Stihl ms 390 fuel tank vent

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Stihl MS390 versus MS360, Worth Fixing the 390 up?

MasterMechNov 21, Boog and clemsonfor like this. Last edited: Nov 21, BoogNov 21, Boog likes this. I work on my hoard of everything. My wife calls me a hoarder. Its in my blood. But about half the time I have what I need. My friend can't understand it.

He has to go to lowes all the time. But he lives in the city and its five mins each way. Its a half hour for me one way to the store!!! Can't afford to run to town every time I need a screw or bolt. Or washer or. Since I was little I would always grab stuff out of the trash buy the side of the road and take it home and strip it of nuts, bolts, washers, springs, metal parts, wire, switches, etc.

Between about 10 and 40 I accumulated a heck of a lot of stuff. Now at 60 I have only put a small dent in it. That was just the drawer of screws under 1" that I dumped on the bench! No trouble finding some matching black, aggressively threaded ones I wanted.

When I run to Home Depot now, its usually so I can sneak over to the casino next door for a few minutes. The money I save on parts and stuff I blow over there! This is a MS I did a muff mod on. I just happen to like the look. I do simple ones also like cutting a slit in the side of the muffler and then prying it out.

I do not have any pics of the muff I did. I forgot to mention the slot for the spark arrester is still in place and so could still be used on national forest land.There seems to be a problem serving the request at this time.

Skip to main content. Filter 2. 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. Only 2 left. Results Pagination - Page 1 1 2 3 4 5 6 7 8 9 Got one to sell? Make an Offer. Stihl Medium Chain Saw. Stihl Chainsaw Bar Make Offer - Stihl Chainsaw Bar 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. They show the installed positions of the individual components and assemblies.

Stihl 029, 039 Service Manual

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.

stihl ms 390 fuel tank vent

All work with fuel must be performed outdoors only. Spilled fuel must be wiped away immediately. Fuel System Carburetor leakage test at gauge pressure: Operation of tank vent at gauge pressure: Fuel:. Ignition System Air gap between ignition module and fanwheel: Spark plug suppressed : Electrode gap:. Chain Lubrication Fully automatic, speed-controlled oil pump with rotary piston Oil delivery rate:.

DG screws are used in polymer and light metal components. These screws form a permanent thread when they are installed for the first time. They can be removed and installed as often as necessary without impairing the strength of the screwed assembly, providing the specified tightening torque is observed. For this reason it is essential to use a torque wrench.

stihl ms 390 fuel tank vent

Clutch springs stretched or fatigued Replace the clutch springs, or clutch if necessary Clutch spring hooks broken Loud noises. Lubricating oil on rewind spring becomes viscous at very low outside temperatures spring windings stick together.

Coat rewind spring with a standard solvent-based degreasant containing no chlorinated or halogenated hydrocarbons.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. 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. 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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stihl ms 390 fuel tank vent

Sign up! Restore password. Upload from disk.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. Medium to Light brown is Ideal. Also as to your question of Manf. 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. I also alway advise to use a fuel cleaner additive annually beginning of the season once alone with a Stabil product during prolonged storage.

I have usually used Lucas Top end and injector cleaner which cleans rings and piston crown of carbon and also cleans and lubricates injectors or throttle shafts and passages etc. Anyhow Thanx for the follow up note Happy Cutting Dude! Take the damn tank vent off. Bet this will fix most problems.

The vent on my MS has been causing me trouble for 3 years. I finally tore it apart and put some foam in it and got rid of the check valve feature. That was the problem. You might lose a few drops of gas but, so what. Other than that, it runs powerful great when you can get it started. I have been cussing this thing since I got it. I have a McCulloch that is 30 something and doesn't give me as much trouble.

This thread really contains some valuable information but one thing that wasn't mentioned was the spark plug. A number of years back my Stihl AV would start and run fine for about 30 seconds.

Took it to the shop. They told me they fixed it. It did the same thing.Free shipping. Please check your model and compare with the item picture before ordering. Any questions about this item,please contact us through eBay messages. All of your questions will be answered within 24 hours. We'll ship it out within 1 Business Day after payment verified. Free shipping by E-packet! Clicking "View order details" link on the listing,you will find package tracking information.

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Stihl Chainsaw - starts but won't run

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stihl ms 390 fuel tank vent

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Stihl Chainsaw - Gas/Fuel Tank Replacement - Carburetor Removal - How To Repair

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