40 agria Multi-Purpose Machine 400P
5. Maintenance
5
Spark Plug
l
After every 50 operating hours, clean the spark
plug and re-adjust the electrode gap to 0.7–0.8
mm. Only clean the spark plug using a wire brush
and wash it out with a commercial cleaning agent.
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Replace the spark plug at 100-hour intervals
or when it shows significant wear or if the insula-
tor is damaged.
Spark plug assembly:
Screw the spark plug into the cylinder head by hand.
Then continue with a spark plug wrench. Turn
wrench at 90° or at a torque of 20…30 Nm.
Checking the ignition sparks:
Remove the spark-plug, clean it and place it back
into the plug connector. Use the lateral electrode
to make contact with the engine, pull the starter
rope and wait for sparking. If there are no sparks,
replace the spark plug.
I
Never use a spark plug of an incorrect heat
range.
W
Careful, do not touch the muffler! This is
very hot after engine operation.
Cleaning the Cooling Screen
After long operation, dirt can clogg the cooling sys-
tem. To avoid overheating and damage to the en-
gine, regularly clean cooling screen (B/8). Check
each time before you take up operation!
Air-Cooling System
Clean internal cooling fins and surfaces at least
every 100 operating hours (earlier in very dusty con-
ditions).
è - Serviceç
Wire brush
0,7-0,8 mm
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