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Engine is flooded
Move the choke knob to F and
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continue cranking until the engine
runs.
Fuel tank run until completely dry
After refueling, press the manual
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fuel pump bulb at least five times –
even if the bulb is already filled with
fuel.
Set the choke lever to suit the
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engine temperature.
Now start the engine.
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KM 91 R
Operating Instructions
During break-in period
A factory-new machine should not be
run at high revs (full throttle off load) for
the first three tank fillings. This avoids
unnecessary high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
engine are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This protects engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Empty the fuel tank
and keep the machine in a dry place,
well away from sources of ignition, until
you need it again. For longer out-of-
service periods – see "Storing the
Machine".
Replacing the Air Filter
Filters have an average life of more than
a year. Do not remove the filter cover or
replace the air filter as long as there is no
noticeable loss of power.
If there is a noticeable loss of engine
power
3
4
Turn the choke knob to g.
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Loosen the screws (1).
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Remove the filter cover (2).
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Clean away loose dirt from around
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the filter.
Remove the filter element (3).
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Replace dirty or damaged filter
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element (3).
Replace any damaged parts.
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Installing the Filter Element
Install the filter element (3) in the
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filter housing and fit the cover.
Insert the screws (1) and tighten
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them down firmly.
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