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Hello to all,

I purchased a 89 js550 yesterday. I was told it just needed a new battery and it will run. So I purchased a new battery and fully charged it and nothing. I am very mechanical and took apart the top end and carb. Both are fine. It is trying to start. I have a spark, compression, new fully charged battery, and brand new fuel. Fuel is making it into the engine. Only thing I see suspicious is dry plugs. When i first go to start it turns over fast and gets slower and slower until it stops turning over and all that i hear is clicking at the starter. Kinda like the battery is dead. But then I come back an hour later and it turns over fast again but slowly stops. I have tried carb cleaner in the top end and carb. The battery is fully connected. Whats up? I suspect I need a new starter. It turns over until it just clicks. What do you think?
 

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try priming it right in the carb and if it runs then check your fuel filter and clean the carbs making sure you poke all the little holes out with a small wire (unbraiding a bike cable and using the strands works good) if that does not work, then there may be an issue with your crank seals. one other thing i do just to make sure that the battery is good because i have had "new" batteries that where accually 4 years old. try boosting it with your car just so you an be sure its getting all the power it needs, I have seen some batteries that have good votage when they are sitting but the voltage drops to like 6 or 7 once you put load on it. hope this helps ya, good luck!
 
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