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Operator's Manual
Riding Mower
Internal Bagging System
27.5" Cutting Deck
Model Series 320
IMPORTANT:
Read safety rules and instructions
carefully
before operating
equipment.
Warning:
This unit is equipped with an internal combustion engine and should not be used on or near any unimproved
forest-
covered, brush-covered
or grass-covered
land unless the engine's exhaust system is equipped with a spark arrester meeting
applicable local or state laws (if any). If a spark arrester is used, it should be maintained
in effective working order by the operator.
In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have
similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized
service dealer or contact the service department,
P.O. Box 361131 Cleveland, Ohio 44136-0019.
PRINTED IN U.S.A.
MTD LLC, P.O. BOX361131CLEVELAND, O HIO44136-0019
FORM NO. 770-10077D
(11/2001 )
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Summary of Contents for Yard-Man 320 Series
- Page 1 Operator's Manual Riding Mower Internal Bagging System 27.5" Cutting Deck Model Series 320 IMPORTANT: Read safety rules and instructions carefully before operating equipment. Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest- covered, brush-covered or grass-covered...
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Page 2: Table Of Contents
TABLEOFCONTENTS Content Page Important Safe Operation Practices ................Slope Gauge ....................... Assembling Your Riding Mower .................. Know Your Riding Mower .................... Operating Your Riding Mower ..................Making Adjustments ....................Servicing Your Riding Mower ..................Maintaining Your Riding Mower ................... Off-Season Storage ....................Troubleshootin{ ...................... -
Page 3: Important Safe Operation Practices
SECTION 1: IMPORTANT SAFEOPERATION P RACTICES WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate your riding mower. Failure to comply with these instructions may result in personal injury. - Page 4 onthemower d eckorcontact t heengine exhaust Never assume that children will remain where you presenting a potential firehazard. last saw them. • Keep children out of the mowing area and in SlopeOperation watchful care of an adult other than the operator. •...
- Page 5 • Never t amper w ithsafety devices. Check their Donotchange theengine governor settings o r proper o peration regularly. Useallguards as overspeed theengine. E xcessive e ngine speeds instructed i nthismanual. aredangerous. • Afterstriking a foreign object, s toptheengine, Observe proper d isposal lawsandregulations. remove thewirefromthespark plugandthoroughly Improper disposal offluidsandmaterials c anharm inspect t hemower f oranydamage.
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Page 6: Slope Gauge
SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE A POWER POLE A CORNER OF A BUILDING "_ _" "_ _" _ OR A FENCE POST €._ ,,,Z WARNING Do not mow on inclines with a slope in excess of 15 degrees (a rise of approximately 2-1/2 feet every 10 feet). -
Page 7: Assembling Your Riding Mower
SECTION 3: ASSEMBLING YOUR RIDING MOWER • Remove all screws and staples from the crate. • Remove both wing nuts securing the battery and • Holding sides of the crate firmly, lift top of the crate cover to the battery hold-down rods. See Figure 3. up and set it aside. - Page 8 • To attach the mulching plug now to the unit, follow WARNING: DO not operate the mower if any instructions on previous page to attach side- discharge chute to the deck. one or more of the grass catcher, discharge chute or mulching plug is not firmly installed on •...
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Page 9: Know Your Riding Mower
SECTION 4: KNOW YOUR RIDINGMOWER Compare the illustrations in Figure 8 with your riding mower to familiarize yourself with the location of various controls and adjustments. WARNING: The operation of any riding mower can result in foreign objects being thrown into the operator's eyes, causing severe eye damage. - Page 10 Blade Engagement Pedal • Before you move the shift lever to any of the positions, depress the brake pedal and stop the Use to engage or disengage the blade. unit. Keep your foot on the brake pedal. Blade Lock Use to lock blade at the engaged position. CuttingHeightAdjustmentLever Use to raise and lower the cutting deck which determines the cutting height.
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Page 11: Operating Your Riding Mower
SECTION 5: OPERATING Y OUR RIDING MOWER Using Throttle/Choke C ontrol • Turn the ignition key to the START position. As soon as the engine starts, let the key return to the The throttle/choke control is used to increase or ON position. - Page 12 grasscatcher bag by the handle and take it to the • When mowing an area for the first time, watch out proper disposal site. See Figure 11 . for objects lying on the grass. If you strike a foreign Hold the bag away from your body. Push down object, stop the engine.
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Page 13: Making Adjustments
SECTION 6: MAKING ADJUSTMENTS "Go" Pedal WARNING: DO not at any time make any Adjustment to the "Go" Pedal is made at the cable end. adjustment to the mower without first stopping See Figure 12. engine and disconnecting spark plug wire. •... - Page 14 SeatPosition • If the belt is slipping when you depress the blade engagement pedal about 3/4", loosen the two hex The seat position on the riding mower can be adjusted nuts on the cable. See Figure 13. to maximize the operator's convenience. •...
- Page 15 • Inspect rear of deck. If the deck is contacting the • Measure the distance from the tips of the blade to cable bracket on the front of the transmission, you the ground. will have to adjust the rear deck height. •...
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Page 16: Servicing Your Riding Mower
SECTION 7: SERVICING YOUR RIDING MOWER FuseReplacement Imaginary The fuse is located next to the spark plug under the rear Belt Line Belt Keeper "A" frame. Fuses seldom fail without a reason. If the fuse Keeper blows, the source problem must be corrected or the new fuse wilt blow again. -
Page 17: Maintaining Your Riding Mower
Using a 9/16" socket, remove bolt, spacer and the • Drop the pulley down and remove the belt. flat washer from the variable speed pulley. See • Replace new belt and reassemble. • Make sure that the belt is routed inside of belt Figure 17. - Page 18 Lubrication • The blade can be tested for balance by balancing it on a round shaft screwdriver. Remove metal from See Figure 20 for an illustration of the lube points the heavy side until it balances evenly. described below. Reassembly •...
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Page 19: Off-Season Storage
• Lubricate teeth of the external steering gears with • Using a brush or cloth, remove grass, chaff or automotive multi-purpose grease every 25 hours of debris from the finger guard on the engine daily to operation or once a season. prevent overheating of the engine. -
Page 20: Troubleshootin
SECTION 10: TROUBLE-SHOOTING Trouble Possible Cause Remedial Action Excessive vibration Bent or damaged blade Stop engine immediately. Check all pulleys, blade adapters, keys and bolts for tightness and spindle damage. Tighten or replace any damaged parts Bent blade. Stop engine immediately. Replace damaged blade. - Page 21 Dipstick not seated or broken Replace defective part. Engine loses crankcase vacuum Engine breather defective. Replace. For repairs beyond those listed in the Trouble-Shooting chart above, please contact an authorized service dealer or call Yard-Man Customer Service at 1- (800)-800-7310.
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Page 22: Parts List
SECTION 11: PARTS LISTFORSERIES 320 25 _ "_"... - Page 23 For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637...
- Page 24 Model320 Series...
- Page 25 Please add the applicable color code, wherever needed, to the part number to order a replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674...
- Page 26 Model320 Series Ref. No. Part No. Description Ref. No. Part No. Description 683-0152 Pivot Link Assembly 732-0829 Extension Spring 683-0194A Lift Arm Assembly 732-0837 Torsion Spring Hex Screw 5/16-18 X 1.00 Gr.5 736-0119 710-0376 Lock Washer 5/16 Hex Bolt 1/2-13 X 2.75 Gr.5 Spec. 736-0140 Flat Washer .385 LD.
- Page 27 736-0289 Shoulder Bushing replacement part. For instance, if a part numbered 700-xxxx is painted Yard-Man Green. the part number Lock Washer 5/16 736-0119 to order would be 700-xxxx-0665. Fiat Washer 736-3000...
- Page 28 Model320 Series Ref. No. Part No, Descript_o_ 683-0147A Idler Bracket Assembly Ref. No. Part No. 710-0191 Description Hex Screw (Special) Flat Washer 710-0314 Hex Screw 7/16-20 x 1.0" 736-0247 Beleville Washer 710-0902 Hex Screw 3/8-24 x 3.75" 736-0427 710-1611B TT Screw 737-0167 Grease 710-3096...
- Page 29 Model320 Series R_. No. Put No. Ref. No. Part No. Description Description 783-0605 Clamp: 9/16 dia. Deck Stabilizing Bracket 726-0272 Cable Tie 783-0564A Front Frame: Upper 725-0157 783-0811 Hairpin Clip Steering Gear Cover 714-0470 683-0264A Hairpin Clip Front Channel Assembly 714-0147 783-0554 Cam Bracket...
- Page 30 Model320 Series...
- Page 31 Model320 Series Ref. No. Part No. Description Ref. No. Part No. Description 683-0149B Oil Drain Sleeve Frame Assembly 731-1682A 683-0190A Frame Rail Support: RH 731-1945A Engine Duct 683-0191A Frame Rail Suppod: LH 732-3080A Compression Spring 683-0192 Rubber Washer Muffler Pipe Extension 735-0273 710-0148 Hex Fl.
- Page 32 For instance if a part numbered 700- xxxx _s paintec Yard-Man Green the part number to order would be 700-xxxx-0665. Yard-Man Green: 0665 Yard-Man Yellow: 0674 Powder Black: 0637 /.4-' Ref.
- Page 33 Model320 Series Ref. No. Part No. Description 618-0232 Differential Assembly: Single Speed 618-0248 Drive Shaft assembly: LH Brake 618-0072B Upper Housing Assembly Detent Shaft Assembly ,611-0114 661-0006 Brake Yoke Assembly: LH 710-1206 Hex Washer Hd. TT Screw 1/4-20 x2.37 Gr,5 710-1325 Hex Washer Hd.
- Page 34 Green. the par_ number to order would be 700- 783-0569B xxxx-0665, 783-0594 Deck Cable Plate Yard-Man Green: 0665 1" n three-in-one single blade models only Yard-Man Yellow: 0674 $ Not applicable to three-in-one single blade models Powder Black: 0637 m three-in-one...
- Page 35 Model320 Series Ref. No Part No. Description 631-0060 Flow indicator Assembly 631-0080 Grass Bag Assembly Machine Screw 1/4-20 x 1.0 710-0166 710-0286 Machine Screw 1/4-20 x 0.5" Hex Screw #10-16 x 0.5" 710-0456 710-0564 Hex Screw 1/4-20 x 2.75" 1 710-0642 Self-Tapping Screw 1/4-20 x 0.75"...
- Page 36 Model320 Series 'ql_\\\ Ref. No. Part No. Description 629-0945 Harness Assembly w/o relays 725-0267 Ignition Switch: 5 Pin 725-1426 Solenoid: 12 V. 100 amp. 725-1462 Seat Switch 725-1643 Spring Switch Interlock Switch 725-1657A 725-1381 Fuse: 20 amp. 725-1726 Battery Cover 725-3237 Battery Cover:...
- Page 37 "eplacement part. For instance if a part numbered 700- _J=L_=_ xxxx is painted Yard-Man Green, the part number to order would be 700-xxxx-0665 6 _-J Yard-Man Green: 0665...
- Page 38 Safety& Decorative Labels 777120125 777120378 777120489 777[ 777D02423 777S30199 FACING OPERATOR 777S30145 777D02307 RIGHT SIDE 777D02308 777120379 777D04285 777CX00001 _IODEL PLATE ON RIGHT SiDE 777120808 777S30503 777S30200...
- Page 39 YourNotes Date Comments...
- Page 40 MANUFACTURER'S LIMITED WARRANTY FOR: YaRD-MaN)// The limited warranty set forth below is given by MTD LLC with MTD LLC does not extend any warranty for products sold or exported outside of the United States, its respect to new merchandise purchased and used in the United States, its possessions and territories.