Instructions For Periodic Maintenance; Replacing Carbon Brushes - Makita DUC121 Bedienungsanleitung

Insert the cleaned oil filter into the oil discharge hole.
When the filter is too dirty, replace it with a new one.
► Fig.30: 1. Push nut
Insert the push nut with its correct side facing up as
shown in the figure into the oil discharge hole to secure
the filter. When the filter cannot be secured with a disfig-
ured push nut, replace the push nut with a new one.
Reinstall the sprocket cover and saw chain on the tool.
Replacing the sprocket
Before fitting a new saw chain, check the condition of
the sprocket.
► Fig.31: 1. Sprocket 2. Locking ring
CAUTION:
• A worn sprocket will damage a new saw chain.
Have the sprocket replaced in this case. The
sprocket need to be installed so that it always
faces as shown in the figure.
► Fig.32: 1. Locking ring 2. Sprocket 3. Washer
Always fit a new locking ring when replacing the
sprocket.

Instructions for periodic maintenance

To ensure long life, prevent damage and ensure the full functioning of the safety features the following maintenance
must be performed regularly.
Warranty claims can be recognized only if this work is performed regularly and properly. Failure to perform the pre-
scribed maintenance work can lead to accidents!
The user of the chain saw must not perform maintenance work which is not described in the instruction manual. All
such work must be carried out by authorized service centre.
Operating
time
Item
Inspection.
Cleaning.
Chain saw
Check at authorized service
center.
Inspection.
Saw chain
Sharpening if necessary.
Inspection.
Guide bar
Remove from the chain
saw.
Chain lubrication Check the oil feed rate.
Switch trigger Inspection.
Lock-off button Inspection.
Oil tank cap
Check tightness.
Chain catcher Inspection.
Screws and nuts Inspection.

Replacing carbon brushes

► Fig.33: 1. Limit mark
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps.
Take out the worn carbon brushes, insert the new ones
and secure the brush holder caps.
► Fig.34: 1. Brush holder cap 2. Screwdriver
Storing tool
Clean the tool before storing. Remove any chips and
sawdust from the tool after removing the sprocket cover.
After cleaning the tool, run it under no load to lubricate
the saw chain and guide bar.
Cover the guide bar with the scabbard.
Remove oil from the oil tank to empty it and place the
chain saw with the tank cap facing upward.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
Before Every
Everyday
operation week
15 ENGLISH
Every 3 Before
Annually
month storage