I think I successfully tuned my first carburetor

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Fried Chicken

ArboristSite Operative
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Oct 6, 2024
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Have an Echo PB-251 that's my workhorse leafblower. Got it on a deal; broken: flywheel locking nut comes loose. Loctite red solves that. Fantastic thing, always started reliably first time, quiet, has a cat that I like (no stink is genuinely nice).

Recently just stopped running right. Did the thing: filter (original), spark plug (original), gas (like 1 year old lol), still doesn't start/run right. Ok, go deeper: check spark, is fine. Go deeper: take it apart and check if the flywheel came loose. It didn't.

Head scratching, inspecting, poking, service-manualing... See the spark plug is consistently wet and unit flooded.

Service manual on tuning the carburetor has some insane and stupid procedure:
Screen Shot 2025-02-09 at 3.59.53 PM.png

**** it, time to wing it. Grab my mini flathead: tune the idle jet just slightly rich of peak (where it's 4-stroking). Tune the high jet slightly rich too... did the leaves.... smelled some stink out of the exhaust, and don't want to fry the cat by running it rich, so I bring it slightly learn (still rich of peak).

I think she's tuned!

This would be the first time I succeeded in tuning a carburetor. Starts first pull. Hopefully it doesn't explode down the road.
 

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