Transcriber’s notes:
The original spelling, punctuation and hyphenation has been retained except for apparent printer’s errors which have been silently corrected.
In the Fig. 51 caption M—MARK ON BREAKER CAM AND MARKS ON TIMER HEAD AND HAND - ‘HAND’ should possibly read ‘BAND’.
In the echelon table, section 25. ALLOCATION OF MAINTENANCE, ‘strained gasoline’ should possibly read ‘strainer gasoline’.
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