Stihl RMA 339 Instruction Manual page 60

Fault:
Motor stops during operation
Possible cause:
– lawn mower overheated – 3 LEDs
illuminate red on battery
– Electrical fault
– Safety plug incorrectly inserted
– Machine overloaded due to mowing
grass that is too long or too wet
– Lawn mower fault
Remedy:
– Allow lawn mower to cool down
– Remove and re-insert battery (
– Insert safety plug ( 9.2)
– Adapt cutting height and mowing speed
to mowing conditions (
– Repair lawn mower ( )
Fault:
Excessive vibration during operation
Possible cause:
– Blade fastening screw is loose
– Blade is not balanced
Remedy:
– Tighten blade fastening screw (
– Re-sharpen (balance) or replace blade
( 13.8)
Fault:
Poor cut, lawn turning yellow
Possible cause:
– Mowing blade is blunt or worn,
– Rate of feed is too high in relation to the
cutting height
Remedy:
– Re-sharpen or replace mowing blade
( 13.8)
– Reduce rate of feed and/or select
correct cutting height (
58
Fault:
Problems switching machine on or
deteriorating motor power.
Possible cause:
– Battery discharged
– Mowing grass that is too long or too wet
– Mower housing is blocked
– Mowing blades are blunt or worn
Remedy:
– Recharge battery (
– Adapt cutting height and mowing speed
to mowing conditions (
8.3) – Clean mower housing (
– Re-sharpen or replace mowing blade
( 13.8)
9.6)
Fault:
Machine not switching to eco mode
Possible cause:
– Mower housing is blocked
– Mowing blade is blunt, worn or
damaged
Remedy:
– Clean mower housing (
13.7) – Re-sharpen or replace mowing blade
( 13.7)
Fault:
Discharge chute blocked
Possible cause:
– Mowing blade is worn
– Mowing grass which is too long or too
wet
Remedy:
– Replace mowing blade (
– Adapt cutting height and mowing speed
to mowing conditions (
9.6)
Fault:
Operating time too short
Possible cause:
– Battery not fully charged
– Mowing grass that is too long or too wet
– Mower housing is blocked
– Mowing blades are blunt or worn
– Battery has exceeded service life
Remedy:
8.4) – Recharge battery (
– Adapt cutting height and mowing speed
9.6) to mowing conditions (
13.2) – Clean mower housing (
– Re-sharpen or replace mowing blade
(
– Replace battery ( )
Fault:
Battery gets stuck when inserting into
battery compartment
Possible cause:
– Guides or electric contacts in battery
compartment dirty
13.2) Remedy:
– Clean guides and/or electric contacts in
battery compartment (
Fault:
Battery is not charged although the green
LED on the charger illuminates green
Possible cause:
– Battery too cold or overheated (one red
LED illuminates on battery)
Remedy:
13.8) – Warm up or cool down the battery
(
9.6) dry place at a temperature of between
+5°C and +40°C.
8.4)
9.6)
13.2)
13.8)
13.2)
8.4). Store the charger in a closed,
0478 131 9927 C - EN