F-550
2.5.5.2 Replacing the V-belt
Always replace the V-belt
with a new one whenever the belt shows signs of cracking or tearing and whenever the belt is so worn that it
can no longer be tightened using tensioners. The exact procedure for changing the belt is not included here because it would exceed the
scope of this manual. When replacing, follow the instructions given in
Pic.9
Ensure that the belt path around all leading
components is followed!
If you are not sufficiently technically competent, assign this task to a professional service centre.
2.5.5.3 Checking brake operation and adjusting the brake
Check the operation of the automatic brake after every 10 hours of use. You can perform regular checks when working.
Whenever the
tool drive clutch lever is released, the automatic brake must stop the rotating work tool within 5 seconds.
Do not continue working unless you repair the defect on the automatic brake!
If you are not sufficiently technically competent, assign this task to a professional service centre.
If the brake does not stop the rotating tool within the specified time, the brake cable
B
on
Pic.11
adjustment screw is attached on the brake cable (
B
on
Pic.12
) to the frame, should be turned in the opposite direction of the arrow
(towards the frame) so that the axial clearance of the cable in the adjustment screw is 1 mm. Check the operation of the automatic brake.
If the screw
B
when fully tightened does not achieve sufficient braking, screw in the brake cable adjustment screw (
B
on
Pic.14
) on the
handlebars so the cable axial clearance in the adjustment screw is 1 mm and subsequently recheck the operation of the automatic brake
If the brake fails to brake sufficiently even after adjustment, contact a professional service centre. Do not
continue operating the machine without a functional brake under any circumstances!
2.5.6 Servicing intervals
Activity
Before use
During the season
Before storing
Check the engine oil level
yes
according to the engine operating manual
yes
Clean the engine air filter
check
every 10 hrs
yes
Washing
-
2x
yes
Removing impurities and cut vegetation remnants
-
after each cutting
yes
Sharpening the tool blades
check
as needed
yes
Checking the blade mounting
yes
immediately replace if damaged
yes
Checking the tightness of the work tool (blade)
yes
-
yes
Check the tightness of screw connections
yes
every 5 hrs.
yes
Lubrication
inspect condition
yes
Check V-belts
-
every 20 hrs.
yes
Table 7: Service intervals
2.5.7 Problems and troubleshooting
Problem
Cause
Solution
The work tool does not turn
Engine is not started
Start the engine
The drive clutch lever is not depressed
Depress the lever
The belt is loose
Adjust the tensioner
Broken belt
Replace the belt with a new one
Belt slid off
Seat the belt
Other defect
Contact the service centre
Machine does not move
Engine is not started
Start the engine
The drive clutch lever is not depressed
Depress the lever
The belt is loose
Adjust both tensioners
Broken belt
Replace the belt with a new one
Belt slid off
Seat the belt
Other defect
Contact the service centre
70
Use exclusively genuine replacement parts. Proper gear function cannot be guaranteed when using V-belts from different manufacturers.
71
May be performed in the opposite way – first screw in (towards the handlebar traverse) Brake bowden cable screw on the handles so the axial clearance is 1 mm in the adjustment
screw.
72
In highly dusty conditions, check and clean every hour!
28
02
/2
01
3
