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FJR Motorcycle Forums
Technical & Mechanical Problems
Battery
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<blockquote data-quote="RossKean" data-source="post: 1451794" data-attributes="member: 19880"><p>I agree that 80 amps is way too high but wouldn't be astonished to see 40 amps. Unloaded, even 25 is too high but turning over a cold engine, I might expect a bit more than that. (80 tells me that the starter is definitely FUBAR but perhaps I should use a lower number 50 to 60?...) I have heard reports of over 100 amp draw!</p><p></p><p>A Yuasa YT14B-BS is the standard replacement. It is a 12 ampere-hour battery rated for 210 CCA so it should be able to supply 80 amps for a time without falling on its face - assuming it is in decent condition. This is why a new battery sometimes provides a temporary "fix" for a bad starter.</p><p></p><p>From what I have seen from failed FJR starters, the culprit is often the seal which allows oil to get in and mess up the brushes and commutator. Haven't heard of a dry bearing problem but that certainly a possible point of failure.</p></blockquote><p></p>
[QUOTE="RossKean, post: 1451794, member: 19880"] I agree that 80 amps is way too high but wouldn't be astonished to see 40 amps. Unloaded, even 25 is too high but turning over a cold engine, I might expect a bit more than that. (80 tells me that the starter is definitely FUBAR but perhaps I should use a lower number 50 to 60?...) I have heard reports of over 100 amp draw! A Yuasa YT14B-BS is the standard replacement. It is a 12 ampere-hour battery rated for 210 CCA so it should be able to supply 80 amps for a time without falling on its face - assuming it is in decent condition. This is why a new battery sometimes provides a temporary "fix" for a bad starter. From what I have seen from failed FJR starters, the culprit is often the seal which allows oil to get in and mess up the brushes and commutator. Haven't heard of a dry bearing problem but that certainly a possible point of failure. [/QUOTE]
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Technical & Mechanical Problems
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