TOHATSU 40 Service Manual page 158

3. Eliminate all looseness between driveshaft and gearcase
44
using one of the following methods:
• Lift driveshaft upward and tap down on gearcase with rubber
mallet.
• Slide a compression spring (obtain locally) over driveshaft and
seat onto lower pump case. Install backlash measuring tool
clamp assembly (Part No. 3B7-72720-0) on driveshaft.
Compress the spring and tighten the clamp to maintain the
spring compression and provide constant upward pressure
against driveshaft.
With all looseness eliminated, measure the gap between collar (7)
and bevel gear B using thickness gauge set (8) (Part No. 353-
72251-0). If gap measurement is not within 0.023 - 0.025 in [0.60 -
0.64 mm], remove the lower pump case and install correct size
shim onto roller bearing outer race at location (9).
Refer to current Parts Catalog for shim availability.
4. If shimming was necessary re-install the lower pump case before
proceeding with Backlash Adjustment - Bevel Gears A and B.
3-/ 4-Cylinder
NOTE
GEARCASE
6-21