Suzuki 2003-2007 DF60 DF70 Outboard Motors Service Manual, Page 228Get this manual
POWER TRIM AND TILT
PTT MOTOR INSPECTION Armature and Commutator 1Inspect the commutator surface for gum or dirtClean with #500 grit emery paper if necessaryMeasure the commutator outside diameter09900-20101: Vernier calipers Commutator outside diameter: Standard: 22.0 mm (0.87 in) Service limit: 21.0 mm (0.83 in) If the measurement exceeds the service limit, replace the armature2Measure the commutator undercut (depth) between the mica (insulator) and the segmentsCommutator undercut (depth): Standard: 1.6 1.9 mm (0.06 0.07 in) Service limit: 1.3 mm (0.05 in) If the measurement exceeds the service limit, cut the mica to the specified depthNOTE: Remove all particles of the mica and the metal using compressed airWear safety grasses when using compressed airCommutator undercut MICA