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OPERATING INSTRUCTIONS
BLOCKAGES
Always be aware that what you are putting into the chipper must come
out. If the chips stop coming out of the discharge tube but the chipper
is taking material in STOP IMMEDIATELY. Continuing to feed material
into a blocked machine may cause damage and will make it difficult to
clear. If the chipper becomes blocked, proceed as follows:
•
Stop the engine and remove the ignition keys.
•
Remove the discharge tube. Check that it is clear.
•
Wearing gloves, reach into the rotor housing and scoop out the
majority of the debris causing the blockage.
•
Replace the discharge tube.
•
Restart the engine and increase to full speed.
Allow the machine time to clear excess chips still remaining in rotor housing before you continue feeding brushwood.
Feed in a small piece of wood while watching to make sure that it comes out of the discharge. If this does not clear it,
repeat the process and carefully inspect the discharge tube to find any obstruction.
NOTE
Continuing to feed the chipper with brushwood once it has become blocked will cause the chipper to compact the chips
in the rotor housing and it will be difficult and time consuming to clear.
AVOID THIS SITUATION - WATCH THE DISCHARGE TUBE AT ALL TIMES.
BLADE WEAR
The most important part of using a wood chipper is keeping the cutter blades sharp. Timberwolf chipper blades are hollow
ground to an angle of 40 degrees. When performing daily blade checks ensure blade edge is sharp and free from chips, if
there is any evidence of damage, or the edge is "dull" change the blade(s). The TW 280TDHB/(a) is fitted with 2 blades
158mm (6") long. They are 100mm wide when new. A new blade should chip for up to 25 hours before it requires
sharpening. This figure will be drastically reduced by feeding the machine with stony, sandy or muddy material.
As the blade becomes blunt, performance is reduced. With increased stress and load on the machine the chips will become
more irregular and stringy. At this point the blade should be sent to a reputable blade sharpening company. The blade
can be sharpened several times in its life. A wear mark indicates the safe limit of blade wear. Replace when this line is
exceeded.
The machine is also fitted with a static blade (anvil). It is important that the anvil is in good condition to allow the cutting
blades to function efficiently. Performance will be poor even with sharp cutter blades if the anvil is worn.
HYDRAULIC OIL LEVEL INDICATOR
The oil level will be visible through the tank wall. It should be within the upper and lower
level marks. Refer to filling and draining instructions on page 20.
FUEL LEVEL INDICATOR
The fuel level can be seen through the wall of the fuel tank.
REFUELLING
When refuelling, follow standard Health & Safety practices:
•
Stop the engine and allow it to cool before refuelling.
•
Never smoke or allow naked flames nearby while refuelling.
•
Store fuel away from vapour ignition sources such as fires and people
smoking.
•
Never refuel at operating location, keep a distance of > 10 m to avoid creating fire hazards.
•
Fuel storage containers must be approved for appropriate fuel storage and clearly labelled with securely fitting caps.
•
Clean the area around the fuel cap and use a funnel for refuelling. Replace the fuel cap securely. Do not fill the tank
beyond the max. fill indicator.
•
Avoid skin contact with fuel. If it gets into eyes wash out with sterile water immediately and seek medical advice as
soon as possible.
•
Always clean spillages quickly and change clothes before re-entering the work area if fuel is spilled onto garments.
C190-0142
13 / 65
01.03.2019
TW 280TDHB/(a)
Rev: 2.0
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