Correcting A Mower-Deck Mismatch; Miscellaneous Maintenance; Servicing The Spark-Arrestor Muffler - Toro Groundsmaster 5910 Operator's Manual

Figure 101
1. Sharpen at the original angle.
Note: Sharpen only the top of the cutting edge
and maintain the original cutting angle to ensure the
sharpness.
Note: The blade will remain balanced if the same
amount of metal is removed from both cutting edges.
Note: Remove the blades and sharpen them on a grinder.
After sharpening the cutting edges, install the blade with
the anti-scalp cup and blade bolt; refer to
Installing a Blade (page 62).
Correcting a Mower-Deck
Mismatch
When there is mismatch between the blades on a single
mower deck, the grass appears streaked when it is cut. You
can correct this problem by ensuring that the blades are
straight.
1. Using a 1 m (3 ft) long carpenter's 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 mower deck onto a flat surface and remove
the covers from the top of the mower deck.
4. Rotate the blades until the ends face forward and
backward.
5. Measure from the floor to the front tip of the cutting
edge (record this dimension).
6. Rotate the same blade, so that the opposite end is
forward and measure it again.
Note: 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.
Measure all the blades.
7. Ensure that the deck is level from side to side and
adjust as required.
8. Install the belt covers.
Miscellaneous
Maintenance
Servicing the Spark-Arrestor
Muffler
Service Interval: Every 250 hours—Service the spark
Removing and
27).
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 and plug the normal muffler exit with a
block of wood or metal plate so that the exhaust flow is
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. Shut off the engine and replace the pipe plug.