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14 (T)PFC carburettor: refitting
Brazilian models
1
Refit the throttle valve assembly ensuring that the groove in
the valve engages with the locating pin set in the carburettor
body, and that the needle enters correctly into the jet, then
tighten the carburettor top securely. Check that the valve opens
and closes smoothly.
2
Ensuring that new sealing O-rings are used if necessary,
refit the inlet stub to tbe carburettor and the carburettor
assembly to the cylinder head. Tighten the mounting nuts and
bolts securely, but do not overtighten them.
3
Connect the accelerator pump cable end nipple to the pump
cam, then fit the cable adjuster to the bracket. Refit the air filter
hose and tighten its clamp screw securely. Refit the right-hand
side panel and connect the feed pipe to the petrol tap. Switch
the petrol tap on and check for leaks. Route the drain tube
correctly to the rear of the engine/gearbox unit.
4
Check that the throttle and accelerator cables are adjusted
with reasonable accuracy, but leave them slightly slack until
final adjustment, as described in the next Section.
15 (T)PFC carburettor: adjustment - CG125-C, E and
Brazilian models
1
The procedure for setting the float height, idle mixture
setting and idle speed are exactly as described in Chapter 2, but
note the different settings specified in this Chapter. Note also
that if a plastic float assembly is fitted the float height can be
corrected
only
by renewing
adjustment is possible.
2
To adjust the throttle cable, note that the twistgrip adjuster
should be used to eliminate slack from the upper cable
(twistgrip to junction box) while the carburettor top adjuster
(where fitted) is used to eliminate slack from the lower cable.
plastic item, incorrect float height can be
cured only by renewing worn components
pump linkage cam and bracket should
align
Chapter 7 The 1985 on models
CG125-C. E and
the faulty component;
no
complicate throttle cable adjustment
Note that individual machines will vary considerably due to
production tolerances in cable component length and to the
different rates of 'stretch' that must be expected; correct
adjustment, therefore, may well be obtained only by using both
adjusters to achieve a compromise setting. This is simplified on
later models which have only the twistgrip adjuster. The throttle
cable must have 2 - 6 mm (0.08 - 0.24 in) free play measured
in terms of twistgrip rotation. When the throttle cable is
correctly set, tighten the (twistgrip) adjuster locknut, refit the
rubber sleeve over both adjusters and check that the idle speed
remains steady after the throttle has been opened and closed
several times, and at all handlebar positions.
3
When the idle speed and throttle cable setting are correct,
adjust the accelerator cable so that the reference mark etched
in the pump cam aligns exactly with the index mark cut in the
linkage bracket when the throttle is fully open (engine switched
off). Tighten the locknut and re-check the setting. Set the
required amount of free play in the pump linkage by slackening
its adjuster locknut and screwing the adjuster screw in through
the setting while the locknut is tightened securely, then refit the
carburettor cover. Check the correct operation of the pump
linkage.
4
Note that if the carburettor has been completely dismantled
the pump passages may require priming before they function
normally, and that they may, therefore, take some time to fill
after the machine has been started and run for the first time.
16 Oil pump: general
On servicing the oil pump, note that a tachometer drive
worm has been incorporated in the assembly. Since it fits into
an extended housing and replaces the pump spindle shown in
Chapters 1 and 2, servicing procedures remain the same. When
checking the oil pump note the additional clearance specified in
this Chapter, as well as those given in Chapter 2.
stop screw is reached via hole in cover
1 6.1 Note tachometer drive worm - not
used on UK models
117
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