Suzuki outboard motors 1988 2003 repair manual., Page 302Get this manual
8-34 LOWER UNIT 4Then pull out the propeller shaft and bearing housing and then check the gear tooth contact patternBottom side toe contact
TOOTH CONTACT
05008G79
Tooth bottom
05008G76
7An example of incorrect bottom side toe contactTo correct this condition, increase the forward gear shim thickness and slightly decrease the pinion gear shim thickness Do not set the tooth contact in this position (bottom side toe contact)Damage and chipping of the pinion gear may result5This is the otimum tooth contactDoina shim adjustment mav be necessary to obtain this contact pattern1
Optimum tooth contact
approx13 of tooth width approx8After adjusting the tooth contact pattern, install the propeller shaft, bearing housing assembly, reverse gear and all related shims and washers9Recheck the amount of backlash by slightly rotating the drive shaft by handBacklash should not be less than when checked at the start of this entire procedure10If backlash is less, reduce the reverse gear back-up shim thicknessConvex side