Anova MG246 Manuel D'instructions page 106

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Periodic service points
Cylinder fins
1.
Dust clogging between the cylinder fins will cause the engine to overheat.
Periodically check and clean the cylinder fins after removing the air filter
and cylinder cover. When installing the cylinder cap, make sure the
switch wires and grommets are properly in place.
Fuel filter
2.
Using a wire hook, pull the filter out of the fill
(a)
hole.
Remove the filter and wash it with gasoline, or
(b)
replace it with a new one if necessary.
After removing the filter, use a pliers to hold
(c)
the end of the suction tube.
Spark plug
3.
Clean the electrodes with a wire brush and readjust the gap to 0.6mm -
0.7mm as necessary.
Pinion
4.
Check for cracks and if excessive wear interferes with chain drive. If the wear
is advanced, contact your dealer or the importer manufacturer's maintenance
to replace it. Never put a new chain on a worn sprocket, or a worn chain on a
new sprocket.
1. Ring E
2. Washer
3. Needle bearing
4. Clutch drum
5. Front and rear shock absorber spring
Replace if spring is deformed
Use only the replacement parts indicated in this manual. Using the other
replacement part can cause serious injury.
Spark plug type ： NGK BPMR7A