Forest Master Model: FM6DD/FM4DDE
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Maintenance
Engine/Motor Servicing
For the service of the petrol engine (FM6DD) refer to the engine manufacturer’s user
manual. If you need help accessing the manual, contact Forest Master.
Replacing and Sharpening the Blades
To remove the blades for sharpening or replacement you will need an appropriate
socket with no leading taper, as the bolt heads are shallow. If a socket with a leading
taper is used, there is a possibility of rounding the bolt head as the socket will slip.
Undo the bolt at the bottom of the feed hopper and lift the hopper upwards on
the hinge to access the drum. Loosen the bolts holding the blade to the drum and
remove the blade. There are two blade positions on the drum and both blades will
need to be maintained equally.
Note: The blades are reversible so they can be turned around to use the second side
before they need to be re-sharpened.
If the blades are re-sharpened, you will need to adjust the base block at the bottom
of the drum to close the gap between the edge of the block and the knives. The
base block will need to be moved inwards so that there is a gap of around 1/4mm
between the knives and the base block. Make sure the drum rotates freely by moving
it by hand or with a socket using the nut on the outside of the drum.
When refitting the blades, you should use a small amount of mild thread lock to
secure each bolt.
