1998 Yamaha 25J, 30D, 25X, 30X outboards Factory Service Manual, Page 75Get this manual
INSPECTION
Water temperature Below 48C (118F) Above 52C (126F) Valve lift mm
Minimum mm (0.12 in)
If th alv nin and or te erature and alv e-lift are ot ithin th sp ecificatio ns, re place th th er ostatG 65000-0
CRANK MAIN BEARING
Cleaning 1U sin soft brush and solv nt, th oro hly cle th arin gDry it ith air, and sp arin gly lu bricate it ith o-cycle utb ard otor oil
CAUTION: