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Sears 917.25591 - page 1
8EA/RS OWNERS MANUAL Caution: Read Rules for Safe Operation and Instruction s Carefully GT 18 TWIN TRACTOR Assembly Installation Operation Repair Parts Sears, Roebuck and Con, Chicago, IL 60684 U.S_A. ...
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Sears 917.25591 - page 2
CONGRATULATIONS on your purchase of a Sears GT 18 Garden Tractor° It has been designed, engineered and manu- factured to give you dependability and performance. Should you experience any problem you cannot easily remedy, please contact your nearest Sears Service Center. They have competent, well-trained technicians and the proper tools and parts t ...
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Sears 917.25591 - page 3
TABLE OF CONTENTS RULES FOR SAFE OPERATION ........ BELOW MAINTENANCE INSTRUCTIONS ............. 13 ASSEMBLY INSTRUCTIONS ................. 4 TROUBLE SHOOTING ..................... 25 OPERATION INSTRUCTIONS ................ 7 REPAIR PARTS ........................... 27 RULES FOR SAFE 1_ Know the controls and how to stop quickly. READ THE OWNERIS MA ...
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Sears 917.25591 - page 4
CUT AWAY VIEW FIGURE 1 BATTERY COMPARTMENT FIGURE 2 FIGURE 3 VENT CAP TUBE BATTERY CELL GRILL klUT HER HEX BOLTS BLACK (NEGATIVEI CABLE ASSEMBLY To assemble and adjust your Tractor you will need: two 7/16" wrenches, one 3/4" wrench and one 9/16" wrench NOTE: RIGHT HAND (R.H_) AND LEFT HAND (LH.) ARE DETERMINED FROM OPERATOR'S PO ...
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Sears 917.25591 - page 5
5o Install Battery using: two Int./Exto Lockwashers, two Wing INTJEXT. WING WING NUT Nuts {shown full size below) and LOCKWASHER NUT two Battery Bolts and one Terminal Guard found in Bag of Parts. a, Using the square hole on one side of the Battew Support (Fig, 4") insert one Battery Bolt, head of Bolt down° Fasten the Battery Bolt to the Ter ...
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Sears 917.25591 - page 6
FIGURE7 "CLUTCH/BRAKE" POSITION DIPSTICK ENGINE PARKING BRAKE "ENGAGED" POSITION ct "CLUTCH" POSITION BRAKE SHAFT FIGURE 8 8NUTIIAL SERVICE 1. This engine hag been shipped filled with oil. Check Engine Oil Level with Tractor on level ground., Wipe Dipstick (Fig, 7) clean, push it in tight for a few seconds, remove and ...
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Sears 917.25591 - page 7
4. Pull Choke out (Fig. 9). 5 Move Throttle Control to middle position (Fig° 9)o 6. Turn Ignition Key to "START" position until Engine starts (Fig, 9). NOTE: DO NOT RUN STARTER CONTINU- OUSLY FOR MORE THAN FIFTEEN SECONDS PER MINUTE° If engine does not start after several attempts, move Throttle Control to "F" (fast) position, ...
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Sears 917.25591 - page 8
NEGATIVE (BLACK CABLE) TERMINAL STARTING YOUR TRACTOR WITN A LOW BATTERY if your Battery is too low to start the engine, it should be recharged. If Jumper Cables" are used for emergency star"_ing follow this procedure: NOTE: YOUR TRACTOR IS EQUIP- PED WITH A 12 VOLT NEGATIVE GROUNDED SYSTEM, THE OTHER VEHICLE MUST ALSO BE A 12 VOLT NEGA, ...
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Sears 917.25591 - page 9
4, The Mower Suspension Arms andFasteners (shown full size below) are found in Bag of Parts, WASHER LOCKWASHER HEX NUT ____00 _ RETAINING O CLIP C O BRACKET RETAINING / WASHER CLIP • LIFT LINK STUD SUSPENSION ARM LOCKWASHER HEX NUT FIGURE 14 RETAINING CL|P 5. The Mower Suspension Arms have "FRONT" Stamped between holes. Place the Suspen ...
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Sears 917.25591 - page 10
POSITION ATTACHMENT HANDLE MOWER ADJUSTMENT Adjust the mower while tractor is parked on level ground or driveway, Make sure tire pressures are 14 PSI in front; 10 PSI in rear. FIAIRPIN CLIP z1 J GAUGE WHEEL CLEVIS PIN _, FIGURE 17 SiDE TO SLIDE ADJUSTMENT 1, Use a ruler to make sure Flanges at rear of mower deck are the same height from the ground ...
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Sears 917.25591 - page 11
1. TO RAISE FRONT_OF MOWER Loosen Nuts "D _, Screw Nuts "C" up onto Suspension Arms (Fig. 20). NOTE; SCREW NUTS "C" ON BOTH SUSPENSION ARMS THE SAME NUMBER OF TURNS SO MOWER WILL REMAIN LEVEL. Tighten Nuts "D" securely. 2. TO LOWER FRONT OF MOWER Loosen Nuts "C'L Screw Nuts "D" down Suspension ...
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Sears 917.25591 - page 12
! f -,_-,-RoH, RUNNER DEFLECTOR FIGURE 23 FIGURE 24 Use the Runner on the right hand side as a guide; the blade cuts approximately an inch outside the runner,, NEVER REMOVE DEFLECTOR. KEEP HANDS AND FEET FROM UNDER MOW- ER, . Before leaving operator s position: a, Shift transmission to neutral, b, Set parking brake° c. Disengage attachment clutch. ...
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Sears 917.25591 - page 13
MOWER MAINTENANCE INSTRUCT,ONS MOWER CLUTCH SWITCH ":'OFF" POSITION , BEFORE MAKING ANY INSPECTION, ADJUSTMENT OR REPAIR: PUSH TRAC- TOR CLUTCH-BRAKE PEDAL COM- PLETELY INTO BRAKE POSITION MOVE SHIFT CONTROL LEVER TO NEUTRAL POSITION. PLACE PARKING BRAKE IN "ENGAGED" POSITION. TURN OFF MOWER CLUTCH SWITCH IFIG. 26). SHUT OF ...
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Sears 917.25591 - page 14
/ CLEAN|NG MOWER I A DISCONNECT SPARK PLUG WIRES TO 1 I _ PREVENT ACCIDENTAL STARTING BE- | I FORE CLEANING. 1 Water pressure from a garden hose wil! remove fresh clippings from underside of mower_ Clean mower after each mowing, FIGURE 28 LUBRtlCATII ON Under normal usage the Mandrels should require lubrication after every 50 hours of operation and ...
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Sears 917.25591 - page 15
OUTER BLADES DRIVE BELT (CENTER TO OUTER MANDRELS) BELT ROUTING DECAL UNDER MOWER DECK COVER, 1o Remove Mower from Tractor(see below)° 2, Remove Top Cover Self Tapping Screws, and Nut from Idler Arm Bolt,. 3, Ro!l Belt over the top of the R.H. Mandrel° 4. Pult Belt off all other Mandrels, 5° Remove any dirt and grass which may have accumulated a ...
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Sears 917.25591 - page 16
NOTE: WHEN OPERATING TRACTOR WITHOUT MOWERi REMOVE IDLER BRACKET FROM FRONT OF TRACTOR. 1, Pull Belt up through Idler Bracket and out of tractor, Use Lever to swing Tension Pulley for Belt removal. 2, Remove Lockwashers and Nuts from Idler Bracket (Figi 32). IDLER BRACKET HER NUT FIGURE 32 LEVER NUT LOCKWASHER SPRING BUSHING ENT LIFT SPRING FIGURE ...
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Sears 917.25591 - page 17
1, CHANGE ENGINE OIL Changing Oil after the first two hours will help eliminate break*in residue which might be damaging to your Engine. NOTE: BE CAREFUL NOT TO ALLOW DIRT TO ENTER THE ENGINE WHEN CHANGING OIL. ao Drain oil with Engine warm. Remove Hood and Grill (see page 24). Place Hose on Oil Drain and loosen Oi! Drain Wing Nut° Catch oil in a ...
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Sears 917.25591 - page 18
_WASHER CARTRIDGE PLATE PAPER CARTRIDGE OIL FOAM PRE-CLEANER FIGURE 36 BODY LUBRICATE THE STEERING PLATE IN AREA OF SECTOR GEAR FRONT AXLE PIVOT FRONT SPINDLE (GREASE FITTING) LEFT 8= RIGHT) FRONT WHEEL (GREASE FITTING} LEFT & RIGHT) (EVERY 15 HOURS IF OPERATING IN VERY DUSTY CONDITIONS) 1.i CLEAN AIR FILTER a. Unscrew Knob (Fig, 36) to remove ...
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Sears 917.25591 - page 19
LUBRICATION (_ SPINDLE C'2_ WHEEL BEARINGS-- BOTH ENDS OF FOOT PEDAL SHAFI' O SAE MOTOR OIL EXTREME PRESSURE LUBRICATING GREASE AMDEX NO, t, SEARS PART NO. 2557R Q REFER TO ENGINE OIL SPEC'S. (UNDER INITIAL PREPARATION IN OWNERS MANUAL) /'SPINDLE (_ _ _WHEEL BEARINGS @ ENGINE (_) -- BOTH ENDS LIFT SHAFT (_) TRANSAXLE -- (CHECK L ...
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Sears 917.25591 - page 20
svs.v I]®® .o..s 1. REPLACE SPARK PLUGS Replace Spark Plugs at the beginning of each season or every 100 hours_ whichever comas first. Gap should be set at .030 inch (Fig. 42). 2_ LUBRICATE BALL JOINTS a Move Rubber Boots to expose Ball Joints on Tie Rods and Steering Link (Fig. 43)_ b. Coat Ball Joints with Silicone Spray Lubricant c. Reposition ...
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Sears 917.25591 - page 21
AS NEEDED 1, Make sure all nuts on bolts are tight and cotter pins are se- cure° Observe all safety precautions, Keep Tractor well lubricated (refer to page 18),, 2o TOE-IN ADJUSTMENT If any parts in Front Axle or Steering Mechanism are being replaced, Toe-In adjustment is required. a, Loosen .Jam Nuts (Fig_ 46) at each end of Tie Rod Adjustment S ...
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Sears 917.25591 - page 22
_HROTTLE i _CABLE J HOLE"A" GOVERNOR CONTROL FIGURE 50 FIGURE 51 R.H. SIDE OF TRACTOR ENGINE PULLEY /. _?_ CLUTCH I IDLER BRACKET 1-1/16" i | .... t NUT "A" TAKE. UP IDLER " ,FIGURE 5:2 5o CARBURETOR ADJUSTMENT Never attempt to change maximum engine speed. This is preset at the factory and should only be changed by a q ...
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Sears 917.25591 - page 23
7, V-BELT REPLACEMENT BELT REMOVAL The belt on this tractor is special for this application. Always replace with the Sears belt number in the parts list. It is not necessary to remove mower° a, Raise hood and disconnect negative ground battery cable. b° Set parking brake (to get belt stack), c_ Loosen (do not remove) two Engine Pulley Belt Guide ...
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Sears 917.25591 - page 24
SCR FIGURE 58 WiRE CONNECTION 9, 10, FINISH Keep tractor finish and seat free of gasoline, oil, insect chemicals or battery electrolyte. Protect painted surfaces with automotive type wax, HOOD REMOVAL a_ Lift Hood_ Disconnect Headlight Wiring Connection (Fig. 58}, bo Unscrew one Screw at rear of each Side Panel {Fi0. 58)° co Pivot Hood and Side Pa ...
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Sears 917.25591 - page 25
TROUBLE SHOOTING POSSIBLE CAUSE WILL NOT START Clutch-Brake Pedal in drive position Attachment Clutch Switch in "ENGAGED" position No gasoline in Fuel Tank or clogged Fuel Line or Fuel Filter Blown Fuse Dead Battery Defective Ignition or loose Wiring Spark Plug fouled POSSIBLE REMEDY Push Pedal into brake position (Fig, 8). Move Lever to ...
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Sears 917.25591 - page 26
GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917,255910 SCHEMATIC, i;vj, - , REDt BLACK RED RED_ AMMETER* FUSE RED 30 AMP IGNITION SWITCH STD365402 POSITION CIRCUIT OFF M-G ON E3-L START B-S LIGHTS WILL NOT REGISTER ON AMMETER° YOUR TRACTOR IS EQUIPPED WITH A SPECIAL ALTERNATOR SYSTEM. THE LIGHTS ARE NOT CONNECTED TO THE BATTERY, BUT HAVE THEIR OWN i EL ...
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Sears 917.25591 - page 27
REPAIR PARTS ELECTRICAL GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917,255910 _35 34 48 43 44 18 KEY PART DESCRIPTION NO. NO. __ 1 STD365410 KeySet -- '_S-T4;_654_0" * Switch - Ignition ._k$_3 11151000 Washer- Lock- Int, Tooth 5t8 3258J Nut - Hex 5/8- 32 5 105791X Ammeter 6 I05382X Switch- Light 7 913BR Battery 8 7603J Tray - Battery 9 C_,, ...
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Sears 917.25591 - page 28
REPAIR PARTS GT 18 TWIN GARDEN TRACTOR.-MODEL NUMBER 917.255910 CHASSIS AND ENCLOSURES 63 12 13 52 18 27 27 27 71 61 :M y M 39 67 E 38 '59 - 28- ...
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Sears 917.25591 - page 29
REPAIR PARTS GT 18 TWIN GARDEN TRACTOR*_MODEL NUMBER 917,255910 CHASSIS AND ENCLOSURES KEY PART DESCRIPTION KEY PART DESCRIPTION NOo NO NO NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 17490612 18 105511X 19 105514X 20 1055t2X 21 19132012 22 105531X 23 I05509X 24 106020X 25 105965X 26_,,_106082X 27 6999R 28 5277J 29 3008,1 30 I05465X 3! 105466X 32 1 ...
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Sears 917.25591 - page 30
REP M PAaT8 GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917.255910 GROUND DRIVE A B 10 _ 14 d#11 (_ 15 U 69 71 49 D l • A 9 59 OPTtONAt. EQUIPMENT 1 Spark Attester Muffler 106664X J K L M 70 N O P Q R @_11 _82 U - 30 - ...
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Sears 917.25591 - page 31
RmPAUR PARTS GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917.255910 GROUND DRIVE KEY PART DESCRIPTION KEY PART DESCRIPTION NO_ NO. NO. NO. 14 15 16 17 18 19 20 2t 22 23 24 25 26 27 28 29 30 3! 32 33 34 35 36 1 J'_-106B37X Bracket, Support 60 2 106035X Engine, 18 H.P., Model No. 422437 61 Type Noo 0721-0t 62 3 13240200 Elbow, Street 63 4 _,_ 9767H V ...
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Sears 917.25591 - page 32
REPA|R PARTS GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917.255910 STEERING 53 ._52 21_,,_ '_'39 37 -40 M 75 L 78 / 48 71 56 30 41 32 63 29 17 13 15 82 i81 83 54 2O 21 22 22 26 26 21 22 27 t85 - 32 - ...
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Sears 917.25591 - page 33
RE PAiR STEERING PARTS GT 18 TWIN GARDEN TRACTOR_-MODEL NUMBER 917,255910 KEY PART DESCRIPTION KEY PART DESCRIPTION NO. NO. NO. NO. t 106230X Tire, t6 x 6,50 --- 8134H Tube, Front (not furnished with tractor) 2 106228X Front Wheel (inc. Key No. 3 and 2 of Key No. 4) 3 278H Fitting, Grease 4 9040H Bearing 5 106045X Spindle, R.H_ 6 6266H Bearing, Thr ...
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Sears 917.25591 - page 34
REPAM PART8 MOWER L ! FT 54 GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917.255910 5o 17 1! 14 ! 46 43 5g 60 58 49 26 24 23 11 33 41 39 40 45 44 ...
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Sears 917.25591 - page 35
REPAIR PART8 MOWER LIFT GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917.255910 KEY NO. 1 2 3 4 5 6 7 8 9 t0 !1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 3O 31 PART DESCRIPTION KEY PART DESCRIPTION NO. NO. NO. 100734K Handle. Adiust, Lift STD541237 *Nut, He× Jam, 3/B - 16 1063!8X Rod, Adiust, Lift STD570907 *Pin, Cotter, 3/32 x 3/4 2876H Sp ...
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Sears 917.25591 - page 36
REPAIR P_T8 GT 18 TWiN GARDEN TRACTOR--MODEL NUMBER 917.255910 MOWER 38 37 4O 51 35 12 G 6O 56 51 47 45 71 47 / 44 55 49 34 18 17 15 17 16 16 17 15 D 35 35 _!/6 32 31 - 36 + ...
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Sears 917.25591 - page 37
MOWER a ,RT8 GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917.255910 KEY PART NO. NO. DESCRIPTION KEY PART DESCRIPTION NO. NO. ! 2 3 4 5 6 7 8 9 10 11 12 13 14 106579X Housing, Mower 106022X Cover - Drive, Deck 17490508 Screw - Hex Washer Thd. Rot! 5/t6 - 18 x 1/2 7631J Runner, L.H. 72110505 Bolt, Cam 5/t6- 18 x 5/8 STD551131 *Washer-Lock, 5/16 STD54t031 ...
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Sears 917.25591 - page 38
REPAmR PARTS GT 18 TWIN GARDEN TRACTOR-oMODEL NUMBER 917.255910 TRANSAXLE 3 73 61 59 5_ 54 69 70 " 49 7 14 40 41 24 ...
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Sears 917.25591 - page 39
REPAmR PARTS GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917.255910 TRANSAXLE KEY PART DESCRIPTtO"J KEY PART DESCRIPTION NO,, NO, NO, NO 1 2 3 4 5 6 7 B 9 I0 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 3O 31 32 33 34 35 36 37 38 39 40 41 42 45 46 47 48 4197R Axle Shaft 49 4895H 6845R Retaining Ring 50 4222R 4199R Final Drive Gear 51 1 ...
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Sears 917.25591 - page 40
REPAHR PARTS GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917.255910 ENGINE-MODEL NUMBER 422437, TYPE NUMBER 0721-01 CYLINDER, CRANKSHAFT AND ENGINE BASE GROUP 52 3 38 17 16 29 62 27 66 13 - 40 - ...
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Sears 917.25591 - page 41
REPAIR PARTS GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917.255910 ENGINE_-MODEL HUMBER 422437, TYPE NUMBER 0721-01 CYLINDER, CRANKSHAFT AND ENGINE BASE GROUP KEY PART DESCRIPTION KEY PART DESCRIPTION NO, NO. NO NO, I 394900 2 391086 3 212461 4 212462 5 270984 8 270983 7 393243 8 393153 9 27803 10 93394 11 270882 tl 271145 11 271148 12 93113 13 93111 t ...
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Sears 917.25591 - page 42
R_PAIR PARTS .......... GT 18 TWIN GARDEN ENGINE..M TRACTOR. ODEL Nit InA_,,,,,,,. _ "MODEL NUMBER AIR CLEANER-CARBURETOR GROUp NUMBER 0721-01 "',==H 422437, TYPE 917.255910 34 55 ...
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Sears 917.25591 - page 43
$ EPABR PARTS GT 18 TWIN GARDEN TRACTOR-MODEL NUMBER 917.255910 ENGINE-MODEL NUMBER 422437, TYPE NUMBER 0721-01 AIR CLEANER-CARBURETOR GROUP KEY PART DESCRIPTION KEY PART DESCRIPTION NO. NO, NO. NOo 1 280185 2 280168 3 _2970 4 271412 5 270B84 0 93415 7 032O8 8 398620 397241 10 212718 11 231209 12 282681 13 03499 14 221939 15 392072 16 9102O 17 2615 ...
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Sears 917.25591 - page 44
REPAIR PARTS .... GT 18 TWIN GARDEN TRACTOR*-MODEL NUMBER 917.255910 ENGINE-MODEL NUMBER 422437, TYPE NUMBER 0721_01 STARTER MOTOR GROUP 1 2 31 9 11 33 --_ 29 28 I_27 23 20 2_23 __J 17 KEY NC)_ 2 3 4 5 6 7 8 I0 11 12 13 14 15 PART DESCRIPTION KEY PART DESCRIPTION NO, NO. NO. 394891 Armature Group (Inc_ Key No_s. 16 395538 2,3 & 5) 17 395537 394 ...
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Sears 917.25591 - page 45
RI IR PARTS GT 18 TWIN GARDEN TRACTOR--MODEL NUMBER 917.255910 ENGINE-MODEL NUMBER 422437, TYPE NUMBER 0721-01 MUFFLER, AIR GUIDE AND HOUSING GROUP KEY NO, I 2 3 4 5 PART NO. 222848 222849 93163 392681 93158 DESCRIPTION Cover - Air Guide Cover - Air Guide Screw- Sere Housing- Blower Screw. Sere KEY PART NO, NO, 6 7 8 222847 222846 93777 392934 DESC ...
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Sears 917.25591 - page 46
SERVICS NOTES - 46 ...
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Sears 917.25591 - page 47
I SIGHT AND HOLD THSS LEVEL WITH SKY LaNE OR TREE ® Operate your Tractor up and down the face of slopes (not greater than 15°); never across the face, Make turns gradu* ally to prevent tipping or toss of control. Exercise extreme caution when changing direction on slopes. ...
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Sears 917.25591 - page 48
S__S OWNERS MANUAL MODEL NO. 917.255910 HOW TO ORDER REPAIR PARTS GT 18 TWIN 6 SPEED GARDEN TRACTOR The Model Number will be found on the Model Plate attached to the Drawbar. Always mention the Model Number when re- questing service or repair parts for your Garden Tractor. All parts listed herein may be ordered from any Sears Service Center/Departm ...
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