Spark Arrestor Maintenance; Servicing The Spark Arrestor Muffler - Toro 30412 Groundsmaster 4000-D Operator's Manual

forward, and measure again. The difference between
the dimensions must not exceed 1/8 inch (3 mm).
If the dimension exceeds 1/8 inch (3 mm), replace
the blade because it is bent. Make sure to measure
all of the blades.
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.
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.
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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