Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 449Get this manual

Mercury Mariner 200, 225 Optimax Outboards Service Manual, 90-855348, Page 449

NOTE: If backlash needs to be adjusted, (see Checking Reverse Gear Backlash), adding 0.001 in(0.025 mm) shims will reduce the gear backlash byapproximately 0.001 in(0.025 mm)Subtracting 0.001 in(0.025 mm) shims will increase backlash byapproximately the same amount Forward GearBearing Carrier Assembly
CHECKING FORWARD GEAR BACKLASH (RATCHETING)
NOTE: If backlashes have already been checked and they are to specification, proceed with "Bearing Carrier Assembly", 'Final Installation' section

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