Will this fit the Stihl FS-90r?

Stihl FS90R has 10mmx x 1.0 threads, yes it will.

How do you get more string out when it wears down?

Tap it on a hard surface. It will feed out some string, and the excess will be removed by the cutter on the trimmer head (you didn't remove that, did you?). If you tap in the grass to do this, it will create a little burnout like those alien crop circles.

will it mount on a 3/8 fine thread stud. (not left hand thread)

It comes with a 3/8"-24 bushing that is right handed, for Echo GT series and others.

Will it fit my stihl 110 km?

In looking at the paperwork, I do not see that model noted. The Stihl models noted are in the FS--- series.Ken

Shindaiwa 78890 30000 Trimmer Head | Desertcart South Africa

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R1536

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Speed-Feed 400: Reload Fast, Trim Faster!

TIME SAVING DESIGN - Say goodbye to frustrating line changes and hello to more productive trimming sessions.
RAPID RELOAD SYSTEM - Reload your trimmer line in under 30 seconds without disassembly—maximize uptime and efficiency.
HEAVY DUTY DURABILITY - Built to handle tough ranch and landscaping jobs, compatible with legacy and modern machines alike.
UNIVERSAL COMPATIBILITY - Fits both straight and curved shaft trimmers with included adapters for seamless integration.
PROFESSIONAL TAP FEED MECHANISM - Easily advance line with a simple tap, keeping your workflow smooth and uninterrupted.

The Shindaiwa Speed-Feed 400 is a universal bump feed trimmer head designed for professional and heavy-duty use. It includes adapters for both straight and curved shaft models, enabling quick line reloads in 30 seconds or less without disassembly. Featuring a tap-to-advance line feed mechanism, it enhances efficiency and reduces downtime, making it a top choice for serious landscapers and ranchers.

Specifications

ASIN	B00DRNIZ2C
Best Sellers Rank	#25,116 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #154 in String Trimmer Replacement Parts
Customer Reviews	4.2 4.2 out of 5 stars (2,417)
Item Weight	12.8 ounces
Item model number	78890-30000
Manufacturer	Shindaiwa
Product Dimensions	16 x 10 x 1 inches

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R1536

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

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TrustScore 4.5 | 7,300+ reviews

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Shindaiwa 78890-30000 Trimmer Head

Description

Specifications

Common Questions