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Tecumseh OHSK70 User Manual

Tecumseh OHSK70
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Basic
Troubleshooting and
Service Information
TECUMSEH
another free manual from www.searstractormanuals.com
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Tecumseh OHSK70 Specifications

General IconGeneral
Fuel TypeGasoline
Cooling MethodAir-cooled
Starting SystemRecoil
Shaft OrientationHorizontal
Governor TypeMechanical
Power Output7.0 hp
Oil Capacity0.6 L (0.63 US qt)
Shaft Size1 inch (25.4 mm)
Engine Type4-stroke, OHV (Overhead Valve)

Summary

Important Notices and Definitions

Safety Definitions

Definitions of warning and note indicators used in the manual.

Emission Notice

Information on engine emission compliance and systems.

Tecumseh Contact Information

Contact details for engine adjustments, repairs, or warranty service.

General Safety Precautions

Carbon Monoxide Poisoning Prevention

Precautions to prevent injury or death from carbon monoxide poisoning.

Gasoline Fire Prevention

Instructions to prevent injury or death from gasoline fires.

Adult Supervision Recommendations

Recommendations for safe operation, refueling, and maintenance by adults.

Rotating Parts Safety

Warning to stay clear of rotating engine parts.

General Information

Model Numbering System (Pre-2004)

Explanation of engine model identification for models produced before 2004.

Current Engine Model Numbering System

Reading the Engine ID Label

Guidance on interpreting information found on the engine identification label.

Engine Model Number Identification

Current Code (Effective 2004)

Explanation of the current engine model numbering system effective 2004.

Pre-2004 Model Number Conversion

Chart for converting specification numbers to model numbers for older engines.

Spark Plug Replacement Guide

4-Cycle Engine Spark Plugs

Service numbers and cross-references for 4-cycle engine spark plugs.

2-Cycle Engine Spark Plugs

Service numbers for 2-cycle engine spark plugs.

Europa Models Spark Plugs

Spark plug information for Europa model engines.

Fuel Recommendations

Gasoline Usage Guidelines

Guidelines for using unleaded regular gasoline and acceptable alternatives.

Specialty Fuel Considerations

Information on using specialty fuels and Reid Vapor Pressure (RVP).

Short Term Engine Storage

Instructions for preparing engines for short-term storage.

Fuel Recommendations - Storage and Additives

Extended Storage Procedures

Procedures for preparing engines for extended storage, including fuel draining.

Fuel Additive Usage

Recommendations for using fuel additives and stabilizers.

4-Cycle Engine Lubrication Requirements

Recommended Oil Usage Chart

Guidance on oil types and viscosities based on temperature.

4-Cycle Engine Oil (Pre-2004 Models)

Engine oil capacities for models produced before 2004.

4-Cycle Engine Oil (2004+ Models)

Engine oil capacities for models produced from 2004 onwards.

Europa Models Lubrication Details

Oil capacities for Europa model engines.

Four Cycle Troubleshooting

Troubleshooting Preparation

Steps to take before troubleshooting engine problems.

Fuel System Troubleshooting

Troubleshooting steps for engines that will not start, focusing on the fuel system.

Four Cycle Troubleshooting - Ignition System

Ignition System Troubleshooting

Troubleshooting steps for engines that will not start, focusing on the ignition system.

2-Cycle Engine Oil Requirements

Fuel/Oil Mix Ratios

Recommended fuel and oil mix ratios for various 2-cycle engines.

2-Cycle Oil with Stabilizer

Details on 2-cycle engine oil with stabilizer and its benefits.

Two Cycle Troubleshooting

Troubleshooting Preparation

Steps to take before troubleshooting 2-cycle engine problems.

Fuel System Troubleshooting

Troubleshooting steps for 2-cycle engines that will not start, focusing on the fuel system.

Two Cycle Troubleshooting - Ignition System

Ignition System Troubleshooting

Troubleshooting steps for 2-cycle engines that will not start, focusing on the ignition system.

Specification to Model Number Cross Reference

Vertical 4-Cycle Engines

Chart to find engine model numbers using specification numbers for vertical 4-cycle engines.

Specification to Model Number Cross Reference - Continued

Horizontal 4-Cycle Engines

Chart to find engine model numbers using specification numbers for horizontal 4-cycle engines.

Vertical 2-Cycle Engines

Chart to find engine model numbers using specification numbers for vertical 2-cycle engines.

Horizontal 2-Cycle Engines

Chart to find engine model numbers using specification numbers for horizontal 2-cycle engines.

Transmission and Gear Product Identification

Transmission and Gear Product Identification Styles

Basic Gear Drive Troubleshooting

Troubleshooting Preparation

Steps to take before troubleshooting gear drive systems.

Hard Shifting Issues

Troubleshooting tips for hard shifting issues in transaxles and drive belts.

Basic Gear Drive Troubleshooting - Unit Slip

Unit Slippage Issues

Troubleshooting steps when the unit appears to slip.

Transmission, Transaxle, and Gear Product Details

LTH-2000 Series Transaxle Troubleshooting

Troubleshooting guide for LTH-2000 series hydrostatic transaxles.

LTH-2000 Series Transaxle Troubleshooting

Noisy Unit Diagnosis

Troubleshooting steps for noisy transaxle units.

Unit Does Not Drive

Troubleshooting steps when the unit does not drive.

Brake Malfunction Diagnosis

Troubleshooting steps when the brake system is not functional.

Lubricant Leak Diagnosis

Troubleshooting steps for lubricant leaks in the transaxle.

1800 / VST Troubleshooting

Tecumseh and Peerless Lubrication Requirements

Repair Manuals Listing

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