This Workshop Service Repair Manual provides comprehensive information for the Yanmar SD20, SD30, and SD31 sail drive units. These marine sail drive units are designed for propulsion with marine diesel engines, specifically the GMC SERIES and 3HMC series. Yanmar is recognized for its engineering quality and reliability, and these sail drive units are integral components for efficient marine propulsion. This manual is intended to assist users in understanding and maintaining these essential marine systems.
The purpose of this manual is to guide owners and technicians through all necessary maintenance and repair procedures for the Yanmar SD20, SD30, and SD31 sail drive units. It covers a wide range of topics including disassembly, reassembly, gear backlash adjustment, bearing oil seal replacement, and technical information on tightening torques for nuts and bolts. Additionally, electrical wiring diagrams and optional modifications are detailed. By following the guidance within this manual, users can prevent premature failure, reduce unnecessary repairs, and ensure the longevity and optimal performance of their Yanmar sail drive units.
This Service Manual covers the Models SD20 , 30 , 31 sail drive unit only.
For service information on the GMC SERIES & 3HMC marine diesel engine which drives it,please refer to the respective GM/HM Series Manuals.
This manual can be used by anyone from a first time owner/amateur to a professional technician.Easy to read type,And give you all the information needed to do the procedure correctly.
Keep this shop manual handy and use it often. Performing routine,preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs.
Manual Contents:
General
Dissassenbly
Reassembly
Adjustment (Gear Blcklash Adjustment)
Bearing Oil Seal Replacement
Tightening Torques For Nuts And Bolts
Electrical Wiring
Modifying The Ling-Reach unit (Optional Parts)
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
This Service Manual covers the Models SD20 , 30 , 31 sail drive unit only.
For service information on the GMC SERIES & 3HMC marine diesel engine which drives it,please refer to the respective GM/HM Series Manuals.
This manual can be used by anyone from a first time owner/amateur to a professional technician.Easy to read type,And give you all the information needed to do the procedure correctly.
Keep this shop manual handy and use it often. Performing routine,preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs.
Manual Contents:
General
Dissassenbly
Reassembly
Adjustment (Gear Blcklash Adjustment)
Bearing Oil Seal Replacement
Tightening Torques For Nuts And Bolts
Electrical Wiring
Modifying The Ling-Reach unit (Optional Parts)
File Format: PDF
Compatible: All Versions of Windows & Mac
Language: English
Requirements: Adobe PDF Reader
