Garden

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Stihl Product Instruction Manuals
A link to an OM for your saw follows:
http://www.stihlusa.com/stihl_ownersmanuals/044_Manual.pdf
Page 39 discusses carburetor adjustment.
These are just recommended starting points, the saw should be adjusted for performance. CW is leaner; to lean will ruin your saw.
If you have more questions or need additional help please reply below and I will get back to you. HTH & Good Luck.
Lou
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Adjusting the L screw clockwise can cause the chain to engage while the saw is idling. Adjusting the H screw clockwise increases the maximum speed of the engine and can cause damage to your saw`s engine if its operating capacity is exceeded.
The fuel line may be clogged from stale fuel deposits, more reasons to cause your chainsaw to cut out when applying throttle. If a fuel line is cracked, it will leak gasoline and draw air from outside into the fuel line. If the line is leaking fuel, it needs to be replaced.
On most carburetors, turning the mixture screw in (clockwise) leans the mixture, while counterclockwise (out) enriches the mixture. Initially, if the engine stumbles or the vacuum drops when turning the mixture screw in, turn both screws out about a -turn and evaluate the results.
H-Limit Screw Adjustment

The H-limit screw will cause the derailleur to move. Find the correct setting by first making the H-limit screw adjustment too tight. Now back out the H limit screw until it sits directly below the smallest cog. Take your screwdriver and tighten the H-limit screw one half turn.

This method involves looking at the base of the spark plug insulator (white part of the plug) for a slight coloring on the insulator just above where the insulator comes through the steel case. If the mixture is too lean, it will leave no color, while a rich mixture will cause the fuel ring to become more prominent.
The float level in the carburetor needs to be correct or it will never run properly, let alone at its best. If it is too low, the engine will have an off-idle stumble and be lean from that point to full load. If it`s too high, it can flood easily or be very rich and load up right off idle.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Carb settings for stihl ts 400
ANSWER : Standard settings: screw both in fully, unscrew H screw 1 full turn anticlockwise. unscrew the L screw 3/4 of a turn anticlockwise.

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My 290 isn’t oiling chain. I tried adjusting oil flow and still no oil?
ANSWER : You have to remove the bar and clean it out

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How to adjust chainsaw oiler on stihl MS230
ANSWER : You cant. the oiler on an Ms230 is preset and non adjustable. Make sure the oil worm gear isnt damaged

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Changed carb on a stihl 025 from a single set screw to a double set screw . what settings do i need to start initially
ANSWER : On the needle setting closest to engine(air) it is turn clockwise till it stops, then open it up counter clockwise 1 turn. The second adjustment needle, should be turned clockwise till it stops, then opened up 1 1/2 turns. Adjust the second or gas, until your engine sounds like it is running it’s best.

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Need parts list for Stihl FS 75 trimmer – Oregon Scientific Complete Carburetor for Stihl 4122 Brush Cutter and 4226HS Hedge Trimmer
ANSWER : Look at your local lawn and garden place some times they have extra parts that you can use for your trimmer. Or call the company them selfs and ask them if they have parts.

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How do I adjust the carb jet when it wont run?
ANSWER : Carl,I bought one of these,the engine locked up and it couldn’t be fixed,Stihl’s are junk,went and bought a huskavarna from Lowe’s,if buy your spark plugs,get them at Autozone,Stihl has a high mark up…

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Iginition coil test for sthil 044 – Stihl Chain Saw Handle Models 044 046 Ms440 Ms460
ANSWER : If it makes a blue spark, it’s probably good. More orange, probably too weak.

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I HAVE AN O17 STIHL CHAIN SAW AND IT LEAKS CHAIN OIL
EVEN WHEN IT IS NOT BEING USED
ANSWER : That can happen. When you go to store it, open the oil cap and then close it to lose the pressure the pump builds up inside.

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