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Old 11-09-2014, 09:34 PM   #1
wheelbender6   wheelbender6 is offline
 
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I'd start with a basic tune up and carb cleaning. probably a GY6. Post pics.
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Old 11-14-2014, 11:31 PM   #2
Pbobes   Pbobes is offline
 
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Tune up complete

Ok...so I completed a tune up. Cleaned the carb, changed oil and gear oil, new battery, and adjusted the valves. Runs a lot better.

Still have one issue. When throttling, when I get between 3000 and 4000 rpm, it sputters, bogs, and backfires. Once I'm over 4000, runs like a charm.

What's next?
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Old 11-15-2014, 06:07 AM   #3
kz1000st   kz1000st is offline
 
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Either a vacuum leak or the idle mixture need adjusting. The idle mixture screw is on the left side up on the carburetor. Screw it all the way down and then back it out two and a half turns.
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