HT 105, HT 134, HT 135
English
27
N Turn the bar over – every time you
sharpen the chain and every time
you replace the chain – this helps
avoid one-sided wear, especially at
the nose and underside of the bar
N Regularly clean the oil inlet hole (1),
the oilway (2) and the bar
groove (3)
N Measure the groove depth – with the
scale on the filing gauge (special
accessory) – in the area used most
for cutting
If groove depth is less than specified:
N Replace the guide bar
The drive link tangs will otherwise
scrape along the bottom of the groove –
the cutters and tie straps will not ride on
the bar rails.
Filters have an average life of more than
a year. Do not remove the filter cover or
replace the air filter as long as there is no
noticeable loss of power.
If there is a noticeable loss of engine
power
N Turn the choke knob to g.
N Loosen the screws (1).
N Remove the filter cover (2).
N Clean away loose dirt from around
the filter.
N Remove the filter element (3).
N Replace dirty or damaged filter
element (3).
N Replace any damaged parts.
Installing the Filter Element
N Install the filter element (3) in the
filter housing and fit the cover.
N Insert the screws (1) and tighten
them down firmly.
Taking Care of the Guide Bar
Chain type Chain pitch Minimum
groove depth
Picco 3/8" P 5.0 mm
Picco 1/4" P 4.0 mm
0000097197_001
3
2
1
Replacing the Air Filter