Scag SSZ User Manual
MODEL SSZ
OPERATOR’S MANUAL
THIS MANUAL CONTAINS THE OPERATING
INSTRUCTIONS AND SAFETY INFORMATION
FOR YOUR SCAG MOWER. READING THIS
MANUAL CAN PROVIDE YOU WITH ASSISTANCE IN MAINTENANCE AND ADJUSTMENT PROCEDURES TO KEEP YOUR MOWER
PERFORMING TO MAXIMUM EFFICIENCY.
THE SPECIFIC MODELS THAT THIS BOOK
COVERS ARE CONTAINED ON THE INSIDE
COVER. BEFORE OPERATING YOUR MACHINE, PLEASE READ ALL THE INFORMATION ENCLOSED.
PART NUMBER 03032
WARNING:
FAILURE TO FOLLOW SAFE OPERATING PRACTICES
MAY RESULT IN SERIOUS INJURY.
* Keep all shields in place, especially the grass discharge chute.
* Before performing any maintenance or service, stop the machine and
remove the spark plug wire and ignition key.
* If a mechanism becomes clogged, stop the engine before cleaning.
* Keep hands, feet and clothing away from power-driven parts.
* Read this manual completely as well as other manuals that came
with your mower.
REMEMBER - YOUR MOWER IS ONLY AS SAFE AS THE OPERATOR!
Hazard control and accident prevention are dependent upon the awareness,
concern, prudence, and proper training of the personnel involved in the
operation, transport, maintenance, and storage of the equipment.
This manual covers the operating instructions
and illustrated parts list for:
SSZ-18, 20, and 22CV
with a serial number of XXX70001 - XXX79999
Always use the entire serial number listed on the serial number
tag when referring to this product.
Your mower was built to the highest standards in the industry. However, your mower is only as
safe as you, the operator, make it. Carelessness or error on the part of the operator may result in
serious bodily injury. Hazard control and accident prevention depend upon the awareness, concern, prudence, and proper training of the personnel involved in the operation, transport, and
storage of this equipment. Make sure every operator is properly trained and thoroughly familiar
with all of the controls and safety instructions before operating the equipment.
SAFETY INSTRUCTIONS
WARNING:
Do not operate mower on steep slopes. Riding lawn
mowers can tip over when used on an excessive
slope. To check a slope, attempt to back up with
cutter deck down. If wheels slip when backing up
slope, stay off the slope. If you are in doubt about
hillside operation, stay off the slope.
Always back up when loading a machine on ramps
or tilt bed trailers.
1. Know the controls and how to stop quickly. READ
THIS OPERATORS MANUAL and instructions
furnished with attachments. A replacement
Operator's Manual is available from your Scag
Servicing Dealer. To order, contact your dealer with
the complete model number and serial number of your
Scag product.
7. Disengage the power to attachments, stop the
engine, and remove the key before making any
repairs or adjustments.
8. Disengage the power to attachments when
transporting the machine or when attachments are
not being used.
9. Take all possible precautions when leaving the
machine unattended including disengaging the
power to attachments, lowering the attachments,
setting the parking brake, and removing the key.
10. Do not stop or start suddenly when going up or
down a hill. Mow up and down the face of slopes;
never mow across slopes.
11. Reduce speed and be very careful when operating on
slopes or making sharp turns to prevent tipping or
loss of control. Be especially cautious when
changing direction on slopes. If necessary to turn
on a hill, always turn downhill.
2. Do not allow children to operate this machine. Do
not allow adults to operate this machine without
proper instruction.
3. Do not carry passengers. Never mow toward or near
anyone.
4. Clear the area of objects such as wires, sticks, and
rocks that can be picked up and thrown by the
mower blades.
5. Disengage all attachment clutches and engage parking
brake before attempting to start the engine.
6. Disengage all attachment clutches and engage the
parking brake before leaving the operators position.
12. Watch for holes, rocks, roots in the terrain, and
other hidden hazards. Keep away from dropoffs.
13. Watch for traffic when crossing roadways or
operating near roadways.
14. When using any attachments, never directly
discharge materials towards bystanders or allow
anyone near mower while it is operating.
15. Handle gasoline with care - it is highly flammable.
a. Use an approved gasoline container only.
b. Never remove the fuel cap while the engine is
running or hot. Allow the engine to cool for
several minutes before removing the cap and
adding gasoline. Never fill the fuel tank
indoors. Always clean up spilled gasoline.
c. Do not run the engine indoors.
1
SAFETY INSTRUCTIONS - CONT’D
16. Keep the machine and attachments in good
operating condition. Make sure all safety devices
and shields are in place and operate the equipment
as intended.
17. Keep all nuts, bolts, and screws tight to be sure
equipment is in safe operating condition.
18. Never store the equipment with gasoline in the tank
in a building where fumes may reach an open flame
or spark. Allow the engine to cool before storing
the machine in any enclosure.
19. To reduce fire hazard, keep the engine free of grass,
leaves, or excess lubricants.
20. If the machine or attachments strike a foreign
object, disengage the power to the attachments and
stop the engine immediately. Wait for all moving
parts to stop, then inspect for damage. Repair the
damage before restarting or operating the
equipment.
25. Perform only the maintenance described in this
manual. If additional maintenance or major repairs
are needed, contact an authorized Scag Servicing
Dealer. To ensure optimum performance and safety,
always purchase genuine Scag replacement parts
and accessories. Never use WILL FIT replacement parts and accessories made by another manufacturer. Using such parts may void the warranty.
WARNING:
Do not operate the machine while wearing sandals,
tennis shoes, sneakers, or shorts. Also, do not wear
loose fitting clothing which could get caught in moving parts. Always wear long pants and substantial
shoes.
Wearing safety glasses and safety shoes is
.
advisable.
21. Do not change the engine governor settings or
overspeed the engine.
22. When using the machine with a mower:
a. Mow only in daylight or good artificial light.
b. Never dismount the machine to adjust the
cutting height while the engine is running.
c. Shut the engine off and remove the key before
removing the grass catcher or unclogging the
chute.
d. Check the blade mounting bolts frequently for
proper tightness.
23. Disengage the power to the blades before backing
up. Do not mow in reverse unless absolutely
necessary and then only after careful observation of
the entire area behind the mower.
24. The discharge chute must be installed and be in the
down position on a side discharge mower except
when the optional grass catcher or the mulching
plate is completely installed. If the discharge chute
clogs, shut the engine off, remove the key, and wait
for all movement to stop before removing any
obstruction.
CAUTION:
Stop engine and remove key from ignition before
making any adjustments. Wait for all moving parts
to come to a complete stop before beginning work.
Engine and drive unit can get hot during operation.
Allow engine and drive components to cool before
making any adjustments.
WARNING:
To prevent personal injury or equipment damage,
do not operate the machine without the cutter deck
properly mounted.
2
HYDRAULIC SAFETY
1. Hydraulic fluid is under high pressure. If you need
service on your hydraulic system, please see your
dealer.
WARNING:
Keep body and hands away from pin holes or nozzles
that eject fluid under high pressure. Use paper or
cardboard, not hands, to search for leaks.
Hydraulic fluid escaping under high pressure may
have sufficient force to penetrate your skin and cause
serious injury. If fluid is injected into your skin, a
physician familiar with this form of injury must remove it surgically within a few hours or gangrene
may result.
FREE
WHEEL
POSITION
RUN
POSITION
Figure 1
DUMP VALVE
LEVER
SC200G
2. Make sure all hydraulic fluid connections are tight
and all hoses and lines are in good condition before
applying pressure to the system.
ADJUSTMENTS
Neutral Adjustment
1. Set the machine up on jack stands so the drive
wheels are free to rotate. Block the caster wheels to
prevent an accident if the machine should accidentally fall off the jack stands.
2. Run Position: Move the dump valve lever (on Left
Hand side of mower) behind the hook on the frame
to close hydraulic dump valves on the pump. (See
Figure 1)
Free Wheel Position: Pull lever back and to the
left, then push forward to relieve pressure. (See
Figure 1)
3. Start the engine and check if one or both of the
drive wheels are turning.
4. Adjust each drive wheel separately by using the
turnbuckles located under the seat. Loosen the jam
nut on the turnbuckle. (See Figure 2)
5. If the drive wheel is rotating forward, adjust the
turnbuckle clockwise. If the drive wheel is rotating
rearward, adjust the turnbuckle counterclockwise.
Adjust until the drive wheel stops turning. (See
Figure 2)
JAM NUT
Adjust TURNBUCKLE
clockwise or
counterclockwise until drive
wheels stop rotating
SC201G
Figure 2
3
ADJUSTMENTS - CONT’D
ESC202G
CASTER WHEELS
25 PSI
DRIVE WHEELS
12 PSI
Neutral Adjustment Cont'd
6. Tighten the jam nut to secure the neutral position.
7. Adjust the other drive wheel if necessary.
8. Actuate the hand control levers forward and reverse.
Allow the levers to self-center and check that the
drive wheels remain in neutral.
NOTE: The neutral return mechanisms on the
fenders are adjusted at the factory. Readjustment
should not be necessary.
Figure 3
Straight Line Running Adjustment
CAUTION:
Stop engine and remove key from ignition
before making any adjustments. Wait for
all moving parts to come to a complete stop
before beginning work.
Engine and drive unit can get hot during
operation. Allow engine and drive components to cool before making any adjustments.
1. Before making this adjustment, check the tire
pressure of the drive wheels. Tire pressure for each
wheel must be equal. (See Figure 3) If the tire
pressures are not equal, the machine will pull to the
side with the lower tire pressure.
NOTE: Make this adjustment only on the LH
pump. The RH pump has a fixed speed and
cannot be adjusted.
2. Locate the turnbuckle for LH pump under the
operator seat in front of the hydraulic oil tank. (See
Figure 4)
3. Loosen nut securing turnbuckle to bellcrank. (See
Figure 4)
FASTER
NUT
SLOWER
BELLCRANK
TURNBUCKLE
SC203G
Figure 4
4
ADJUSTMENTS - CONT’D
Straight Line Running Adj. - Cont'd
4. Adjust position of turnbuckle by moving it in
mounting slot either forward to slow left wheel or
backward to speed up left wheel. If unit pulls to the
right, left wheel is too fast. If unit pulls to the left,
left wheel is too slow.
5. Tighten nut to secure turnbuckle.
6. Readjust neutral if necessary. (See Figure 2)
3. To adjust RH blade drive belt: Adjust RH belt
tension so belt moves 1/2" with 10 pounds pressure.
Adjust tension by tightening or loosening J-bolt.
(See Figure 6 for SMZ-52; See Figure 7 for
SMZ-61 & SMZ-48)
4. Carefully unlatch foot plate support rod and lower
foot plate.
NUT
Drive Belt Replacement
"J" BOLT
Cutter Deck Drive Belts
CAUTION:
Stop engine and remove key from ignition before making any adjustments. Wait for all moving parts to come to a complete stop before
beginning work.
1. Lift foot plate and secure with foot plate support
rod.
2. To adjust cutter deck drive belt: Adjust until end of
spring aligns with end of L-shaped bracket. (See
Figure 5)
BELT
NUT
"J" BOLT
WASHER
BELT
SC205G
Figure 6 - SMZ-52
BELT
WASHER
NUT
END OF L- SHAPED
WASHER
NOTE: Due to initial belt stretching, check this
adjustment after the first 2 hour, 4 hour, and 8 hour
intervals.
BRACKET
Figure 5
SC204G
"J" BOLT
Figure 7 - SMZ-61 & SMZ-48
5
SC206G
ADJUSTMENTS - CONT’D
Drive Belt Replacement
3. Make sure the engine oil level (10W30) is at FULL
on the dipstick. When performing oil changes, fill
the engine to the full mark on the engine dipstick.
(Approximately 2 quarts will be needed for Kohler
engines) DO NOT OVERFILL.
CAUTION:
When replacing the drive system belt use extreme caution. The idler arm is under spring
tension.
Remove the two 1/4" nuts on the belt guard and remove
the guard. To remove the old belt, use a 1/2" drive
breaker bar and insert it into the square hole on the idler
arm. Pull the idler arm down until the belt becomes slack
and can be removed easily from the idler pulley. Slowly
move the idler arm up until the stop bolt rests against the
hydraulic tank support. Remove the old belt and mount
the new belt around the engine drive pulley and the two
pump pulleys. Feed the belt up toward the idler pulley.
Pull the idler arm down so that the new belt can easily be
mounted on the idler pulley. Slowly move the idler arm
up until the belt is firmly engaged. Remove the breaker
bar and remount the belt guard. Check to ensure that the
belt is riding properly in all pulleys.
ontrol Handle Position
Hand Control Handle Position
The position of the hand control handles can be adjusted
for operator comfort. Loosen the bolts holding the
handle to the lever bar just enough to allow movement of
the handle. Adjust to position most comfortable for
operator. Retighten bolts.
4. Check the oil level (SAE 20W50) in the hydraulic
reservoir. The reservoir is under the seat. The oil
level should be 2" below the top of the tank. When
performing oil changes, fill the reservoir until 2"
below top of tank. (Approximately 4 quarts will be
needed) DO NOT OVERFILL.
5. Check that all fasteners are tightened properly.
Make sure all safety devices are in place and
working correctly.
WARNING:
Gasoline is highly flammable. Be careful when
filling tank. Do not fill tank while engine is running or hot from operation. Extinguish open
flames, matches, and smoking materials before filling tank. Do not overfill tank. Wipe up
all gasoline spills.
6. Fill the fuel tank with clean, fresh, lead-free
gasoline with a minimum octane rating of 87.
7. Check the safety interlock system. With the
operator on the seat, the engine must not start unless
the control handles are in the neutral lock position
and the cutter drive is disengaged.
!
INITIAL RUN, INSPECTION, AND
OPERA TING INSTRUCTIONS
1. Check that all belts are routed correctly.
2. Check cutter blade drive belts for correct tension.
IMPORTANT: If the engine is running, the
engine must stop if the operator leaves the seat
when one or both handles are in the drive
position or the cutter drive is engaged.
6
INITIAL RUN, INSPECTION, AND
OPERA TING INSTRUCTIONS CONT’D
8. To start the engine:
10. Release the parking brake. Check that the machine
does not creep forward or backward. If the machine
does creep, adjust the neutral control. See Neutral
Adjustment instructions.
a. The operator must be sitting in the seat.
b. Place control handles in neutral lock position.
c. Pull mower engagement switch to off position.
d. Put parking brake in engaged position.
e. Adjust throttle and choke as required.
f. Turn ignition key to start. Release ignition key
when engine starts. Key will return to RUN
position.
9. Pull the mower engagement switch out and push it
forward to engage the cutter drive belts. (See
Figure 8) Allow the belts to run for five minutes.
NOTE: For best belt life, engage the clutch at
half throttle and not under load.
NOTE: When the PTO is engaged (or possibly
disengaged), a squealing sound from the under
side of the machine is normal. It is caused by the
electric clutch plates meshing as the mower
comes up to speed.
CAUTION:
CAUTION: Stop engine and remove key from
ignition before making any adjustments. Wait
for all moving parts to come to a complete stop
before beginning work.
Engine and drive unit can get hot during operation. Allow engine and drive components
to cool before making any adjustments.
11. Operate the machine forward and backward.
Check that all the systems function correctly. If the
machine does not move, make sure the hydraulic
dump valve lever near the left wheel is engaged.
(See Figure 1 page3)
To engage the parking brake, move the lever up and
out into the bracket. To disengage the parking
brake, pull the lever up and in, away from the
bracket. (See Figure 9)
PULL UP
THEN FORWARD
TO ENGAGE
Figure 8
PULL UP AND PUSH
FORWARD TO ENGAGE
MOWER DECK ON
MOWER DECK OFF
PULL BACK
TO DISENGAGE
SC208G1
PARKING BRAKE
OFF
ON
SC209G1
Figure 9
7
INITIAL RUN, INSPECTION, AND
OPERA TING INSTRUCTIONS CONT’D
12. Shut off the engine, remove the key from the
ignition, and wait for all moving parts to stop.
Recheck the cutter deck drive belts for proper
tension. Correct and adjust as necessary.
Sharpen blades as shown on Figures 10 and 11.
Y
X
13. Park the machine on a level area, set the parking
brake, and remove the key from the ignition to
prevent engine starting.
14. Before transporting the machine, latch the seat stop
cable to avoid damage to the seat.
MAINTENANCE
g
Free Wheeling
To release the drive wheels, so the machine will roll
without the engine running, pull the dump valve lever
back from the hook on the frame, move it to the left, and
push it forward to relieve the pump pressure. The lever
is on the LH side of the machine. (See Figure 1 on page
3)
Cutter Blades
DO NOT CUT IN,
LEAVE ORIGINAL
STARTING POINT
Figure 10
Do not sharpen (X) beyond 1/3 of blade width (Y).
ANGLE BLADE
BACK
THE EDGE OF BLADE SHOULD
BE AT A 30 DEG. ANGLE
30
Figure 11
SC210G
SC211G
WARNING:
Blade is sharp! Blade at rest can cause severe cuts. Rotating blade can cut fingers off.
Always lift deck using handles provided.
Suggestion: Dress blade with a file. Wheel grinder may
burn the blade.
Curb Climbing
8
MAINTENANCE - CONT'D
g
Curb Climbing
When driving a riding mower up and over a curb, first
raise the cutter deck to the highest position. Then, drive
in reverse and at an angle so that the back drive wheels
go over the curb one at a time. When both drive wheels
are over the curb, turn the machine so that both front
caster wheels contact the curb at the same time.
(See Figure 12)
Figure 12
SC212G
9
LUBRICATION & MAINTENANCE
Break-In
8 hours (Daily)
40 hours (Weekly)
100 hours (Biweekly)
200 hours (Monthly)
Procedure Comments
X Check all hardware for proper tightness
X Change engine oil and filter at 5 hours See engine manufacturer information
X Check belt tension 2 hour, 4 hour, and 8 hour intervals.
X Check engine oil level Do not overfill
X Remove debris from oil cooler See engine manufacturer information
X Clean hydraulic pump cooling fins MORE OFTEN IF NEEDED
X Remove debris from under belt cover MORE OFTEN IF NEEDED
X Sharpen cutter blades MORE OFTEN IF NEEDED
- Grease spindle bearings (2 pumps of hand gun) + US Lithium MP White Grease 2125
X Clean air filter MORE OFTEN IF NEEDED
X Check tire pressure Add air if necessary
X Check battery acid level Use distilled water only
X Check belt tension Adjust as needed.
X Replace air filter MORE OFTEN IF NEEDED
X Change engine oil See engine manufacturer information
X Grease caster wheel bearings Chassis grease - Qty 2
X Grease caster wheel pivots Chassis grease - Qty 2
X Grease idler arm pivots Chassis grease - Qty 3
X Grease push arms Chassis grease - Qty 2
X Grease control levers Chassis grease - Qty 2
X Grease bell crank Chassis grease - Qty 4
X Grease height adjustment Chassis grease - Qty 1
X Check all hardware for proper tightness
X Change engine oil filter See engine manufacturer information
X Check hydraulic fluid reservoir level Add oil if needed (SAE 20W50)
X Clean and adjust spark plugs See engine manufacturer information
Every 500 hours (Bimonthly)
Drain hydraulic system and replace fluid Use SAE 20W50 motor oil
Change hydrostatic oil filter * Clean area before removing filter
Adjust air gap on electric clutch Contact your Scag dealer for information
about making this adjustment
* IMPORTANT: Use only Scag Authorized part for proper filtration.
+ Compatible Greases:
Lidok EP #2 (found at industrial shops)
Ronex MP (Exxon service stations)
Shell Alvania (Shell service stations)
Mobilux #2 (Mobil service stations)
Super Lube-M EP #2 and Super Lube-M #2 (Conoco service stations)
10
TROUBLESHOOTING CUTTING CONDITIONS
CONDITION
CAUSE
CURE
Stringers - Occasional Low engine RPM Run engine at full 3600 RPM
Blades of Uncut
Grass Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Dull blades, incorrect sharpening Sharpen blades
Deck plugged, grass accumulation Clean underside of deck
Width of Deck
SGB020
Belts slipping Adjust belt tensions
Streaking - Strips of Dull, worn blades Sharpen blades
Uncut Grass in Cutting
Path Incorrect blade sharpening Sharpen blades
Low engine RPM Run engine at full 3600 RPM
Belt slipping Adjust belt tension
Deck plugged, grass accumulation Clean underside of deck
Ground speed too fast Slow speed to adjust for conditions
Wet grass Cut grass after it has dried out
Width of Deck
SGB018
Bent blades Replace blades
Streaking - Strips of Not enough overlapping Increase the overlap of each
Uncut Grass Between between rows pass
Cutting Paths
Width
of
Deck
SGB019
Width
of
Deck
11
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