FORM NO. 3312-884 MODEL NO. 38035 — & UP MODEL NO, 38052 — & UP OPERATOR’S h MANUAL 3521 & 521 SNOW THROWER The following instructions are comparable to the Instructions For Safe Snow throwing adopted by ANSI — American National Standards institute. The snow thrower is designed and tested to offer reasonably safe service: however, failure to operate it in accordance with the fallowing Salty Instructions MAY RESULT IN PERSONAL INJURY BEFORE OPERATING 1.
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 body 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. 18 Never operate snow thrower near bystanders, glass enclosures.
SAFETY DECALS e CHOKE » 0} STRANGLE mvfigm o (ML IV ATV ele woo ONRUSH. ONLY. A T ON CHUTE CONTROL BRACKET \ / (Part No. 29-6370} [0 QL NEXT TO CHOKE MODEL 3521 {Paris No, 35-3840} WARNING ATTENTION HOT SURFACES i, BRI T ON DISCHARGE CHUTE ON ENGINE {Part No. 53-7660) {Part No.
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 handier on side of unit, align handier mount holes with holes in side plate and secure with two cap screws and pyramidal washers untie finger tight (Fig. 1}. Repeat procedure on right side. Make sure handles are at same height (parallel} before tightening handier screws on both sides of unit.
SETTING UP INSTRUCTIONS 2. Align holes in clevis and lower control rod. install with clevis pin (Fig. 5) Figure § dar it Clevis Upper control rod Lower control rag Clovis pin Cotter o Sown 3. Check the distance between the center of the handle and tip of the auger control lever {Fig. ). Distance should be approximately 7% inches {19 cm} Figure & 1. Auger contra lever 2. Approximately 77 cinches adjust! distance.
SETTING UP INSTRUCTIONS Figure 8 3. Mail 1 D wie and prunes head screw 2 Flange head cap screw and fare 1.0. wire INSTALL CHUTE CONTROL 1. Assemble chute control bracket and rod to left side of handier with cap screw and lockout. Leave lockout loose until assembly is completely mounted (Fig. 9} Figure 9@ ' Chute control bracket and rod 2. Cap screw and lockout Figure 10 3. Worm agar and brace! B Pyramidal washer and urination 2. Apply No. 2 general purpose grease to worm gear.
PREPARATION BEFORE STARTING FILL CRANKCASE WITH OIL Engineering shipped from the factory without oil in the crankcase. Therefore, before trying to start engine. ol must be added to the crankcase. IMPORTANT: Check level of oil every 5 operating hours or gate time unit is used. Initially, change oil after the first 2 hours of operation; thereafter, under normal conditions, change oil after every 25 hours of operation. However, change oil more frequently when engine is operated in extremely direly conditions.
CONTROLS Auger Drive Cotillion {Fig. 13} — Control has two positions: ENGAGE and DISENGAGE. To engage auger and impeller, compress lever against right handle grip. To disengage. release lever. Traction Control (Fig. 13} — To achieve traction. lever must be compressed against left indie grip. To stop traction, release lever.
STARTING AND STOPPING INSTRUCTIONS TO START ENGINE: Note: {Model 521 only} If engine is operated when temperature is <40° higher, remove carburetor heater box (Fig. 15} However, the heater box must be reinstated when temperature falls below +40° remove heater box A.Remove fillips screws and hex head resew securing heater box in place. Pull choke knob off choke rod (Fig. 15) B. Lift heater box up and away from the engine. and reinstall choke knob on mounting pin Figure 15 5 thigh tension wie & Spark plug 5.
OPERATING INSTRUCTIONS 6. Discharge snow downwind whenever possible. and overlap each swath to assure complete snow removal. It wheels slip. shift into a lower gear which reduces forward speed 7. Normally, chains are not required: however, tire chains are recommended when the wheels spin excessively 8. In some snow and cold weather conditions, some controls and moving parts may freeze solid. Therefore. when any control becomes rand to operate, stop the engine: then check all parts tor freeze up.
CHANGING CRANKCASE OIL initially, change oil after the first 2 hours of engine operation; thereafter, change oil after every 25 hours of engine operation. If possible, run engine just before changing oil because warm oil tows beater and carries more contaminants than cold oif Note: Drain oit when fuel tank is empty to prevent spilling gasoline. 1. Ult high tension wire off spark plug and make sure wire does nol contact plug accidentally. 2.
MAINTENANCE Figure 21 1 Scraper 2 Mounting screws Note: Do not use step 3 if units to be used on smooth or hard surfaces. 3. Loosen four flange nuts (Fig. 20} securing both skids to auger side plates. Nexis, side skids down as far as possible so auger is as far trim level surface as skid adjustment allows, then tighten flange nuts Note: I 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/impetier pulley (Fig. 23) Figure 24 T Traction drive hat 2. Augeriimpeiter drive belt 4. Install new bat around tare auger/ impeller pulley {Fig. 24). Next, hoop belt over engine pulley. making sure that belt is on inside of idler pulley and wire belt guide (Fig. 24). 5. Install belt cover with two thread storming Screws REPLACING TRACTION DRIVE BELT When traction belt becomes worn, stretched, oil-soaked.
MAINTENANCE 2. Adjust upper lack nut (Fig. 26} unit there is approximately 6 inches (18 o} between the center of the handle and the tip of the traction contort lever {Fig. 27} Figure 27 1. Traction control! jeer 2 Approximately benches (15 cm) 3. Test run unit to check adjustment. (Wheels should spin when holding handiest. Repeat adjustment, i necessary, in 1/2 inch (13 mm) increments. ADJUSTING SPEED SELECTOR i there is slow or no ground speed in No. 1 speed selection.
MAINTENANCE REPLACING SPARK PLUG Correct spark plug to use is a Champion RJ17LM or Auto lite ARON. and correct air gap is 0.080 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. Pull high tension wire off spark plug and remove pig from cylinder head.
MAINTENANCE 4. Rotate prows adjusting screw (Fig. 32) clockwise turn at a time until engine misses because of & lean gasoline mixture. Then rotate screw counterclockwise — out — 1/8 turn ai a time until engine runs unevenly because of a rich gasoline mixture Next, rotate power adjusting screw clockwise. back fo the midpoint between the rich and dean setting so engine runs smoothly Note: Wait several seconds between each 178 turn setting so engine can adjust to the new fuel mixture 6.
MAINTENANCE RECORD Date Hours Used | Qi Change Lubrication Summer Storage Fat Service Spark Plug Gap UP-39244 19