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740, 840 & 840G Snowblowers TABLE OF CONTENTS DESCRIPTION PAGE Warranty......................................................................1 Safety Instructions & Safety Sign Locations ................ 2 Operating Instructions.................................................. 3 Assembly Instructions.................................................. 5 Refilling #840G Gearbox.........
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740, 840 & 840G Snowblowers WARRANTY POLICY Buhler Manufacturing products are warranted for a period of twelve (12) months (90 days for commercial application) from original date of purchase, by original purchaser, to be free from defects in material and workmanship under correct, normal agricultural use and proper applications. Buhler Manufacturing’s obligations under this warranty shall be limited to the repair or
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740, 840 & 840G Snowblowers SNOWBLOWER This manual is for model #740 & #840 snowblowers with an open gear gearbox and for model #840G snowblower, which has a sealed oil bath gearbox. When ordering parts, specify model number and serial number. The snowblower is the push type and will mount to a tractor with a 540 rpm PTO. It is supplied with category 1 pins and also bushings, which convert the pins to a category 2. A
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740, 840 & 840G Snowblowers OPERATING INSTRUCTIONS 1. Do not operate the blower in the fully raised position. The three-point hitch on some tractors raises high enough to cause the PTO shaft to bind. This can cause damage to the PTO shaft and/or to the hitch and pins. NOTE: PTO shaft angle should not exceed 20 degrees for optimum performance and life. Damage may occur to PTO and/or Snowblower if angle becomes
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740, 840 & 840G Snowblowers OPERATING INSTRUCTIONS – cont’d. 9. Periodically check all bolts for tightness. The bolt holding on the fan and the bearing bolts are of particular importance. 10. Danger: Always stop blower for servicing or unplugging. The PTO should be disengaged before dismounting from the tractor. 11. CAUTION: Always check to see that both ends of the PTO shaft are securely attached as
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740, 840 & 840G Snowblowers ASSEMBLY INSTRUCTIONS 1. #740: Turn the bottom tube weldments (#9) as shown in drawing and slide them into the sleeve welded to the main body. #840 & #840G: Turn the bottom tubes (#93) as shown in drawing and slide them into the sleeve welded to the main body. ALL SIZES: The correct position for each individual tractor will be determined when mounting the snowblower on the tractor. Thes
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740, 840 & 840G Snowblowers ASSEMBLY INSTRUCTIONS – cont’d. 5. Hydraulic spout swivel: a) Mount the swivel arm (#60) onto the swivel pin welded to the back corner of the fan housing using a 1" I.D. washer (#29) and a 3/16" x 1 ½” cotter pin (#62). b) Wrap cable (#61) around spout and clamp to the ends of the swivel using 3/16" cable clamps (#17). c) With the swivel in extended position (i.e. cylinder fully ex
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740, 840 & 840G Snowblowers ASSEMBLY INSTRUCTIONS – cont’d. 8. PTO Shield: All snowblowers are supplied with a PTO shield. Bolt the shield (#74) to the hinges on the top of the gearbox on both the #740 and #840 snowblowers using ¼” x ½” hex bolts, lock washers and hex nuts. Insert a 3/16" cotter pin in the hole in the shield and in the hole at the bottom corner of the gearbox. Fold back the cotter pins to hold
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740, 840 & 840G Snowblowers REFILLING GEARBOX WITH OIL: #840G ONLY If the gearbox requires refilling with oil because of repairs to the gearbox, add oil to the level shown in the drawing. Check the level regularly using the plug in the lid. The correct level is even with the bottom of the plug. 8
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740, 840 & 840G Snowblowers 740 & 840 SNOWBLOWERS 9
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740, 840 & 840G Snowblowers 10
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740, 840 & 840G Snowblowers #840G SNOWBLOWER 11
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740, 840 & 840G Snowblowers 12
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740, 840 & 840G Snowblowers WHEN ORDERING PARTS Always give your dealer the Model, Color and Serial Number of your machine to assist him in ordering and obtaining the correct parts. Use the exploded view and tabular listing of the area of interest to exactly identify the required part. #740, #840, & #840G SNOWBLOWERS ITEM PART # DESCRIPTION 1 907241 Main Body (#740) 907235 Main Body (#840) 907240 Main Bo
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740, 840 & 840G Snowblowers 32 965816 Bevel Gear - 1 1/4'' Bore 33 965817 Bevel Gear - 1 1/2'' Bore 34 965818 1 1/4'' Bearing w/ Collar 35 961637 Bearing Retainer (Set) 36 86170 3/8'' x 1'' Hex Bolt (pl) 37 901940 5/16'' x 1 1/4'' Key (#740 & #840) 38 965413 Drive Shaft (#740), 1 1/4'' x 37 1/4'' 965402 Drive Shaft (#840), 1 1/4'' x 42 1/4'' 965403 Drive Shaft (#840G), 1 1/4'' x 34'' 39 936402 PTO Safety Chain 4
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740, 840 & 840G Snowblowers 71 960135 PTO Shield Spring 72 87553 1/2" x 1 3/4" Hex Bolt (pl) 73 900712 Skid Pin Weldment 74 965409 PTO Shield (#840G) 965410 PTO Shield (#740 & #840) 75 81523 1/4'' x 1/2'' Hex Bolt (pl) 76 81545 1/4'' Lock Washer (pl) 77 81544 1/4'' Hex Nut (pl) 78 812364 1/2'' Lock Nut (pl) 79 988999 3/8'' x 3/8'' Socket Set Screw 80 907221 Upper Hitch Tube Weldment 21'' Lg (Cat 1 & 2) 81 965646
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740, 840 & 840G Snowblowers 840G SNOWBLOWER GEARBOX MODEL #840 G SNOWBLOWER GEARBOX PARTS LIST Item # Part # Description BU50506 Gearbox Complete 1 BU50310 Gearbox Casting Only 2 BU500089-3 Pipe Plug 3 BU50457 Gearbox Cover 4 BU500167-1 Relief Valve 5 BU50458 Gearbox Gasket 6 BU50508 Cross Shaft 7 BU50502 Pinion Shaft 8 BU50329 Bevel Gear - 1 1/2'' Bore 9 BU50331 Bevel Gear - 1 3/8'' Bore 10 BU50428
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740, 840 & 840G Snowblowers #740, #840, #840G SNOWBLOWER PTO 17
