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4.8 Fuel and exhaust systems
10.4a Undo the fixing screw.
. .
10.4b
.
. .
and remove the float on the Gurtner carburettor
6 Unscrew and remove the pilot jet and the
main jet (see illustrations).
7 On a Dell'Orto carburettor, unscrew and
remove the starter jet (see illustration 10.6a).
On a Gurtner carburettor the starter jet is a
press fit in the carburettor body and should
not be removed.
8 The idle speed adjuster screw projects into
the carburettor body to limit the movement of
the throttle slide (see illustration). Unscrew
the idle speed adjuster screw and remove it
and its spring (see illustration). Note: Record
the screw's current setting by counting the
number of tums required to remove it.
9 The pilot screw can be removed if required,
but note that its setting will be disturbed (see
Haynes Hint). Unscrew and remove the pilot
screw along with its spring (see Section 5).
To record the pilot screw's
c u m n t setting, turn it in until
rt seats lightly, counting the
m-
number of tums necessary to
achieve this, then unscrew it fully. On
reassembly, turn the screw in until it
seats lightly, then back it o u t the
number o f turns you've recorded.
1 0 . 4 ~ Withdraw the pin
. . .
10.4d
. . .
and remove the float on a
10.5 Note how the float valve (A) fits into
Dell'Orto carburettor
the tab (B)
1
L
A
10.6a Dell'Orto carburettor pilot jet (A), main jet (B) and
starter jet (C)
10.6b Gurtner carburettor pilot jet (A) and main jet (B)
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