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Bump feed & full futo feed type
As cutting devices for the Brushcutters, there are 2 different types in the industry, such as nylon line heads and metal blades (Chip-saws, 30 teeth blades etc.)
Cutting performance of Nylon line heads are not good as chip-saws and/or other metal blades but it does not have a risk of accidental cut on the feet or body of the operators like a case of metal blades usage.
As additional advantage of the Nylon line heads, once weeds or grass are cut by Nylon line heads, it will take a time to grow again due to ripped shape of the cutting edge of the weeds or grass.
Diatop's Nylon line heads which can be used in many different conditions and usages shall be categorized in 4 different types as shown below.

Ultra auto feed type ・・・ It features both Automatic feed and Bump feed.

Full auto feed type ・・・ It has Automatic feed function.

Bump feed type ・・・ The lines shall be fed once the bottom of the head is tapped on the ground when it is spinning.

Manual feed type ・・・ The lines shall be adjusted or replaced manually.
Automatic & Bump feed type
  • Once the line gets shorten during operation, it will be fed automatically
  • This automatic system can prevent over load on the engine because feeding length of the line shall be regulated depending on the power of the engine.
  • This head also equips the bump feed function that enables to feed the line once the bottom of the head is bumped on the ground when it is spinning.
  • Anybody can rewind the line easily
  • It can be used for most of the brush cutters by changing arbor bolt or nut for installation
Ultra Auto U6 Screw mount type
Screw mount type
Diameter Weight Capable Wind length of line Suitable engine Adoptable Bolts & Nuts Activate conditions for Automatic feeding system
6inch
622g MAX:φ3.0×8.0m 35cc~50cc For Male screws
M10x1.25L

For Female screws
M10x1.25L M10x1.00L
M12x1.75L M8x1.25L
Line will be fed about 3cm of long, in either one of the following cases
-Engine RPM reaches at 8,500rpm
-Bottom of the head is bumped on the ground when it is spinning
Ultra Auto U6_screw.pdf
See exploded view (PDF)
Ultra Auto U4 Screw mount type
Screw mount type
Diameter Weight Capable Wind length of line Suitable engine Adoptable Bolts & Nuts Activate conditions for Automatic feeding system
4inch
245g MAX:φ2.4×4.0m 20cc~30cc For Male screws
M10x1.25L M8x1.25L M7x1.00L

For Female screws
M10x1.25L M8x1.25L
M8x1.25R UNF3/8x24
Line will be fed about 3cm of long, in either one of the following cases
-Engine RPM reaches at 8,500rpm
-Bottom of the head is bumped on the ground when it is spinning
Ultra Auto U4_screw.pdf
See exploded view (PDF)
Download Adobe Reader to see exploded view (PDF)
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Automatic line feeding type
  • Once the line gets shorten during operation, it will be fed automatically.
  • This automatic system can prevent over load on the engine because feeding length of the line shall be regulated depending on the power of the engine.
  • This head also equips the bump feed function that enables to feed the line once the bottom of the head is bumped on the ground when it is spinning.
  • Anybody can rewind the line easily.
  • It can be used for most of the brushcutters by changing arbor bolt or nut for installation.
Full Auto A4 Round-hole-mount (same as the metal blade.)
Round-hole-mount (same as the metal blade.)
Diameter Weight Capable Wind length of line Suitable engine Adoptable Bolts & Nuts Activate conditions for Automatic feeding system
4inch
245g MAX:φ2.4×4.0m

How to wind cutting line. (Movie)
20cc~26cc Genuine bolts have your lawn mower and please tighten the nut.

Installation of the Full Auto A4. (Movie)
Line will be fed about 3cm of long, in either one of the following cases
-Engine RPM reaches at 8,500rpm
-Bottom of the head is bumped on the ground when it is spinning

The explanation of the lines which feed has automatically. (Movie)
Full Auto A4_universal.pdf
See exploded view (PDF)
Full Auto A4 screw mount type
Screw mount type
Diameter Weight Capable Wind length of line Suitable engine Adoptable Bolts & Nuts Activate conditions for Automatic feeding system
4inch
245g MAX:φ2.4×4.0m

How to wind cutting line.(Movie)
20cc~26cc For Male screws
M10x1.25L M8x1.25L M7x1.00L

For Female screws
M10x1.25L M8x1.25L
M8x1.25R UNF3/8x24

Installation of the Full Auto A4. (Movie)
Line will be fed about 3cm of long, in either one of the following cases
-Engine RPM reaches at 8,500rpm
-Bottom of the head is bumped on the ground when it is spinning

The explanation of the lines which feed has automatically. (Movie)
Full Auto A4_screw.pdf
See exploded view (PDF)
Download Adobe Reader to see exploded view (PDF)
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