Correcting The Cutting Unit Mismatch; Miscellaneous Maintenance; Servicing The Spark Arrestor Muffler; Cleaning The Cab Air Filters - Toro 31598 Operator's Manual

the anti-scalp cup and blade bolt; refer to Removing and
Installing the Cutter Blade(s).
Correcting the Cutting Unit
Mismatch
If there is mismatch between the blades, on a single cutting
unit, the grass will appear streaked when it is cut. This
problem can be corrected by making sure that the blades are
straight.
1. Using a 3 foot (1 meter) long carpenters level, find a
level surface on the shop floor.
2. Raise the height-of-cut to the highest position; refer to
Adjusting the Height-of-Cut (page
3. Lower the cutting unit onto the flat surface. Remove
the covers from the top of the cutting unit.
4. Rotate the blades until the ends face forward and
backward. Measure from the floor to the front tip of
the cutting edge. Record this dimension. Then rotate
the same blade so that the opposite end is forward, and
measure again. The difference between the dimensions
must not exceed 3 mm (1/8 inch). If the dimension
exceeds 3 mm (1/8 inch), replace the blade because it
is bent. Make sure to measure all of the blades.
5. Check that deck is level side to side and adjust as
required.
6. Install the belt covers.
Miscellaneous
Maintenance
Servicing the Spark Arrestor
Muffler
Service Interval: Every 250 hours—Service the spark
Every 250 hours operation, clear the muffler of carbon
buildup.
29).

Cleaning the Cab Air Filters

Service Interval: Every 250 hours (Replace them if they are
63
arrestor.
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.
torn or excessively dirty.)
1. Remove the screws and grates from over both the
in-cab and rear cab air filters (Figure 103).