MODEL NO, 35035 THRU MODEL NO 38052 THRU FORM NO. 3313-475 Rev, A OPERATOR'S MANUAL L 3521 & 521 SNOW THROWER A\ SAFETY INSTRUCTIONS The 3521 and 521 SNOW THROWERS meet or exceed the Outdoor Power Equipment Institute’s satiety standards for snow throwers; thus, Toto proudly displays the OPE! safety seal.
SAFETY INSTRUCTIONS be picked up and thrown if the skids are not adjusted so auger housing clears all rocks. 14. STAY BEHIND THE HANDLES AND AWAY FROM DISCHARGE OPENING WHILE OPERATING THE SNOW THROWER. Keep face, hands, feet and any other part of your vary or clothing away from concealed, moving or rotating parts. 15 Do not make any adjustments while the engine is running. with the exception of carburetor adjustments, 16. Never operate snow thrower near bystanders, glass enclosures.
TABLE OF CONTENTS Page Safety decals Draining Ga saline . ., Loose Parts L Lubricating Snow thrower Setting Up Instructions. . . Changing Crankcase Oif Install Handle. . .. Auger Gear Box .. .. Adjusting Skids and Scraper Bated . . . Adjusting Auger Control If Unit Will Not Throw Brow, .. . 13 Replacing Montpelier Drive Belt. .13-14 Replacing Traction Drive Belt . . . Adjusting Traction Duse . . Adjusting Speed Selector . Replacing Spark Plug Adjusting Carburetor Preparing Snow thrower For Storage’ . .. .
SAFETY DECALS CHOKE STRANGLE —— AN 7 ABOVE CHOKE MODEL 521 {Part No. 39-3850} -~ NEXT TO CHOKE ! / MODEL 3521 {Part No. 39-3840) i 3L ON CHUTE CONTROL BRACKET (Part No. 63-3510) ON ENGINE {Part No. 62.7290) i e P BRI ON DISCHARGE CHUTE LTy {Part Na. 63.3740) LOOSE PARTS Part Qty.
SETTING UP INSTRUCTIONS Note: Left and right sides of snow thrower are determined by standing in the normal operating position. INSTALL HANDLE 1. Remove tie straps securing control rods to handle. 2. Position left handle on side of unit, align handle mount noels with holes in side plate, and secure with two cap screws and pyramidal washers until finger tight {Fig. 1). Repeat procedure on right side, Make sure handles are at same height {parallel} before tightening handle resews in both sides of unit.
SETTING UP INSTRUCTIONS 5. Slowly pull machine backward while slowly depressing traction control lever toward handle, Adjustment is correct when wheels stop turning and the distance between the top of the traction control lever and the center of the handle is 4% inches {11.6 em} {Fig. ). 6. Adjust flange nuts on traction rod {Fig. 3} until dimension is attained. INSTALL AUGER RIVE CONTROL LINKAGE 1. Loosen jam nut above clevis on upper control rod {Fig. 6. 2.
SETTING UP IN Figure 9 mainsails head screw Flange hea sew and Paige 1.0, wire INSTALL CHUTE CONTROL 1. Assemble chute control bracket and rod to left side of handle with caseworker and lockout, Leave Jock nut loose unfit assembly is completely mounted (Fig. 10} Figure 10 Crete control bracket and rou Capstone any knuckle Figure 11 1. Worm gear and rocket 2. Pyramidal washer and lock nit 3 Mounting Flange ST RUCTIONS 2. Apply No. 2 general purpose grease 10 worm gear.
PREPARATION BEFORE STARTING FILL CRANKCASE WITH OIL. The engine is shipped from the factory without oil in the crankcase. Therefore, before trying to start engine, oil must be added to the crankcase IMPORTANT: Check level of oil every § operating hours or each time unit is used. initially, change oil after the first 2 hours of operation; thereafter, under normal conditions, change oif after every Z5 hours of operation.
CONTROLS Auger Drive Control (Fig. 14) — Control has two positions: ENGAGE and DISENGAGE. To engage auger and impeller, compress ravel against night handle grip. To disengage release lever, Traction Control {Fig. 14} — To achieve traction, lever must be compressed against eft handle grip. To stop traction. release ever \ Figure 14 Auger doe control Traction control Speed seignior Ignition switch Discharge site control Fuel hist-0ft valves Che estimator handier Emma e Speed Selector (Fig 14) — The control ha
STARTING AND STOPPING INSTRUCTIONS TO START ENGINE: Note: (Made! 521 only) If engine is operated when temperature is <40° higher remove carburetor heater box (Fig. 18). However. the heater box must be reinstalled when temperature falls below +40° remove heater box A Remove fillips screws and hex head screw securing heater bax in place. Pull choke knob off choke rod (Fig. 16} B. Lift heater box up and away from the engine.
OPERATING INSTRUCTIONS 6. Discharge snow downwind whenever impassible. and overlap cache 10 assure complete snow removal. 1 whi lip, shift into a lower gear which reduces forward speed 7. Normally. chains are not required. however, tire chains are recommenced when the = 8. lonesome snow and cold weather conditions some controls and moving parts may freeze solid. Therefore, when any control becomes rad to operate. stop the engine: then check all parts for freeze up.
CHANGING CRANKCASE OiL Initially, change oil after the first 2 hours ot engine operation; thereafter, change oil after every 25 hours of engine operation or annually. i possible, run engine just before changing oil because warm cil flows better and carries more contaminants than cold oif Note: Drain oil when fuel tank 15 empty to prevent spilling gasoline 1. Pull high tension wire off spark plug and make surf wire does not contact plug accidentally (Fig. 16) 2.
MAINTENANCE Figure 22 1 Scraper 2. Mounting screws Nate: Do not use step 3 if units to be used on smooth or hard surfaces 3. Loosen four flange nuts {Fig. 21) securing both skids to auger side plates. Nexis, slide skids down as far as possible so augers as far trim levee surface as skid adjustment allows: then tighten flange nuts Note: If bottom scraper is excessively worn, replace it ADJUSTING AUGER CONTROL IF UNIT WILL NOT THROW SNOW 1.
MAINTENANCE 3. Remove auger drive belt from engine pulley and large auger/impeller pulley (Fig. 24} Figure 26 1. Traction drive bat 2. Temperamental drive bat 4. Install new belt around large auger/ impeller pulley (Fig. 25). Next, lap belt over engine pulley, making sure that belt is on inside of idler pulley and wire bat guide {Fig. 25). 5. install belt cover with two thread forming SCREWS.
MAINTENANCE 2. Adjust upper lockout (Fig. 271 until there is approximately 5 inches {12.7cm} between the center of the handle and the tip of the traction control lever (Fig. 28} N Figure 28 1. Traction control fever 2, Approximately 5 incise (12.7 cm) 3. Test run unit 1o check adjustment. {Wheels should spin when holding handles.) Repeat adjustment, if necessary, in 172 inch {13 mm) increments, ADJUSTING SPEED SELECTOR i there is slow or no ground speed in No.
MAINTENANCE REPLACING SPARK PLUG Correct spark plug to use is a Champion RJ17LM or Auto lite RANT, and correct air gap is 0.030 of an inch {0.76 mm). Since air gap between center and side electrodes of the spark plug increases gradually during normal engine operation, install a new plug after every 25 hours of engine operation 1. Clean area around spark plug so foreign matter cannot fall into cylinder when plug is removed. 2.
MAINTENANCE 5 Rotate power adjusting screw (Fig. 33) clockwise turn at a time until engine misses because of a lean gasoline mixture. Then rotate screw counterclockwise turn at & time until engine runs unevenly because of a rich gasoline mixture Next, rotate power adjusting screw clockwise. hack to the midpoint between the rich and neat setting 5o engine runs smoothly. Note: Wait several seconds between each 1/8 turn smelting so engine can adjust to the new fuel mixture 6. Move throttle to idle speed.
MAINTENANCE RECORD Summer Storage Spark Plug Date Hours Used Gil Change Lubrication Gap Fail Service 18
MAINTENANCE RECORD Date Hours Used Uil Change | Lubrication Summer Storage Fall Service Spark Plug Gap 18