Komatsu WA270-3H Operation & Maintenance Manual page 111

Wheel loader
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4.
To prevent the bucket from digging in too deep into the material to
be removed, you must lift the boom while driving into the material.
Lifting the boom ensures a sufficient thrust force.
5.
Tip the bucket in.
NOTE
If the edge of the bucket is moved up and down during driving/
digging into the material to be removed, it can result in the front
wheels being lifted from the ground, thus causing the wheels to
skid.
6.
If there is too much material inside the bucket, you must briefly tip
it in, dump it and lower it in order to reduce the load and to prevent
that you lose the load during the transport.
Excavating on Level Ground
When excavating and loading on level ground, make sure that the bucket
is not overloaded on one side, since the balance of the machine may be
impaired.
Perform this type of operation in the 1st gear.
1.
Bend the bucket edge slightly down.
2.
While driving forward, move slightly the control lever of the boom
in order to remove only a thin layer of the surface of the soil to be
removed.
3.
Move the control lever of the boom slightly up and down to reduce
the resistance during driving forward.
While excavating, ensure that the digging force is not applied only
on one side of the bucket.
Operation
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