Suzuki DF2.5 Service Manual page 90

Con rod end side clearance
Measure the clearance with the conrod installed on the crank pin
as shown in the figure.
09900-20803: Thickness gauge
Conrod side clearance:
Standard: 0.20-0.70 mm (0.008- 0.028 in)
Service limit: 1.00 mm (0.039
If the measurement exceeds the service replace the con-
rod assembly crankshaft.
Conrod end
Standard: 17.50-17.80 mm (0.689- 0.701
Crank
Standard: 18.00-18.20 mm (0.709- 7
Crank
Inspect the crank for uneven wear or damage. Measure the
crank outside diameter for out-of-round or taper using the
micrometer.
Out-of-round: A - B
Taper: a- b
1.' 0 0h
09900-20205: Micrometer
Crank pin outside diameter difference
(Out-of-round and Taper):
Service limit: 0.010 mm (0.0004 in)
If the out-of-round or the taper is exceeds the service limit,
replace the crankshaft.
Crank outside diameter:
Standard: 18.990-19.000 mm (0.7476- 0.7480
POWER UNIT 6·27