Question about Homelite Consumer Products 9.0 Amp, 14 In. Chainsaw

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Homelite d2850b chainsaw air-fuel adjustments. white adjustment on left red adjustment on right. how do i calibrate?. Alsoit just seems as though its getting too much gas. Tried to warm it up a bitt with a hallogen light (5 min.) and gas leaked out the bottom as though too much pressure had built up.

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If the fuel tank was completely full, I would expect fuel leakage from the tank vent--don't make a practice of overfilling. Give it a little breathing room for expansion. Check the air cleaner and muffler for plugging. White and red adjustments mean nothing to a color blind person. There should be an 'H' and 'L' cast into the plastic surface or on the carburetor body itself near the adjustments. Turn both screws CW to stops (lightly) and then back out each 1-1/2 turns CCW. Start the engine and allow to warm up. Pull the throttle full on, and adjust H CW until the engine starts to speed up but still 4-stroking. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. Release the throttle and adjust L CW until the engine runs fairly well, but allows the engine to 'follow the throttle'. Set the idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!

Posted on May 13, 2010


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I have an old Homelite XL chainsaw that still works but that could use some carburetor adjustment because it frequentlyshuts down between cuts. I do not have a manual and I did not see one listed. ...

The H jet needle should be set so that the engine will 4-stroke at full speed, but immediately 2-stroke when cutting. The L jet needle should be set so that the engine will 'follow the throttle', but idle fairly well. Adjust the idle speed screw so that the chain stops turning, but the engine will continue to run. Check the fuel lines for condition and the fuel filter, air cleaner, and muffler for plugging. Make sure the carburetor fasteners are tight. Hope this helps!

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Turn both screws CW to stops (lightly), then back out each CCW 1-1/2 turns. This should get the engine running if it will. If it does not, check the lower diaphragm on the carburetor for hardness or cracking. You appear to be running on prime only--the carburetor doesn't seem to be pumping in fresh fuel. You may need to do a carburetor clean and re-kit. Check the fuel line condition and the fuel filter in the tank for plugging. Make sure the muffler and air cleaner are not plugged. Once you get the engine to continue running, warm the engine up. Open the throttle and adjust the H needle CW--the engine should start to speed up, but still 4-stroking. The proper setting is 4-stroking, but immediately 2-stroke when cutting. Release the throttle and adjust L needle CW so that the engine runs fairly smoothly, yet will allow the engine to 'follow the throttle'. Set idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!

Apr 17, 2010 | Homelite Consumer Products 9.0 Amp, 14 In....

1 Answer

When the engine gets warm it starts to cut out when sawing, take it off the log and give the engine it seems to sound right, Husqvarna 435 16 in chainsaw

1. Clean the air filter.
2. Drain and refill the fuel reservoir with freshly mixed fuel/oil.

It sounds as though the fuel setting isn't quite right. Don't try to adjust it with a dirty air filter (to lean once cleaned) or stale fuel.
If it still acts up I'd take it to a good local chainsaw seller/mechanic. It needs to be warm before adjusting and if they don't make a cut after the adjustment they would never get my saw again. HTH

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I seem to be going through a lot of gas in a short period of time. I have 3 adjustment screws on my Homelite XL 10515A chainsaw. which one controls the fuel flow and which one the idle speed

Two of the screws are fuel related: H = high speed and L = slow speed. The third is idle speed and is a limit stop for the throttle lever. Turn both mixture screws in CW to stop (lightly), and back out CCW 1-1/2 turns each. Start with H needle after engine warm-up. Open the throttle full and adjust CW until you reach highest speed with 4-stroking, but smooths out when cutting lightly. Allow to idle, and adjust L needle CW for smooth idle, but rich enough to allow engine to follow the throttle. Adjust idle speed screw to allow the chain to stop turning. Make sure to clean the air cleaner before this procedure.

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- Control fuel level, min. 25% tank capacity. and off course use correct ratio of fuel/oil
- Check air filter is clean.
- Remove spark plug,dry it, clean it and adjust it, and replace it, if necessary.

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bear973 you must make sure that that in tank filter is seated in right position and not just floating around inside the tamk

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