Stihl ms 390 fuel tank vent

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Stihl ms 390 fuel tank vent

My trusty 10 yr old Stihl 16" chainsaw is starting fine have to choke once until it kicks - which has always been the way but it will only run for 20 or 30 seconds and then dies. Re-chocking once until it kicks gets it running again for another seconds. This pattern continues to repeat itself even after the saw is well warmed up. I'll get deeper into the diagnosis this weekend, but thought in the meantime I'd ask for any advice and ideas I fished out the fuel filter and it looks clean and I can suck gas through it.

The fuel line look OK. When I reassembled everything and topped up the gas and restared the engine it would still no pun intended only run, after starting with the choke, for 30 seconds then die as though it was running out of gas. Restarting with the choke would allow another 30 seconds on full speed operation You certainly seem to have a fuel restriction problemsince it intially starts. Ensure to remove the jets and gentley use a small tag wire to clean the orifice along with carb cleaner and compressed air.

Secondly use 2 ounces of fuel cleaner within fresh fuel and let it sit a half hour then attempt restart using choke to keep unit running until cleaner helps remove residue from the carb circuits. All the Best.

Thanks ewalk! I am still wondering why the setting instructions in the owners manuel and on the fuel filter cover are incorrect??? Great Leo! Just a note of further info. The Idle Speed once warmed up so that chain is just tring to rotatethis ensures a good Cold idle without stalling. Plug checks are what I always do to identify the state of condition of any engine.

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Medium to Light brown is Ideal. Also as to your question of Manf.

How to Replace a Gas Tank on a Stihl Chain Saw

Recommended settings they are usually correctsometimes over time restrictions dirt gum or wear of seats and needles or elevation changes barometric pressure conditions will require different settings. So don't sweat it. Also if you get bored keep and eye on your fuel inlet prefilter screen within the carb and under the diaphram it usually is the secondary filter which catchs any minute particles that the inline fuel tank filter may miss.This service manual contains detailed descriptions of all the typical repair and servicing procedures for this power tool.

As the design concept of models MSMS and MS is almost identical, the descriptions and servicing procedures in this manual generally apply to all three models. Differences are described in detail. The special tools mentioned in the descriptions are listed in chapter "Special Servicing Tools" of this manual.

Symbols are included in the text and pictures for greater clarity. The meanings are as follows:. You should make use of the illustrated parts lists while carrying out repair work.

stihl ms 390 fuel tank vent

They show the installed positions of the individual components and assemblies. Refer to the latest edition of the relevant parts list to check the part numbers of any replacement parts.

A fault on the machine may have several causes. Technical information bulletins also supplement the parts list until an updated edition is issued. Servicing and repairs are made considerably easier if the clamp 1 is used to mount the machine on assembly stand 2 so that one clamp screw engages the outer 10 mm hole 3 in the assembly stand. To service the underside of the machine, turn it upside down and mount it so that one clamp screw engages the inner 10 mm hole in the assembly stand.

Pointer short arrow Direction of movement long arrow b 4. Service manuals and technical information bulletins are intended exclusively for the use of properly equipped repair shops.

They must not be passed to third parties. Note: Pull the hand guard back against the front handle for this purpose. If the engine is started up in the course of repairs or maintenance work, observe all local and countryspecific safety regulations as well as the safety precautions and warnings in the instruction manual.

Gasoline is an extremely flammable fuel and can be explosive in certain conditions. Improper handling may result in burns or other serious injuries. Do not bring any fire, flame, spark or other source of heat near the fuel. All work with fuel must be performed outdoors only.Free shipping.

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stihl ms 390 fuel tank vent

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Hom improvement Store. Haishine GardenTool Store. China Machining Centers Parts Co. Homegarden buying Store. Wendy Homes Store. ComeOn Beautiful Life Store. ST Decor Store. TO-HO Store. Woolife House Store. Quality--Life Store.Quick Links. STIHL Table of Contents. Troubleshooting Troubleshooting Charts 7 Chainsaw Stihl User Manual 52 pages. They show the the STIHL parts symbol The installed positions of the individual symbol may appear alone on small components and assemblies.

Microfilmed parts list are always more up to date than printed lists. When screwed in for the first time, DG screws form a permanent thread in the parts concerned. They can be released and retightened as often as necessary without affecting the strength of the screwed assembly. The high voltages which occur can cause serious or fatal accidents! Spark plug terminal firmly seated on spark plug? Remove spark plug. Page Chain Lubrication STIHLChain Lubrication Important: In the event of trouble with the chain lubrication system, always investigate the other possible sources of faults before disassembling the oil pump.

Condition Cause Remedy Carburetor floods; Inlet needle not sealing.

Stihl 029, 039 Service Manual

Remove and clean or replace engine stalls Foreign matter in valve seat or inlet needle, cone damaged clean fuel tank, pickup body and It is not necessary to disassemble Page Parts Sooted or carbonized spark plug: - Use brass wire brush to clean the spark plug and then blow it clear STIHL and chain saws are with compressed air.

Page 38 STIHLWarning: Do not touch any live Checking the spark plug: Note: Chafed insulation on the ignition parts - contact with high voltage lead or short circuit wire will cause a Accurate checking of the spark plug can cause serious or fatal short-circuit to ground.

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Page 5. Page 40 STIHLTop: Ignition module mounting screws Top: Removing lead retainer Bottom: Pulling the unscrewed ignition lead Bottom: Setting gauge fitted between out of ignition module Setting gauge flywheel and ignition module Important: Secure ground wire with upper screw and fit a washer on the lower screw.

If you find any damage e. Page Routine Maintenance 5 cm 2 - 3 in Lubricate the rewind spring and and hold the rope rotor steady.

Page 46 Fit the rotor on the starter post so that the inner spring loop slides into the lug on the rotor. Page 67 STIHLIf the saw is used at high altitudes Chain runs while engine is idling Corrections to high speed adjusting Turn the idle speed adjusting screw mountains or near sea level: screw: LA counterclockwise until the chain The setting of the high speed adjusting A slight correction may be necessary.

Automatic Choke Page Adjust carburetor - see Application Locking strip Blocking the crankshaft Clamping strap Compressing piston rings Puller Removing oil seals - Jaws No. Oil seals, oil pump drive, chain Lubricating grease sprocket bearing Throttle and choke shutter High-strength and fastening screws, threadlocking Loctite sealing plate and plug Print page 1 Print document 83 pages.

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Cancel Delete.The gas tank in a Stihl chain saw is surrounded by other parts, so you must disassemble the saw to gain access to replace the tank. Fortunately, disassembly, tank replacement and reassembly only require basic tools. Drain the fuel tank completely. Rotate the twist lock retaining screw on the carburetor box cover counterclockwise by hand. Lift the box to gain access to the air filter assembly and carburetor.

stihl ms 390 fuel tank vent

Unscrew the two slotted air filter retaining nuts and remove the filter. Unclip the choke and throttle linkage rods from the carburetor choke and throttle plastic linkages. Pry the carburetor adjusting screws' rubber grommet from the right side carburetor body. Pull the fuel hose free from the inlet elbow fitting by hand. Unscrew the two retaining nuts from the carburetor mounting studs.

Slide the carburetor free from the studs and engine intake manifold box. Unscrew the top engine cylinder shroud retaining screw, disconnect the spark plug wire and remove the engine cylinder shroud.

Slide the carburetor gasket from the mounting studs. Pull the carburetor sleeve from the center intake manifold box opening. Pull the short circuit and ground wire connectors from the rear handle stop switch contact springs. Lay the saw on the right side with the ignition facing up.

Pry the rear annular buffer plug from the engine chassis. Unscrew the buffer retaining screw. Flip the saw on its bottom. Remove the chain sprocket cover from the chassis. Unscrew the retaining nuts from the bar studs with a socket wrench; remove the cover from the chassis. Pull the cutting chain from around the chain bar, chain sprocket and off the engine chassis. Unscrew the chain tensioner plate retaining screw.

Slide the tensioner plate next to the sprocket from the chassis. Unscrew the chain catcher retaining screw and remove the catcher. Lay the saw on the left side. Pry the annular buffer plugs from the engine chassis with a flat-head screwdriver. Unscrew the front and rear chain side annular buffer retaining screws.

Pull the ground wire grommet and ground circuit wires from the left side chassis with needle-nosed pliers. Pull the fuel tank forward while pushing the intake manifold sealing flange from the intake manifold opening; separate the intake manifold and engine cylinder. Lift the intake manifold from the top of the tank. Pry the rubber fuel tank buffer with a flat-head screwdriver. Slide the old fuel tank free from the bottom of the chassis.

Pull the intake manifold rubber flange from the tank housing. Push the intake manifold rubber flange through the fuel tank intake opening on the new tank. Insert the tank down into the chassis; push the tank buffer onto the inside engine chassis.

Stihl Fuel Tank Vent Fits Ms171 Ms181 Ms200 Ms290 Ms310 Ms390 Ms250 Ms192 00003505802 New Oem

Push the tank forward into the chassis while simultaneously pushing the rubber flange into the engine cylinder. Wrap a 6- to 8-inch-long string around the intake manifold rubber flange groove.There seems to be a problem serving the request at this time. Skip to main content. Filter 2.

Stihl MS390 versus MS360, Worth Fixing the 390 up?

Hot This Week. Stihl MS AV complete fuel gas tank replaces Stihl MS tank housing replaces All Auction Buy It Now. Sort: Best Match. Best Match. View: Gallery View. List View. Free shipping. Stihl MS Chainsaw 4. Only 3 left. Only 1 left! See similar items.

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stihl ms 390 fuel tank vent

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