Removing Breaker Cover

TM 5-4240-501-14P IGNITION FLYWHEEL TYPE—INTERNAL BREAKER Removing Breaker Cover Care should be taken when removing breaker cover, to avoid damaging cover. If cover is bent or damaged it should be replaced to insure a proper dust seal. Breaker Points Breaker point gap on all models is .020" (0.5 mm). Breaker points should be checked for contact and for signs of burning or pitting. Points set too wide will advance spark timing and may cause kick back when starting. Points gapped too close retard spark timing and decrease engine power. Remove Breaker Points Breaker point assemblies of style shown in Fig. 13 are removed by removing condenser and armature wires from breaker points clip. Loosen adjusting lock screw and remove breaker point assembly. Breaker point assemblies of style shown in Fig. 14 are removed by loosening the screw holding the post. The condenser on these models also includes the breaker point. The condenser is removed by loosening the screw holding the condenser clamp. Fig. 13 - Breaker Point Assemblies Fig. 14 - Breaker Point Assemblies Check Breaker Point Plunger Hole Fig. 15 - Checking Breaker Plunger Hole If the breaker point plunger hole becomes worn excessively, oil will leak past the plunger and may get on the points, causing burning. To check, loosen breaker point mounting screw and move breaker points out of the way. Remove plunger. If the flat end of the 19055 plug gauge will enter the plunger hole for a distance of 1/4" (6.35 mm) or more, the hold should be rebushed: Fig. 15. Install Breaker Point Plunger Bushing To install the bushing, it is necessary that the breaker points, armature, crankshaft and starter be removed. Use reamer 19056, to ream out the old plunger hole. See Fig. 16. This should be done by hand. The reamer should be in alignment with the plunger hole. Drive the bushing 23513, with driver 19057 until the upper end of the bushing is flush with the top of the boss. Fig. 16. Finish ream the bushing with reamer 19058. All reaming chips or dirt must be removed. Fig. 16 - Installing Breaker Plunger Bushing 2 5