1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 145Get this manual
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PTT MOTOR
2 Insp ect: nt ercut bstructio Cle nNOTE: Re all presse airm etal articles ith co m-
3M asure: utator dia eter ut of sp ecificatio Re placeCommutator diameter limit: 15.5