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P n e u m a t i c
C h a i n S a w
5 1 0 2 6 – 5 1 0 2 9
51026_51029_BA_en_Version_05
Page
22
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34
Maintenance of chain brake
The chain brake is subjected to normal wear. For serving a good performance, it has to be maintained
by well trained personnel (e.g. service) at regular intervals:
Professional fulltime work
every three months
Half-professional (Agriculture & Construction)
twice a year
Hobby and free-time user
once a year
Keeping the bar proper
Turn over the bar after every sharpening of the chain or replacing the chain to avoid wear
out on one side only especially at the return steering at the underside.
Clean regularly
1 = Oil inlet hole
2 = Oil outlet port
3 = Bar groove
During the first period of operation
Always pay attention to:
Opening of valve only with released chain brake. Opening of valve at blocked chain brake (chain is
stalled) causes in a short time damages on the chain drive (chain brake).
During operation
Check tension of chain more often!
A new chain has to be adjusted more often than one that is in use for longer time!
In cold state:
The chain must lean against the bottom side of the bar but it has to be still pulled around the bar by
hand. If necessary, adjust tension of the chain again. Paragraph “Tensioning the chain“!
With operating temperature:
The chain stretches and slacks. The drive links at the bottom side of the bar shall not come out of the
groove. Otherwise the chain can spring out.
Adjust tension of the chain, paragraph „Tensioning the chain“!
After work it is important to relieve tension! During cooling the chain shrinks. A chain which is not
relieved from tension can possibly damage the rotor shaft and the bearing.
After operation:
Relieve tension of chain, if it was tensioned during work at operation temperature.
CS Unitec, Inc.
• Toll-free: 800-700-5919 • Ph: 1-203-853-9522 • Email: [email protected] •
www.csunitec.com
Translation of the original manual
compiled: 20.04.16