Yamaha TDM850 User Manual page 115

8.3 Remove the air passage O-ring
bottom of the spring (see illustrations 10.12b
and a).
3 Remove the air passage O-ring and discard it
as a new one should be used (see illustration).
4 Carefully peel the diaphragm away from its
sealing groove in the carburettor and withdraw
the diaphragm and piston assembly
illustration).
Caution: Do not use a sharp instrument to
displace the diaphragm as it is easily
damaged.
5 Push the jet needle up from the bottom of
the piston and withdraw it from the top, along
8.5 Remove the jet needle and its washer
8.7b Withdraw the pivot pin and separate
the float, needle valve and seat
with the washer (see illustration). If the E-clip is
removed from the needle, note which notch it is
fitted into.
6 Remove the screws
chamber to the base of the carburettor and
remove the float chamber, noting how it fits (see
illustration). Remove the rubber gasket and
(see
discard it as a new one must be used.
7 Carefully prise the float assembly out of the
carburettor body, noting how it fits (see
illustration). Remove the O-ring and discard it
as a new one must be used. If required, withdraw
the float pivot pin and remove the float and
needle valve, then unhook the
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8.6 Remove the screws (arrowed) and lift off
the float chamber
8.8 Starter jet (A), main jet holder (B), main jet
(C), pilot jet (D)
Fuel and exhaust systems 4*9
8.4 Lift out the diaphragm/piston assembly
needle valve from the tab on the float, noting
how it fits (see illustration).
8 Unscrew and remove the starter jet, then
remove the main jet holder, noting how it fits
securing the float
(see illustration). Remove the main jet - it is a
push fit. Discard the O-ring as a new one should
be used.
9 Unscrew and remove the pilot jet (see
illustration 8.8).
10 Unscrew the bolt securing the jet housing
and remove
Remove the jet housing and discard its rubber
gasket as a new one should be used. Push on
the needle jet and withdraw the piston guide
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8.7a Carefully prise out the float assembly
8.10a Unscrew the bolt (A), remove the
collar (B), and lift off the jet housing (C)
the collar (see illustration).
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