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See figure 18. A 9/16" socket wrench with extension is needed. 3. 4. Remove hand knob and cupped washer f om top of housing. Remove two self-tapping screws which \ old the belt guard. See figure 19. A 3/8" wronch is required. Lift off belt guard. FIGURE 19. 5. Slide belt off the impeller pulley. Slide housing and impeller off engine crankshaft. Be careful to not lose square key. See figure 20. Engine Crankshaft P.T.O.- Pulley FIGURE 20. Square Key 6. Slide impeller and blower housing assemblies off crankshaft. 7. Remove belt from P.T.O. pulley and install new belt. See figure 20. NOTE: When reassembling the new belt, the aid of another person will be helpful. 8. Turn the crankshaft until the keyway on shaft is directly on top. While holding housing assembly and impeller assembly, line up the keyway on the pulley with the key on the crankshaft, and slide housing and impeller assemblies onto crankshaft. 9. Secure impeller to crankshaft with hex bolt and lock washer, removed in step 2. Tighten securely. 10. Slip belt over impeller pulley. Reassemble the belt guard. 11. Secure blower housing with hand knob and washer. 12. Reassemble the nozzle or impeller guard. 8 OFF-SEASON STORAGE The following steps should be taken to prepare your vacuum for storage. 1. Clean and lubricate the vacuum thoroughly as described in the lubrication instructions. 2. Refer to engine manual for correct engine storage instructions. 3. If storing in an unventilated or metal storage shed, coat metal parts with a light oil or silicone to prevent rust. 4. Store in a dry, clean area. Do not store next to corrosive materials, such as fertilizer. OPTIONAL EQUIPMENT" Hose Attachment Kit Model 290-204-000 is available as optional equipment. See figure 21. Hose Attachment Kit FIGURE 21. TROUBLE SHOOTING PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION Engine fails to start 1. Fuel tank empty, or stale fuel. 2. Spark plug wire disconnected. 3. Faulty spark plug. 1. Fill tank with clean, fresh fuel. 2. Connect wire to spark plug. 3. Clean, adjust gap or replace. Loss of power; operation erratic 1. Spark plug wire loose. 2. Unit running on CHOKE. 3. Blocked fuel line (if so equipped) or stale fuel. 4. Water or dirt in fuel system. 5. Carburetor out of adjustment. 6. Dirty air cleaner. 1. Connect and tighten spark plug wire. 2. Move choke lever to OFF position. 3. Clean fuel line; fill tank with clean fresh gasoline. 4. Disconnect fuel line at carburetor to drain fuel tank. Refill with fresh fuel. 5. Adjust carburetor, f 6. Service air cleaner.t Engine overheats 1. Carburetor not adjusted properly. 2. Engine oil level low. 1. Adjust carburetor.f 2. Fill crankcase with proper oil. Too much vibration Loose parts or damaged crankshaft. Stop engine immediately and disconnect spark plug wire. Tighten all bolts and nuts. Make all necessary repairs. If vibration continues, have unit serviced by an authorized service dealer. Unit does not discharge 1. Directional discharge or nozzle clogged. 2. Foreign object or dirt lodged in air vane plate assembly. 3. Vacuum bag is full. 4. Belt worn and/or stretched. 1. Stop engine immediately and disconnect spark plug wire. Clean directional discharge or nozzle. 2. Stop engine immediately and disconnect spark plug wire. Remove lodged object or dirt. 3. Empty bag. 4. Replace belt. See maintenance section of this manual. fReferto the engine manual packed with your unit. NOTE: For repairs beyond the minor adjustments listed above, please contact your nearest authorized service dealer. 9 I Models 675, 685 and 689 NOTE: The engine is not under warranty by the vacuum manufacturer. . .If repairs or service is needed on the engine, please contact your nearest authorized engine service outlet. Check the “Yellow Pages” of your telephone book under Find It Fast In The Yellow Pages 10 Models 675, 685 and 689 PARTS LIST FOR MODELS 675, 685, 689, 243677 and 243687 POWER VACUUMS REF. NO. PART NO. CODE DESCRIPTION REF. NO. PART NO. CODE DESCRIPTION 1 05778B N Clutch Grip Ass’y t 46 748-0201 Spacer .63" I.D. x .88" O.D. x 2 711-0679 Clevis Pin .375" Dia. x 1,88"t .56" Lg.t 3 747-0154 Clutch Rod 32" Lg.f 47 14530 Side Plate 4 749-0787 Handle Brace (Painted) 48 715-0247 Spring Pin Spiral 3/16" Dia. x 749-0482 Handle Brace (Chrome) 1" Lg.t 5 — Part of Engine 49 748-0288 Drive Piniont 6 710-0892 Hex Wash. Hd. AB-Тар Scr. 50 710-0170 Hex Locking Bolt 5/16-24 x 1/4" x .62" Lg.f .62” Lg. 7 14558 Belt Guardf 51 736-0159 FI-Wash. .34" I.D. x .87" O.D. 8 714-0114 Square Key 1/4" x 2" Lg. 53 734-1035 Wheel Ass’y. Comp. 12" x 3“ 9 14536A Air Vane Plate Ass’y. (Incl. Ball Bearings) (675 and 677)f 734-1184 Wheel Ass’y. Comp. 10.5" x 4" 14557A Air Vane Plate Ass’y- w/Pulley (677 Only) 10 710-0442 Hex Bolt 5/16-18x1.5" Lg.* 741-0313 Bearings (677 Only) 11 754-0219 “V”-Beltf 54 750-0194 Spacer .63" I.D. x 1.0" O.D. x 12 736-0119 L-Wash. 5/16"...

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