Allen Engineering Corporation HD 550, Operations Manual And Parts Book, Page: 9 / 34

1.3 Service Safety
Poorly maintained equipment can become a safety hazard! In order for the equipment to operate safely and
properly over a long period of time, periodic maintenance and occasional repairs are necessary.
DO NOT attempt to clean or service machine while it is running. Rotating parts can cause severe injury.
DO NOT use gasoline or other types of fuels or flammable solvents to clean parts especially in
enclosed areas. Fumes from fuels and solvents can become explosive and can be hazardous to
your health.
ALWAYS operate machine with all safety devices and guards in place and in working order.
ALWAYS keep area around muffler free of debris such as leaves, paper, cartons, etc. A hot muffler could
ignite such items starting a fire.
ALWAYS replace worn or damaged components with spare parts designed and recommended by ALLEN
ENGINEERING.
ALWAYS remove key and disconnect battery on machines before servicing to avoid accidental start-up.
1.4 Dimensions
OPERATOR’S
RIGHT HAND
OPERATOR’S
LEFT HAND
66”
1676 mm
144”
3658 mm
62”
1575 mm
1A
OPERATIONS
1A-7