Weekly
page
Check tyre pressures and remove any embedded stones or pieces of
metal.
Oil brake pedal pivot and all exposed joints and cables.
Examine the battery and top up if necessary. More frequent
examination is advisable in a hot climate
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Check brake adjustment
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30
28
Every 1,000 miles
Check rear chain adjustment . .
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Check oil level in gearbox and top up if necessary
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Clean air filter . .
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Grease swinging fork pivots (2)
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Grease clutch control . .
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Oil central stand pivots.
28
26
20
29
25
Every 2,000 miles
Check tightness of all nuts and bolts.
Change oil in gearbox . .
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Grease brake cams.
Grease speedometer drive
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26
26
Every 5,000 miles
Check contact breaker adjustment and grease the felt pad
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13
Every 10,000 miles
Drain and re-fill front forks . .
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28
ENGINE
Lubrication
Lubrication for the engine is provided by oil dissolved in the petrol to provide a
mixture commonly called “petroil”. The filler cap on top of the petrol tank will be
found to incorporate a tubular extension which projects into the tank. This serves as
a measure for lubricating oil and is used for preparing the correct mixture of petrol
and oil required. The correct proportion of oil to petrol is given on page 22, and the
grades of oil recommended should be used, as lighter grades may prove unsuitable.
For correct running of the engine and also for adequate lubrication, it is essential
that the oil should be completely dissolved in the petrol, and it is, therefore,
preferable to use self mixing oils specially prepared for two-stroke engines as
detailed in the list of recommended lubricants (page 22). Alternatively, ready-mixed
oil and petrol can be obtained from dispensers kept by many garages. As the only
lubrication for the engine is by means of fuel drawn in through the carburetter, the
machine must not be coasted downhill for long periods with the throttle shut as the
engine may suffer seizure through lack of lubrication.
The engine mainshaft bearings are automatically lubricated, those on the driving
side from the chaincase, and those on the opposite side from the gearbox. Special
seals prevent transference of this oil to the crankcase.
In order to obtain correct timing and proper functioning of the contact breaker, the
points must be set to the correct gap when in the fully opened position, and this
