Flywheel Inspection; Crankshaft/Piston/Cylinder; Block Inspection - TOHATSU BFT115A Service Manual

CYLINDER BLOCK

FLYWHEEL INSPECTION

Inspect the ring gear (1) of the flywheel (2) for wear or
damage.
If it is worn or damaged, inspect the starter motor pinion
gear (page 9-15).

CRANKSHAFT/PISTON/CYLINDER

BLOCK INSPECTION

PISTON SKIRT O.D.
Check the piston outer surface for damage (scores,
scratches, etc.), warpage and cracks.
Note the identification code (1) on the piston top.
Measure and record the piston O.D. (2) at a point 13
mm (0.5 in) from the bottom, and 90° to the piston pin
bore.
IDENTIFICATION CODE: Not marked (PISTON A)
STANDARD:
86.980 – 86.990 mm (3.4244 – 3.4248 in)
SERVICE LIMIT:
86.930 mm (3.4224 in)
IDENTIFICATION CODE: B mark (PISTON B)
STANDARD:
86.970 – 86.980 mm (3.4240 – 3.4244 in)
SERVICE LIMIT:
86.920 mm (3.4220 in)
Replace the piston if the measurement is less than the
service limit (page 15-15).
15-32
(1)
13 mm
(0.5 in)
90°
13 mm
(0.5 in)
(2)
(1)
(2)