Tune-Up Procedure; After Break-In - TOHATSU NB-1000 Service Manual

SECTION 2
Next Eight Hours (2 to 10 Hours)
• Run engine at 3/4 throttle.
• For short periods of time, run engine at full throttle and then
reduce speed back to 3/4 throttle. As this part of the break-in
period progresses, open to full throttle for longer and longer
periods of time, but never longer than 5 minutes.
• Vary engine speed every 15 minutes.
• DO NOT exceed the Full Throttle RPM Range of the engine. See
Engine Specifications in this section.

After Break-in

• Retorque cylinder head bolts to specification after engine has
been run and cylinder head has cooled to the touch.
• Empty fuel tank and replenish with a 50:1 gasoline/oil mixture.

TUNE-UP PROCEDURE

Deteriorated or damaged parts identified during
engine tune-up must be replaced in order to
maintain safe engine operation.
1. Inspect engine for leaks, missing, loose or damaged parts, or
other visible defects.
2. Remove each spark plug and check for fouling, cracks in
ceramic, and incorrect gap. Replace plugs if needed.
3. Check engine compression. Refer to Cylinder Compression -Test
in Section 4.
4. Check aIl wiring, connectors, and clamps for damage. Replace
parts as needed.
5. Replace fuel filter and inspect carburetor. Check fuel hoses for
deterioration. Replace as needed.
6. Check for proper clutch engagement and make shift linkage
adjustments as needed.
Model
2.5A/3.5A -
3.5B Shift rod joint : Cam rod position with shift rod
5 Shift rod joint : Cam rod position with shift rod
8/9.8 Shift lever stopper : Position onto Shift rod lever
9.9/15/18 Shift lever stopper : Position onto Shift rod lever
Shift lever stopper holder : Position onto Shift lever
25/30
stopper plate
Shift lever stopper holder : Position onto Shift lever
40
stopper plate
7. Check for proper operation of the reverse lock mechanism.
2-28
WARNING
Adjustment Part
1-/ 2-Cylinder