Service Guide - Compact Series Sno-Thro - Models 920025-920328

Oct 28, 2026

Upload by adawds

Service Guide for the Compact Series Sno-Thro snow thrower, covering safety practices and laws plus detailed service procedures. The manual lists operator training requirements, safety alert symbols, signal words, and safety decal locations and descriptions. It provides step-by-step maintenance for emission control systems and extensive drivetrain and auger-related component replacement, including belt replacement, idler assemblies and arms, brakes, friction discs, bearings, swing gates, augers, impellers, gearcases, engines, and multiple track-drive and chassis parts, with instructions for removal and reinstallation across supported models.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages60

Reading Time2 h 31 min

AccessFree to download

Practices & Laws

Emission Control System

Required Operator Training

Safety Alert Symbol

Signal Words

Safety Decals

Safety Rules

Component Service Procedures

Draining Fuel System

Service Position

Separate Housing From Frame

Attachment Drive Belt Replacement

Traction Drive Belt Replacement

Drive Idler Assembly Replacement

Traction Drive Idler Arm Replacement

Attachment Brake Replacement

Friction Disc Replacement

Hex Shaft Bearing Replacement

Swing Gate Replacement

Auger Replacement

Impeller Replacement

Auger Gearcase Replacement

Engine Replacement

Traction Drive Clutch Cable Replacement

Axle Bushing Replacement

Dual-Handle Interlock Cam Replacement

Chute Gear Replacement

Scraper Blade Replacement

Headlight Replacement

Gearcase Rebuild

Track Drive Wheel Replacement

Track Replacement

Bogie Wheel Replacement

Axle Bearing Replacement (Track Models)

Welcome

Service Guide Compact Series Sno-Thro® Models 920025 – Compact Classic 24 (SN 000101 +) 920026 – Compact 20 (SN 000101 +) 920027 – Compact 24 (SN 000101 +) 920028 – Compact 24 Track (SN 000101 +) 920317 – Compact 22 CE (SN 250000 +) 920318 – Compact 24 Track CE (SN 250000 +) 920321 – Compact 24 CE (SN 250000 +) 920328 – Compact Classic 24 CE (SN 000101 +) ENGLISH 05135330A • 7/18 TABLE OF CONTENTS PRACTICES & LAWS...................... 2 EMISSION CONTROL SYSTEM.............. 2 REQUIRED OPERATOR TRAINING .......... 2 SAFETY ALERT SYMBOL .................. 2 SIGNAL WORDS ......................... 2 SAFETY DECALS......................... 3 Safety Decal Locations .......................... 3 Safety Decal Descriptions ....................... 3 SAFETY RULES .......................... 4 DRAINING FUEL SYSTEM.................. 7 SERVICE POSITION....................... 7 SEPARATE HOUSING FROM FRAME ........ 7 Remove Auger Housing ......................... 7 Reinstall Auger Housing ......................... 9 BOTTOM COVER REMOVAL ............... 11 Install Bottom Cover ............................ 11 ATTACHMENT DRIVE BELT REPLACEMENT .. 12 Remove Attachment Drive Belt ................... 12 Install Attachment Drive Belt ..................... 12 TRACTION DRIVE BELT REPLACEMENT ..... 12 Remove Traction Drive Belt ...................... 12 Install Traction Drive Belt ........................ 13 DRIVE IDLER ASSEMBLY REPLACEMENT.... 15 Remove Attachment Drive Idler Assembly ........... 15 Install Attachment Drive Idler Assembly ............. 15 TRACTION DRIVE IDLER ARM REPLACEMENT ......................... 17 Remove Traction Drive Idler Arm .................. 17 Install Traction Drive Idler Arm .................... 17 ATTACHMENT BRAKE REPLACEMENT ...... 18 Remove Attachment Brake ....................... 18 Install Attachment Brake ......................... 18 FRICTION DISC REPLACEMENT ............ 19 Remove Friction Disc ........................... 19 Install Friction Disc ............................. 21 HEX SHAFT BEARING REPLACEMENT ...... 22 Remove Bearing ............................... 22 Install Bearing ................................. 22 SWING GATE REPLACEMENT .............. 23 Remove Swing Gate............................ 23 Install Swing Gate.............................. 23 AUGER REPLACEMENT ................... 25 Remove Auger ................................ 25 Install Auger .................................. 26 IMPELLER REPLACEMENT ................. 27 Remove Impeller .............................. 27 Install Impeller ................................ 28 AUGER GEARCASE REPLACEMENT......... 29 Remove Gearcase Assembly..................... 29 Install Gearcase Assembly....................... 29 ENGINE REPLACEMENT ................... 29 Remove Engine ............................... 29 Install Engine ................................. 30 TRACTION DRIVE CLUTCH CABLE REPLACEMENT .......................... 32 Remove Cable ................................ 32 Install Traction Drive Cable ...................... 33 AXLE BUSHING REPLACEMENT ............ 33 Remove Axle Bushing .......................... 33 Install Axle Bushing ............................ 34 DUAL-HANDLE INTERLOCK CAM REPLACEMENT .......................... 35 Remove Interlock Cam.......................... 35 Install Interlock Cams ........................... 35 CHUTE GEAR REPLACEMENT .............. 36 Remove Pinion Gear ........................... 36 Install Pinion Gear ............................. 37 Remove Chute Rotation Gear .................... 37 Install Chute Rotation Gear ...................... 38 SCRAPER BLADE REPLACEMENT .......... 39 Remove Scraper Blade ......................... 39 Install Scraper Blade ........................... 39 HEADLIGHT REPLACEMENT ............... 39 Remove Bulb ...................

FAQs

What documents should be read before operating or servicing the Sno-Thro unit?

Read the Operator’s Manual and the engine manual provided with the unit at time of purchase. They contain important safety instructions and information about unit controls.

Why are genuine Ariens replacement parts recommended?

Ariens recommends using only genuine parts because unauthorized parts may adversely affect performance, durability, or safety and may void the warranty depending on how unauthorized parts are installed and used.

Which areas of maintenance are covered by this Service Guide?

The guide covers safety practices and laws, emission control system basics, and many service procedures including belts, idlers, brakes, friction discs, bearings, auger and impeller components, gearcase/engine replacement, and track-drive parts.

Oct 28, 2026

Upload by adawds