Experienced gardeners share their insights in answering this question :
I googled your fs38. It is a Stihl FS38. The first sight on the search comes up with an 82 page operating manual from stihl.caThis should help.Good Day.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Always use the correct diameter of nylon line for your Line Trimmer (2 mm for this model).
095, . 105, and . 130 diameters and is specially formulated to prevent fraying and welding. It`s an excellent “multi-purpose” line, designed to hold up under a wide range of cutting conditions.
String trimmer line comes in a range of thicknesses or sizes. For light work, such as trimming grass, 0.065″-0.085″ should be sufficient. For thicker grass and weeds, a line in the 0.085″-0.110″ range will get the job done, and for thicker underbrush, anything thicker than 0.110″ will work.
Cobra strimmer line is available in 1.6mm, 2.0mm, 2.4mm, 2.7mm and 3.0mm diameter and various lengths. The packaging has a colour-coded label which makes the line diameter easily identifiable.
We recommend a 50:1 mix ratio (20mls oil per 1 litre fuel) when using STIHL 2-Stroke oil. If you`re using a different brand of 2-Stroke oil, you`ll need to mix at 25:1 (40mls oil per 1 litre fuel).
All STIHL gasoline-powered equipment uses a 50:1 gas and oil mixture.
Understanding Trimmer Line Size

0.080 inches: Good for medium-duty tasks such as trimming around trees or bushes. 0.095 inches: Ideal for heavier-duty tasks such as cutting through thick weeds and tall grass in larger yards.

Makita String Trimmer Line is universal spiral line for use with string trimmers. The . 065” diameter line is ideal for use with battery powered equipment, including Makita 18V and 18V X2 LXT string trimmers.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Need to know how to wind trimmer line on trimmer
ANSWER : Depends on the trimmer, all heads are different. However, the majority of trimmers are wound as follows:

1. pop the top cover off the head, pull the spool out. It will be either single or double lined, they will be wound counter clock wise.
2. the end of each line goes out each of the seperate holes
3. slide spool back on and replace cover

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Need string for Homelite trimmer (Model UT20042)
ANSWER : Genarally the size of line for that size of line trimmer is 2.0mm

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What is the correct gas and oil mixture for my Homelite trimmer Model 20583C.
I attempted to find the manual for this trimmer on line, but did not have any success
ANSWER : Hi hmarlow…

I am sorry I could not find a user manual for you either..
But as fas as fuel/oil mixture use a 50 to 1 mixture.
1 pint of 2 cycle oil to 6 gallons of gasoline
Please take time to rate me

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Need to replace fuel lines on my Troy Bilt gas hedge trimmer. Where can I get replacement fuel lines… or better yet… what size are the lines and where can I buy a few feet of the lines. Note: I have reviewed the parts assembly and it would seem to indicate I have to replace the entire handle assembly (Part #1) instead of just buying replacement hose(s). Any help to resolve my issue would be greatly appreciated and thanks in advance
ANSWER : Replacement fuel lines should be readily available at your local lawnmower repair shop. Your TroyBilt hedger uses fuel line that is 3/32″ (2.4mm) interior dimension, 3/16″ (4.8mm) outside dimension, with a 3/64″ (1.2mm) wall dimension.
Most manufacturers don’t offer replacement line, only fuel tank assemblies. Find your local shop, and try to get the TYGON brand…it is yellow. Tygon lasts the longest. You should be able to buy it by the foot for less than $2 per foot. You will need 2 feet of hose to replace both lines.

Make sure to clean the in-tank filter when replacing hoses.

Good luck.

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Trimmer head won’t turn
ANSWER : If you didn’t recently take it apart, then it sounds like you have broken the drive shaft in the neck of the trimmer. You can probably find this at an outdoor power and equipment type of store.Jim

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HOW DO I FIX THE FUEL LINES ON MY husquravana 128ld gas trimmer?
ANSWER : Buy new ones and replace one at a time, HUSQVARNA 128LD

Fuel Line Fitting
PART NUMBER: 530023877


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Try to replace 2 gas lines that from the craftsman gas line trimmer, but forgot how to put them back…any manual availabel?
ANSWER : Can you show me a diagram?

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I cannot get more line out of my toro 15″ electric trimmer. It cannot be empty, it has only been used once. The cutting line will not extend out any more. Should it not?
ANSWER : Sometimes the line can become fused together.remove the spindle and manually pull the line. Replace and the tap and feed should work fine.

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