Two Stage Snowthrower Drive Systems Manual
Contents
AUGER GEARBOX SERVICE . . . . . . . . . . . . . 1-1
GENERAL INFORMATION . . . . . . . . . . . . . . . . 1-1
AUGER GEARBOX LUBRICANT . . . . . . . . . . . 1-1
GEARBOX REMOVAL . . . . . . . . . . . . . . . . . . . 1-1
Primary Method — Minimum
Disassembly . . . . . . . . . . . . . . . . . . . . . . 1-2
Secondary Method — Traction and Auger
Housings Separated: Toro Models
38065 and 38080 . . . . . . . . . . . . . . . . . . 1-4
Secondary Method — Traction and
Auger Housings Separated:
All Other Models . . . . . . . . . . . . . . . . . . . 1-5
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
AUGER GEARBOX
DISASSEMBLY / SERVICE . . . . . . . . . . . . . . 1-7
Failure Analysis . . . . . . . . . . . . . . . . . . . . . 1-9
GEARBOX ASSEMBLY . . . . . . . . . . . . . . . . . . 1-9
BELTS, CONTROLS AND LINKAGES . . . . . . 2-1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . 2-1
REPLACING THE AUGER/IMPELLER
DRIVE BELT . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
REPLACING THE TRACTION BELT . . . . . . . . 2-2
Replacing the Traction Belt — Toro Models
38065, 38080, 38085 . . . . . . . . . . . . . . . 2-2
Replacing the Traction Belt —
Lawn-Boy Models 28230, 28231 and
Toro Models 38051, 38052, 38054, 38056,
38062, 38063, 38064, 38072, 38073 . . . 2-3
Replacing the Traction Belt —
Lawn-Boy Model 28232 and
Toro Models 38053, 38066,
38078, 38083, 38084, 38086 . . . . . . . . . 2-4
CONTROL AND LINKAGE ADJUSTMENT. . . . 2-7
Auger Control Adjustment —
Toro Models 38065, 38080, 38085 . . . . . 2-7
Install Auger Drive Control Rod . . . . . 2-7
Adjusting Auger/Impeller Drive Belt . . 2-7
Auger/Impeller Drive Control Linkage —
All Other Models . . . . . . . . . . . . . . . . . . . 2-8
ADJUSTING TRACTION CONTROL . . . . . . . . 2-9
Adjusting the Traction Control —
Toro Models 38065, 38080, 38085 . . . . . 2-9
Adjusting the Traction Control —
824XL (Toro Models 38066, 38078,
38083, 38084, 38086 and
Lawn-Boy Model 28232) . . . . . . . . . . . . . 2-10
ADJUSTING THE TRACTION ROD —
LAWN-BOY MODELS 28230, 28231 AND
TORO MODELS 38051, 38052, 38054,
38056, 38062, 38063, 38064 . . . . . . . . . . . . 2-11
ADJUSTING THE SPEED SELECTOR . . . . . 2-12
TRACTION DRIVE SYSTEMS . . . . . . . . . . . . 3-1
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . 3-1
TROUBLESHOOTING THE TRACTION
DRIVE — ALL MODELS. . . . . . . . . . . . . . . . 3-2
DISASSEMBLY — TORO MODELS 38065,
38080, 38085 . . . . . . . . . . . . . . . . . . . . . . . . 3-2
ASSEMBLY — TORO MODELS 38065,
38080, 38085 . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Preparation . . . . . . . . . . . . . . . . . . . . . . . 3-4
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
DISASSEMBLY — LAWN-BOY MODELS 28230,
23231 AND TORO MODELS 38051, 38052,
38054, 38056, 38062, 38063, 38064, 38072,
38073 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
ASSEMBLY — LAWN-BOY MODELS 28230,
23231 AND TORO MODELS 38051, 38052,
38054, 38056, 38062, 38063, 38064, 38072,
38073 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Assembly Tips . . . . . . . . . . . . . . . . . . . . . 3-10
Assembly Steps . . . . . . . . . . . . . . . . . . . . 3-10
DISASSEMBLY — TORO MODELS 38066,
38078, 38083, 38084, 38086 . . . . . . . . . . . . 3-14
ASSEMBLY — TORO MODELS 38066, 38078,
38083, 38084, 38086 . . . . . . . . . . . . . . . . . . 3-16
SUB ASSEMBLY REPAIR —
TORO MODELS 38066, 38078, 38083, 38084,
38086 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Traction Shaft/Friction
Wheel Disassembly. . . . . . . . . . . . . . . . 3-17
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Axle and Friction Plate Disassembly . . . . 3-18
Axle and Friction Plate Assembly . . . . . . 3-19
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