After the first 250 miles (400 km.), remove the smaller of the two screwed plugs
from the bottom of the crankcase and drain out any oil which may have accumulated
there. With the petroil lubrication system employed there is never a considerable
quantity of liquid oil in the crankcase, but whatever oil there is should be drained
away, and this is preferably done while the engine is warm immediately after a run,
as the oil will flow more freely and carry with it any foreign matter which may have
found its way into the crankcase during the running-in process.
Make certain on replacing the plug that it is made really tight in order to prevent
loss of crankcase compression.
During the running-in period the gearbox should also be drained and flushed out
and this is preferably done at the same time as the crankcase.
Information regarding the correct grades of oil is given in the chart on page 18.
ROUTINE MAINTENANCE
To keep the machine in good condition and provide trouble-free running,
maintenance must be regularly carried out. The following list of items requiring
regular attention will serve as a guide to the periods between servicing and the
method of carrying out the various adjustments will be found under the appropriate
headings in the later chapters.
Weekly
Check tyre pressures and remove any embedded stones or pieces of metal.
Oil brake pedal pivot and all exposed joints and cables.
Monthly
Examine the battery (when fitted) and top up if necessary. More frequent
examination is advisable in a hot climate.
Every 300 Miles
Check oil level in gearbox and top-up if necessary.
Every 1,000 Miles
Grease hubs, steering head, clutch operating mechanism, central stand, front
forks (D1) and rear suspension (plunger type).
Oil brake cam spindles and saddle nose bolt.
Check rear chain adjustment.
Every 2,000 Miles
Change the oil in the gearbox.
Grease the speedometer drive.
Check tightness of all nuts and bolts.
Every 3,000 Miles
Check contact breaker adjustment and grease the felt pad.
Cleaning
Obviously regular and thorough cleaning will keep your machine looking smart and
will help to retain both its new appearance and value. But it helps also to lengthen its
life and maintain efficiency if the cleaning process is carried out correctly.
Take special care to prevent dust and grit from working into such parts as hubs,
carburetter, magneto, brakes and gearbox.
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