Fine Tuning Screw L Low Speed Fuel Adjustment Screw

The screw with the {L} marking is the Low Speed screw. Set the low speed fuel adjustment. Slowly turn in the screw until the engine surges or starves for fuel. Make a mental note of the position of the screwdriver slot. Now slowly turn the adjustment screw out and the engine should run better. Keep turning the screw until the engine starts to load up. Make a note of the position of the screwdriver slot and compare it to the position of the lean adjustment. Now slowly turn in the screw to a position where it idles the best. It should be about midway between the rich and lean settings. Slowly we lean the low speed adjuster by turning it in, till the idle climbs and it then starts to die. Then we go rich and hear the saw start to blubber and the RPM’s drop, almost to a point where it dies. The optimum setting is between these two extremes. If you think you’ve found just the right spot squeeze the throttle and the saw should rev up without any hesitation or stumbling.

Fine Tuning Screw H High Speed Fuel Adjustment Screw

Best method is to turn the {H} screw out 2 turns and fire up the engine. With the engine running full speed, adjust the {H} screw outwards until the engine exhaust burns slightly black and or blue smoke. Then turn the same screw inwards until the engine just starts to run too lean. This may be indicated by a drastically or slightly increased speed just before the engine appears to die slightly or totally. The center point between the 2 extremes is often times but not always, the best setting. On a 2 cycle engine. I adjust the high speed rich, causing it to slow down and bubble. Then we adjust it lean causing it to sound smoother and then it starts to starved Screw

« Carburetor Settings for a Stihl Chainsaw

Stihl Chainsaw Carburetor Tuning Chart »

1. Compression Test Can you lift the saw off the ground with the pull rope?
2. Fuel Test Remove air filter and, spray premix into the carburetor and try to start. Use a 50:1 fuel mixture with premium fuel and Stihl oil
3. Spark Test Remove spark plug clean with solvent & wire brush. Reconnect plug wire and let plug hang close to engine. Pull the starter rope and look for spark. Dim lighting makes it easier to see. If no spark replace plug and try again. Check off/on switch and wire coming from coil. If still no spark replace coil. (Older saws clean and adjust points first)
4. If saw runs but, not on gas in tank, check gas tank for old gas. Empty old gas and, look for syrup in the bottom of the tank, if present clean thoroughly. Use carburetor cleaner, gas and a brush that can reach in and not melt. Try to start with fresh gas mix. If it doesn’t start check and replace fuel line and pick-up. If it still doesn’t start remove carburetor and check manifold boot (tube between carburetor and engine). Replace if needed and try to start. If it still doesn’t start remove carburetor,disassemble and clean thoroughly. You may have to soak in Simple-Green overnight. Try not to get solvent or carburetor cleaner on gaskets. Check gaskets. Diaphragm gasket should be smooth and puffy not wrinkled or wilted. If in doubt replace. Carburetor kits are around $8-$15 and include all gaskets, needle and spring. Reassemble (making sure all gaskets are positioned properly) and try to start. If it still doesn’t start replace carburetor.

« Stihl Chainsaw Troubleshooting GuideCarburetor Settings for a Stihl Chainsaw »

I’ve been experimenting with polishing my cast iron skillet. I started with a 10 inch cast iron frying pan. I polish the inside bottom of the pan with an orbital sander start with 30, 50, 80, 120 and , 220 grit. I used 30 sanding disks and 4 hours of time. once the pan was shinny and smooth I heated the pan on low heat, on a paper towel I scoop out some Crisco about the size of a lima bean, or follow these outstanding instructions Rub the Crisco into the pan so its just wet just a very thin layer is best. Turning the pan upside down and using vegetable oil turned out to be a disaster. Next I let the pan bake at 500 for one hour. after baking I had a thin almost clear layer on our pan at this point it felt like glass. I cooked some fish sticks on this pan it was pure joy the fish sticks slide around like they were on ice. The goal is to have the slickest surface I can produce. Photos coming soon

Read The Caption on the first photo — then look at the second photo

Look at the picture above, and you can see where this driver broke through the guardrail, on he right side of the culvert, where people are standing on the road, pointing. The pick-up was raveling about 75 mph, from right to left, when it crashed through the guardrail. It flipped end-over-end, bounced off and across the culvert outlet, and landed right-side-up on the left side of the culvert, facing the opposite direction from which the driver was traveling. The 22-year-old driver and his 18-year-old passenger were unhurt, except for minor cuts and bruises. Just outside Flagstaff , AZ on U..S. Hwy 100.
Now, look at the second picture below . . .


If this guy didn’t believe in God before, do you suppose he believes now?

What happened to the radiation that’s supposed to last thousands of years??

We all know that Hiroshima and Nagasaki were destroyed in August 1945 by atomic bombs. However, we know little about the progress made by the people during the past 64 years.

HIROSHIMA – 64 YEARS LATER

DETROIT – 64 YEARS AFTER HIROSHIMA…..

What has caused more long term destruction ….


The A-bomb or politics?

Stihl chainsaws’ have three carburetor adjustment screws

(LA) Idle Speed screw - This controls the engine speed at idle. If set too low, the saw will die. If set too high the chain will run. This is dangerous.

(L) Low speed adjustment screw - This is the low speed jet. This is the adjustment that controls the air/fuel mixture at idle. Adjust this screw too rich and the chainsaw will blubber and die at idle speed. Adjust this screw too lean and the engine will starve. The saw will race or surge. An extremely lean adjustment will also cause the engine to die.

(H) High speed adjustment screw - This is the high speed jet. This is the adjustment that controls the air/fuel mixture at high RPMs. Adjust this screw too rich and the chainsaw will blubber, too lean and it will over rev

Safe Basic Settings

Screws (H) & (L) - Turn the adjustment Screws (H) & (L) down onto their seats (clockwise). Back them off 1 complete turn (counter-clockwise)
Screw (LA) - Turn (LA) Idle Speed screw until the chain stops. Then turn counter-clockwise one quarter of a turn.

Fine Tuning – Screw (L)

Erratic idling behavior; poor acceleration - Idle setting too lean; turn low speed adjusting screw (L) counterclockwise until engine runs and accelerates smoothly. Readjust screw (LA).

Exhaust smokes at idle speed -Idle speed setting too rich; turn low speed adjusting screw (L) clockwise until engine speed drops. Then turn screw back one quarter turn and check that engine still accelerates smoothly when you open the throttle. Readjust screw (LA).

SCREW(H)—CAUTION!

Adjustment of the high speed adjusting screw(H)not only affects the power output but also the maximum off-load engine speed. If the setting is too lean (screw turned too far clockwise), the maximum permissible engine speed will be exceeded. This can cause engine damage, brought about by lack of lubrication and overheating in particular. Corrections to the setting of the high speed adjusting screw may be carried out only if an accurate tachometer is available to check the maximum engine speed of 13,000 rpm (with bar and correctly tensioned chain).

When the engine is tested at the factory the carburetor is set to obtain a slightly richer mixture to ensure that the cylinder bore and the bearings receive additional lubrication during the break-in period. This setting should be left as it is for the first three tank fillings. The high speed adjusting screw may then be turned no more than 1/4 turn clockwise (leaner mixture). Caution: The engine”s maxi­mum permissible rpm must not be exceeded! Note that even slight alterations on the adjusting screws have a noticeable effect on the engine”s running behavior. Only carry out carburetor adjustments after cleaning the air filter and warming up the engine.

If you have no means of checking the maximum engine speed, do not set the high speed adjusting screw (H) any leaner by turning it (clockwise) beyond the basic setting Above!

« Stihl Chainsaw Carburetor Tuning ChartStihl Chainsaw Troubleshooting Guide »

This how-to works with a Husqvarna, husky, Jonsered, Poulan, McCulloch, Craftsman, Homelite, Echo chainsaws as well as a Stihl 009, 009L,011, 011T,012, 017, 018, 018C, 019, 019T, 020, 020AV, 020T, 021, 023, 024, 025, 026, 026 PRO, 028, 029, 034, 036, 036 PRO, 036 QS II, 039, 044, 046M, 066M, 088M, MS170, MS180C, MS191T, MS192T, MS200, MS200T, MS210, MS250, MS260, MS260 PRO, MS270, MS280, MS290, MS310, MS360, MS360 PRO, MS360 QS II, MS361, MS390, MS440, MS460, MS660, MS880, HT100, HT101, HT70, HT75 STIHL – Virtual factory visit

SCREW(H)—CAUTION!

Adjustment of the high speed adjusting screw(H)not only affects the power output but also the maximum off-load engine speed. If the setting is too lean (screw turned too far clockwise), the maximum permissible engine speed will be exceeded. This can cause engine damage, brought about by lack of lubrication and overheating in particular. Corrections to the setting of the high speed adjusting screw may be carried out only if an accurate tachometer is available to check the maximum engine speed of 13,000 rpm.

When the engine is tested at the factory the carburetor is set to obtain a slightly richer mixture to ensure that the cylinder bore and the bearings receive additional lubrica­tion during the break-in period. This setting should be left as it is for the first three tank fillings. The high speed adjusting screw may then be turned no more than 1/4 turn clockwise (leaner mixture). Caution: The engine”s maxi­mum permissible rpm must not be exceeded! Note that even slight alterations on the adjusting screws have a noticeable effect on the engine”s running behavior. Only carry out carburetor adjustments after cleaning the air filter and warming up the engine.

If you have no means of checking the maximum engine speed, do not set the high speed adjusting screw (H) any leaner by turning it (clockwise) beyond the basic setting below!

Safe Basic Setting For Screws (H) & (L)

Carefully screw the two adjusting Screws (H) & (L) down onto their seats (clockwise). Then:High speed adjusting screw (H): back off 1 complete turnLow speed adjusting screw (L): back off 1 complete turn

Basic Setting For Screw (LA)

Turn idle speed adjusting screw (LA) until the blade stops. Then turn counter-clockwise one quarter of a turn.

Fine Tuning – Screw(L)

Erratic idling behavior; poor acceleration

Idle setting too lean; turn low speed adjusting screw (L) counterclockwise until engine runs and accelerates smoothly. Now readjust screw (LA).

Exhaust smokes at idle speed

Idle speed setting too rich; turn low speed adjusting screw (L) clockwise until engine speed drops. Then turn screw back one quarter turn and check that engine still accelerates smoothly when you open the throttle. Now readjust screw (LA).

Stihl Line Saw Troubleshooting Guide

1. Compression Test – Can you lift the Saw off the ground with the pull rope?2. Fuel Test- Remove air filter and cover and spray starter fluid in the carburetor and try to start. Use a 50:1 fuel mixture with pr emium fuel3. Spark Test – Remove spark plug clean with solvent & wire brush. Reconnect plug wire and let plug hang close to engine block (away from any gas) pull starter rope and look for spark, dim lighting makes it easier to see. If no spark replace plug and try again. Check off/on switch and wire coming from coil. If still no spark replace coil. (Older saws clean and adjust points first)4. Saw runs on starter fluid not on gas in tank. Check gas tank for old gas, empty old gas look for “syrup gunk” in the bottom of the tank, if present clean and rinse several times until clean (I use carburetor cleaner & gas and any brush that can reach in and not melt) Try to start with fresh gas mix. If it doesn’t start check and replace fuel line and pick-up. If it still doesn’t start remove carburetor and check manifold boot (tube between carburetor and engine) replace if needed and try to start. If it still doesn’t start remove carburetor, disassemble and clean carburetor, (clean outside of carburetor first) you may have to disassemble and soak in solvent over night try not to get solvent or carburetor cleaner on gaskets. Check gaskets, diaphragm gasket should be smooth and puffy not wrinkled or wilted if in doubt replace. Carburetor kits are around $8-$15 and include all gaskets, needle and spring. Reassemble (making sure all gaskets are positioned properly) and try to start if it still doesn’t start replace carburetor.Stihl TS CutQuik Line Saws on ebay: TS-350 - TS-360 - TS-400 - TS-410 - TS-420 - TS-450 - TS-460 - TS-510 - TS-700 - TS-760 - TS-800

SCREW(H)—CAUTION!

Adjustment of the high speed adjusting screw(H)not only affects the power output but also the maximum off-load engine speed. If the setting is too lean (screw turned too far clockwise), the maximum permissible engine speed will be exceeded. This can cause engine damage, brought about by lack of lubrication and overheating in particular. Corrections to the setting of the high speed adjusting screw may be carried out only if an accurate tachometer is available to check the maximum engine speed of 13,000 rpm.

When the engine is tested at the factory the carburetor is set to obtain a slightly richer mixture to ensure that the cylinder bore and the bearings receive additional lubrica­tion during the break-in period. This setting should be left as it is for the first three tank fillings. The high speed adjusting screw may then be turned no more than 1/4 turn clockwise (leaner mixture). Caution: The engine”s maxi­mum permissible rpm must not be exceeded! Note that even slight alterations on the adjusting screws have a noticeable effect on the engine”s running behavior. Only carry out carburetor adjustments after cleaning the air filter and warming up the engine.

If you have no means of checking the maximum engine speed, do not set the high speed adjusting screw (H) any leaner by turning it (clockwise) beyond the basic setting below!

Safe Basic Setting For Screws (H) & (L)

Carefully screw the two adjusting Screws (H) & (L) down onto their seats (clockwise). Then:High speed adjusting screw (H): back off 1 complete turnLow speed adjusting screw (L): back off 1 complete turn

Basic Setting For Screw (LA)

Turn idle speed adjusting screw (LA) until the blower stops. Then turn counter-clockwise one quarter of a turn.

Fine Tuning – Screw(L)

Erratic idling behavior; poor acceleration

Idle setting too lean; turn low speed adjusting screw (L) counterclockwise until engine runs and accelerates smoothly. Now readjust screw (LA).

Exhaust smokes at idle speed

Idle speed setting too rich; turn low speed adjusting screw (L) clockwise until engine speed drops. Then turn screw back one quarter turn and check that engine still accelerates smoothly when you open the throttle. Now readjust screw (LA).

Stihl Blower Troubleshooting Guide

1. Compression Test – Can you lift the blower off the ground with the pull rope?2. Fuel Test- Remove air filter and cover and spray starter fluid in the carburetor and try to start. Use a 50:1 fuel mixture with premium fuel3. Spark Test – Remove spark plug clean with solvent & wire brush. Reconnect plug wire and let plug hang close to engine block (away from any gas) pull starter rope and look for spark, dim lighting makes it easier to see. If no spark replace plug and try again. Check off/on switch and wire coming from coil. If still no spark replace coil.4. The blower runs on starter fluid not on gas in tank. Check gas tank for old gas, empty old gas look for “syrup gunk” in the bottom of the tank, if present clean and rinse several times until clean (I use carburetor cleaner & gas and any brush that can reach in and not melt) Try to start with fresh gas mix. If it doesn’t start check and replace fuel line and pick-up. If it still doesn’t start remove carburetor and check manifold boot (tube between carburetor and engine) replace if needed and try to start. If it still doesn’t start remove carburetor, disassemble and clean carburetor, (clean outside of carburetor first) you may have to disassemble and soak in solvent over night try not to get solvent or carburetor cleaner on gaskets. Check gaskets, diaphragm gasket should be smooth and puffy not wrinkled or wilted if in doubt replace. Carburetor kits are around $8-$15 and include all gaskets, needle and spring. Reassemble (making sure all gaskets are positioned properly) and try to start if it still doesn’t start replace carburetor.Stihl Blowers & Vacuums Models on ebay; BG45 * BG55 * BG65 * BG85 * BR320 * BR340 * BR400 * BR420 * BR500 * BR550 * BR600 * SH55 * SH65 * SH85 * SR420

SCREW(H)—CAUTION!

Adjustment of the high speed adjusting screw(H) not only affects the power output but also the maximum off-load engine speed. If the setting is too lean (screw turned too far clockwise), the maximum permissible engine speed will be exceeded. This can cause engine damage, brought about by lack of lubrication and overheating in particular. Corrections to the setting of the high speed adjusting screw may be carried out only if an accurate tachometer is available to check the maximum engine speed of 13,000 rpm.

When the engine is tested at the factory the carburetor is set to obtain a slightly richer mixture to ensure that the cylinder bore and the bearings receive additional lubrica­tion during the break-in period. This setting should be left as it is for the first three tank fillings. The high speed adjusting screw may then be turned no more than 1/4 turn clockwise (leaner mixture). Caution: The engine”s maxi­mum permissible rpm must not be exceeded! Note that even slight alterations on the adjusting screws have a noticeable effect on the engine”s running behavior. Only carry out carburetor adjustments after cleaning the air filter and warming up the engine.

If you have no means of checking the maximum engine speed, do not set the high speed adjusting screw (H) any leaner by turning it (clockwise) beyond the basic setting below!

Safe Basic Setting For Screws (H) & (L)

Carefully screw the two adjusting Screws (H) & (L) down onto their seats (clockwise). Then:High speed adjusting screw (H): back off 1 complete turnLow speed adjusting screw (L): back off 1 complete turn

Basic Setting For Screw (LA)

Turn idle speed adjusting screw (LA) until the trimmer stops. Then turn counter-clockwise one quarter of a turn.

Fine Tuning – Screw(L)

Erratic idling behavior; poor acceleration

Idle setting too lean; turn low speed adjusting screw (L) counterclockwise until engine runs and accelerates smoothly. Now readjust screw (LA).

Exhaust smokes at idle speed

Idle speed setting too rich; turn low speed adjusting screw (L) clockwise until engine speed drops. Then turn screw back one quarter turn and check that engine still accelerates smoothly when you open the throttle. Now readjust screw (LA).

Stihl trimmer Troubleshooting Guide

1. Compression Test – Can you lift the trammer off the ground with the pull rope?2. Fuel Test- Remove air filter and cover and spray starter fluid in the carburetor and try to start. Use a 50:1 fuel mixture with premium fuel3. Spark Test – Remove spark plug clean with solvent & wire brush. Reconnect plug wire and let plug hang close to engine block (away from any gas) pull starter rope and look for spark, dim lighting makes it easier to see. If no spark replace plug and try again. Check off/on switch and wire coming from coil. If still no spark replace coil.4. Trimmer runs on starter fluid not on gas in tank. Check gas tank for old gas, empty old gas look for “syrup gunk” in the bottom of the tank, if present clean and rinse several times until clean (I use carburetor cleaner & gas and any brush that can reach in and not melt) Try to start with fresh gas mix. If it doesn’t start check and replace fuel line and pick-up. If it still doesn’t start remove carburetor and check manifold boot (tube between carburetor and engine) replace if needed and try to start. If it still doesn’t start remove carburetor, disassemble and clean carburetor, (clean outside of carburetor first) you may have to disassemble and soak in solvent over night try not to get solvent or carburetor cleaner on gaskets. Check gaskets, diaphragm gasket should be smooth and puffy not wrinkled or wilted if in doubt replace. Carburetor kits are around $8-$15 and include all gaskets, needle and spring. Reassemble (making sure all gaskets are positioned properly) and try to start if it still doesn’t start replace carburetor.

This Tune Up guide is for the following Models of Stihl Trimmers:

Click to see the Stihl trimmers on ebay: FS100 * FS110 * FS110 R * FS120 * FS120 R * FS130 * FS130 R * FS200 * FS200 R * FS250 * FS250 R * FS350 * FS36 * FS40 * FS44 * FS44 R * FS45 * FS450 * FS46 * FS55 * FS55 * FS550 * FS75 * FS80 * FS80 R * FS85 * FS85 R * FS90 * FS90 R * KM110 R * KM55 R * KM85