Honda Beat Workshop Manual

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Here you go, hope this helps:

Engine Manual 4 - 7: Oil clearance measurement
Main bearing
Caution
• Ensure that you measure in the correct axis.
• Don’t measure the crankshaft on an off-centre angle, and don’t rotate the crankshaft (translation note: whilst you have a plastigauge clamped in)
1. Take the cap and bearing off. When you put it back on use the correct torque.
2. Cut the plastigauge the same length as the axial direction (translation note: width of the journal bearing) and place it on top of the crankshaft journal.
3. Place and tighten the cap at the correct torque (4.8kg-m).
4. Remove the cap and use the scale on the bag that the plastigauge came in to understand the measurement. Use the fattest part of the width for the measurement.

Journal oil clearance:
Normal: No1 and No4 journal = 0.016mm to 0.032mm
Service limit: 0.05mm

Left hand image here

5. When the measurement is in excess of the limit, inspect for block expansion or friction, and if there is no abnormality then use an undersize bearing and re-check the clearance.


Conrod bearing
Caution
• Ensure that you measure in the correct axis.
• Don’t rotate the crankshaft when you are tightening or loosening the conrod.
1. Take the cap and bearing off. When you put it back on use the correct torque.
2. Cut the plastigauge to length and place it on the crankshaft pin.
3. Place and tighten the cap at the correct torque (3.2kg-m).
4. Remove the cap and use the scale on the bag that the plastigauge came in to understand the measurement. Use the fattest part of the width for the measurement.

Pin oil clearance:
Normal: 0.020mm to 0.038mm
Service limit: 0.05mm

Right hand image here

5. When the measurement is in excess of the limit, inspect for block expansion or friction, and if there is no abnormality then use an undersize bearing and re-check the clearance.