2. Shindaiwa Speed-Feed® Trimmer Heads
4.5 in/ 115 mm Model 450
3.75 in/ 95 mm Model 375

3. New Terminologies Only 6 basic components Knob Eyelet carrier Core
Spool
Cover

4. Shindaiwa’s Unique New Head!
In-house design
US Pat #6,952,877
Others pending
Unique features
Glass-filled nylon

5. Low-Vibration Top (winder) serves as vibration-dampening disk
Most parts secured to
gearcase
Rigid control of dimensions, molding process

6. Replaceable Eyelets Diecast eyelets shaped for less line breakage
Slotted for faster loading if head disassembled

7. Less Line Welding Separate spool for each line
Line exists in opposing direction for line tensioning

8. Large Wear Surface At Base
Less frequent replacement of
bump knob
Less chance of devoting/scalping

9. Better Sealing Double-wall design prevents internal debris buildup
Maximizes rigidity, strength

10. Fastest Line Loading
Load right off the spool!

11. Demonstration is Essential!
This head has extremely unique features
It must be demonstrated for maximum impact

12. Assembly Note Mount arbor bolt securely into gearcase.
Thread head onto arbor bolt.
Will cause excessive vibration if not tight in gearcase!

13. Head Disassembly (TSB272)
Remove cover with your thumbs.
Thumb pressure is much greater than finger pressure!
Two clicks when properly assembled!

14. Speed-Feed® 450 (SFH450) Head

15. SFH450
Dedicated spool
Straight-shaft, LH only

16. SFH450 Line capacity 6.1 m with 2.65 mm (0.105”)
Any shape to this capacity

17. Speed-Feed® 450 Improvements
Reduced vibration by:
Improved core concentricity.
Tighter eyelet weight tolerance.
Accepts 3.3 mm (0.130”) line

18. Speed-Feed® 375 SFH375 Head

19. Design Background Light duty commercial head.
For smaller displacement models.
High-end consumer (prosumer).
Straight (LH) & flex shaft (RH) units.

20. Dimensions SFH 375 Diameter: 95 mm (3.75”)
Height: 2.3” (58 mm) (same as Speed-Feed® 450)
Weight: 360 grams

21. Interchangeability Between Speed-Feed® 375 & 450
5 parts plus studs:
Spring
Spring cap
Core
Eyelets
Bushing

22. LH & RH Arbor Bolt Versions
Available arbors:
7mm LH male
8mm LH male
8mm RH male (new!)

23. Capacity Speed-Feed 375 9 ft. with 2.4 mm (0.095”)
Note: will accept 2.65 mm (0.105”) (+2.65 mm (0.105” square), but not recommended for smaller displacement units!

24. Universal Speed-Feed
Speed-Feed 375 (Straight Shaft)
P/N
Fits: Shindaiwa, Homelite, Echo, Honda, Kaaz, McCulloch, Zenoah, Solo, Stihl, Tanaka
Speed-Feed 375 (curved shaft)
P/N
Fits: Shindaiwa, Homelite, Echo, McCulloch, Poulan, Tanaka, Weedeater
Speed-Feed 450 (Straight shaft)
P/N

25. Competition

26. Design Differences vs. Competitive Heads
Eliminate small-diameter bump knob.
Cover is the advancing mechanism.
Larger surface area.
Less wear.
Less divoting, scalping.
No disassembly to reload line (30 sec. or less)!
Stays cleaner inside

27. Conclusion
Two serious threats to Stihl’s AutoCut business!

28. Thank you!