32 Power Hoe 900 / 900-S
5. Maintenance
Air flap closed
5
Governor
For smooth engine performance keep
governor linkages, springs and actuat-
ing devices clean and free from dust and
dirt. Do not bend or twist parts. (Gover-
nor linkages on carburetor A/6).
Removing Carbon Deposits
After every 100 hours of operation take
off the cylinder head and remove car-
bon deposits on the cylinder, cylinder
head, piston crown, and valves and re-
new head gasket.
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Safety circuit Function
Check safety circuit function for proper
function each time you take up opera-
tion and you do maintenance work on
the machine.
Type 900:
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Upon release of the lever (A/15) the
engine must automatically come to a
stop.
Type 900-S:
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Upon release of the lever (A/15) and
when the clutch is engaged the engine
must automatically come to a stop.
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Check electric lines and connections
for good condition and exchange them,
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Speed Control
Devices for actuating engine speed must
be adjusted correctly to start, operate
and shut off the engine at correct speed
rates.
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Function Check
Remove the air filter (see page 30). Set
the speed control (A/1) to CHOKE. The
air flap on the carburetor must be closed.
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Carburetor Settings
Small differences in fuel, temperature,
height or strain may require slight ad-
justment of the carburetor. Only let en-
gine run with air filter and air filter cap
fitted.
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