OPERATOR’S MANUAL MODELS 615 E645E E665E IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, 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.
SECTION 1: IMPORTANT SAFE OPERATION PRACTICES 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 SNOW THROWER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY. WHEN YOU SEE THIS SYMBOLHEED ITS WARNING.
• Never operate the machine at high transport speeds on slippery surfaces. Look behind and use care when backing. • If the snow thrower should start to vibrate abnormally, stop the engine and check immediately for the cause. Vibration is generally a warning of trouble. • Never direct discharge at bystanders or allow anyone in front of unit.
SECTION 2: FINDING YOUR MODEL NUMBER This Operators Manual is an important part of your new snow thrower. It will help you assemble, prepare and maintain your snow thrower. Please read and understand what it says. Before you start to prepare your snow thrower for its first use, please locate the model plate and copy the information from it in this Operators Manual. The information on the model plate is very important if you need help from your dealer or the MTD customer support department.
SECTION 4: CONTENTS OF HARDWARE PACK Lay out the hardware according to the illustration for identification purposes. Part numbers are shown in parentheses. (Hardware pack may contain extra items which are not used on your unit.
SECTION 5: ASSEMBLY INSTRUCTIONS IMPORTANT: After assembly, service engine TOOLS REQUIRED FOR ASSEMBLY with gasoline, and check oil level as instructed in the separate engine manual packed with your unit. • (1) 3/8" or adjustable wrench NOTE: References to right or left side of the snow • (2) 1/2" or adjustable wrench • (2) 7/16" or adjustable wrench thrower are determined from behind the unit in the operating position.
ASSEMBLING THE HANDLES AND HANDLE PANEL (Hardware B) Lock Washer (C) 1. Raise both clutch grips. 2. Lower left and right handles down through handle panel between the pivot rod and the clutch grips and attach using hardware B. See Figure 2. Saddle (I) Hex Bolt (B) Hex Bolt (A) Clutch Grip Left Handle Lock Washer (C) Figure 4 ATTACHING SPEED SELECTOR PLATE AND SHIFT LEVER (Hardware C) Pivot Rod Hex Nuts(D) 1. Assemble the speed selector plate to the outside of the handles as shown in Figure 5.
ATTACHING THE CLUTCH CABLES (Hardware D) Note: Lock nuts cannot be threaded onto a bolt by hand. Tighten with 2 7/16” wrenches. This type of nut is used where vibration occurs. 1. Thread hex nuts (J) onto the “Z” fittings (R) (see inset,). Insert “Z” fitting into hole in clutch grips. See Figure 6. Chute Assembly Hex Bolt “Z” Fitting (R) Hex Lock Nut Hex Nut (J) Chute Flange Keeper Figure 7 ATTACHING THE CHUTE CRANK (Hardware F) Figure 6 2.
Release the clutch grip. The cable should be straight. Make certain you can depress the auger drive clutch grip against the left handle completely. If necessary, loosen the hex lock nut and thread the cable in (for less slack) or out (for more slack) as necessary. Refer to Figure 12. Recheck the adjustment. Tighten the lock nut against the cable when correct adjustment is reached. 3.
ADJUSTING THE SKID SHOES SECTION 6: CONTROLS The space between the shave plate and the ground can be adjusted. For close snow removal on a smooth surface, raise the skid shoes into a high position on the auger housing. Use a middle or lower position when the area to be cleared is uneven. See Figure 13.
THROTTLE CONTROL (See Figure 15) The throttle control is located on the engine. It regulates the speed of the engine. Primer Choke SAFETY IGNITION KEY (See Figure 15) The ignition key must be inserted in the switch before the unit will start. Remove the ignition key when snow thrower is not in use. FUEL CUTOFF VALVE The fuel cutoff valve, located under the fuel tank, controls fuel flow from tank.
Electric Starter Recoil Starter: 1. Rotate choke knob to FULL choke position (cold engine start). 2. If engine is warm, place choke in OFF position instead of FULL. 3. Push primer button two or three times for cold engine start. See Figure 17. 4. If engine is warm, push primer button once only. WARNING: The optional electric starter is equipped with a three-wire power cord and plug, and is designed to operate on 120 volt AC household current.
TO ENGAGE DRIVE OPERATING TIPS 1. With the engine running near top speed, move shift lever into one of the five FORWARD positions or two REVERSE positions. Select a speed appropriate for the snow conditions that exist. Use the slower speeds until you are familiar with the operation of the snow thrower. 2. Squeeze the auger clutch grip and the augers will turn. Release it and the augers will stop. 3. Squeeze the drive clutch grip and the snow thrower will move. Release it and drive motion will stop. 4.
NOTE: If you placed plastic under the gas cap, be ENGINE certain to remove it. Refer to engine manual for engine lubrication instructions. AUGER CLUTCH ADJUSTMENT WARNING: When following instruct- To adjust the auger clutch, refer to Final Assembly and Adjustments section on page 9. ions in separate engine manual for draining oil, be sure to protect frame to avoid oil dripping onto transmission parts.
DRIVE AND SHIFTING MECHANISM • To remove shave plate, remove the carriage bolts, cupped washers and hex nuts which attach it to the snow thrower housing. Reassemble new shave plate, making sure heads of the carriage bolts are to the inside of the housing. Tighten securely. Remove rear cover. Oil any chains, sprockets, gears, bearings, shafts, and shifting mechanism at least once a season. Use engine oil or a spray lubricant. Avoid getting oil on rubber friction wheel and aluminum drive plate.
DRIVE BELT 1. Follow steps 1 through 4 of previous instructions. 2. Pull idler pulley up, and lift belt off engine pulley and friction wheel disc. See Figure 23. 3. Using a 7/16" wrench, loosen the nut on the stop bolt until the support bracket rests on the auger pulley. See Figure 25. 4. Slip belt between friction wheel and friction wheel disc. See Figure 25. Remove and replace belt. Reassemble following the instructions in reverse order.
7. Slide the gear shaft to the right, then slide the friction wheel assembly from the shaft. 8. Remove the six screws from the friction wheel assembly (three from each side). Remove the friction wheel rubber from between the friction wheel plate. 9. Reassemble new friction wheel rubber to the friction wheel assembly, tightening the six screws in rotation and with equal force. 10. Slide friction wheel assembly back onto the gear shaft.
SECTION 12: TROUBLE SHOOTING GUIDE Trouble Possible Cause(s) Corrective Action Engine fails to start Fuel tank empty, or stale fuel. Fill tank with clean, fresh gasoline. Fuel will not last over thirty days unless a fuel stabilizer is used. Clean fuel line. Blocked fuel line. Move switch to ON position Choke not in ON position Clean, adjust gap or replace. Faulty spark plug. Key not in switch on engine. Insert key. Connect spark plug wire. Spark plug wire disconnected. Primer button not depressed.
SECTION 13: ILLUSTRATED PARTS GEAR ASSEMBLY Ref. No. 1 2 3 4 Part No. 618-0123 618-0124 710-0642 711-1020 711-0908 5 714-0161 6 715-0143 7 717-0526 8 717-0528 9 718-0186 10 721-0325 Description Housing—L.H. Housing—R.H. Screw Spiral Axle 22" Spiral Axle 24" Key Pin-Spiral Shaft-Worm Gear-Worm Collar-Thrust Plug Ref. No. 11 12 13 14 15 16 17 18 19 Part No.
HANDLE ASSEMBLY 57 20
HANDLE ASSEMBLY Ref. No. Part No. 1 784-5717 784-5718 2 710-0788 3 705-5233 4 705-5234 5 746-0897 6 746-0898 7 731-1500 8 747-0984 9 746-0778 10 712-0287 11 710-0851 12 732-0733 13 735-0199A 15 847-0904 18 710-0262 19 710-3008 20 710-3180 23 712-0324 25 712-0267 27 712-0429 28 710-0599 29 736-0199 30 736-0242 31 712-0121 32 750-1032 Description Control Panel Ass’y (615) Control Panel Ass’y (E645, E665) Hex Bolt 1/4-20 x 1.
BLOWER HOUSING 22
Ref. No. 1 2 3 4 5 6 7 8 9 10 11 13 16 18 20 21 23 Part No. 784-5618 05931 618-0152 618-0120 684-0052 684-0039A Description Housing, Bearing Housing, Bearing Gear Assembly (22") Gear Assembly (24") 22" Housing Assembly 24" Housing Assembly 684-0065 605-5252 605-5188 605-5253 605-5189 705-5226 710-0167 710-0604 710-0167 710-0451 710-0890A 712-0116 712-0429 712-0267 712-3027 Impeller Assembly Spiral, 22" R.H. Spiral, 24" R.H. Spiral, 22" L.H. Spiral, 24" L.H.
FRAME ASSEMBLY 24
FRAME ASSEMBLY Ref. No. 1 2 3 4 5 6 7 9 10 11 13 14 15 16 17 19 20 21 22 23 24 Part No. 618-0063 656-0012A 684-0013 684-0021 684-0030 684-0042A 710-0654A 710-0599 710-0896 710-0788 712-0711 714-0126 714-0143 714-0474 715-0249 717-1445 717-1444 732-0264 736-0105 736-0160 736-0188 Ref. Description No. Bearing Ass’y. 25 Ass’y., Friction Wheel Disc 30 Rod Shift, Wheel Drive 31 Brkt. Ass’y. Friction Wheel 31 Frame Ass’y., 600 S/T 32 Wheel Friction 33 Hex Self-Tap Screw 34 Scr., Hex Wash. Hd., TT1/4-20 x .
ENGINE AND “V” BELTS Ref. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Part No. 05896A 629-0071 710-0117 710-0157 710-0230 710-0342 710-0696 710-0888 710-0896 712-0181 731-1324 732-0710 736-0119 736-0242 736-0247 736-0329 Description Bracket Cord, Extension Screw Screw Screw Screw Screw Screw Screw Nut, Hex Belt Cover Spring Washer—Flat Washer—Bell Washer—Flat Washer—Lock Ref. No. 17 18 19 20 21 22 23 24 25 26 27 28 Part No.
ENGINE AND “V” BELTS Ref. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Part No. 05896A 629-0071 710-0117 710-0157 710-0230 710-0342 710-0696 710-0888 710-0896 712-0181 731-1324 732-0339 736-0119 736-0242 736-0247 Description Bracket-Idler Cord-Extension 110V† Screw-Hex Screw-Hex Screw-Hex Screw-Hex Screw-Hex Screw-Hex Screw-Hex Nut-Hex Cover-Belt Spring Washer-Lock Washer-Bell Washer-Flat Ref. No. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 † Models 645 and 665 only 27 Part No.
MANUFACTURER’S LIMITED WARRANTY FOR: For TWO YEARS from the date of retail purchase within the United States of America, its possessions and territories, MTD PRODUCTS INC will, at its option, repair or replace, for the original purchaser, free of charge, any part or parts found to be defective in material or workmanship.
