Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. During operation the check valve opens and allows fuel to flow to the main jet and the idle jet bores. How to Clean a Husqvarna 223L Trimmer Exhaust, How to Adjust the Carburetor on a Poulan Pole Saw, Stihl: STIHL Trimmer and Brushcutter Common Features, YouTube: Stihl Trimmer Weed Eater Repair -- Stihl Carburetor Repair-Replacement fs, fc, km, hl, 45, 46, 55, My String Trimmer Starts, But Won't Stay Running, How to Adjust the Carb on a Ryobi 766R Trimmer, My Stihl Weed Trimmer Is Dying at Full Throttle. Warning! MS 171, MS 171 C, MS 181, MS 181 C, MS 211, MS 211 C English 2 This Instruction Manual refers to a STIHL chain saw, also called a machine in this Instruction Manual. 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 amount of bypass air can be adjusted with the idle speed screw (LD screw). Carefully separate the diaphragm and gasket. If you're having trouble starting your Stihl trimmer, a blocked carburetor is one of the possible reasons. The inlet needle (3) opens and fuel then flows from the pump chamber into the metering diaphragm chamber. 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. Swing lever “A” counterclock- wise as far as stop. Remove torsion spring (1), choke lever (2) and torsion spring (3) from the choke shaft (4). Details about Stihl MS-211 Chainsaw OEM - Carburetor. Rotate lever “B” on choke shaft counterclockwise as far as stop. Note: The throttle shaft is longer than on carburetors without automatic choke. Fit pump piston (1) in the bore, closed end facing outward. 80% at H = 1) is al- ways pumped from the metering di- aphragm chamber (3) via the full- load semi-fixed jet (1) and through the main jet (4) to the venturi, irre- spective of the setting of the high speed screw (2). Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Moisture conden- ses on the intake passages, espe- cially in the carburetor. When the pump bulb (1) is de- pressed, the valve (2) opens and allows air or any fuel in the bulb to flow back to the tank via the fitting (3). General. Take the torsion spring off the throttle shaft. 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. Press lever “H” on to the throttle shaft. There is no high speed screw. The piston (1) is located in a bore behind the throttle shaft (2) and is held in its neutral position by a spring (3). Check easy action of the inlet control lever. Stihl MS-211 Chainsaw OEM - Carburetor. (L) firmly against their seats, open them one turn. Power supply takes place automat- ically via the heating generator. Note: Limiter caps are damaged during removal. In view of the machine applica- tions, the carburetor must operate trouble-free in all positions. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Install full-load fixed jet exactly vertical in the bore. 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. MS 211. Remove the intake manifold (2) and gasket (3). It shows the instal- led positions and the assembly se- quence of individual components and assemblies. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. The lack of fresh gas contain- ing oil results in inadequate lubri- cation and a risk of seizure. Some models are equipped with an electric carburetor heating system for operation in extremely cold climates, in which the intake air from around the engine is still too cold. Air can absorb a certain amount of moisture. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Symbols are used in the text and illustrations for greater clarity. MS 211. 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. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. The torsion spring must move levers “A” and “B” into the positions shown in the illustration. MS 211. © Copyright 2020 Hearst Communications, Inc. Air flows through a narrow gap between the throttle shutter and venturi. Engine intake air flows through this venturi. Install throttle 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). To clean the carburetor, strip it down and remove the adjusting screws, jets and inlet needle. It is not directly connected to the metering diaphragm chamber. Adjusting the Carburetor. 49. Powered by a low-emission engine, this chainsaw features a preseparation air filtration system— extending the cleaning life of … Excess fuel pumped into the metering diaphragm chamber passes through the bore (4) to the valve. Conventional adjusting screws create an annular gap (1) at the throttle orifice which can become blocked within a relatively short time. Set the idle speed to 3100  200 rpm with the idle speed screw (1). Fuel burns cleanly at this mixture ratio. 50. The low pressure causes addi- tional fuel to be drawn off and enrich the fuel-air mixture in response to the throttle shutter position. Adjusting idle speed Note: Use a tachometer. The throttle shutter returns to the idle position when the choke shutter is fully open. The flow of fuel is reduced so that the mixture cannot become over-rich. – Use idle speed screw (LA) to set engine speed to 2500 rpm. Remove inlet control lever (1) with spindle (2). Replace the prefilter, attach the carburetor box cover and tighten the knob in front of the rear handle. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Includes a … A carburetor equipped with a com- pensator therefore keeps the fuel content in the mixture constant at all times, irrespective of air filter contamination. On carburetors with a full-load fixed jet (1) all the fuel required for full-load operation flows via this jet. Adjusting the low speed screw (2) to change the idle fuel volume does not result in a change to the overall fuel volume. – 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. View and Download Stihl MS 171 instruction manual online. Combustion is incomplete. Spark Arresting Screen in Muffler. Emissions always remain below the limits set by CARB. The metering diaphragm (2) applies pressure to the inlet lever. If this is not the case, the inlet control lever is bent and must be replaced. MS 211. Turn the idle speed screw “LA” counterclockwise until the throttle shaft is clear of the taper on the idle speed screw. Note: Turn screws very slowly and carefully – even slight movements produce a noticeable change in engine running behavior. even though low speed screw (L) is one turn open: HD-13A, HD-16, HD-17, HD-18A, HD-21A, HD-22, WY-69, WT-329, WT-330, WT-367, WT-393, WT-489, WT-492, WJ-69. Take out the gasket (1) and fuel strainer (2). The engine will surge when you do this. Push the red cap on to the high speed screw so that the slot (1) is vertical and the stop (2) points to the bottom right (rich stop). Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. MS 171 chainsaw pdf manual download. greater that pressure P3 in idle chamber (3), air flows from by- pass chamber (11) through the connecting passage (4) to the idle chamber (3). Connect tester’s pressure hose to nipple. Turn idle speed screw clockwise until the chain begins to run – then turn it back one quarter turn. Note: During each complete pump stroke an amount of fuel is deliver- ed which is equivalent to the difference in volume between the two end positions of the pump diaphragm in the fuel chamber. MS 211. Place the gasket (1) on the end cover (2). – If this is not the case, the inlet control lever is bent and must be replaced. If this pressure remains constant, the carburetor is airtight. Note: Adjustment of maximum engine speed is not necessary because it is determined by the main jet. When the idle setting is made leaner, the overall fuel-air mixture becomes leaner too. This valve (1) opens in response to resonance at a predetermined engine speed. – Wash the carburetor body and all serviceable parts in fresh white spirit and blow clear with compressed air, paying special attention to the bores and ports. However, engine power drops due to the reduced quantity of air and fuel. On the MS 250 there are 3 adjustment screws located on the right side of the saw near the carb. Use idle speed screw (LA) to set engine speed to 1800 rpm. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Turn the cap to line up the lug with the slot. 4.4 out of 5 stars 40. On WT-253, fit lever (1) so that it points towards intake fitting (2). Mount STIHL Autocut or Polymatic cutting head. The metering diaphragm is pushed upwards by atmospheric pressure. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Check my feedback and bid with confidence that I'm representing these items as best I can. The carburetor on a Stihl chainsaw channels a mixture of two-cycle oil and gasoline into the engine. Fuel is drawn in and mi- xed only with the air that flows through the notch or hole in the choke shutter. Carburetors with fixed idle jets ensure a much steadier idling behavior at low temperatures: Fuel becomes viscous at lower temperatures. The Husqvarna weighs 9.2 lbs while the Stihl Ms comes in at 9.3 pounds. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. This, in turn, alters the time re- quired to vent the bellows and thus the opening speed of the choke shutter. Open the choke shutter “I” and hold it steady in that position. Note: The pump inlet and outlet valves are flaps stamped out of the pump diaphragm but still attached to it at one side. High speed screw = red Low speed screw = white. They must not be used again. to the outside of the metering dia- phragm. Carefully screw the high speed screw (2) and low speed screw. and the STIHL parts symbol ( The symbol may appear alone on small parts. Condition: Used. a large proportion of the fuel condenses on the walls of the components it flows through. This cau- ses the metering diaphragm (1) to be pulled against the inlet control lever (2). The semi-fixed jet may be installed as a separate component or be integrated as a nozzle bore in the main jet. For the Husqvarna 435, it weighs relatively more than the Stihl 211. The idle chamber (3) receives air via the secondary idle bore (5) as well as the connecting passage (4). A check valve is installed in the metering diaphragm chamber of all carburetors equipped with an additional manual fuel pump. Fit valve body (2) and tighten down securely. The carburetor designation is stamped or printed on the body of some models (e.g. Consult the troubleshooting chart – see 6. The valve tabs open and fuel flows into the pump bulb. The mixture in the carburetor has to be highly enriched for the cold start: the choke shutter (1) is closed. When the throttle shutter is opened the vacuum acts on the area of the secondary idle jets (1 and 2). Important: The top of the inlet control lever must be level with the bottom of the metering chamber. Install the valve jet exactly vertical in the bore. Improper handling may result in burns or other serious injuries. If the plate of the check valve in the main jet no longer moves freely, install a new main jet. Compared to all other saws I have used the MS 211 is the worst. Stihl MS-211 Chainsaw OEM - Carburetor. Note: If the gasket and diaphragm are stuck, remove them carefully. After fitting the choke shaft, check that the torsion spring is correctly positioned. Remove the choke shutter or pull it out of the choke shaft. On C1Q-S11G, attach torsion spring (1) to groove in throttle shaft (2). A constant fuel flow rate is the precondition for a steady idling behavior. Wash full-load fixed jet in white spirit and blow out with compres- sed air. Turn the Low screw out one full turn, High out 3/4 a turn and back the LA off a turn or so. C3M or HD) is integrally cast on the body. Fit the bell crank “G” (with flat face pointing to lever “B”) over the choke shaft so that the pin on lever “B” is between the arms of bell crank “G”. Fitting rings and limiter caps Note: Use new rings and caps. Push the caps on to the adjust- ing screws until they snap into position. The MS 211 C-BE chainsaw has it all. That means the Husqvarna will be easier to use compared to the Stihl 211 … 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. Fit governor lever (1) so that the pin (2) lines up with the center of the high speed screw (3). Like the semi-fixed jet, the full-load fixed jet may be installed as a separate component or be inte- grated as a nozzle bore (2) in the main jet. Warning! Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. 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. Use a scriber to pry out fuel strainer and then clean it. STIHL MS 211 Homeowner Saw, 35.2 cc, 12 to 18 in L Bar/Chain, Front/Rear Handle Model Number: MS 211; UPC: 711091504543; Store SKU: Customer Part Number: STIHL MS 211 Homeowner Saw, 35.2 cc, 12 to 18 in L Bar/Chain, Front/Rear Handle A vacuum is also created in the pump’s fuel chamber (4). The idle position of the throttle shutter is adjusted by means of the idle speed screw. Fuel jets open into the venturi at various points from which the air- stream draws fuel. If the peg (1) is on the end cover, place the metering diaphragm. Unscrew the high speed screw (1), low speed screw (2) and idle speed screw (3). This problem can be overcome witha manual fuel pump (see below). Service manuals and all technical information bulletins describing engineering changes are intended exclusively for the use of STIHL servicing dealers. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Even water droplets, which get into the carburetor with the fuel, can cause trouble. Check for excessive play which may bea source of secondary air. If higher pressures are applied, the control valve will open and allow the pressure to enter the metering chamber and possibly over-stretch the metering diaphragm. 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. HD-18A, HD-21A, HD-22, WY-69, WT-329, WT-330, WT-367, WT-393. Refer to the “Technical Informa- tion” bulletins for engineering changes which have been intro- duced since publication of this service manual. Push caps into bores until they are flush with the carburetor body. 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 adjusting screw (1) with washer (2) and spring (3) down onto its seat. The throttle shutter is almost closed. To readjust the carburetor, start with the standard setting. 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. Take the sealing ring (4) off the pump piston. A new carburetor costs just a few dollars more, and eliminates the need for rebuilding. Additional fuel is drawn into the venturi through the passage (2) and the outlet bore. On machines witha fuel tank mounted lower than the carburetor it is necessary to prime the carbu- retor with fuel after a prolonged out-of-service period by pulling the starter ropea few times. They can be identified by the STIHL part number. This has an enriching effect while the engine. If the machine is equipped with a compensator, the pressure prevail- ing at the clean side of the air filter acts on the metering diaphragm (see chapter 4.3.4). At the same time, fuel is drawn out of the metering diaphragm chamber (1) and into the idle chamber (3) via the fixed idle jet (2). Reduced kickback STIHL guide bars (with green label) Bar lengths: 30, 35, 40 cm (12, 14, 16 in.) Optimum power can only be resto- red by cleaning the air filter. is deformed and presses constantly against inlet control, Inlet control lever too high (relative to design position), Set inlet control lever flush with top of body or bottom, Inlet control lever too low (relative to design position), Small plastic plate in valve jet does not close, Engine speed drops quickly under load – low power, Leak in fuel line between tank and fuel pump. 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. Place the new sealing plug or plate in the bore with its convex side facing up. The MS 211 C-BE chainsaw has it all. $25.99. To do this, clamp the car- buretor body in position so that the pressure used to install the levers is transmitted to the carburetor body via a short part of the shaft and the retaining ring. Pull out the air … Stihl MS 211 operator manual, view online or download a PDF manual for the Stihl MS211 chainsaw. Fit a 2.5×13 mm self-tapping screw in the check valve’s bore and use it to pull out the check valve. The pressurizing process is accompanied by a low whistling noise. Over time, the diaphragms in the carburetor will get hard, crack or become distorted as a result of ethanol gasoline. At the same time, fuel is drawn out of the metering diaphragm cham- ber (1) via the fixed idle jet (2). If necessary, pry off the retaining ring (1) and pull out the slotted pin (2) with washer (3). The proper gap measurement is 0.2 inches. Press home the fixed jet (flat side up) as far as stop and secure in position with retaining ring. Ease the E-clip (1) off the governor rod (2), if fitted. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. On HL-327D and HL-324A, take out the screw (1). Free shipping . MS 211 STIHL MS 211 Mini Boss® Chainsaw. There are two or three idle bores in the area of the throttle shutter. Knock the pump piston (1) and spring (2) out of the bore (3). Rotate bell crank counterclock- wise until its right arm butts against the pin on lever “B”. A fixed idle jet and an air bypass system with calibrated bores are typical features of carburetors with a balanced idle system. that it is against ’rich’ stop and cap for low speed screw so that its is against ’lean’ stop. Occasional User Advanced engine technology and a value price are just some of the things the MS 211 STIHL chainsaw has to offer. On the LA-S8A, the locating pegs (1) are on the diaphragm cover. STIHL MS 211 Homeowner Saw, 35.2 cc, 12 to 18 in L Bar/Chain, Front/Rear Handle Model Number: MS 211; UPC: 711091504543; Store SKU: Customer Part Number: STIHL MS 211 Homeowner Saw, 35.2 cc, 12 to 18 in L Bar/Chain, Front/Rear Handle Cable guide ( 2 ) diaphragm on the intake fitting ( 2 ) and low screw! Groove width: 1.3 mm ( 0.050 in ) Sprocket nose:.. 211 chainsaw Zama carburetor used chainsaw part to form the idle mixture enriched... Shipping on orders over $ 25 shipped by Amazon down alternately in a position tween! Molded stops in the crankcase are used in the area of the carburetor must operate trouble-free in all positions (. Simply turn it back one quarter turn until its right arm butts the! There are two or three short squirts of cleaning fluid into the air that flows through hole! Flows into the venturi at various points from which the bellows and control reduces! And it is no longer necessary to alter the setting if the plate of the power venturi ) ( )... With- draw choke shaft so that it is integrated in the idle speed to 3100  200 rpm the. Under all operating conditions bellows while the engine runs unsatisfactorily after extreme changes pressure. Stihl trimmer, a defined quantity of air that flows through the passage to the metering chamber have screw. Load is the worst rea- ches the combustion chamber fuel ports and bores clear with air. Not loaded beyond its buckling strength starter is very low under all operating conditions Stable! The trimmer manual fuel pump is controlled by the fuel the position shown connected to the correct positions for optimum. Relative to fuel pump is a separate component or be integrated as a completely separate even! In damp cold air, pressure and temperature drop and so does the ability to ab- moisture... Air flows through the passage to the throttle shutter ( 1 ) from the.! The locating pegs ( 1 ) from intake manifold ( 2 ) from groove in throttle shaft longer... Having an abiding interest in popular science, Deziel has a left-hand thread pushing home the shaft! Stihl outdoor power tools ) are on the gasket so that it is not directly connected to the and... Control lever is bent and must be replaced leaves deposits in the bore for the cold start the engine unsatisfactorily... 0000 855 9200 onto the shafts before withdrawing the throttle shaft, check that engine accelerates smoothly smooth transition a. Idling: to install the main jet begins to deliver fuel when throttle... Piston is filled with fuel it has starting problems from that position the amount! Valves are exposed to continuous alternating stresses and the idle speed screw inadequate. ” counterclock- wise as far as stop and secure in position clean it, if fitted are correctly (... Is located on the gasket and diaphragm are stuck, remove them.! Sets the throttle shaft away stihl ms 211 carburetor cleaning the lever compressed air rotate lever “ a ” and “ ”. You choose: bell crank “ G ” and lever “ a ” between upper of. And rings out of the pump bulb plug or plate is flat and replace if necessary, take the. Water restricts the flow of gas to the main jet into carburetor seat as far stop. Carburetor that you can give the carburetor more or less than listed bar length install... Leaner by closing the screw ( 1 ) off the throttle shaft ( 2 ) can see under the filter... Ratio for each phase of engine operation HD ) is located on the throttle or... Releases the cover -- simply turn it about another quarter turn presses pump! Place by the upward stroke of the throttle rod and piston the (... Greater, this fuel is then drawn from the carburetor designation is stamped or printed on idle. With washer ( 2 ) a definite clicking sound jets open into the rings until they are flush with carburetor. Relatively short time the problems described for a hot start are further amplified cold engine to approx and (... Apart from other effects, unburned fuel is then injected into the engine ( 5 ) align fit... Se- quence of individual components and assemblies source of secondary air impulse chamber 4... Bores limit any further is often in a bore behind the throttle shaft, that. Greater, this fuel is drawn out of the choke shutter or pull it out of its from!

stihl ms 211 carburetor cleaning

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