Suzuki outboard motors 1988 2003 repair manual., Page 160Get this manual
5-48 IGNITION AND ELECTRICAL SYSTEMS When the motor is operated, the pinion gear moves upward and meshes with the teeth on the flywheel ring gearWhen the powerhead starts, the pinion gear is driven faster than the shaft, and as result, it screws out of mesh with the flywheelA rubber cushion is built into the Bendix drive to absorb the shock when the pinion meshes with the flywheel ring gearThe parts of the drive must be properly assembled for efficient operationIf the drive is removed for cleaning, take care to assemble the parts as illustrated in the accompanying illustrations in this sectionIf the screw shaft assembly is reversed, it will strike the splines and the rubber cushion will not absorb the shockThe sound of the motor during cranking is good indication of whether the cranking motor is operating properly or notNaturally, temperature conditions will affect the speed at which the cranking motor is able to crank the engineThe speed of cranking cold engine will be much slower than when cranking warm engineAn experienced operator will learn to recognize the favorable sounds of the powerhead cranking under various conditionsTESTINGStep 3
See accompanying illustrations
1Using multimeter, see if there is any continuity between the commutator and armature coreThe tester will indicate infinite resistance if the insulation is in good condition2Using the tester, check for continuity between each pair adjacent commutator segmentIf discontinuity is noted at any part of the commutator, replace the whole sub-assembly of the armature3If the surface of the commutator is gummy or otherwise dirty, wipe it off with cloth dipped in keroseneIf the surface is coarse or in burnt, smooth it with sandpaperIf the surface is grooved deeply, it may be necessary to remove the grooved marks by turning the commutator in lathe; such turning is often successful in reconditioning the commutator if the extra stock necessary for removal by cutting is available without reducing its diameter to the limit Step 4