Garden

Experienced gardeners share their insights in answering this question :
Detail 3, items 18 and 19 if Dolmar.
http://charlotte.preferredpower.com/DOLMAR/Documents/Chain%20Saws%20with%20Petrol%20Engines/112,%20114,%20117,%20119,%20120,%20120s/995700061(1985-04).PDF
Looks to me like the open end connects to nothing. HTH
Lou

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Most commonly either the fuel is stale or mixed incorrectly or incorrect oil. Next is maintenance of the unit, air filter restricted, spark arrestor, carburetor adjustment. Improper use of the equipment not running at WOT (Wide Open Throttle) or overloading (Lugging) of the unit.
The fuel tank may build excessive pressure due to a blocked vent. This could cause fuel to spray on occupants or bystanders when opening the fuel cap, potentially causing injury. Additionally, if an ignition source was present, this could create a risk of fire, causing injury and/or damage to property.
Impulse lines connect the PIV valve to the manifold and transmitter. Their purpose – the same as with all process instrumentation components – is to convey the precise process conditions to the transmitter.
The vent line or EVAP tube the comes from the gas tank is typically routed to the intake manifold. The intake manifold is where the air is mixed with the fuel before it reaches the combustion chamber.
This can either be through the gas cap itself, or via some sort of breather tube. The latter is usually routed up higher than the tank, before exiting below it, in order to prevent spillage if the tank is overfilled, or possible siphoning.
STIHL currently recommends that you do not store or use fuel older than 60 days, and preferably no longer than 30 days, even with a stabilizer. Read more about storing your outdoor power equipment.
If your saw idles fine, and then bogs down when pressing the throttle, then adjust your `H` screw by unscrewing. This will increase the amount of fuel to the carburetor under load. If your saw idles fine, then runs lumpy with a lot of smoke when pressing the throttle, then adjust your `H` screw by screwing in.
Your tank has to breathe. In order to breathe, your tank must have a vent somewhere that will relieve both vacuum and pressure. Gasoline expands in volume as it warms up and shrinks in volume as it cools down. The fuel level of your tank changes throughout the day, even if you are not driving it.
It allows for the optimum intake of air as fuel is released from the tank, and expulsion of air as fuel is deposited into the tank (or expands within the tank).
Most chainsaws have two fuel lines – one that feeds fuel into the carburetor and a return tube that allows unused fuel to flow back into the chainsaw gas tank. The return tube may be slightly larger in diameter than the tubing that feeds the fuel, or both tubes may be the same size.
Small diameter tubes or pipes commonly called impulse lines are used to transmit the pressure signal from the process to the transmitter. In some applications, these impulse lines can become plugged with solids or frozen fluid in cold environments, effectively blocking the pressure signals (Figure 1).
Tank Vent – A device intended to provide pressure and/or vacuum relief for atmospheric or low pressure storage tanks. The set points of the vents may be provided by weight loading, spring loading or buckling pin. PRESSURE / VACUUM ACCUMULATION.
Tank vent valves are designed to direct vapors generated during the diurnal cycle. Vent lines from TVVs generally run to carbon canisters. Properly installed, TVVs help protect canisters from liquid fuel.
The vent that allows the air to escape is equipped with an alarm that whistles and lets the oil delivery driver know that air is leaving the tank as it should. The whistle may seem unnecessarily loud, but it is very important that it is audible from the delivery truck for obvious reasons.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Saw starts runs good for a while then quits – Poulan Pro Chain Saw 46cc 20"
ANSWER : Try this out. I have the same issue. When its acts like it wants to quit, crack open the fuel cap. The cap has a small breather in it and if that gets clogged it will starve fuel.

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Chain keeps falling off – Poulan 18" Chain Saw Replbar (small Saws)
ANSWER : Your chain is too loose. If you’re using an old chain, you might need to have a link taken out of it. You can find replacement chains for your saw at Hyperparts.com. Use the application lookup link at the top of the page with your model # to make sure you order the right chain.

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Where is the tank breather – Husqvarna 350 Rancher Chain Saw
ANSWER : The 350 tank breather is on the top r/h side of the fuel tank, if you look between the crankcase where the top hanle fixes you will see a white plug with a nipple on the top, this is the breather, you can pull it out with a pair of long nose pliers.

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Poulan 14″ chain saw will not start
ANSWER : Usually, the fuel filter gets gummed-up from leaving it in any kind of fuel for long periods of time. Fish it out of the tank and either clean it in spray-carburetor-cleaner or replace it. Check the condition of the fuel lines while you are at it. Proper storage is to drain the tank and run the engine until it stops. If still won’t run, the carburetor internals may need cleaning and re-kitting. Make sure the spark plug is firing correctly. Hope this helps!

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Dont know what type off oil to put in the bar and chain tank on the chainsaw
ANSWER : Hi and welcome to FixYa, I am Kelly

All Bar oils are SAE 30W non-detergent oil. Go down to the local auto parts supply and buy the cheapest SAE 30W you can find…. SAE 30W is SAE 30W regardless of what brand is on it and for bar oil it is not an issue.

Thanks for choosing FixYa,
Kelly

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I have a husqvarna 323L string trimmer. I stored it after running the tank & carb dry for about two years. I fueled it, then started it, & it ran for a minute then died like I turned the switch off. Since it would not restart, I found the fuel filter had broken off the hardened fuel line & it sucked gummy crap out of the tank & into the carb. Failing at cleaning the carb, I finally put a new carb on it & replaced the pump, hoses & filter. It has ran good till this year. I winterized it with stabilizer & left it with a full tank over the winter. The gas in the tank was gone when I got ready to use it this year. I filled the tank with premix, checked for leaks, then started it. It would run fine for about half a tank, start idling poorly (lean) then cutoff & refuse to restart till I refilled the tank. I finally found the tank had cracks & was letting pressure out of the tank & apparently this was causing the carb to lose it’s ability to siphon gas out of the tank. So I replaced the tank which came with new hoses & a filter, which I properly installed to the carb. It cranked right up, but when it runs a half tank, the carb quits sucking gas out of the tank. When I pump to prime the carb, it moves the fuel into the carb, but the pump never gets hard like it does when I prime the carb when the motor is cold. I have to keep refilling the tank, prime, & then it starts & runs until the tank gets about half empty. The new fuel filter is down in the gas tank properly, but It will not run after it shuts off until I refill the tank & prime. I’m baffled. New tank, new hoses, new filter, new carb, & I can find no leaks in the fuel system. It runs strong. The 323L is a two-stroke & it always cranks on the second pull from cold on a full tank. Any ideas?
ANSWER :

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Chain saw chain is loose
ANSWER : Loosen the side cover nuts, then turn the adjuster CW to bring the chain up to the lower edge of the bar, then check to see if the chain will move fairly easily by hand. Tighten the clamp nuts and recheck tension. If chain seems to get loose quickly again, it may not be sharpened correctly causing heat to build in the chain. You should see no reflection of light from the cutting edges if filed correctly and the saw should require very little pressure for it to cut rapidly. Hope this helps!

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I was using the saw as a chain saw last weekend to cut up an old tree stump when the chain came off. I don’t know how to access it to put it back on and don’t have a user manual. The saw belonged to my late father and I don’t know if he even kept the manual.
ANSWER : You will have to remove the cover on the side the chain bar goes into. There should be one or two nuts holding the cover on the side. The is also a chain tension adjuster you may have to loosen to put it back on. Make note of the direction of the teeth on the chain. It is an directional chain. The tension adjuster is usually a flat head screw on the front side right beside the chain bar.Unless it is a really old saw, manuals are available from most manufacturers for free download. See if you can locate a brand name and model number.

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