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The 1982 oil tank is the last year tank with a drain plug. Future year tanks had a drain hose plugged off elsewhere.
It had a different, 2-piece chain guard so you could remove the front part to get at the drain plug. ¹⁾

Oil tank (62475-83 ) was used from 1983-1993. The tank is painted black with a chrome cover.
There are four hose fittings with the forth being a drain hose that runs to the left side of the bike to a welded nipple under the battery tray.
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