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Carburettor Dampers (Fig. 76)
Unscrew the hexagon plug from the top of each carburettor
and withdraw the plug and damper assembly. Top up the damper
chambers with the current grade of engine oil. The oil level is
correct when, utilizing the damper as a dipstick, its threaded plug
is +" (6 mm.) above the dashpots when resistance is felt. Refit the
damper and hexagonal plug. Using an oil can, apply oil to the
throttle and choke control linkages.
Fan Belt Adjustment (Fig. 77)
The fan belt should be sufficiently tight to drive the water
pump and generator without unduly loading the bearings.
Adjust the belt by slackening the adjusting bolt (1), and the
generator pivot bolts (2). Pivot the generator until the belt can be
moved ¾" to 1 (19/25 mm.) sideways at the mid-point of its
longest run. Maintaining the generator in this position, securely
tighten the adjusting bolt and the two pivot bolts.
Sparking Plugs
Remove the sparking plugs for cleaning and re-set the gaps to
0.025" (0.63 mm.). Clean the ceramic insulators and examine
them for cracks or other damage likely to cause "HT" tracking.
Test the plugs before refitting and renew those which are suspect.
ROUTINE SERVICING
53
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