Service Manual

ManualsBrandsToro ManualsGas Snow BlowersPower Clear 721 R-C 21 in. 212 cc Commercial Single-Stage Self Propelled Gas Snow Blower

Table Of Contents

Revision History
Preface
- Service Procedure Icons
Chapter 1 : Safety
- Safety Instructions
  - Think Safety First
Chapter 2 : Specifications and Maintenance
- Specifications
- Torque Specifications
  - Equivalents and Conversions
  - U.S. to Metric Conversions
Chapter 3 : Troubleshooting
- General Troubleshooting
- Engine Model/Serial Number Location
Chapter 4 : Starter System
- General Information
- Service and Repairs
  - Recoil Replacement
Chapter 5 : Fuel System
- General Information
- Service and Repairs
Chapter 6 : Governor Controls
- General Information
- Service and Repairs
  - Speed Control Assembly Replacement (G210–1, G210–2, & G210–4)
  - Governor Arm Replacement (G210–1, G210–2, & G210–4)
Chapter 7 : Compression System
- General Information
- Service and Repairs
  - Cylinder Head Replacement (G210–1, G210–2, & G210–4)
  - Piston and Connecting Rod Replacement
Chapter 8 : Electrical
- General Information
- Service and Repairs
Chapter 9 : Engine Lower End
- General Information
- Service and Repairs

G210–1ValveSeatReconditioning

1.Usinga45–46ºcutter,removeenoughmaterialtoproduceasmooth,

concentricseat.Followthevalveseatcuttermanufacturer’sinstructions.

Note:Alwaysturnthecutterclockwise.Continuetoturnthecutterwhile

liftingfromthevalveseat.

g338833

Figure150

2.Using30–32ºand60ºcutter,narrowandadjustthevalveseat.Thevalve

shouldcontactthemiddleofthevalveface.Ensurethewidthofthenished

valveistospecication.

Standard:0.8mm(0.0315inch)

ServiceLimit:2.0mm(0.0787inch)

3.Afterresurfacingtheseats,inspectforevenvalveseating.G210–1Valve

FaceContactT est(page7–12)

4.Replacethevalvesetifnotmakingfullcontact.

5.Repeattheprocedureonothervalveseat.

G210–1ValveLapping

1.Performvalvelappingifanyofthefollowingwereperformed:

•Newvalve

•Regroundvalve

•Valveseatwasreconditioned

2.Usingahandvalve-lappingtool,attachthesuctioncuptotheendofthevalve.

CompressionSystem:ServiceandRepairs

Page7–14

G210EngineServiceManual

3439-732RevA