Cleaning The Guide Bar - Dolmar 109 HappyStart Instruction Manual

E
Chain 086 (.325")
Sharpening angle α
Front rake β
The sharpening angle (α) must be identical for all cutters!
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Different angles result in a roughly, irregularly running chain,
increase wear and tear and cause chain beakage.
The front rake (β) of the cutter results from the cut depth of
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the round Þ le. If the proper Þ le is used in the right manner,
the correct front rake will be obtained automatically.
α
G
- The Þ le holder makes Þ le guidance easier. It is marked for
the correct α sharpening angle (keep the marks parallel with
the chain when Þ ling, see illustration) and limits the cut depth
to the correct 4/5 of the Þ le diameter. See "Accessories" for
the order number.

Cleaning the guide bar

CAUTION:
Protective gloves must be worn!
J
Regularly inspect the bearing surfaces of the guide bar for
damage, and clean them with a suitable tool.
18
093 (3/8") 099 (3/8")
30° 35°
85° 85°
F
Files and how to work with them
- Sharpen using a special Þ le holder with a saw chain round Þ le:
25°
- 086 (.325") chain: File the Þ rst cutter half with a 4.8 mm dia.
60°
round saw-chain Þ le, then switch to a 4.5 mm dia. Þ le.
- 093 (3/8") and 099 (3/8") chain: File the Þ rst cutter half
with a 5.5 mm dia. round saw-chain Þ le, then switch to a
4.8 mm dia. Þ le.
Normal round Þ les are not appropriate for this work. See
"Accessories" for the order number.
- The Þ le should cut only when pushed forwards (arrow). Lift
the Þ le when leading it backwards.
- First sharpen the shortest cutter. The length of this cutter is
then the standerd for all other cutters of the chain.
4/5 - Always guide the Þ le as in Fig. F shown (chain 086 (.325"),
099 (3/8") = 10° and 093 (3/8") = 90°).
1
H
- After having sharpened the chain, the height of the depth
limiter must be checked by means of a chain gauge. See
"Accessories" for the order number.
- Correct even the smallest excess height with a special ß at
Þ le (1). See "Accessories" for the order number.
- Round off the front of the depth limiter (2).
Chain: 093 (3/8")
I
099 (3/8"), 086 (.325")
2