Bolens BL150 Operator'S Manual Download

Page: 10 / 64

HOLDING THE TRIMMER

Before operating the unit, stand in the operating position
(Fig. 9). Check for the following:

• The operator is wearing eye protection and proper

clothing

• With a slightly-bent right arm, the operator’s right hand

is holding the shaft grip

• The operator’s left arm is straight, the left hand holding

the D-handle

• The unit is at waist level

• The cutting attachment is parallel to the ground and

easily contacts the grass without the need to bend over

WARNING: Always wear eye, hearing, foot and
body protection to reduce the risk of injury
when operating this unit.

NOTE: Do not rest the Bump Head™ on the ground

while the unit is running.

Some line breakage will occur from:

• Entanglement with foreign matter

• Normal line fatigue

• Attempting to cut thick, stalky weeds

• Forcing the line into objects such as walls or fence posts

TIPS FOR BEST TRIMMING RESULTS

• For best trimming results, operate unit at full throttle.

• Keep the cutting attachment parallel to the ground.

• Do not force the cutting attachment. Allow the tip of the

line to do the cutting, especially along walls. Cutting with
more than the tip will reduce cutting efficiency and may
overload the engine.

• Cut grass over 8 inches (200 mm) by working from top to

bottom in small increments to avoid premature line wear
or engine drag.

• Cut from left to right whenever possible. Cutting to the

right improves the unit's cutting efficiency. Clippings are
thrown away from the operator.

• Slowly move the trimmer into and out of the cutting area

at the desired height. Move either in a forward-backward
or side-to-side motion. Cutting shorter lengths produces
the best results.

• Trim only when grass and weeds are dry.

• The life of your cutting line is dependent upon:

• Proper adherence of trimming techniques (explained above)

• What vegetation is cut

• Where vegetation is cut

For example, the line will wear faster when trimming against a
foundation wall as opposed to trimming around a tree.

CAUTION: Do not remove or alter the line cutting
blade assembly. Excessive line length will make the
clutch overheat. This may lead to serious personal
injury or damage to the unit.

OPERATING INSTRUCTIONS

Fig. 9

ADJUSTING TRIMMING LINE LENGTH

The Bump Head™ cutting attachment allows you to release
trimming line without stopping the engine. To release more
line, lightly tap the cutting attachment on the ground (Fig. 10)
while operating the trimmer at high speed.

NOTE: Always keep the trimming line fully extended.

Line release becomes more difficult as cutting
line becomes shorter

Each time the head is bumped, about 1 inch (25.4 mm) of
trimming line releases. A blade in the cutting attachment
shield will cut the line to the proper length if any excess line
is released.

For best results, tap the bump knob on bare ground or hard soil.
If you attempt a line release in tall grass, the engine may stall.
Always keep the trimming line fully extended. Line release
becomes more difficult when the cutting line gets shorter.

DECORATIVE TRIMMING

Decorative trimming is accomplished by removing all
vegetation around trees, posts, fences, etc.

Rotate the whole unit so that the cutting attachment is at a
30° angle to the ground (Fig. 11).

Fig. 10

Fig. 11