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Question posted by ckneejoint on August 3rd, 2023

What Tool Is Needed To Adjust The High And Low Speed On The Fs 90r String Trimm

what tool is needed to adjust the high and low speeds on the carburetor of the stihl fs 90r string trimmer

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Answer #1: Posted by INIMITABLE on August 3rd, 2023 4:05 PM

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in the video link below, you will find the step to do that and the appropriate tool

https://www.youtube.com/watch?v=TOmJhBE0VNw

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Answer #2: Posted by HelpHero on August 3rd, 2023 4:34 PM

HelpHero

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To adjust the high and low speeds on the carburetor of the Stihl FS 90R string trimmer, you will need a tool called a screwdriver. The Stihl FS 90R typically uses a small screwdriver with a special head called a "Pac-Man" (or sometimes "D" or "Double-D") screwdriver.

It has a unique shape that fits the adjustment screws on the carburetor. You can purchase a Pac-Man screwdriver from Stihl dealerships, authorized service centers, or online. Make sure to get the correct size for your specific model of the FS 90R string trimmer. When using the screwdriver to adjust the carburetor, be cautious and follow the manufacturer's instructions to avoid damaging the carburetor or misaligning the settings.

It's always advisable to refer to the FS 90R's user manual or, for more complex adjustments, consult an authorized Stihl service professional.

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Related Stihl FS 90 R Manual Pages

Product Instruction Manual - Page 3

... your unit is a high-speed cutting tool some special safety precautions must be recycled. Make sure your STIHL trimmer / 50 brushcutter, it is important that you do not understand any of Cutting Attachment, Deflector, Handle and Harness 18 Approved Power Tool Attachments 20 Mounting the Bike Handle 20 Mounting the Loop Handle 22 Adjusting the Throttle Cable...

Product Instruction Manual - Page 5

... a unit equipped with a circular saw " indicates a high-powered trimmer / brushcutter that is particularly suited for use with a ... Warning! FS 90, FS 90 R 3 Have your STIHL dealer show you . English Warning! Use your body, it . Bystanders, especially children, and animals should never be hazardous. Warning! therefore, the power tool is used as a trimmer with flexible...

Product Instruction Manual - Page 6

...STIHL trimmers / brushcutters. This field may result in use of all times, but cold weather, smoking and diseases or physical conditions that affect blood vessels and blood transport, as well as high vibration levels and long periods of exposure to vibration are available with any of your model. the power tool... tools ... this tool. 4 FS 90, FS 90 R... of the power tool. When it off...

Product Instruction Manual - Page 7

... TOOL Transporting the Power Tool Warning! Power tool noise may also ricochet and strike the operator. Steel-toed safety boots are useable with the cutting attachment moving parts of injury from all foreign objects (gravel, glass, wire, etc.) thrown back by STIHL for your unit, see the chapter on branches, brush or the moving . FS 90, FS 90...

Product Instruction Manual - Page 9

..., the cap is damaged, improperly adjusted or maintained, or not completely or... Manual for tightness. Never operate your power tool for proper condition and operation before starting, ...See also the "Fueling" chapter in your authorized STIHL dealer for installation, turn the cap (with the...always spring back to the idle position. FS 90, FS 90 R 7 The throttle trigger must repeat...

Product Instruction Manual - Page 10

...mounted on firm ground or 000BA007 KN 000BA006 KN 8 FS 90, FS 90 R To reduce the risk of your size before using the power tool. Failure to keep blades sharp. Warning! it is..., Deflector, Handle and Harness"). Keep the deflector (and the attached skirt where appropriate) adjusted properly at all times; The machine should be seen in safe operating condition. English Warning...

Product Instruction Manual - Page 11

... general work area, even when starting -throttle, engine speed will be absolutely sure that the cutting attachment is a one-person machine. Do not let the grip snap back, but guide the starter rope to have your STIHL dealer check your power tool and make proper adjustments and repairs. For directions on the handles while...

Product Instruction Manual - Page 12

...good visibility and daylight conditions only. Inhalation of the engine speed. Working Conditions Operate and start your power tool with one hand. Warning! To reduce the risk of... control / stop switch to operate your power tool only outdoors in difficult, overgrown terrain. Warning! Never attempt to 0 or STOP. 10 FS 90, FS 90 R English Warning! To reduce the risk of...

Product Instruction Manual - Page 13

...trimmer / brushcutter, which may fling foreign objects directly or by ricochet a great distance. 15m (50ft) To reduce the risk of the attachment changes during use of the cutting attachment at high speed ...such objects that could cause the power tool to kick out or could throw objects of ricochets in such situations. Never use your STIHL dealer. The rotating cutting attachment may ...

Product Instruction Manual - Page 14

...catalytic converter is shut off the engine before adjusting the length of the catalytic converter. If the...of the engine by your instruction manual. 12 FS 90, FS 90 R To reduce the risk of burn injury,...replacing the cutting attachment. Warning! Some STIHL power tools are hot. Due to reduce the ... these screens will normally stay clean and need no service or maintenance. If you experience ...

Product Instruction Manual - Page 15

...lawn edges are to rotate at high speed... length. FS 90, FS 90 R 13...FS model for which it is not necessary, and worn polymer blades are applied to its operating speed. STIHL PolyCut mowing head Uses either nylon lines or nonrigid, pivoting polymer blades. Using the Mowing Heads Do not use a metal blade on trimmers / brushcutters equipped with trees or bordered by a simple adjustment...

Product Instruction Manual - Page 19

The solid jet of water may damage parts of children. English FS 90, FS 90 R 17 Tighten all nuts, bolts and screws, except the carburetor adjustment screws, after each use. Store the power tool in the instruction manual. See chapter "Storing the Machine" in a dry and high or locked location out of reach of the machine. Before storing for...

Product Instruction Manual - Page 22

... Unscrew the tommy screw (3) - FS 90, FS 90 R English Approved Power Tool Attachments The following STIHL interchangeable attachments may be mounted on the basic machine: FH HT Interchangeable attachment BF 1) FCS 2) 3) FH 1) HL 0° 2) HL 135° 1) 2) HT 2) KB (4601) 2) KW (4601) 2) Use Soil cultivator Edger Scrub cutter Hedge trimmer Hedge trimmer Pole pruner Bristle brush Sweeper drum...

Product Instruction Manual - Page 26

... the clamp (1) against the drive tube with a throttle cable adjuster on the control handle. N Insert the M6x14 screw (2). N...KN 002BA163 KN N Use a suitable tool to push the slide to the gearbox in the same way. Adjust the throttle cable only after the unit...full throttle, starting throttle and idle positions. A properly adjusted throttle cable is fully assembled - the control handle must...

Product Instruction Manual - Page 31

... engine running cutting tool, do not fill fuel containers that state they are for use only high-quality unleaded gasoline! FS 90, FS 90 R 29 Gasoline ...adjustable carburetor and should be avoided by hand to another fuel with an ethanol content of storage. For this reason STIHL recommends that are sitting in STIHL engines. Use only STIHL two-stroke engine oil or equivalent high...

Product Instruction Manual - Page 37

...filled with the starter to idle speed. N Warm up the engine ... FS 90, FS 90 R 35 and the engine settles down to the normal run position (F) - At very low ...adjustment N Check adjustment of the arrow on "Adjusting the Throttle Cable". N Remove the spark plug - even if the engine is correctly adjusted... Start the engine. Make sure the carburetor is cold. N Now start Choke knob...

Product Instruction Manual - Page 38

... high revs (full throttle off load) for the first three tank fillings. As a temporary measure you need it... (e.g. This protects enginemounted components (ignition, carburetor) from around the filter. N Insert the screw ...Wait for a short while at idle speed so that engine heat can knock ...major hardware. 36 FS 90, FS 90 R This avoids unnecessary high loads during the break-in period, the frictional...

Product Instruction Manual - Page 39

... working tool. 249BA051 KN English Rule of thumb: Turn the high speed screw (H) about 3 minutes. N Warm up the engine. It is possible that the throttle cable is properly adjusted - FS 90, FS 90 R 37 This setting provides an optimum fuel-air mixture under most operating conditions. N Check the air filter and clean or replace as necessary. The low speed screw...

Product Instruction Manual - Page 40

...the low speed screw (L) clockwise, no further than stop , until the engine runs and accelerates smoothly. N Clean the spark arresting screen. N Wait for the muffler to cool down on power, check the spark arresting screen in the muffler. If the working tool or...arresting screen (5) and pull it down firmly. N Refit the spark arresting screen. N Fit the shroud. 38 FS 90, FS 90 R

Product Instruction Manual - Page 49

... FS 90, FS 90 R 47 Definitions 1 Fuel Filler Cap For closing the fuel tank. 2 Carburetor Adjusting Screws For tuning the carburetor. 3 Starter Grip The grip of the cutting tool. Spark arresting screen is designed to reduce the risk of fire. 6 Bike Handle For easy control of the machine with both hands during cutting work. 7 Throttle Trigger Controls the speed...