Butterfly Valve Carburetors - TOHATSU NB-1000 Service Manual

SECTION 3
2. HIGH SPEED (1/4 to 3/4 Throttle) – The jet needle clip is factory
set to the second needle groove from the bottom and does not
normally need adjustment.
Move the jet needle clip (1) up to a higher groove to make
18
the fuel-air mixture leaner or down to a lower groove to make
the fuel-air mixture richer.

BUTTERFLY VALVE CARBURETORS

Removal
1
1. Remove the air silencer (1).
2. Remove the carburetor throttle rod (2) and choke linkage (3).
3. Disconnect the choke knob (4) or choke solenoid plunger
hook as required.
2
4. Remove the fuel hose (5).
DO NOT pull fuel hoses off fuel fittings - push
them off. lf hose cannot be pushed off, carefully
cut the hose along its side and peel it off to avoid
damaging the fitting.
5. Remove carburetors and discard the carburetor base gaskets
3
or o-ring seal.
3-26
CAUTION
T1136
T1137
T1138
T1139
1-/ 2-Cylinder