Dolmar PS-7910 Benutzerhandbuch

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MAINTENANCE
Sharpening the saw chain
CAUTION: Before doing any work on the guide bar or chain, 
always switch off the engine and pull the plug cap off the 
spark plug (see "Replacing the spark plug"). Always wear 
protective gloves!
The chain needs sharpening when:
The  sawdust  produced  when  sawing  damp  wood  looks  like 
wood flour.
The chain penetrates the wood only under great pressure. 
The cutting edge is visibly damaged.
The saw is pulled to the left or right when sawing. This is caused 
by uneven sharpening of the chain.
Important: Sharpen frequently, but without removing too 
much metal!
Generally, 2 or 3 strokes of the file will be enough.
Have the chain resharpened at a service center when you have 
already sharpened it yourself several times.
A
Proper sharpening:
CAUTION: Use only chains and guide bars designed for 
this saw (see the Extract from the spare-parts list)!
All cutters must be of the same length (dimension a). Cutters 
with different lengths result in rough running of the chain and 
can cause cracks in the chain.
The minimum cutter length: 0.11"(3 mm). Do not resharpen the 
chain when the minimum cutter length has been reached; at 
this point, the chain must be replaced (see the Extract from the 
spare-parts list and "Replacing the saw chain").
The depth of the cut is determined by the difference in height 
between the depth limiter (round nose) and the cutting edge.
The  best  results  are  obtained  with  a  depth-limiter  depth  of  
.025" (0.64 mm).
CAUTION: Excessive depth 
 
 
 
increases the risk of kickback!
.025"
(0.64 mm)
.025"
(0.64 mm)
B
min.
 
3 mm (0.11”)
11
F
Handle heating
(only on “H” model saws)
The electrically heated handles are activated by pushing the 
switch (11).
On:  red marking on switch visiable
Off:  red marking on switch not visiable
ON
OFF