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• The machine must not be tilted during maintenance work.
Caution:
Should the machine have toppled over for some reason, you must set it upright
again as soon as possible. The unusual position of the engine may have caused
oil to seep from the crankcase via the carburettor onto the air filter. Oil on the
filter paper obstructs the air passage and the filter must therefore be replaced.
11.3.4 Checking the propeller
• For your and other people's safety it is of key importance to regularly check the propeller for
ruptures. In order to investigate this easily, the protective plate must be removed from the
suction opening. See Appendix (A torch will be required to now inspect the dark turbine area).
• If any deformities or ruptures are discovered on the propeller, repairs must be carried
out immediately. In this event, it is not only a question of welding the rupture, but also of
rebalancing the propeller itself.
• In order to dismantle the propeller, the full front plate of the blower
must be detached. See Appendix
• Once the front plate has been removed, the propeller can be accessed
easily. This propeller is mounted directly onto the crankshaft. The
propeller mounting is hidden behind the hood that is secured with
one M8 bolt (spanner 13).
• In order to ensure that the propeller cannot come loose, it is secured
with a special conical bushing on the crankshaft.
How to dismantle the propeller:
• At the heart of the propeller is a conical drill socket. There are three holes, two of which carry
a socket-head screw.
• One of these bolts must be fully unscrewed. The other must be half
undone.
• The fully loosened screw is then screwed into the hole that was initially
empty. After screwing it in, secure it tightly. While securing it, the two
parts of the socket head will come apart.
• The entire propeller can now be slid off the crankshaft.
• Make sure not to lose the wedge in the crankshaft while dismantling
the socket head.