Yamaha F30B 2018, Service Manual

Page: 244 / 348

8-24
S himming
S himming
S himming workflow
TIP:
• Make sure to drain the gear oil before measuring the backlash.
• If the backlash is within specification, shimming is not required.
• When assembling the original inner parts and a new lower case, shimming is required.
• When replacing the pinion, forward gear, reverse gear, bearings, drive shaft, or propeller shaft hous-
ing, shimming is required.
1. Remove the water pump
a
ss embly.
2. Mea s ure the backla s h before
di s a ss embly.
3. Within s pecification? 5. Shimmin g i s not required.
3. Within s pecification?
12. In s tall the water pump
a ss embly.
11. Adju s t the forward g ear s him
thickne ss (T1) and rever s e
g ear s him thickne ss (T2).
4. YES
6. NO
6. NO
4. YES
7. Di s a ss emble the lower unit.
8. Select the pinion s him s (T3).
9. A ss emble the lower unit.
10. Mea s ure the backla s h.
1. Remove the water pump assembly.
2. Measure the backlash before disassem-
bly.
3. Within specification?
4. YES
5. Shimming is not required.
6. NO
7. Disassemble the lower unit.
8. Select the pinion shims (T3).
9. Assemble the lower unit.
10. Measure the backlash.
11. Adjust the forward gear shim thickness
(T1) and reverse gear shim thickness
(T2).
12. Install the water pump assembly.