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4.2.4 Timing Marks and Drive Gear Identification.
Fig 26
• Before installing the gears into the gearbox, identify the location of the
timing marks and make sure they are lined up per above during
installation. The gear with one mark should correspond with the drive
shaft.
• The drive gear must be installed onto the drive shaft. The drive gear can
be identified by looking at the direction of the helix angle, if the helix angle
is slanting to the right then it’s the drive gear see below.
• When installing the gears note the gear spacer and the keys must be
installed first – otherwise the gear will foul on the gearbox and the timing
will move.
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