Single StageSnow ThrowerModels 521 & 721PRINTED IN U.S.A.Operator’s ManualFORM NO. 769-00309.fm(8/2002)IMPORTANT: Read safety rules and instructio
10SECTION 6: MAINTAINING YOUR SNOW THROWERReplacing Belt• Remove the belt cover by removing five hex screws. See Figure 12.Figure 12• Pull up on the
11SECTION 8: TROUBLESHOOTING GUIDENOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized servicerepresentative
12SECTION 9: PARTS LIST FOR MODELS 521 AND 7211592166216214201624141723382210132125607181111191255526272829303132333435363738394033414243444546474849
13Ref. No. Part No. Part Description1.684-0174 Upper Chute Crank Assemby2.684-0177 Lower Chute Crank Assembly3.684-0178 Bracket Assembly: Mitten Grip4
14Models 521 and 721Ref. No. Part No. Description1.629-0071 Extension Cord 2.710-0157 Hex Bolt 5/16-24 x 0.75”3.710-0409 Hex Bolt 5/16-24 x 1.75”4.71
15Models 521 and 721Ref. No. Part No. Description1.710-0487 Carriage Screw 5/16-18 x 2.0”2.710-1270 Machine Screw3.712-0324 Hex Lock Nut 1/4-204.720-
MANUFACTURER’S LIMITED WARRANTY FOR:The limited warranty set forth below is given by Troy-Bilt LLC with respect to new merchandise purchased and used
2TABLE OF CONTENTSContent PageImportant Safe Operation Practices ... 3A
3SECTION 1: IMPORTANT SAFE OPERATION PRACTICESDANGER: This machine was built to be operated according to the rules for safe operation in this manual.
44. Never operate with a missing or damaged discharge chute. Keep all safety devices in place and working.5. Never run an engine indoors or in a poorl
5SECTION 2: ASSEMBLING YOUR SNOW THROWERUnpacking From Carton• Cut along corners of the carton and lay it down flat. Remove packing material. • Remov
6handle. Hold the “Z” fitting with the pliers, not the cable, to avoid damaging the cable.NOTE: The upper hole in the control handle providesfor adjus
7Discharge Chute The angle of the discharge chute controls the distance that the snow is thrown. Tilt the discharge chute up for greater distance; til
8• If you have a grounded three-prong receptacle, proceed as follows. • Rotate choke lever to FULL position.• Connect power cord to switch box on dash
9SECTION 5: MAKING ADJUSTMENTSShave Plate • To check the adjustment of the shave plate, place the unit on a level surface. See Figure 8. The wheels,
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