TOHATSU NB-1000 Service Manual page 77

SECTION 3
13
6. Inspect gasket surfaces for damage.
7. Check throttle shaft and choke shaft assemblies for excessive
play. inspect the butterfly valves for damage and smooth operation.
lf assemblies are defective, the carburetor must be replaced.
8. Visually inspect the fuel fitting, carburetor cover, float chamber,
drain screw, and all other screws and washers for damage.
Assembly
Fuel and air passages must be kept clean. Dust,
dirt, gum and varnish cause poor running and
increased wear.
Before proceeding, be sure alI components are
completely clean and dry and all replacement parts
match the originals.
1. During assembly, replace all serviceable gaskets and plugs.
2. Install the following components. Tighten jets securely but
14
do not use thread locker:
• All nozzles (7) and jets (5).
• All plugs (6).
15
3. Install the pilot (9) and stop (10) screw assemblies.
15
4. Install the cover and gasket (8) if equipped.
5. Install the needle seat (if removed) and float valve assembly.
3-30
CAUTION
NOTE
T1147
T1142
T1143
1-/ 2-Cylinder