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1.
INTRODUCTION
North American distribution rights to the McCulloch
product line are new to MTD for the 2004 season. The
trimmers are similar in some ways to the MTD South-
West (RYOBI) products that we have offered for the
past three years.
The architecture of both units is based on a cantilever
crankshaft. The McCulloch is piston ported, while the
MTDSW engine has a reed valve. Some of the service
techniques are similar, but not identical.
2.
TRIMMER HEADS
2.1.
One trimmer head available on the McCulloch
products is nearly identical to the MTDSW Tap-
N-Go. The operating principle is the same, but
the parts are different enough that they are not
fully interchangeable. See Figure 2.1.
McCulloch version
of small
tap-n-go
Figure 2.1
2.2.
There is also a McCulloch version of the large
tap-n-go head. It is used on the straight shaft
trimmers, and rotates in the opposite direction of
the small one.
McCulloch 32cc Trimmer
1
2.3.
Another trimmer head that is used on McCulloch
string trimmers resembles a cross between the
MTDSW Speed Spool and the MTDSW Tap-N-
Go head.
McCulloch trimmer head with
simplified loading
Figure 2.3
2.4.
A refill consists of 15' - 20' of .080" trimmer line.
2.5.
To install line, cut it to length. Two equal-length
half-portions may be used, or one full length line
may be installed, then trimmed after installation.
See Figure 2.5.
Single-length method
Figure 2.5
See Figure 2.3.
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