CYLINDERSChecking Cam Gear BearingREPLACING PTO BEARINGAluminum Cylinder EnginesThe sump or crankcase cover bearing can be repaired inthe same manner as the magneto bearing. However,one bearing should be completely repaired beforestarting the other bearing. After the bearings arefinished, press in the new oil seals.NOTE: Model 8B-HA, 80590, 81590, 82590,80790, 81790, 82990, 92590, 92990,110990, 111990.The magneto bearing can be replaced asabove; if the sump bearing is worn, thesump must be replaced. No tools areavailable for replacing the sump bearing.REPLACING OIL SEALThe oil seal is assembled with the sharp edge of theleather or rubber toward the inside of the engine.Lubricate inside diameter of oil seals with "Lubriplate," orequivalent, before assembling engines.Most oil seals are pressed in, flush with the hub.However, models 60000, 80000, 100000 and 130000using a ball bearing with mounting flange have the sealpressed 3/16" below crankcase mounting flange. Fig.13.Fig. 13 - Replacing Oil SealCHECKING CAM GEAR BEARINGSCheck cam gear bushing using 19164 plug gauge asshown, Fig. 14. If 1/4" or more of’ gauge enters bearingbore, bearing is worn beyond reject and the cylinder,sump or crankcase cover must be replaced.NOTE: On Model Series 111200, 111900, plug gauge19164 is used on the sump or crankcase cover cam gearbearing bore. Reject size of the cylinder cam bearing is.443 or larger.Fig. 14 - Checking Cam Gear Bearing7
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