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28

Section 7

7.3 HYDRAULIC SYSTEM

A. Checking Hydraulic Oil Level

The hydraulic oil level should be checked after the first
10 hours of operation. Thereafter, check the oil after
every 200 hours of machine operation or monthly,
whichever occurs first.

-IMPORTANT-

If the oil level is consistently low, check for
leaks and correct immediately.

1. Wipe dirt and contaminants from around the

reservoir cap.  Remove the cap from the hydraulic oil
reservoir.

2. Visually check the level of hydraulic oil.  Hydraulic

oil must be at least 3-1/4" inches from top of the
filler neck.  If the level cannot be determined visually,
use a clean tape measure to check the level.   If the
fluid is low, add 20W50 motor oil.  DO NOT
overfill; (overfilling the oil reservoir may cause oil
seepage around the cap area).

3. Clean the fill cap and install it onto the reservoir.

B. Changing Hydraulic Oil

The hydraulic oil should be changed after every 500
hours or annually, whichever occurs first.  The oil should
also be changed if the color of the fluid has become black
or milky.  A black color and/or a rancid odor usually
indicates possible overheating of the oil, and a milky
color usually indicates water in the hydraulic oil.

-NOTE-

The hydraulic oil should be changed if you
notice the presence of water or a rancid
odor to the hydraulic oil.

1. Park the mower on a level surface and stop the

engine.

2. Place a suitable container under the hydraulic oil

reservoir.  Remove the fill cap from the reservoir.
Remove the drain plug from the bottom of the
reservoir. (See Figure 7-2).  Allow the fluid to drain
into the container and properly discard it.

3. Re-install the drain plug into the reservoir and be

sure it is tight.

-NOTE-

Before refilling the hydraulic oil reservoir
the hydraulic oil filter should be changed as
outlined in section C on the next page.

4. Fill the reservoir to 3-1/4" inches from the top of the

filler neck with 20W50 motor oil.

5. Replace the reservoir fill cap.  Start the engine and

drive forward and backward for two minutes.  Check
the oil level in the reservoir.  If necessary, add oil to
the reservoir.

Figure 7-2 Hydraulic Oil Reservoir

Hydraulic Oil
Reservoir

STT99HOR-1

Содержание STT-31BSG

Страница 1: ...NTAINS THE OPERATING INSTRUCTIONS AND SAFETY INFORMA TION FOR YOUR SCAG MOWER READING THIS MANUAL CAN PROVIDE YOU WITH ASSISTANCE IN MAINTENANCE AND AD JUSTMENT PROCEDURES TO KEEP YOUR MOWER PERFORMIN...

Страница 2: ...nd Instructional Decals 7 Section 3 Specifications 8 9 Section 4 Operating Instructions 4 1 Controls and Instrument Identification 10 4 2 Safety Interlock System 11 4 3 Initial Run In Procedures 12 4...

Страница 3: ...gine Fuel System 30 7 6 Engine Air Cleaner 30 7 7 Battery 30 7 8 Drive Belts 32 7 9 Cutter Blades 32 7 10 Tires 33 7 11 Cutter Deck Gearbox 34 7 12 Cooling System 34 7 13 Body Deck Hopper and Upholste...

Страница 4: ...s the right to make changes at any time without notice and without incurring any obligation 1 2 DIRECTION REFERENCE The Right and Left Front and Rear of the machine are referenced from the operator s...

Страница 5: ...causes of possible injury or death Signal Word It is a distinctive word found on the safety decals on the machine and throughout this manual that alerts the viewer to the existence and relative degre...

Страница 6: ...ims to improve operator s view ParkingBrake Lever operated interlocked parking brake prevents operation with parking brake engaged Frame Compact tractor frame with structural steel tubing construction...

Страница 7: ...heels 13 x 5 x 6 caster wheels with tapered roller bearing pivots Spindles Heavy duty 1 1 8 top dimension spindle shaft cast housing taper roller bearing low maintenance with top access grease fitting...

Страница 8: ...will engage the deck drive Pushing down on the switch will disengage the deck drive 3 Engine Choke Control Figure 4 1 Used to start a cold engine 4 Engine Throttle Control Figure 4 1 Used to control...

Страница 9: ...wheel the mower Rotating the levers clockwise until they stop allows the unit to move under hydraulic power The levers must be in this position during operation of the mower Rotating the levers counte...

Страница 10: ...for more than 15 seconds at a time Allow at least 60 seconds between each cranking attempt to prevent overheating of the starter motor Prolonged cranking can damage the starter motor and shorten batt...

Страница 11: ...traveling in reverse allow the right steering control lever to move forward The further the control is allowed to move forward the quicker the mower will turn right To stop the reverse travel allow th...

Страница 12: ...3 Keep tires properly inflated 4 8 PARKING THE MOWER 1 Place the steering control levers in the neutral position 2 Disengage the cutter blades 3 Slow the engine to idle speed 4 Engage the parking brak...

Страница 13: ...2 The discharge chute must not be removed and must be kept in the lowest position to deflect grass clippings and thrown objects downward Direct the side discharge away from sidewalks or streets to min...

Страница 14: ...s Cutter Deck Level The cutter deck should be level from side to side for proper cutting performance To check for level be sure that the mower is on a flat level surface the tires are properly inflate...

Страница 15: ...he top of the cutter deck See Figure 6 7 Tighten the jam nuts on the control rod Figure 6 7 Cutter Deck Stop 3 Check the cutter deck cutting height by placing the lanyard pin in the 3 position on the...

Страница 16: ...ution when checking the hydraulic hoses See paragraph 2 5 X Check coolant level See paragraph 7 12 X Check engine oil level See paragraph 7 4 X Clean mower See paragraph 7 14 X Check condition of blad...

Страница 17: ...replace hydraulic oil Use SAE 20W50 Motor Oil X Replace hydraulic oil filter See paragraph 7 3 X Replace cutter deck gearbox lubricant See paragraph 7 1 X Change coolant See paragraph 7 12 7 2 LUBRIC...

Страница 18: ...Fitting Points 390S0145 1 GREASE FITTING LUBRICATION Lubricant Interval Lithium MP White Grease 2125 40 Hours Weekly Chassis Grease 100 Hours Bi monthly Chassis Grease 200 Hours Monthly Chassis Grease...

Страница 19: ...so be changed if the color of the fluid has become black or milky A black color and or a rancid odor usually indicates possible overheating of the oil and a milky color usually indicates water in the...

Страница 20: ...LS STT99CDC 1 21 19 37 42 4 6 14 10 42 5 2 3 35 23 41 25 38 32 34 41 30 27 33 40 41 28 28 24 26 41 40 CUTTER DECK 13 40 39 31 41 40 39 43 9 8 45 20 18 36 16 44 17 41 40 26 11 29 22 40 41 15 22 41 7 1...

Страница 21: ...nt 24 04020 09 Nut Hex 5 8 11 25 04012 09 Set Screw 5 16 18 x 1 2 Sq Head 26 04040 09 Flatwasher 5 8 656 x 1 312 x 095 27 04041 14 Flatwasher 1 1 062 x 1 50 x 048 28 48114 04 Grease Fitting 29 04061 0...

Страница 22: ...OMPONENTS 2001 STTBSG SMC 1 46 48 47 48 15 50 26 30 25 12 15 19 9 6 1 23 24 A 31 32 33 34 29 33 36 37 40 39 38 41 42 43 55 35 45 15 51 53 27 22 54 49 49 20 52 28 15 14 13 12 11 10 16 17 A 20 56 5 3 4...

Страница 23: ...W Race 34 482028 01 Plug 1 4 28 THD Form Ref Part No No Description Common hardware which should be purchased locally All bolts Grade 5 plated all other fasteners zinc plated 35 45936 Extention Weldme...

Страница 24: ...9 4 10 16 17 18 19 20 21 22 22 23 24 24 25 25 26 27 27 28 29 30 31 32 33 34 37 38 42 40 41 39 43 43 35 44 44 45 46 47 43 50 51 52 53 43 55 54 43 55 45 57 43 58 35 59 60 61 59 63 64 68 42 40 42 40 35...

Страница 25: ...x 938 x 105 37 04063 20 Key 1 4 x 1 4 x 1 00 Ref Part No No Description DECK DRIVE COMPONENTS 38 461079 Idler Arm 39 04001 46 Bolt Hex Head 3 8 16 x 2 25 40 04019 04 Nut Serr Flg 3 8 16 41 48181 Pull...

Страница 26: ...S ENGINE BRACKETS TO A A ATTACHES TO FRAME 17 22 21 12 13 15 2 9 1 5 11 10 10 6 7 20 19 14 14 3 18 16 16 8 23 24 25 26 27 28 29 30 31 32 35 26 26 36 37 26 26 37 40 36 26 41 42 43 42 44 45 33 4 2k STTB...

Страница 27: ...nd Not Available Through Scag Contact Briggs Stratton 25 04003 12 Bolt Carr 5 16 18 x 75 26 04019 03 Nut Serr Flng 5 16 18 27 04069 02 Pin Rue Cotter 1 2 dia 28 04090 04 Rivet Pop 1 8 x 294 29 481817...

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