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Small Engines (Lawn Mowers, etc.)/carb setting
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Question
Leaf blower; Sears 25cc; Model 358.797550 with
Zima carb.
I can't start the engine. Carb adjusting screws
have been changed and limiter caps removed.
Can you advise me what the initial settings high and low jet should be to start the engine.
I have tried with both 1 1/2 turns open without success. I gave up because I didn't have any idea if it was even close.
Previously the engine was stalling. Problem traced to clogged spark screen.
Can't start engine after carb adjustment was fooled with.
Thanks!
Hello Don:
When you Set the Air Mixture Screws to 1 1/2 from Snug. You Hold the Throttle Full Open to Start the Blower. Then Set the High Air Mixture Screw so the Engine is Reving Properly. Then Set the Low Air Mixture Screw so there is no Hesitation when Throttling from Idle to Full Throttle. Then Set the Idle if Required. Hope this Helps. I am here if you Require more Asistance. Let me know what Happens, Please. Thanks.
Good Luck
Respectfully
John
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Answers by Expert:
John C. Bridgers Sr.
Expertise
Small Engine Service Center Co-Owner - ATVs, Mowers, Trimmers, Snow throwers, and Many Other Small Engine Operated Equipment. I can answer questions pertaining to Most Small Engines (Air and Water Cooled) and their Associated Equipment as well as Lawn and Garden Equipment, e.g. riders, tillers, trimmers, cement mixers, chainsaws, etc. I have been repairing small engines for 34 years. Briggs & Stratton, Tecumseh, Kohler, Lawn Boy, Stihl, Poulan, Mac, and Honda; to name a few.
Experience
I have been repairing small engines for 34 years. Briggs & Stratton, Tecumseh, Kohler, Lawn Boy, Stihl, Poulan, Mac, and Honda; to name a few.
Education/Credentials
Technical College for Gasoline and Diesel Engines. This was a Full Course on Complete Dis-assembly and Repair of ALL Components pertaining to Engines, Transmissions, Rear Ends, Electrical. I Found the Small Engines to be Interesting because they are Small and Simple.
Past/Present Clients
I have worked on small air/water cooled engines for 34 Years. I performed warranty work for Lowes of Wilson and other retailers in the area. I Own a Yard Maintenance and Certified Small Engine Repair Service Center.
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