Sharpening The Blades - EMAK AC92-18 Manual De Usuario

Always completely replace both blades and use new M16 lock nuts for attachment. This will
ensure that the mowing deck is balanced and that the blades are securely attached. Proceed as follows:
 Turn off the engine and take the key out of the ignition.
 Secure the machine against movement.
 Elevate the mowing deck to the transport position.
 Open the metal cover on the right side of the mowing
deck chamber.
 Screw out the M16 lock nut.
 Take off the fasting bolt, O-ring and blade.
Install a new or sharpened blade proceeding in the
reverse sequence.
 Use new, unused M16 lock nuts.
 Before replacing the second blade turn the blade holder
with your hand by 180°.
Replace the second
procedure as for the replacement of the first blade.
When reinstalling the blades, ensure that they are correctly
fastened and secured in place!

 SHARPENING THE BLADES

The mowing blades must be sharp, statically balanced and straight. Blunt, incorrectly sharpened or
damaged mowing blades cause grass to be torn out of the ground, damage to lawns and mediocre
collection of mowed grass in the grass catcher.
If the blades are merely blunt and do not exhibit any other damage, then they may be sharpened. After
sharpening the pair of blades must be balanced. Balancing will prevent vibrations of the mowing deck.
The weight difference between the individual blades may not exceed 2g. During replacement
always also check the wear on the distance sleeves and mounting bolts, ensuring they are in perfect
condition. If serious damage to the mowing deck is discovered it is necessary to have the machine
thoroughly inspected at an authorised service centre.
Always use a new, unused M16 lock nut. Never reuse a lock nut that has already
been used, because safe attachment of the blade cannot be guaranteed!
Do not repair a blade that is deformed or otherwise damaged, replace it
immediately.
Whenever handling the mowing blades, always use heavy-duty work gloves.
Sharpening procedure:
 Turn off the engine and take the key out of the ignition.
 Secure the machine against movement.
 Elevate the mowing deck to the transport position.
 Open the metal cover on the right side of the mowing
deck chamber.
 Screw out the M16 lock nut.
 Take off the fasting bolt, distance sleeve and blade.
 Remove the second blade in the same way as the first.
 Clean both blades.
 First sharpen with a grinder and then with a file.
Do not sharpen directly on the mowing deck.
blade following the same
37
+
70 10 Nm
+
275 25 Nm