Question about Husqvarna 28cc Gas Line Trimmer

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Engine runs in choke position but not in run position

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Your desctiption sounds like a plugged up carb. Many times, you can drop the float bowl and clean there, and not have to change anything else... I do prefer to remove the float, and inlet valve, flush and inpsect that....

Another thing that works sometimes is (with a helper for your unit) remove air filter, rev the unit as fast as it can (safely) and plug the intake with your palm, or something suitable, for a brief moment. Sometimes this can pull through some restrictions.... Sometimes you have to open the carb and clean it out. My thought it the main circuit is plugged.

Posted on Mar 11, 2011

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1 Answer

What is the running position for the choke lever on my Briggs Stratton 35 classic engin


on the oldie but goodie briggs engines it's easy to look right down the air intake collar while its running and see the choke plate , straight up is the run position

Aug 27, 2015 | Garden

2 Answers

I have an older craftsman snow blower 10 hp. It starts ok with full choke, runs ok half choke, backfires with no choke-run position.


It's too lean; not enough fuel mixed with the air. Look for the main mixture screw--it should be a large screw with a spring under it on the carburetor. Run the engine until it's warm.

With the engine running, turn the screw outward (lefty-loosey) about 1/8 turn slowly and see if it improves. Slowly turn the screw back and forth until it runs best with the choke completely off. Then set it 1/8 turn richer (turn screw outward 1/8 turn) than the best position.

Reason for doing this: Conditions change, even the barometric pressure. Small engines run okay if they are a little rich but not if they are a little lean.

Mar 03, 2015 | Garden

1 Answer

How do I start a weedeater fb25?


Press primer bulb 6 times
Move throttle lever to start position
Move choke lever to full choke position
Pull starter rope sharply until engine attempts to start, but no more than 5 pulls.
Move choke lever to half choke position. Pull starter rope sharply engine runs. If engine hasn't started after 5 pulls, repeat all steps above.
After warming up for 10 seconds, move choke lever to run position.

Manuallib.com has a manual for this model available for free download

Oct 20, 2014 | Weedeater Garden

1 Answer

Why does troybilt generator engine keeps shutting off when throttle is moved from choke to run position?


Give it a shot of starting fluid. If it runs initially, then most likely the jets on the carbureator are clogged. You should remove the carb and clean/rebuild it.

Sep 05, 2014 | Briggs Stratton Portable Generator 305cc...

1 Answer

Sym red devil feels sluggish


Instructions
    • 1 Locate the red button on the top of the handlebars. This is called the "kill switch." When you pull it up the engine can run; when you push it down, the engine will shut off immediately.
    • 2 Pull the kill switch up.
    • 3 Turn the key to the "on" position.
    • 4 Make certain the cord running from the key is attached to the steering column. This device acts in the same manner as the kill switch - the engine will run only when it is secured.
    • 5 Pull the start cord, which looks like an enlarged lawnmower pull-cord and is generally found on the right side of the machine.
    • 6 Listen to the engine - if it starts, let it get going slowly . If it "pops" but does not continue to run, try pulling the start cord a few more times. If you do not hear the engine turn over at all, proceed to the next step.
    • 7 Find the pull tab under the right side of the handlebars. This is called the choke - it often has a circle with a diagonal line through it. The choke helps to start an engine when the weather is very cold or the machine hasn't been used in a while. When using the choke, try leaving it on only long enough to hear the engine fire a couple times, then return it to the "off" position. A choke left on too long can flood the engine.
    • 8 Place the choke in the vertical position - this is called the half choke position. Pull the start cord several times. If the engine fires up, place the choke back down to its original position and let it slowly warm up. If the engine still has trouble starting, proceed to the next step.
    • 9 Pull the choke 180 degrees from its original position - this is called the full choke. Pull the start cord until the engine sputters a couple times.
    • 10 Replace the choke to the original off position and continue to pull the cord. The engine should fire up and settle into a steady hum, ready for fun in the snow.

Jan 15, 2013 | Motorcycles

1 Answer

Sym red devil feels sluggish


Instructions
    • 1 Locate the red button on the top of the handlebars. This is called the "kill switch." When you pull it up the engine can run; when you push it down, the engine will shut off immediately.
    • 2 Pull the kill switch up.
    • 3 Turn the key to the "on" position.
    • 4 Make certain the cord running from the key is attached to the steering column. This device acts in the same manner as the kill switch - the engine will run only when it is secured.
    • 5 Pull the start cord, which looks like an enlarged lawnmower pull-cord and is generally found on the right side of the machine.
    • 6 Listen to the engine - if it starts, let it get going slowly . If it "pops" but does not continue to run, try pulling the start cord a few more times. If you do not hear the engine turn over at all, proceed to the next step.
    • 7 Find the pull tab under the right side of the handlebars. This is called the choke - it often has a circle with a diagonal line through it. The choke helps to start an engine when the weather is very cold or the machine hasn't been used in a while. When using the choke, try leaving it on only long enough to hear the engine fire a couple times, then return it to the "off" position. A choke left on too long can flood the engine.
    • 8 Place the choke in the vertical position - this is called the half choke position. Pull the start cord several times. If the engine fires up, place the choke back down to its original position and let it slowly warm up. If the engine still has trouble starting, proceed to the next step.
    • 9 Pull the choke 180 degrees from its original position - this is called the full choke. Pull the start cord until the engine sputters a couple times.
    • 10 Replace the choke to the original off position and continue to pull the cord. The engine should fire up and settle into a steady hum, ready for fun in the snow.

Jan 15, 2013 | 2008 Sym Jet Red Devil 50

1 Answer

Lt1050 black smoke after 15 minutes


The black smoke and black spark plugs indicate that the engine is running very rich (ie too much fuel). This could be caused by the choke not opening fully after the engine starts and the fuel mixture is too rich OR the fuel mixture setting is opened too far.
Check the choke lever, make sure the choke is fully open when the choke is in the running position.
When the engine is running with the throttle is in the 3/4 rev position then adjust the fuel mixture to get the highest RPM.

Apr 19, 2012 | Cub Cadet Garden

1 Answer

Stalling out


Generally with two cycle engine as soon as the engine starts the choke needs to be moved to the off or open position. Some chokes have a middle position that lets the motor run until it is warm enough to move the choke into the open position. In other words weather it is a two or four cycle engine the choke is used only to start the engine. If you unit is newer and still does not run well with the choke in the open position, you may need to adjust the hi-speed circuit to a richer one.

Jul 13, 2009 | Troy Bilt Tb70ss Gas Trimmer

1 Answer

Cannot keep tiller running


Could a gas/oil mix been used by mistake. When you cleaned carb did you also clean dusty air filter?? Try leaveing off filter first and run. Are you sure you are in "choke position" when engines seems to be running ok,be sure to double check yourself here. If engine runs ecelleant in "choke" sounds like your in "Run" position and positioning is problem not performance.

Please rate. Thanks jj505

Mar 28, 2009 | Garden

1 Answer

Engine run @ half choke but will not run in run position


It's starving for fuel. What is it? Sounds like the jets are plugged in the carb. or possibly water in the gas. Remove carb., disassemble, clean and put back together. You should get a rebuild kit for it first so you have new gaskets, etc. when you reassemble. It's a little more complex than I can put in words for you here.

Also empty and clean fuel tank too and start with fresh, clean fuel.

Mar 11, 2009 | Homelite Mighty Lite Lawn Trimmer

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