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The 682 was introduced in Sept of 1979 and ran through the 1984 Production Year. The first 682's came with a KT-17 Series I motor.
This motor was used up through S/N #726124. With S/N 726125, they went to the KT-17 Series II Motor. The KT-17 had some lubrication issues and worked OK as long as you were on level ground. The KT-17 Series II had a revised lubrication system that provided pressuirzed lubrication to the crank journals where the Series I used the "splash" method. The Specification Number on the Kohler can also help you Identify the series. 24000-24299 were series I motors and 24300 & higher were series II motors. When repairing or replacing a KT-17, the series I motor is NLA and will be substituted to the series II. The KT-17 is a Fan Cooled Motor. It is imperative that the shrouds be in place especailly during warm weather operation. The only way I would run a KT-17 without shrouds, is in the winter time.
Replace shrouds can often be found on Ebay. Lastly, the Kohler motor built for IH did NOT have an Oil Filter. Oil filters appeared on the Magnum 18 series from Kohler and appeared in later model Cub Cadets. I hope this helps,
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