Maintenance Instructions; Vertical Cutting - McCulloch MXC1640DK User Manual

6 - GENERAL CUTTING INSTRUCTIONS
6-2. LIMBING
Limbing a tree is the process of removing the branches
from a fallen tree. Do not remove supporting limbs (A) until
after the log is bucked (cut) into lengths (Figure 6-2A).
Branches under tension should be cut from the bottom up
to avoid binding the chain saw.
WARNING
Never cut tree limbs while standing on tree trunk.
A
6-2A
6-3. BUCKING
Bucking is cutting a fallen log into lengths. Make sure you
have a good footing and stand uphill of the log when cutting
on sloping ground. If possible, the log should be supported
so that the end to be cut off is not resting on the ground. If
the log is supported at both ends and you must cut in the
middle, make a downward cut halfway through the log and
then make the undercut. This will prevent the log from
pinching the bar and chain. Be careful that the chain does
not cut into the ground when bucking as this causes rapid
dulling of the chain.
When bucking on a slope, always stand on the uphill side.
1. Log supported along entire length: Cut from top (over-
buck), being careful to avoid cutting into the ground
(Figure 6-3A).
2. Log supported on 1 end: First, cut from bottom (under-
buck) 1/3 diameter of log to avoid splintering. Second,
cut from above (overbuck) to meet first cut and avoid
pinching (Figure 6-3B).
3. Log supported on both ends: First, overbuck 1/3 diam-
eter of log to avoid splintering. Second, underbuck to
meet first cut and avoid pinching (Figure 6-3C).
NOTE: The best way to hold a log while bucking is to use a
sawhorse. When this is not possible, the log should be
raised and supported by the limb stumps or by using sup-
porting logs. Be sure the log being cut is securely support-
ed.
6-3A
6-3B
6-3C
6-4.BUCKING USING A SAWHORSE
For personal safety and ease of cutting, the correct position
for vertical bucking is essential (Figure 6-4A).

VERTICAL CUTTING:

A. Hold the saw firmly with both hands and keep the saw
to the right of your body while cutting.
B. Keep the left arm as straight as possible.
C. Keep weight on both feet.
CAUTION
While the saw is cutting, be sure the chain and bar are
being properly lubricated.
B
A
C
6-4A
14

7 - MAINTENANCE INSTRUCTIONS

All chain saw service, other than items listed here in your user manual maintenance
instructions, should be performed by your nearest Authorized Service Center.
7-1.PREVENTIVE MAINTENANCE
A good preventive maintenance program of regular inspection and care will increase life and improve performance of your
McCulloch chain saw. This maintenance checklist is a guide for such a program.
Cleaning, adjustment, and parts replacement may be required, under certain conditions, at more frequent intervals than those
indicated.
MAINTENANCE CHECKLIST
ACTION
ITEM
SCREWS / NUTS / BOLTS INSPECT / TIGHTEN
AIR FILTER CLEAN OR REPLACE
FUEL FILTER / OIL FILTER REPLACE
SPARK PLUG CLEAN / ADJUST / REPLACE
INSPECT
SPARK ARRESTER SCREEN
REPLACE AS REQUIRED
INSPECT
FUEL HOSES
*REPLACE AS REQUIRED
INSPECT
CHAIN BRAKE ® COMPONENTS
*REPLACE AS REQUIRED
*Recommended for Maintenance by a Authorized Service Center Technician.
HOURS OF
OPERATION
EACH USE
10







15
20