Husqvarna 543RBX Operator's Manual page 22

To adjust the engine
Follow these instructions if the engine does not operate
correctly.
1. Attach an approved cutting attachment, see
Accessories on page 25 .
2. Start the engine.
3. Operate the product in usual conditions for 3
minutes.
4. Lift the cutting attachment in the air and apply full
throttle for 30 seconds. If a trimmer head is used,
make sure that the trimmer line is cut to correct
length by the guard knife.
Note: Do not cut grass or branches during this step.
5. Operate the product in usual conditions to make sure
that the engine operates correctly.
6. If the engine does not operate correctly, do step 4
and 5 again 3 times.
7. Let your Husqvarna dealer adjust/repair the product
if the engine does not operate correctly after you
have done all these steps.
To sharpen the grass knife and grass
blade
WARNING: Stop the engine. Use protective
gloves.
• To sharpen the grass knife or grass blade correctly,
refer to the instructions that come with the cutting
attachment.
• Sharpen all edges equally to keep the balance.
• Use a single-cut flat file.
WARNING: Always discard a blade that is
damaged. Do not try to make a bent or
twisted blade straight and use it again.
22
To lubricate the flexible drive shaft
1. Pull up the knob and remove the drive shaft sleeve
from the clutch cover.
a) Shake or pull the drive shaft out of the drive shaft
sleeve.
2. Lubricate the drive shaft.
3. Push and turn the drive shaft at the same time to put
it back in the drive shaft sleeve. Keep approximately
10 mm / 0.40 in. of the drive shaft outside the edge
of the drive shaft sleeve.
1099 - 001 - 01.03.2019