Maintenance And Repair Instructions - Troy-Bilt TB590 EC Operator's Manual

MAINTENANCE AND REPAIR INSTRUCTIONS

WINDING THE EXISTING INNER REEL
1. Hold the outer spool with one hand and unscrew the Bump
Knob clockwise (Fig. 28). Inspect the bolt inside the bump
knob to make sure it moves freely. Replace the bump knob
if damaged.
2. Remove the inner reel from the outer spool (Fig. 28).
3. Remove spring from the inner reel (Fig. 28).
4. Use a clean cloth to clean the the inner reel, spring, shaft
and inner surface of the outer spool (Fig. 29).
5. Check the indexing teeth on the inner reel and outer spool
for wear (Fig. 30). If necessary, remove burrs or replace the
reel and spool.
NOTE: Always use the correct line length when installing
trimming line on the unit. The line may not release
properly if the line is too long.
SINGLE LINE INSTALLATION
Go To Step 8 for SplitLine™ Installation
6. Take approximately 18 feet (6 m) of new trimming line, loop
it into two equal lengths. Insert each end of the line through
one of the two holes in the inner reel (Fig. 31). Pull the line
through the inner reel so that the loop is as small as
possible.
7. Wind the lines in tight even layers, onto the reel (Fig. 32).
Wind the line in the direction indicated on the inner reel.
Place your index finger between the two lines to stop the
lines from overlapping. Do not overlap the ends of the line.
Proceed to step 11.
SPLITLINE™ INSTALLATION
8. Take approximately 9 feet (3 m) of new trimming line. Insert
one end of the line through one of the two holes in the inner
reel (Fig. 33). Pull the line through the inner reel until only
about 4 inches is left out.
9. Insert the end of the line into the open hole in the inner reel
and pull the line tight to make the loop as small as possible
(Fig. 34).
10. Before winding, split the line back about 6 inches.
11. Wind the line in tight even layers in the direction indicated
on the inner reel.
NOTE: Failure to wind the line in the direction indicated will
cause the cutting attachment to operate incorrectly.
12. Insert the ends of the line into the two holding slots (Fig. 34).
13. Insert the ends of the line through the eyelets in the outer
spool and place inner reel with spring inside the outer spool
(Fig. 35). Push the inner reel and outer spool together. While
holding the inner reel and outer spool, grasp the ends and
pull firmly to release the line from the holding slots in the reel.
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
14. Hold the inner reel in place and install the bump knob by
turning counterclockwise. Tighten securely.
INSTALLING A PREWOUND REEL
1. Hold the outer spool with one hand and unscrew the bump
knob clockwise (Fig. 28). Inspect the bolt inside the bump
knob to make sure it moves freely. Replace the bump knob
if damaged.
2. Remove the old inner reel from the outer spool (Fig. 28).
3. Remove the spring from the old inner reel (Fig. 28).
4. Place the spring in the new inner reel.
NOTE: The spring must be assembled on the inner reel
before reassembling the cutting attachment.
5. Insert the ends of the line through the eyelets in the outer
spool (Fig. 35).
6. Place the new inner reel inside the outer spool. Push the
inner reel and outer spool together. While holding the inner
reel and outer spool, grasp the ends and pull firmly to
release the line from the holding slots in the spool.
7. Hold the inner reel in place and install the bump knob by
turning counterclockwise. Tighten securely.
CHECKING THE OIL LEVEL
WARNING:
To prevent extensive engine wear
and damage to the unit, always maintain the
proper oil level in the crankcase. Never operate
the unit with a low oil level.
The importance of checking and maintaining the proper oil level in the
crankcase cannot be overemphasized. Check oil before each use:
1. Stop the engine and allow oil to drain into the crankcase.
2. Place the engine on a flat, level surface with the cutting
head shield hanging off a work bench or table to get a
proper oil level reading (Fig. 36).
3. Keep dirt, grass clippings and other debris out of the engine. Clean the area around the dipstick before
removing it.
4. Remove the oil fill plug.
5. Look into the oil fill hole, use a flashlight if needed. The oil should be just touching the inner most
thread (Fig. 37).
Fig. 29
Index Teeth
Fig. 30
Loop
Fig. 31
Fig. 32
Loop
Fig. 33
Tab
Fig. 34
Fig. 35
Fig. 36
MAINTENANCE AND REPAIR INSTRUCTIONS
6. If the oil level is not touching the inner most thread on the
oil fill hole, add a small amount of oil to the oil fill hole and
recheck (Fig. 37). Repeat this procedure until the oil level
reaches the inner most thread on the oil fill hole.
NOTE: Do not overfill the unit.
NOTE: Make sure the O-ring is in place on the oil fill plug
when checking and changing the oil (Fig. 38).
CHANGING THE OIL
CAUTION:
Wear gloves to prevent injury
when handling the unit.
For a new engine, change the oil after the first 10 hours of
operation. Change the oil while the engine is still warm. The oil will
flow freely and carry away more impurities.
1. Unplug spark plug boot to prevent accidental starting.
2. Remove the oil fill plug.
3. Pour the oil out of the oil fill hole and into a container by
tipping the unit to a vertical position (Fig. 39). Allow ample
time for complete drainage.
4. Wipe up any oil residue on the unit and clean up any oil that
may have spilled. Dispose of the oil according to Federal,
State and local regulations.
5. Refill the crankcase with 3.04 fluid ounce (90 ml) of SAE 30
SF, SG, SH oil (Fig. 40).
NOTE: Use the bottle and spout saved from initial use to measure
the correct amount of oil. The top of the label on the bottle
measures approximately 3.04 ounces (90 ml) (Fig. 41).
Check the level, See Checking the Oil Level. If the level is
low, add a small amount of oil and recheck. Do not overfill
(Fig. 37).
6. Replace the oil fill plug.
7. Reconnect the
spark plug boot.
Fig. 40
AIR FILTER MAINTENANCE
WARNING:
To avoid serious personal injury,
always turn the unit off and allow it to cool
before you clean or service it.
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation. It is an
important item to maintain. Failure to maintain your air filter
properly can result in poor performance or can cause permanent
damage to your engine.
1. Open the air filter cover. Push the tab on the under side of
the cover inward. Then pull the air filter cover out and up.
(Fig. 42).
2. Remove the air filter (Fig. 46).
3. Wash the filter in detergent and water (Fig. 43). Rinse the
filter thoroughly and allow it to dry.
4. Apply enough clean SAE 30 motor oil to lightly coat the
filter (Fig. 44).
5. Squeeze the filter to spread and remove excess oil (Fig. 45).
6. Replace the filter (Fig. 46).
NOTE: If the unit is operated without the air filter, you will
VOID the warranty.
7. Reinstall the air filter cover. Position the slots on the top of
the air filter cover onto the tabs at the top of the back plate
(Fig. 46).
8. Swing the cover down until the tab on the air filter
backplate snaps into place in the slot on the air filter cover
(Fig. 42).
Fig. 45
CARBURETOR ADJUSTMENT
The idle speed of the engine is adjustable. An idle adjustment screw is between the air filter cover and the
engine starter housing (Fig. 47).
NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should
make carburetor adjustments.
Check Fuel
Old fuel is usually the reason for improper unit performance. Drain and refill the tank with fresh fuel prior to
making any adjustments. Refer to Oil and Fuel Information.
Clean Air Filter
The condition of the air filter is important to the operation of the unit. A dirty air filter will restrict air flow.
Max Oil Fill Line
Fig. 37
Oil Fill Plug
O-Ring
Oil Fill Hole
Fig. 38
Fig. 39
Fill Line
Fig. 41
Air Filter Cover
Air Filter
Tab
Fig. 42
Fig. 43
Fig. 44
Back Plate
Tabs
Air Filter
Locking Tab
Fig. 46
7