To Examine The Spark Plug; To Sharpen Grass Cutters And Grass Blades; Troubleshooting - Husqvarna 531RS Manual De Usuario

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 23 .

Troubleshooting

Starting failure
Check Possible cause
Stop button Stop position
Starter pawls Binding pawls
Fuel tank Incorrect fuel
type.
Carburetor Adjustment of
the idle speed.
Spark (no Spark plug dirty
spark) or wet.
Spark plug
clearance in-
correct.
Spark plug Spark plug
loose.
22
• Replace the spark plug if it is necessary.
To sharpen grass cutters and grass
blades
• Sharpen all edges of the grass cutters and blades
equally to keep the balance. Use a single-cut flat file.
Technical data
Troubleshooting
Solution
Set the stop switch to the start position.
Adjust or replace the pawls.
Clean around the pawls.
Speak to an approved servicing dealer.
Drain it and use correct fuel.
Adjust the idle speed with the T screw.
Make sure that the spark plug is dry and clean.
Clean the spark plug. Check that the electrode gap is correct. Make sure that the
spark plug is installed with a supressor.
Refer to technical data for correct electrode gap.
Tighten the spark plug.
1274 - 002 -