Ossa TR280i, User Manual

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0,7 mm
To access the sparkplug detach the upper section of the motorcy-
cle (see page 29). Once the upper cover has been removed, the
motorcycle’s electrical system can be accessed. Carefully but
firmly, pull away the hood that provides a current, leaving the upper
part of the sparkplug exposed. Using a special sparkplug key,
unscrew it.
The sparkplug should be checked regularly and a spare
sparkplug should be carried at all times in case it comes
off. The sparkplug can accumulate charcoal and dirt with
use. For this reason, it can be removed and cleaned so
that it lasts longer.
Observe the distance between the electrode and the
arch. This distance should be 0.7 mm.
NOTE: The sparkplug should not be handled if the
motorcycle is hot.
38 User manual
Sparkplug Chain – tension adjustments
User manual 39
The transmission chain transmits the engine’s movement to the rear
wheel. To ensure that is works correctly, it should be checked.
The axle has easily adjustable eccentrics for tensing
the chain and centring the wheel.
The chain tension should permit 2 cm of oscillation
in the chain tension adjuster.
The chain hook should be positioned in an opposite
direction to the gear, as can be seen in the photo.
User manual 41