Rato R80, Maintenance Manual, Page: 69 / 79

Part IV Disassembly and Maintenance
65
Standard Service limit
See Tab. 1-3 See Tab. 1-3
c) Big-end oil-film clearance

Wipe oil off crankshaft pin and connecting rod bearing pad surfaces.

Set a plastic feeler gauge outside the crankshaft pin, install the connecting rod, and
tighten the bolt to the specified torque.
Torque: see Tab. 1-2.
Place the plastic feeler gauge radially.

Remove the connecting rod cap and measure with a plastic feeler gauge.

If the clearance of the bearing pad exceeds the maintenance limit, replace the connecting
rod and measure the clearance again.
Standard Service limit
See Tab. 1-3 See Tab. 1-3
Connecting rod bolt