Intake and Exhaust Valves/Intake and Exhaust Valves 9. Remove exhaust and intake valves. M36266 -UN-29JAN90 M98,2015K,10 -19-08OCT85 10. Clean carbon from valve face, head, and stem using a wire brush. 11. Remove scratches from valve stems using steel wool or crocus cloth. 12. Inspect valve for damage, corrosion, pitting, or burned face. M35307 -UN-29AUG88 13. Check valve for out-of-round, bent or warped condition using a valve inspection center. CTM2 (19APR90) 15-6 16, 18, 20 & 24HP Onan Engines M98,2015K,11 -19-08OCT85 AllTractorManuals.com 130495 6. Remove parts (A—F) if equipped and inspect for wear or damage.
A—Spring B—Washer C—Valve -UN-29JAN90 D—Gasket E—Breather Base F—Gasket M36264 M98,2015K,8 -19-08OCT85 15 6 7. Close oil drain hole with a shop towel to prevent retainers from falling into gear case. IMPORTANT: Identify valve assembly during removal so they can be installed in original ports. -UN-29JAN90 8. Compress valve springs using a valve spring compressor to remove retainers. Release spring pressure and remove compressor. M36265 M98,2015K,9 -19-11NOV85