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SIGNALLING ON THE CHARGER (FIG. 36A)
• Charging is in progress - the light is red.
• The battery is fully charged - the light is green.
DISMANTLING, SHARPENING AND BALANCING THE BLADE
WARNING!B Be sure to disconnect and ground the spark plug wire before
working on the cutting blade to prevent accidental engine starting. Protect hands by
using heavy gloves or a rag to grasp the cutting blades.
C All operations on the blade (dismantling, sharpening, balancing, remounting and/
or replacing) require a certain familiarity and special tools. For safety reasons, go to
a specialized centre if you do not have the right tools or experience.
1. Check that the blade is sharpened properly and firmly fixed to the bracket. A badly sharpened
blade pulls at the grass and causes the lawn to turn yellow. A loose blade causes unusual
vibrations and can be dangerous.
2. To remove the blade, hold it firmly wearing strong gloves and undo the central screw in
direction of arrow (fig. 37).
Sharpen the two cutting edges using a medium grade grinding wheel and check the balance
using a blade balancer.
We recommend to have a blade professionally sharpened and balanced in an authorized service
center.
CAUTION!A Always replace the damaged blade; never try to repair it! ALWAYS
USE MANUFACTURER´ GENUINE REPLACEMENT BLADES BEARING
C When re-fitting the blade, always follow the indicated sequence, making sure
that the blade’s wings are facing towards the interior of the cutting deck and that
the concave part of the cup spring (fig. 38A) is pressing against the blade.
Tighten the fixing screw (fig. 38B) using a torque wrench. The screw is tightened by force listed
in the Specifications. If the knife carrier (fig. 38C) came off when dismantling the blade, make
sure that the gusset (fig. 38D) is firmly in its right position.
CAUTION!A It can cause damage of machine when operating the machine with
an unbalanced blade.
ENGINE MAINTENANCE
PRECAUTIONS DURING ENGINE MAINTENANCE
• Make sure the engine is off before you begin any maintenance or repairs. This will eliminate
several potential hazards:
- Carbon monoxide poisoning from engine exhaust - be sure there is adequate ventilation
whenever you operate the engine.
- Burns from hot parts - let the engine and exhaust system cool before touching.
- Injury from moving parts.
manual_HECHT_5161_2019_EN.indd 52 11.03.2019 10:29:46
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