Husqvarna 443RB Operator's Manual page 24

To add grease to the bevel gear
• Make sure that the bevel gear is filled 3/4 full with
bevel gear grease.
To examine the spark plug
CAUTION: Always use the recommended
spark plug type. Incorrect spark plug type
can cause damage to the product.
• Examine the spark plug if the engine is low on
power, is not easy to start or does not operate
correctly at idle speed.
• To decrease the risk of unwanted material on the
spark plug electrodes, obey these instructions:
a) Make sure that the idle speed is correctly
adjusted.
b) Make sure that the fuel mixture is correct.
c) Make sure that the air filter is clean.
• If the spark plug is dirty, clean it and make sure that
the electrode gap is correct, refer to
on page 26 .
• Replace the spark plug if it is necessary.
24
To sharpen grass cutters and grass
blades
•
To sharpen the saw blade
•
•
Technical data
•
•
Sharpen all edges of the grass cutters and blades
equally to keep the balance. Use a single-cut flat file.
WARNING: Stop the engine. Use protective
gloves.
To sharpen the blade correctly, refer to the
instructions that come with the blade.
Make sure that the product and blade has sufficient
support when you sharpen it.
Use a 5.5 mm (7/32 in) round file with a file holder.
Hold the file at an angle of 15°.
1395 - 002 - 14.01.2020