New 660 - Yamaha Raptor Forum
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post #1 of 2 (permalink) Old 08-01-2018, 07:58 PM Thread Starter
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Join Date: Aug 2018
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New 660

I’m kind of new to the whole raptor scene bought me a 660 last weekend, anyways I bought it and the battery had been froze and rode right after froze so It exploded and what not and I ordered a new battery and oil but while I was riding it it was starting to cut back and like lose RPMs and wouldn’t accelerate. just curious as to what could be wrong
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post #2 of 2 (permalink) Old 08-02-2018, 04:28 PM
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660 carbs will gum up if left without using a fuel stabilizer. In most cases the carbs need to be pulled and rebuilt. When removed, count the number of turns for idle and fuel screws so they can go back the same. Don't mix jets or parts parts as some are different. Run a small copper speaker wire thru all orifices and blow with cleaner or compressed air. If parts need replacement, use genuine Mikuni parts. Stay away from Chinese/Taiwan clone parts.


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