Makita BBC231U Instruction Manual page 14

Installing the cutter blade
WARNING:
The outside diameter of the cutter blade must
•
be 230 mm. Never use any blade exceeding 230
mm in outside diameter.
CAUTION:
The cutter blade must be well polished, free of
•
cracks or breakage. Polish or replace the cutter
blade every three hours of operation.
Always wear gloves when handling the cutter
•
blade.
Always attach the blade cover when the tool is not
•
in use or is being transported.
The cutter blade-fastening nut (with spring
•
washer) is a consumable part. If there appears
any wear or deformation on the spring washer,
replace the nut. Ask your local authorized service
center to order it.
NOTICE:
Be sure to use genuine Makita cutter blade.
•
Turn the tool upside down so that you can replace the
cutter blade easily.
2
1
010756
To dismount the cutter blade, insert the hex wrench
through the hole on the protector cover and gear case.
Rotate the receive washer until it is locked with the hex
wrench. Loosen the hex nut (left-hand thread) with the
socket wrench and remove the nut, cup, clamp washer
and hex wrench.
1
010757
Mount the cutter blade onto the shaft so that the guide
of the receive washer fits in the arbor hole in the cutter
blade. Install the clamp washer, cup, and secure the
1. Hex wrench
6
2. Receive washer
5
3. Cutter blade
4
4. Clamp washer
3
5. Cup
6. Hex nut
1. Hex wrench
cutter blade with the hex nut with 13 to 23 Nm of
tightening torque during holding the receive washer with
hex wrench.
010758
Make sure that the blade is the left way up.
Installing nylon cutting head
CAUTION:
Only use the nylon cutting head with the guard
•
and guard extension in place. Failure to do so
can cause serious personal injury.
NOTICE:
Be sure to use genuine Makita nylon cutting head.
•
Turn the tool upside down so that you can replace the
nylon cutting head easily.
3
1
2
010769
Insert the hex wrench through the hole on the protector
cover and the gear case and rotate the receive washer
until it is locked with the hex wrench. Mount the nylon
cutting head onto the threaded spindle directly and
tighten it by turning it counterclockwise. Remove the
hex wrench.
To remove the nylon cutting head, turn the nylon cutting
head clockwise while holding the receive washer with
the hex wrench.
CAUTION:
If during operation the nylon cutting head
•
accidentally impacts a rock or hard object the
trimmer should be stopped and inspected for
any damage. If the nylon cutting head is
damaged it should be replaced immediately.
Use of a damaged nylon cutting head could result
in serous personal injury.
14
1. Threaded
spindle
2. Hex wrench
3. Receive washer