Suzuki SQ416 Service Manual page 52
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Also See for SQ416:
- Service manual (118 pages) ,
- Owner's manual (266 pages) ,
- Service manual (731 pages)
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1. Upper half of bearing
2. Oil groove
4, (b)
1. Lower crankcase
2. Bolt (10 mm thread diameter)
3. Bolt (8 mm thread diameter)
4. Long bolt (8 mm thread diameter)
Main Bearings
General information
D Service main bearings are available in standard size and
0.25 mm (0.0098 in.) undersize, and each of them has 5 kinds of
bearings differing in tolerance.
D Upper half of bearing has oil groove as shown in figure. Install this
half with oil groove toward cylinder block.
D Lower half of bearing does not have oil groove.
Inspect
Check bearings for pitting, scratches, wear or damage.
If any malcondition is found, replace both upper and lower halves.
Never replace either half without replacing the other half.
Main bearing clearance
Check clearance by using gaging plastic according to following pro-
cedure.
1) Remove crankcase.
2) Clean bearings and main journals.
3) Place a piece of gaging plastic to full width of bearing (parallel
to crankshaft) on journal, avoiding oil hole.
4) Install crankcase to cylinder block.
2, (a)
Tighten crankcase bolts, following sequence in figure. Tighten
crankcase bolts to specified torque.
NOTE:
Tighten 10 mm thread diameter bolts first (following the or-
der shown in figure) then tighten 8 mm thread diameter
bolts.
Tightening Torque
(a): 60 N
3, (b)
(b): 27 N
NOTE:
Do not rotate crankshaft while gaging plastic is installed.
ENGINE MECHANICAL (H25 ENGINE) 6A2-7
.
m (6.0 kg-m, 43.5 lb-ft)
.
m (2.7 kg-m, 19.5 lb-ft)
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