Suzuki DF 25 Service Manual page 164

CONROD BEARING
Inspect bearing shell for proper contact pattern and signs of
fusion, pitting, burning or flanking.
Bearing shells forund in defective condition must be replaced.
Conrod big end oil clearance
Check coonrod big end oil clearance as follows:
(1) Clean surface of conrod, conrod cap, conrod bearing, and
crank pin.
(2) Install conrod bearing onto conrod and conrod cap.
NOTE:
• Reassemble each bearing and conrod cap to their original
position.
• Do not apply oil to bearing.
(3) Plece a piece of plastigauge on crank pin parallel to crank-
shaft. Avoid placing Plastigauge over oil hole.
09900-22301 : Plastigauge
(4) Install conrod cap (with bearing) to conrod with the arrow
mark on cap toward flywheel side.
(5) Apply engine oil to conrod bolts and tibhten nut in two steps.
Conrod cap nut :
18 N . m (1.8 kg-m, 13.0 lb.-ft.)
1 st step
Final step 35 N . m (3.5 kg-m, 25.5 lb.-ft.)
NOTE:
Do not rotate conrod with Plastigauge in place.
POWER UNIT 7-47