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6. Compare the measurements of the outer blades with
the center blade. The center blade must not be more
than 3/8 inch (10 mm) lower than the outer blades. If
the center blade is more than 3/8 inch (10 mm) lower
than the outer blades, proceed to step 7 and add shims
between the spindle housing and the bottom of the
cutting unit.
7. Remove the bolts, flat washers, lock washers, and nuts
from the outer spindle in the area where the shims
must be added. To raise or lower the blade, add a shim,
Part No. 3256-24, between the spindle housing and
the bottom of the cutting unit. Continue to check the
alignment of the blades and add shims until the tips of
the blades are within the required dimension.
Important: Do not use more than three shims at
any one hole location. Use decreasing numbers of
shims in adjacent holes if more than one shim is
added to any one hole location.
8. Adjust the idler pulley and install the belt covers.
Spark Arrestor
Maintenance
Servicing the Spark Arrestor
Muffler
Service Interval: Every 200 hours
Every 200 hours operation, clear the muffler of carbon
buildup.
1. Remove the pipe plug from the clean-out port at the
lower side of the muffler.
CAUTION
The muffler may be hot and could cause
injury.
Be careful while working around the muffler.
2. Start the engine. Plug the normal muffler exit with a
block of wood or metal plate so that the exhaust flow
will be forced out of the clean-out port. Continue to
block the exit until carbon deposits cease coming out
of the port.
CAUTION
Do not stand in line with the clean-out port.
Always wear safety glasses.
3. Stop the engine and replace the pipe plug.
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