Being handheld, the weight will always dictate the functionality of the model you choose. Note: Limiter caps and rings are damaged during removal. Get it as soon as Sat, Nov 21. Push the caps on to the adjust- ing screws until they are flush with the molding. With low vibrations, good cutting speed and plenty of power, this STIHL chainsaw is just the thing when it's time to get the job done. With low vibrations, good cutting speed and plenty of power, this STIHL chainsaw is just the thing when it's time to get the job done. Note: They are held in position by the integrally cast pegs (2) on the carburetor body. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. The integrally molded stop operates when the cap is fixed in position. 5/32″) pin punch to press the check valve squarely into the metering chamber as far as stop. It is only possible to correct idling speed within certain limits. Carburetors that are directly flange-mounted to the cylinder (without a resilient manifold to insulate vibrations) may be equipped with a control valve. It is no longer necessary to alter the setting of the high speed screw as contamination of the air filter increases. and high speed screw (2) with springs (3) down onto their seats. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Usea large pin punch to apply light pressure until the sealing plug or plate is flat. When finished cleaning, used carb cleaner and give it a good spray followed by a generous few puffs of compressed air to clean out anything that is lodged in there. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. The absorption of vaporization heat by the fuel represents a form of cooling for the components that give off the heat. jet bores. Moreover, fuel is more sluggish than air. The mixture is combustible between Lambda 0.7 and 1.25. Knock the pump piston (1) and spring (2) out of the bore (3). Therefore, the metering diaphragm (2) and gasket (3) should be fitted on the diaphragm cover. A torsion spring (1) acts via the governor lever and rod to keep the vane (2) in its neutral position (choke shutter is open). P11 is then lower than P3 so that primary mixture from the idle chamber (3) is added to the bypass air flowing through bypass ports (9 and 10) via the connecting passage (4). If this is not the case, the inlet control lever is bent and must be replaced. Moisture conden- ses on the intake passages, espe- cially in the carburetor. If necessary, the idle speed can be adjusted with the idle speed screw (LA). HT-7A or WT-223). This means that the change in the composition of the mixture for a given adjustment of the high speed screw is far less than on a carburetor that has no full-load semi-fixed jet. Insert screw(s) and tighten down securely. With low vibrations, good cutting speed and plenty of power, this STIHL chainsaw is just the thing when it's time to get the job done. The inlet needle (3) opens and fuel then flows from the pump chamber into the metering diaphragm chamber. Service manuals and all technical information bulletins describing engineering changes are intended exclusively for the use of STIHL servicing dealers. A certain amount of oil is added to the fuel for lubrication of the bearings and piston. Reduced kickback STIHL guide bars (with green label) Bar lengths: 30, 35, 40 cm (12, 14, 16 in.) On throttle shafts witha slotted pin (1), remove the E-clip (2). Observe safety precautions – see 1. Rotating the screw counterclock- wise reduces engine speed. They can be identified by the STIHL part number. If this pressure remains constant, the carburetor is airtight. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. Wet the pump diaphragm (3) with fuel and place it on the gasket. $15.39. Leave it out of the trimmer. Other identification numbers are stamped on the body of such models (e.g. Remove torsion spring (1), choke lever (2) and torsion spring (3) from the choke shaft (4). Torx blade TX27 and 19-13 and 19-16 spark plug wrenches. This in- creases engine speed as well as the risk of engine damage as a result of overheating. https://www.stihlusa.com/products/chain-saws/homeowner-saws/ms211 via the primary idle jet (6). Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Note: The diaphragm and the inlet and outlet valves are exposed to continuous alternating stresses and the material eventually shows signs of fatigue. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. If the carburetor gets damaged, gummed up, or contaminated with water causing white rust [white powder substance], the Stihl MS 211 carburetor will need to be replaced. Remove screws (1) from intake manifold, if fitted. Practical, multifunctional quality tool in a sturdy plastic case with both a 3.5 mm (for carburetor adjustments and cleaning grooves) and 7.0 mm slotted screwdriver. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. Carefully screw the high speed screw (2) and low speed screw. Take the torsion spring off the throttle shaft. – Use carburetor screwdriver to push caps into the rings until they snap into position. Dalom C1Q-S121C Carburetor w Air Filter for STIHL MS171 MS181 MS211 MS 181 171 211 Gas Chainsaw Fuel Filter Spark Plug 1139 120 1602 4.1 out of 5 stars 40. Remove the screwdriver and once more set idle speed to 3100 200 rpm with the idle speed screw. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Maximum engine speed is preset and no longer adjustable. Set the choke to the "run" position when the engine starts. Even for an experienced person it has starting problems. The heat necessary to vaporize the fuel is taken from the compo- nents the fuel flows through, i.e. Warning: Never use needles, wires or similar tools or fibrous cloths for cleaning the carburetor or jets. Primary mixture, air from the by- pass port (10) and the air which flows through the hole (8) in the throttle shutter mix together to form the idle mixture. When air flows through the venturi, fuel is drawn out of the metering diaphragm chamber, i.e. Adjusting the low speed screw (2) to change the idle fuel volume does not result in a change to the overall fuel volume. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. The reaction of the fuel, however, is sluggish by comparison because it first has to be set in motion by the vacuum. Check the carburetor adjustments. Fit lever (2) so that slotted pin (3) points towards intake fitting (4). If there is an annular indentation on the sealing cone of the inlet needle, it will be necessary to replace the inlet needle because it will no longer seal properly. Inspect spark arresting screen and clean or replace as necessary. Warning! Some machine versions are equipped with an automatic choke. Chris Deziel has a bachelor's degree in physics and a master's degree in humanities. Note: Turn screws very slowly and carefully – even slight movements produce a noticeable change in engine running behavior. The engine will surge when you do this. Remove the metering diaphragm and gasket from the carburetor body or diaphragm cover. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. A conversion from a HD (textile) filter to a standard (wire mesh) filter or vice versa does not neces- sitate readjustment of the mixture either. Check easy action of the inlet control lever. Push lever “A” on to the throttle shaft and, at the same time, lever “B” on to the choke shaft. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of the air filter so you have less maintenance. Attach bent end of torsion spring to pin on lever “H”. View and Download Stihl MS 171 instruction manual online. A new carburetor costs just a few dollars more, and eliminates the need for rebuilding. This service manual contains repair and servicing procedures for most carburetors used by Stihl. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. You can give the carburetor a good cleaning without even removing it from the trimmer. This means than consider- ably more air than fuel is sucked in, the mixture becomes too lean and does not burn well. Clean off the spark plug with a clean, dry towel and check the electrode gap with the spark plug gapper. Remove inlet control lever (2) with spindle (3) and spring. Wash full-load fixed jet in white spirit and blow out with compres- sed air. it is not integrated in the carburetor. This enables the mixture to be made leaner, if necessary, for operation at high altitudes and prevents it being enriched beyond the emission limits specified by EPA. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Carburetors can only seal properly when the fuel passages and all sealing points are wetted with fuel. MS 211. However, if it drops, the likely causes are: The inlet needle is not sealing (foreign matter in valve seat or sealing cone of inlet needle is damaged or inlet control lever sticking). Take out the gasket (1) and fuel strainer (2). Fuel now flows from the pump’s fuel chamber to the metering diaphragm chamber until the pressure in the metering diaphragm chamber is approxi- mately equal to the pressure applied to the outside of the metering diaphragm. Symbols are used in the text and illustrations for greater clarity. Check the metering diaphragm for distortion and replace if necessary. S 20) or printed (e.g. Open the air filter cover. Open the choke shutter “I” and hold it steady in that position. Brush it away with a cotton swab. Therefore, complete vaporization does not take place until the mixture rea- ches the combustion chamber. This causes the pump diaphragm (3) to flex. – Open the choke shutter by slowly turning the right-hand end of the choke shaft. Gasoline is an extremely flamm- able fuel and can be explosive in certain conditions. Cleaning the Air Filter. Flush dry carburetors with fuel before starting the test. On choke shafts with torsion spring, fit the E-clip. If the peg (1) is on the end cover, place the metering diaphragm. If the air filter is dirty, the air flow rate and pressure in the venturi (Pi) drop. ... *Needs light cleaning. Vibration could have thrown these out of specs. Push the caps on to the adjust- ing screws until they are flush with the insert (1). Only 9 left in stock - … Install choke shutter so that its entire circumference locates against the wall of the venturi. Screw puller (1) 5910 890 4500 into cap counterclockwise until it comes off the the head of the adjusting screw (left-hand thread). General. The full-load setting cannot be altered. Consult the troubleshooting chart – see 6. On some models the family designation (e.g. Excess fuel pumped into the metering diaphragm chamber passes through the bore (4) to the valve. or the top face of the carbure- tor body (2). Press the ring home until it is flush with the module. Includes a … The metering diaphragm is pushed upwards by atmospheric pressure. One talks about internal cooling. To clean the carburetor, strip it down and remove the adjusting screws, jets and inlet needle. Note: Gasket and metering dia- phragm are held in position by the integrally cast pegs. 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