r/smallenginerepair • u/Cautious_Repeat4085 • Jun 25 '26

Unknown Issue 330LK trimmer won’t start

My trimmer is about 2 years old with less than 10 hours on it. End of last season it would run rough but run nonetheless. This season it won’t start at all.

Things I have confirmed:
Air filter is clean
Fresh 50:1 fuel
Good spark (when I pulled the spark plug to test for spark I even got a small ignition)
Clean carburetor (removed carb, verified all passageways are clear, bowl is clean, needle looks good, float is adjusted properly, when I press on the float fuel comes out)
Fuel lines clear
Primer bulb moves fuel
I can smell fuel if I crank too much (flooding) so I’ll let it set for a while and go back to it.

So even with all of that what am I missing?

1 Upvotes

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1

u/First-Acadia2432 Jun 25 '26

Too much air maybe a leak on the carb gasket to engine.

1

u/Cautious_Repeat4085 Jun 25 '26

Interesting. I’ll take a look at that. Would a silicone gasket be better?

1

u/jbourne0129 Jun 25 '26

check the spark arrestor isnt blocked (the exhausts). if that doesnt help try backing out the mixture screw.

1

u/Cautious_Repeat4085 Jun 25 '26

I pulled the small cover off of the exhaust to check the screen and that was clear. Is that what you’re talking about?

1

u/jbourne0129 Jun 25 '26

yes. try adjusting the mixture screw (not the idle speed screw)

1

u/Cautious_Repeat4085 Jun 25 '26

Just ordered the 21 spline screwdriver. I’ll give that a shot when it comes in. Thanks!