Assembling The Carburetors; Adjusting The Throttle Stop Screw - Yamaha E60HWD Service Manual

FUEL

Assembling the carburetors

1. Install the main air jet 1, and then install
the plate 2 and a new gasket 3 into the
carburetor body.
2. Install the pilot air jet 4, and then install
the plate 5 and a new gasket 6 into the
carburetor body.
3
2
3. Install a new O-ring 7 to the plate 8 and
face the mark upward to the carburetor
body.
4. Install the cover onto the carburetor body.
5. Install the needle valve 9, float 0, and
float pin q, as shown, and then the
check the float for smooth operation.
9
NOTE:
Place the needle valve in the valve seat when
installing the float to the chamber.
4-9
Fuel system
4
1
6
5
69D40015
7
8
69D40020
0
q
69D40030
6. Install the pilot screw, turn it in until it is
lightly seated, then out the specified
number of turns.
NOTE:
9 Adjust the throttle cable whenever the car-
buretor has been disassembled or the
engine idle speed has been adjusted.
9 For adjustment procedures, see Chapter3.
Pilot screw setting:
1 1/4 —1 3/4 turns out
7. Install the carburetor assembly.

Adjusting the throttle stop screw

1. Start the engine and warm it up for 5 min-
utes.
2. Turn the throttle stop screw 1 on the car-
buretor #2 in direction a or b until the
specified engine idle speed is obtained.
NOTE:
9 To increase the idle speed, turn the throttle
stop screw in direction a.
9 To decrease the idle speed, turn the throttle
stop screw in direction b.
Engine idle speed:
950—1,050 r/min
3. If the specified engine idle speed cannot
be obtained, adjust the throttle cable.
b
a
1
69D40040
69D5G11