Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Crankshaft Main Bearing

Main bearings are available in standard size and undersizes of .010 and .020 inch. The different main bearing thicknesses are identified by a color code on the edge of the bearing shell. The correct bearings to use for each journal are determined during production and are shown by paint marks in the crankcase for bearings in the block; and by paint marks on the crankshaft counterweights, for bearings in the main caps.