Suzuki Engine 2002 GRAND VITARA SQ420 Service Manual page 476

Main bearing clearance
Check clearance by using gaging plastic according to following
procedure.
1) Remove crankcase.
2) Clean bearings and main journals.
3) Place a piece of gaging plastic (1) to full width of bearing
(parallel to crankshaft) on journal, avoiding oil hole.
4) Install crankcase (1) to cylinder block.
Tighten crankcase bolts, gradually as follows.
a) Tighten all bolts to 42 N·m (4.2 kg-m, 30.5 lb-ft) according
to numerical order in figure.
b) Loosen all bolts until tightening torque is reduced to 0 in
reverse order of tightening.
c) In the same manner as in Step a), tighten them to 42 N·m
(4.2 kg-m, 30.5 lb-ft).
d) In the same manner as in Step a) again, tighten them to
specified torque.
NOTE:
Tighten 10 mm (0.394 in.) thread diameter bolts first (fol-
lowing the order shown in figure) then tighten 8 mm
(0.315 in.) thread diameter bolts.
Tightening torque
Lower crankcase bolt (10 mm (0.394 in.) thread diameter)
(a) : 60 N·m (6.0 kg-m, 43.5 lb-ft)
Lower crankcase bolt (8 mm (0.315 in.) thread diameter)
(b) : 27 N·m (2.7 kg-m, 19.5 lb-ft)
NOTE:
Do not rotate crankshaft while gaging plastic is installed.
2. Bolt (10 mm (0.394 in.) thread
diameter)
3. Bolt (8 mm (0.315 in.) thread diam-
eter)
ENGINE MECHANICAL (H25 ENGINE) 6A2-101
4. Long bolt (8 mm (0.315 in.) thread diam-
eter)