Bought a 1983 GPZ750 end of last season. Runs good started Friday night easy. But.....when I turn the key on I hear a loud hum under the side cover. Sounds like a fuel pump loud. Have not had a chance to look under yet, prolly be Friday before I can look.
Hints what to check out?
1983 GPZ750
1977 KZ1000LTD
1978 Z1R
1981 GPz1100 KZ1100-B1
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