chain
wheels
Once you have determined the appropriate combination of sprockets
from the sowing distance table, you can fit these sprockets to the ge-
arbox.
A chain tensioner is tensioned by a spring. The chain tensioner has to
be relieved of tension first. For sprocket “C”, the chain tensioner is lo-
cated on the other side of the gearbox.
> Pull on the spring and detach it from the detent. The chain tensio-
ner is now relieved of tension and the chain can be removed from
the sprockets.
> Remove the split pin from the sprocket that you wish to change
> Remove the chain from the sprocket
> Remove the sprocket
> Remove the desired sprocket from the holder and slot it onto the
gearbox in place of the removed sprocket
> Secure the sprocket with the split pin
> Pull the chain over the sprocket
> Tension the chain tensioner using the spring
> Slot the old sprocket onto the holder
When all sprockets have been fitted to the gearbox correctly:
> Close the guard shroud and secure with the chain
Rear chain
Spring
Detent
Split pin on sprok-
ket “A”
Chain
Bracket
Guard
shroud
Securing
chain
