24
English
Air filter
Check the air filter cleanliness from time to time or at least at each oil change.
For a good operation of the engine the air filter must be always clean. Clogged filters due to insufficient
cleaning may cause serious problems to the engine operation, such as the loss of power, damages to the
cylinder, piston and rings.
Air filter cleaning procedures:
Air filter - foam model
1 -
Wash the filter with water and detergent, removing all the dirt.
2 -
Dry it, using a clean towel and pressing.
3 -
Slightly whet the whole air filter with clean oil (20W50).
Air filter – paper model
1 -
Clean with compressed air from the inside to the outside of the filter or beat its base smoothly against a flat
surface.
Maintenance chart
blade
To remove the blade and make the required repairs, fit the wrench or box end wrench into the fastening screw
and turn it counterclockwise, [Fig. 29, Pag. 13].
If the blade makes contact with an obstacle, it should be removed and carefully inspected. If required, change it
for a new one. In case of a strange noise in the engine, take the lawn mower to a specialized Technical Assistance
service.
To check the blade balance, pass a rod through the middle hole in order to achieve the smallest possible clearance.
Rest the rod ends on two supporting and leveled points: if the blade is imbalanced, the heavier side will slant.
To balance both sides, pass the heavier side on the portion opposite to the cutting edge on a grindstone or file
and recheck the balance, [Fig. 30, Pag. 13].
When reassembling the parts, check for their proper position and ensure the blade holes fit the blade bracket
projections, [Fig. 31, Pag. 13].
Avoid the accumulation of lawn under the mower.
After use, clean the lawn mower with a brush or with a wet cloth. Never pour water onto the lawn mower.
Guidelines for Waste Disposal
Incorrect disposal of oil, grease, and petrol may cause serious harm to the environment such as soil and
water contamination. This is why these materials should be stored in adequate containers and taken to
OPERATING
BEFORE
EACh USE
FIRST 5
hOURS
hOURS OF USE
25 h
50 h
100 h
Change oil
X
X
Check oil level
X
Clean air filter
X
Change air filter
X
Clean spark plugs
X
Clean combustion chamber
X
Clean carburetor and tank
X
Adjust discharge and admission valve
X
