Separate Fuel Tank - TOHATSU NB-1000 Service Manual

SECTION 3
Recirculating
Recirculation hoses at the inlet manifold and crankcase recirculate
unburned fuel for engine consumption.

SEPARATE FUEL TANK

Two types of separate fuel tanks are used. Smaller engines
1
use the 3.1 gal [12 L] separate fuel tank. Larger engines use
a 6.6 gal [25 L] separate fuel tank. Both tanks have filler caps with
an integral fuel gauge and manual vent screw, and a fuel pick-up
pipe with a hose quick connector.
Cleaning
Water or dirt in the fuel tank can cause fuel starvation and engine
problems. Clean and inspect fuel tank once a year or after long time
storage (more than 3 months).
1. Disconnect fuel line from fuel tank.
2. Empty remaining fuel from tank and properly dispose.
3. Fill tank 1/4 with fresh gasoline and install cap. Rigorously shake
tank for 30 seconds to loosen dirt particles.
4. Empty gasoline from tank and properly dispose.
5. Inspect tank components before refilling.
Inspection
All worn, damaged, or missing parts must be replaced.
1. Inspect overall condition of tank exterior and interior. Cracked or
damaged tanks must be removed from service.
2. Inspect the cap vent screw (1) and inner gasket (2) for
2
cracks, vent hole blockage or deterioration. Check that float
(3) moves freely and operates the gauge needle.
3. Unscrew tank pickup tube and check for cracks. Remove
3
and inspect connector (4), filter (5) and gasket (6).
4. Reassemble and install all tank components.
5. See Fuel Hose and Primer, this section.
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T1107
T1108
T1109
1-/ 2-Cylinder