6
B
LEFT HAND NON-RATCHETING
90-884294 OCTOBER 2001 Page 6B-1
LOWER UNIT
Section 6B – Left Hand Non-Ratcheting
Table of Contents
Gear Housing Specifications (Counter Rotation) 6B-1. .
Special Tools 6B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing (Drive Shaft)(Counter Rotation) 6B-8. . .
Gear Housing (Prop Shaft)(Counter Rotation) 6B-10. . .
General Service Recommendations 6B-12. . . . . . . . . . .
Removal, Disassembly, Cleaning and Inspection of
Counter Rotation (Left Hand) Gear Housing 6B-13. . . .
Pre-Disassembly Inspection 6B-16. . . . . . . . . . . . . . . . . .
Propeller Shaft 6B-16. . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Pump 6B-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Seal Carrier Assembly 6B-19. . . . . . . . . . . . . . . . .
Bearing Carrier and Propeller Shaft Removal 6B-21
Forward Gear Bearing Adaptor Assembly 6B-33. . .
Drive Shaft Assembly 6B-35. . . . . . . . . . . . . . . . . . . . .
Propeller Shaft Assembly 6B-40. . . . . . . . . . . . . . . . . .
Reverse Gear Assembly 6B-44. . . . . . . . . . . . . . . . . .
Shift Spool Assembly 6B-47. . . . . . . . . . . . . . . . . . . . .
Reverse Gear Bearing Adaptor Assembly 6B-50. . .
Shift Shaft Assembly 6B-52. . . . . . . . . . . . . . . . . . . . . .
Pinion Bearing 6B-55. . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Housing Reassembly 6B-56. . . . . . . . . . . . . . . . . . .
Gear Housing Inspection 6B-56. . . . . . . . . . . . . . . . . .
Pinion Bearing 6B-57. . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Gear Bearing Adaptor Assembly 6B-58. . .
Shift Shaft Assembly 6B-60. . . . . . . . . . . . . . . . . . . . . .
Gear Location/Backlashes Checking and
Adjustment 6B-61. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Gear 6B-61. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Shaft and Pinion Gear 6B-62. . . . . . . . . . . . . . .
Gear Location/Backlashes/Checking and
Adjustment 6B-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pinion Gear Location 6B-66. . . . . . . . . . . . . . . . . . . . .
Reverse Gear Backlash 6B-70. . . . . . . . . . . . . . . . . . .
Forward Gear/Bearing Carrier Assembly 6B-72. . . .
Forward Gear Backlash 6B-78. . . . . . . . . . . . . . . . . . .
Propeller Shaft Assembly 6B-80. . . . . . . . . . . . . . . . . . . . .
Component Reassembly 6B-80. . . . . . . . . . . . . . . . . .
Propeller Shaft Assembly 6B-82. . . . . . . . . . . . . . . . . . . . .
Installation 6B-82. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Shaft and Pinion Gear 6B-85. . . . . . . . . . . . . . . . . .
Final Installation 6B-85. . . . . . . . . . . . . . . . . . . . . . . . . .
Bearing Carrier Assembly 6B-87. . . . . . . . . . . . . . . . . . . .
Final Installation 6B-87. . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Seal Carrier Assembly 6B-96. . . . . . . . . . . . . . . . . . . .
Installation 6B-96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Water Pump Assembly 6B-96. . . . . . . . . . . . . . . . . . . . . . .
Installation 6B-96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Lubricant Filling Instructions 6B-100. . . . . . . . . . .
Installing Gear Housing to Driveshaft Housing 6B-100
Propeller Installation 6B-102. . . . . . . . . . . . . . . . . . . . . . .
Speedometer Tube Installation 6B-103. . . . . . . . . . . . . .
Gear Housing Specifications (Counter Rotation)
Ratio Pinion Depth
Forward Gear
Backlash
Reverse Gear
Backlash
1.75:1
1.87:1
0.025 in. (0.635 mm) With Tool
91-12349A2 using Disc #2 and
Flat #4
0.017 in. to 0.028 in. (0.431 mm
to 0.711 mm) Pointer on line
mark #1
0.040 in. to 0.060 in.
(1.01 mm to 1.52 mm)
Gearcase Lubricant Capacity
All Ratios 27.0 fl. oz. (798.0 ml)
Gearcase Pressure Check
Gearcase without Oil Gearcase should hold 15 psi for 5 minutes without leakage
Gear Ratio Pinion Gear Teeth Forward and Reverse Gear Teeth
1.75:1 12 21
1.87:1 15 28
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