Adjusting The Bottom (Fixed) Blade; Adjusting The Cutting Height; Adjusting The Delivery Plate; Adjusting The Chain - The Handy THHMR Operators Manual And Parts Lists

12” hand push roller mower
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ADJUSTING THE BOTTOM (FIXED) BLADE

This operation needs to be done whilst carefully turning the cylinder blade.
We recommend the use of gloves.
The bottom fixed blade must be set correctly in order for the lawnmower to
work efficiently. Using the spanner supplied, slacken off the two top nuts on
each side of the side casing. Carefully tighten the two adjusting knobs (A)
by turning them slowly in a clockwise direction.
When the cylinder blade just makes contact with the bottom blade,
turn the knobs slightly in an anti-clockwise direction until the cylinder
blade turns without touching the bottom blade. Tighten up the nuts on
the side casing.

ADJUSTING THE CUTTING HEIGHT

The mower can be set at to cut at any height betweeen 13mm and 23.5mm.
Adjust the height of cut by loosening the two knobs on the side of the
cutting height roller and moving the roller up and down to the required height.
Remember to adjust both sides of the roller equally otherwise the
lawnmower will not give an even cutting finish.

ADJUSTING THE DELIVERY PLATE

If the grass is not being thrown into the bag satisfactorily, then the delivery plate
can be adjusted.
Slacken the two screws (A)
Underneath this cover you will see the delivery plate with projections at
either side. Move these projections backwards or forwards until better results
are achieved. The delivery plate must not touch the cutting cylinder.
Re-tighten the screws on the cover.

ADJUSTING THE CHAIN

To achieve the correct chain tension, first remove the chain case cover.
Slacken the nut (A) which holds the chain skate – you will need a 13mm
spanner.
Lift the mower clear of the ground and rotate the rear roller clockwise one
complete revolution. Note at what point the chain causes the chain
skate/tensioner (B) to rise to its peak and, at the point, retighten the nut.
Page 6

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