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MOWER MAINTENANCE
Lubrication
Lubricate the wheels, pivot points and linkages with
engine oil every 25 operating hours.
Apply a good quality medium grease to the inner control
cables at the point of entry and exit from their outer cas-
ing.
Cutterblade Removal
To prevent accidents never work on the cutterblade
unless the spark plug lead has been removed. The
cutterblade has sharp edges. ALWAYS wear strong
gloves to protect your hands when working on the
cutterblade. DO NOT rotate tools towards the cutting
edges to avoid the risk of injury should the tool slip.
ALWAYS use genuine Hayter replacement parts.
Drain the fuel by running the engine until the fuel tank
is empty and the engine stops. Remove the spark plug
lead and allow the engine to cool. Turn the mower on
its left hand side (Code 493) or right hand side (Code
563) and ensure that the air cleaner side of the engine is
uppermost. (Refer g.37)
Remove the two socket head screws (1), and Former
BBC blade (2) and plate clamp BBC (3). (Refer g.38)
The condition of the cutterblade and its mounting
arrangement should be checked regularly for signs of
wear or damage. Ensure that the cutterblade is not bent
Fig. 37
Fig. 38
Cutterblade
1
or cracked.
A damaged cutterblade that is out of balance will vibrate
excessively and may break. DO NOT use an unbalanced
cutterblade.
Regularly check that the bolt securing the cutterblade is
tightened to the speci ed torque of 55Nm.
Replace the cutterblade every 2 years of sooner if
excessively worn or damaged.
To prevent injury it is wise to seek assistance when
turning the mower on its side.
Cutterblade Assembly
Assemble the two socket head screws (1), Former BBC
blade (2) and Plate clamp BBC (3). Tighten to a torque of
55Nm. (Refer g. 38)
Cutterblade Sharpening
A slightly worn cutterblade may be re-sharpened. Both
blade edges must be sharpened equally to ensure balance.
Sharpen the cutterblade every 25 mowing hours or more
frequently if conditions require. Remove the cutterblade
from the mower and clean using a brush and water.
Inspect the cutterblade for signs of damage.
Sharpen both cutting edges with a at le to restore per-
formance. (Refer g.39)
Fig. 39
2
3
Ensure that the cutterblade is balanced. Use a screw driv-
er with a round shaft to support the cutterblade through
its centre hole. Hold the cutterblade horizontal and then
release. A balanced cutterblade will remain horizontal.
(Refer g.40)
If the cutterblade is not balanced the heavy end will
rotate downwards. Sharpen the heavy end until the
cutterblade is correctly balanced. (Refer g.41)
Fig. 40
30-45
14
Fig. 41
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