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MTD 737-0168 - page 1
Two-Stage Snow Thrower Styles C & D Oper ator’ s Man ual IMPOR T ANT : READ SAFETY R ULE S AND INSTR UCTIONS CAREFULL Y Warning: This unit is equipped with an internal co mbustion engine and should not be used on or nea r any unimproved forest-covered, brush - covered or grass-covered land unless the engine’s exhaust system is e quipped wit ...
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MTD 737-0168 - page 2
2 TABLE OF CONTENTS FINDING MODEL NUMBER This Operator’s Ma nual is an important part of yo ur new snow thrower. It w ill help you assemb le, prepare and maintain the unit fo r best performance. Plea se read and understand wh at it says. Before you start as sembling your new equipment , plea se locate th e model plate on t he equipment and copy t ...
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MTD 737-0168 - page 3
3 SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: Engine Exhaust, some of it s constituents , and cer tain vehicle components contain or emit chemicals known to the State of Calif or nia to cause cancer , birth defects or other reproductiv e harm . DANGER: This machine w as built to be op erated according to t he rules for saf e oper ation i ...
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MTD 737-0168 - page 4
4 Operation 1. Do not put hands or feet near rotating p arts, in the auger/impeller housing or chute assembly. Contact with the rotating parts can amputate hand s and feet. 2. The aug er/impeller contr ol lever is a safety device. Never bypa ss its opera tion. Doing so makes the machine uns afe and may caus e personal injury . 3. The control levers ...
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MTD 737-0168 - page 5
5 YOUR RESPONSIBILITY Restrict the use of this power machine to persons who read, understand and follow the warnings and in structions in this manual and on the machine. Do not modify engine To avoid serious injury or de ath, do not modify engine in any way. Tampering with the gover nor setting can lead to a r unaway e ngine and cause it t o operat ...
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MTD 737-0168 - page 6
6 SECTION 2: ASSEMBLING YOUR SNOW THROWER NOTE: References to rig ht or left side of the snow thrower are de termined from behind th e unit in the operating p osition (stand ing directly be hind the snow thrower, facing th e handle panel). NOTE: This Operator’s Manu al covers several models. Snow thrower f eatures vary by model . Not all features ...
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MTD 737-0168 - page 7
7 Attaching the Chute Assembly and Directional Control 1. Apply a light lubricant (i.e. 3-in- 1 oil) to the rim of the chute base and position t he chute assembly over the base. 2. Close the flange keepe rs to secure the chute assembly to the chut e base. The flange ke epers will click into place when properly secure. 3. Remo ve the flat w asher an ...
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MTD 737-0168 - page 8
8 SECTION 3: KNOW YOUR SNOW THROWER WARNING: Read, understa nd, and follow all instructions and wa rnings on the machine and in this manual before operating. NOTE: For detailed starti ng instructions and more information on all engine controls, r efer to the Tecumseh Engines manual packed separately and Starting The Engine on page 10 of this manual ...
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MTD 737-0168 - page 9
9 Auger Control The auger cont rol is located on the left handle. Squeeze the co ntrol grip against the handle to en gage the augers and start sno w throwing action. Release to stop. Drive Contro l The drive control is located on the right hand le. Squeeze the co ntrol grip against the handle to en gage the wheel drive. Release to stop. Chute Direc ...
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MTD 737-0168 - page 10
10 SECTION 4: OPERATING YOUR SNOW THROWER Before Starting WARNING: Read, understand, and follow all instructions and wa rnings on the machine and in this manual befor e operating. Gas & Oil Fill-Up Service the eng ine with gasoline and oil a s instructed in the Tecumseh Engines ma nual packed separately with your snow thrower. Read instructions ...
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MTD 737-0168 - page 11
11 • Pull the starter handle with a firm, rapid stroke. IMPORT ANT: Do not releas e the ha ndle and allow it to snap back. Keep a firm hold on the star ter handle and allow it to slowly recoil. • As the engine warms, slowly rotate the choke control to t he OFF posit ion. If the engine falte rs, quickly rotate the ch oke control back to the FULL ...
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MTD 737-0168 - page 12
12 • Repeat Auger Con trol Test to verify proper adjustment has been achieved. Figure 1 Drive / Auger Lock (on models so equipped) The drive/aug er lock allows the user to operate the snow thrower with one hand, leaving the left hand free to operate the ch ute directional control. • Engage both the Auger Control and t he Dri ve Control at the s ...
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MTD 737-0168 - page 13
13 SECTION 5: MAKING ADJUSTMENTS Drive Contro l When the dr ive control is released and in the disengaged “u p” position, the cable should have very little slack. It sh ould NOT be tight. Check the adjustment of th e drive control as follows: 1. With the drive control released , push the snow thrower gently forward . The unit should roll freely ...
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MTD 737-0168 - page 14
14 Tire Pre ss u re • Before op erating, ch eck tire pre ssure and reduce pressure to between 15 psi and 20 psi. NOTE: If the tire pressure is not equ al in both tires, the unit may pull to one side or the other. Auger Control Refer to Auger Control Test on Page 11 to adjust the auger control. Chute Assembly The distance snow is thrown can be adj ...
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MTD 737-0168 - page 15
15 SECTION 6: MAINTAINING AND SERVICING YOUR SNOW THROWER WARNING: Before lubricating, repairing, or inspecting, disengag e all controls and stop engine. Wait until all moving parts have come to a complete stop. Engine Refer to the sepa rate Tecumseh Engines manual packed with your unit fo r all engine maintenance . Lubrication Engine Refer to the ...
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MTD 737-0168 - page 16
16 Auger Belt Replacement WARNING: Before servicing, disconnect spark plug wire and gr ound it against the engine to prev ent uninten ded starting. To remove a nd replace your snow t hrower’s auger b elt, proceed as follows: 1. Remove the plastic belt cove r on the front of the engine by removing the two self-t apping screws. • Drain the ga sol ...
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MTD 737-0168 - page 17
17 Drive Belt Replacement WARNING: Before servicing, disconnect spark plug wire and gr ound it against the engine to prev ent uninten ded starting. To remove a nd replace your snow t hrower’s auger b elt, proceed as follows: 1. Remove the plastic belt cove r on the front of the engine by removing the two self-t apping screws. • Drain the ga sol ...
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MTD 737-0168 - page 18
18 Friction Wheel Removal If the snow throwe r fails to drive with the driv e control engaged, and pe rforming the drive control cable adjustment on page 15 f ails to correct the problem, th e friction wheel may need to be r eplaced. Follow the instructions below. Examine the friction whe el for signs of wear or cracking and replace if ne cessary ? ...
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MTD 737-0168 - page 19
19 Augers • The augers a re secured to the spiral shaft with two shear pins and cotter pins. If the auger should st rike a foreign object or ice ja m, the snow thro wer is designed so that the pins may sh ear. Refer to F igure 8. • If the augers will no t turn, check to see if the pins have sheare d. One set of replac ement shear pin s has been ...
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MTD 737-0168 - page 20
20 SECTION 8: TROUBLE SHOOTING GUIDE NOTE: For repairs beyond t he minor adju stments abov e, contact y our local au thorized se rvice dealer. T roub le P ossible Cause (s) Corrective Action Engine fails to start Fuel t ank empty, or stale fuel. Blocked fuel line. Choke control not in ON p osition Faulty spark plug. Ignition key not present. Spark ...
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MTD 737-0168 - page 21
21 NOTES ...
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MTD 737-0168 - page 22
22 42 43 44 3 41 4 20 39 37 28 6 13 17 8 40 1 2 20 14 10 38 25 32 31 33 27 26 8 30 35 36 3 45 46 7 34 9 8 19 23 22 24 21 11 16 29 5 15 18 29 12 SECTION 9: PARTS LIST ...
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MTD 737-0168 - page 23
23 Styles C & D REF . NO . PA R T NO . DESCRIPTION 1 684-04106A Handle Ass’y , Engageme nt RH Black 2 684-04105A Handle Ass’y , Engagement, LH Black 3 710-0726 Screw , Self-tapping , 5/16-12, 0.750 4 710-1233 Screw , Machine, #10-24, 1.375 5 710-04164 Screw , #8-18 x .375 6 712-0161 Nut, He x Lock, #10-24, Gr2, Nylon 7 712-04063 Nut, Flange ...
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MTD 737-0168 - page 24
24 27 27 50 46 49 52 59 56 60 33 29 33 28 28 51 45 30* 31 34 32 53 57 48 55 2 7 35 4 4 8 44 8 6 21 23 12 7 14 18 61 15 24 3 22 9 38 40 4 36 1 16 5 13 26 37 41 8 6 8 43 41 64 42 25 62 54 58 47 9 17 63 Styles C & D ...
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MTD 737-0168 - page 25
25 Styles C & D REF . NO . PA R T NO . DESCRIPTION 1 731-2643 Clean Out Tool 2 684-04057 Impeller Assembly, 12” Diameter 3 710-0347 Hex Screw, 3/8-16, 1.75, Gr5 , Std 4 710-0451 Bolt, Carriage, 5/16-18, .750 Gr1 5 710-0703 Screw, Carriage, 1/4-20, .75, Gr5 6 710-0726 Screw, Self-t apping, 5/16-12, 0.750 7 712-04063 Nut, Flange Lock, 5/16-18 , ...
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MTD 737-0168 - page 26
26 40 51 47 57 53 48 56 58 7 52 7 46 49 59 44 43 54 50 17 41 55 58 42 36 32 35 34 9 28 19 18 30 20 24 7 29 13 33 23 11 5 22 3 24 15 21 24 6 1 16 12 14 2 14 10 4 38 9 9 28 31 9 37 8 20 25 7 26 27 39 9 4 65 61 63 62 64 60 45 9 Styles C & D ...
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MTD 737-0168 - page 27
27 Styles C & D Wheel Assembly Complete Wheel Size Rim Onl y Tire Only Air V alve 634-04144 13 x 4 634-04151 734-1732 734-0255 634-04143 13 x 5 634-04151 734-1527 734-0255 634-04142 15 x 5 634-04151 734-1859 734-0255 634-04141 16 x 4.8 634-04140 734-1530 734-0255 NOTE: Snow thro wer features and components va ry by model . NOT all parts listed ...
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MTD 737-0168 - page 28
MANUF A CTURER’S LIMITED W ARRANTY FOR: The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its poss essions and territories. “MTD”warrants this product ag ai nst defects in material and workmanship for a period of two (2) years commen cing on the date of original p ...
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