Komatsu GD555-5 Operation & Maintenance Manual page 207

OPERATION
PRECAUTIONS WHEN INSTALLING FRONT BLADE
Machine equipped with front blade has a blind spot in front of tire due to interruption by blade. Operate the machine carefully.
Confirm that there are no person and other obstacles around the machine before starting.
Sound the horn to warn the people around before starting.
While traveling, keep the front blade at most raised position.
If the machine travels with front blade close to the ground, it may hit rocks in the ground and may be damaged.
Front blade is not equipped with safety device for heavy load.
If a heavy shock or excessive load is given to front blade, it may damage not only the front blade but also other parts of the
machine.
When using front blade, take care about the followings.
Use the front blade mainly for the leveling work.
Do not scrape hard soil, compressed snow or ice, because it may damage the front blade or other parts of the
machine.
Even when scraping soft soil, avoid offset load work.
Do not turn during operating front blade.
In case turning the machine is necessary due to avoidable reasons, raise the front blade to reduce the load, then
operate the steering wheel.
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WARNING
CAUTION
OPERATION