TOHATSU NB-1000 Service Manual page 159

2. Remove all gasket residue from lower pump case with
10
abrasive cleaning pads and gasket remover. Do not scrape
the gasket surface with metal scraper. Thoroughly clean all
components with isopropyl alcohol and dry with Iou pressure
compressed air.
3. Inspect the upper and lower pump cases for signs of melting and
cracks. Replace as needed.
4. Examine lower pump case oil seals (1) for signs of damage
11
and deterioration.
12
If necessary to replace seals, use appropriate size
seal puller and installer to avoid damaging new seals
and seating surfaces in lower pump case. Apply
silicone spray lubricant to seals and install so lips
face direction indicated.
5. Apply anaerobic gasket maker to seating surface of water
13
pipe lower seal (2).
6. Install seal in upper pump case so locking tabs (3) align
14
with holes (4).
7. Slide pump case liner (5) partially into upper pump case
15
housing so locking tab (6) is aligned with notch in housing.
Pump case liner must be flush with flanged surface
of upper pump case. lf not, remove liner and re-align
locking tab with notch in upper pump case housing.
1-/ 2-Cylinder
T1344
NOTE
NOTE
GEARCASE
12
T1707
T2042
T1347
T1348
T1349
6-7