Suzuki DF 25 Service Manual page 168

(5) Assemble crankcase to cylinder.
(6) Apply eingine oil crankcase bolts.
Tighten crankcase bolts in three (3) steps following the or-
der indicated below.
Crankcase:
1st step 8 mm
10 mm
2nd step 8 mm
10 mm
Final step 8 mm
10 mm
NOTE:
Crankcase must be torqued to specification order to assure
proper compression of Plastigauge and accurate reading of
clearance.
(7) Remove crankcase form cylinder.
(8) Using scale on Plastigauge envelope, measure Plastigauge
width at its widest point.
Crankshaft journal oil clearance
Standard : 0.020 – 0.040 mm (0.0008 – 0.0016 in.)
Service limit : 0.065 mm (0.0026 in.)
If measurement exceeds service limit, replace crankshaft main
bearing.
NOTE:
For bearing replacement, see the "SELECTION OF MAIN BEAR-
ING" section on page 7-52.
5 N . m (0.5 kg-m, 3.5 lb.-ft.)
11 N . m (1.1 kg-m, 8.0 lb.-ft.)
20 N . m (2.0 kg-m, 14.5 lb.-ft.)
43 N . m (4.3 kg-m, 31.0 lb.-ft.)
25 N . m (2.5 kg-m, 18.0 lb.-ft.)
53 N . m (5.3 kg-m, 38.5 lb.-ft.)
POWER UNIT 7-51
Tightening order
Scale
Plastigauge