TOHATSU NB-1000 Service Manual page 70

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4. Inspect the following slide valve components:
• Check throttle wire (1) for wear and fraying.
• Check return spring (2) for damage.
• Check spring receiver (3) for distortion.
• Check jet needle clip (4) for damage. Normal clip setting is second
groove from bottom.
See Adjustments, this section, for information on clip
settings.
• Check jet needle (5) for wear or distortion.
• Check slide (6) for nicks, scratches and wear.
5. Check aIl passages and holes with a syringe filled with isopropyl
alcohol.
6. Inspect aIl gasket surfaces for damage.
7. Visually inspect the carburetor body, float chamber, drain screw,
and all other parts 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 all components are
completely clean and dry and aIl replacement parts
match the originals.
9
1. During assembly, replace o-ring (14) and gasket (15).
2. Invert carburetor and install following components. Tighten jets
securely but do not use thread locker:
• Needle jet and main jet assembly (12).
• Float valve assembly (10).
3. Install new gasket (15) on carburetor body.
9
1-/ 2-Cylinder
NOTE
CAUTION
NOTE
FUEL SYSTEM
8
9
T1132
T2050
3-23