INSTRUCTIONS FOR USE OF THE NYLON CUTTING HEAD
(BUMP & FEED BF4)
Safety Instructions
1. Read this section carefully and thoroughly before use.
2.Check the nylon cutting head carefully before each use. If you notice any of following, replace the worn or damaged parts with new ones immediately (Fig. 19):
Dents appear on the knob head.
The housing (cover)is damaged or cracked.
The "Limit marks (notches)"on the cover have disappeared.
3.Wear appropriate clothing and protectors.
4.Always stop the engine before inspecting the cutting head BF4 or replacing the nylon cord.
5.Do not allow anyone near the operation area. The cutters might send stones or debris flying, possibly harming bystanders.
6.Never use the cutting head BF4 on tools with a cutter head speed higher than 10,000 RPM.
Installation
See page 5 (Mounting the nylon cutting head)
Operation
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1. Increase the cutter head speed to approx. 6,000 RPM. Low speed (under4,000 RPM) causes inefficient cutting. Use the tip of the nylon cord (shaded area shown in Fig. 20) for more effective cutting.
2.When the nylon cord wears down (becomes short), decrease the engine speed to under 4,000 RPM and bump the knob of the nylon cutting head against the ground to feed out the nylon cord (Fig. 211.
imit mark (notch)
Fig. 19
$i
Shaded area
Fig. 20
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I | Parts Breakdown |
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