Possible Cause - Viking MR 4082 Gebrauchsanleitung

Fault:
Excessive vibration during operation.

Possible cause:

– Mowing blade imbalance due to
incorrect sharpening or damage.
– The blade fastening screw is not
fastened tightly.
– The engine mounting is not fastened
tightly.
– V-belt is damaged.
– Discharge chute is blocked.
Remedy:
– Re-sharpen the mowing blade and
balance or replace the mowing blade.
( 13.7)
– Tighten the blade fastening screw to the
specified torque. ( 13.7)
– Tighten engine mounting. ( )
– Replace the V-belt. ( )
– Clean the discharge chute. ( )
Fault:
Poor cut, lawn turns yellow after mowing.
Possible cause:
– Mowing blade blunt or worn.
– The driving speed is too fast in relation
to the mowing conditions (cutting
height, lawn condition).
– Maximum engine speed not set (throttle
lever not in MAX position)
– Mowing deck adjustment not OK.
– Discharge chute is blocked.
– The mowing deck is soiled with grass
residues (deposits on inside of mowing
deck housing).
Remedy:
– Sharpen or replace the mowing blade
(observe wear limits). (
– Reduce the driving speed and select a
higher cutting height.
124
– Set the throttle lever to the MAX
position. (
– Check the mowing deck adjustment
and re-adjust the mowing deck if
necessary. (
– Remove the grass catcher box and free
the discharge chute from grass
residues.
– Clean the inside of the mowing deck.
Fault:
Discharge chute is blocked.
Possible cause:
– Mowing blade wing worn or damaged.
– Mowing grass which is too long or too
wet.
– The driving speed is too high in relation
to the set cutting height.
– Maximum engine speed not set (throttle
lever not in MAX position)
– Level sensor adjusted incorrectly.
Remedy:
– Replace the mowing blade. (
– Mow the lawn in two stages:
1. Mowing at the highest cutting level,
2. Mowing at the desired cutting height.
– Reduce the driving speed and select a
higher cutting height.
– Set the throttle lever to the MAX
position. (
– Adjust the level sensor (pull slide out
fully). (
Fault:
Grass catcher box not being completely
filled.
Possible cause:
– Level sensor incorrectly adjusted.
13.7) – Cutting height set too low.
8.2)
13.8)
13.7)
8.2)
8.14)
– Grass is excessively damp and
consequently too heavy to be
transported through the discharge
chute in the grass catcher box.
– Mowing blade is blunt or worn.
– Grass is too high.
– Air holes in the grass catcher box
blocked (no air flow in grass catcher
box).
– Discharge chute or mowing deck
(inside) soiled through deposited grass
residues (residue from last mowing
operation).
Remedy:
– Adjust level sensor. (
– Set a higher cutting height.
– Wait until the lawn is dry.
– Sharpen or replace the mowing blade.
( 13.7)
– Mow the lawn in two stages:
1. Mowing at the highest cutting level,
2. Mowing at the desired cutting height.
– Clean the grass catcher box (clean air
holes).
– Clean discharge chute or inside of
mowing deck.
Fault:
Level sensor (grass catcher box) does not
respond properly.
Possible cause:
– Level sensor (grass catcher box) soiled
through grass residues.
– Level sensor (grass catcher box)
incorrectly adjusted.
– Driving speed too high.
Remedy:
– Clean the level sensor and check for
ease of movement.
– Adjust level sensor (grass catcher box).
( 8.14)
– Adapt driving speed to the mowing
conditions (reduce driving speed).
0478 193 9901 A - EN
8.14)