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Mountfield 420 - Operating and Maintaining the Lawnmower; Grass Cutting Techniques; Routine Maintenance Procedures

Mountfield 420
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GRASS CUTTING
3
3
ROUTINE MAINTENANCE
4
4
1
2
3
1
2
1
32
1
Lift the stone-deflector and cor-
rectly attach the grass-catcher
(2) as shown in the drawing.
To start the engine, follow the instructions in the engine booklet and
then pull the blade brake lever (1) towards the handle and give a
sharp pull on the starter cable knob (2).
For models with an electric starter, turn the starter key (3).
The lawn’s appearance will be improved if
it is always cut to the same height and is
cut in alternate directions.
Should you have any doubts or problems, do not hesitate to contact
the nearest Service Centre or your Sales outlet.
After work has been
carried out on the
blade, reassemble as
shown in the drawing,
tightening the central
screw to 3,5 - 4 kgm.
IMPORTANT – Regular, careful maintenance is essential for keeping the
safety level and original performance of the machine unchanged in time.
1) Wear strong working gloves during any cleaning, maintenance or adjustment
operation on the machine.
2) Carefully clean the machines with water after each cut; remove the grass
debris and mud accumulated inside the chassis to avoid their drying and
thus making the next start-up difficult.
3) The paintwork on the inside of the chassis may peel off in time due to the
abrasive action of the cut grass; in this case, intervene promptly by touching
up the paintwork using a rustproof paint to prevent the formation of rust that
would lead to corrosion of the metal.
4) Should it be necessary to access the lower part, only tilt the machine from
the side shown in the engine handbook; following the relative instructions.
Check the oil level and
top up as per the
instructions in the
engine handbook.
Oil the pins and the
joints of the wheels.
34,5 ÷ 35,5 mm
1
1
6 mm
2
3
4
Once cutting is finished, release the brake lever (1) and
disconnect the spark plug cap (2).
Remove the starter key (3) (where fitted).
WAIT FOR THE BLADE TO STOP before carrying out any
type of work on the machine.
By turning the nut (1), adjust the belt’s tension to obtain the
measurement shown (6 mm).
• For models equipped with the spring, regulate the adjuster (2)
to obtain the best length of the spring (with the clutch
engaged), which is 51-52 mm.
• For models without the spring, regulate the adjuster (2) so that
the cable (3) is slightly loose, with the lever (4) at rest.

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