Suzuki DF 90 Service Manual page 198

CRANKSHAFT MAIN BEARING
Inspect bearings for proper contact pattern and signs of fusion,
pitting, burning or flaking.
Replace if necessary.
Always replace both bearing halves, never replace only one
half of a bearing set.
CRANKSHAFT JOURNAL OIL CLEARANCE
Check crankshaft journal oil clearance as follows:
1. Clean surface of bearing holder (crankcase and cylinder),
bearing and main bearing journal.
2. Install main bearing to cylinder and crankcase.
NOTE:
• Assemble each bearing in its original position before check-
ing clearance.
• Align the tab a of bearing with notch in cylinder and crank-
case.
• Do not apply engine oil to bearing.
• Install bearing half with oil hole / groove to cylinder side.
3. Install crankshaft to cylinder.
4. Place a piece of Plastigauge on journal parallel to crank-
shaft. Do not place Plastigauge over oil hole.
09900-22301 : Plastigauge (0.025 — 0.076 mm)
NOTE:
Do not rotate crankshaft while Plastigauge is installed.
POWER UNIT 6-53
Oil hole / groove Oil hole / groove
Plastigauge