MTD 65 Series - User Manual

Professional Shop Manual
61, 65 and 70 Series Vertical Shaft Engines
MTD Products Inc. - Product Training and Education Department
NOTE: These materials are for use by trained technicians who are experienced in the service and repair of outdoor power
equipment of the kind described in this publication, and are not intended for use by untrained or inexperienced individuals.
These materials are intended to provide supplemental information to assist the trained technician. Untrained or inexperi-
enced individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all
instructions and use common sense when working on power equipment. This includes the contents of the product’s Oper-
ators Manual, supplied with the equipment. No liability can be accepted for any inaccuracies or omission in this publication,
although care has been taken to make it as complete and accurate as possible at the time of publication. However, due to
the variety of outdoor power equipment and continuing product changes that occur over time, updates will be made to these
instructions from time to time. Therefore, it may be necessary to obtain the latest materials before servicing or repairing a
product. The company reserves the right to make changes at any time to this publication without prior notice and without
incurring an obligation to make such changes to previously published versions. Instructions, photographs and illustrations
used in this publication are for reference use only and may not depict actual model and component parts.
© Copyright 2013 MTD Products Inc. All Rights Reserved

MTD 65 Series Specifications

General

Brand	MTD
Model	65 Series
Category	Engine
Language	English

Summary

Chapter 1: Introduction

Safety

Crucial safety precautions for operating and servicing equipment.

Chapter 2: Basic Troubleshooting

Steps to troubleshooting

Outlines a systematic approach to diagnosing engine problems.

Define the problem

First step in troubleshooting to identify the exact issue.

Identify factors that could cause the problem

Analyzes potential causes for the defined engine problem.

Chapter 3: Air Intake System

Air filter

Details the function and types of air filters used in MTD engines.

Carburetor Insulator

Explains the function and replacement of the carburetor insulator.

Chapter 4: The Fuel System and Governor

Fuel Line

Describes the MTD GREENBAR™ fuel line and its inspection.

Inspecting the fuel

Procedures for checking fuel quality, water, dirt, and contamination.

The fuel filter

Details the location and servicing of the fuel filter.

Evaporative (EVAP) emissions system

Overview of EVAP systems and their components.

Chapter 5: Lubrication

Oil type and quantity

Specifies recommended oil type, viscosity, and capacity for MTD engines.

Lubrication system

Describes the splash lubrication system and its operation.

Chapter 6: Starter and Charging Systems

Recoil Starter Removal

Procedures for removing the recoil starter assembly from the engine.

Starter Rope

Step-by-step guide for replacing the starter rope on recoil assemblies.

Electric starter relay

Details the function and replacement of the electric starter relay.

Chapter 7: Ignition System

Troubleshooting the ignition system

Systematic steps to diagnose ignition system issues.

Troubleshooting the stop switch

Procedures for testing the engine stop switch functionality.

Spark plug removal

Detailed steps for removing and installing spark plugs.

Chapter 8: Exhaust

To remove;replace the conventional muffler

Steps for removing and installing standard mufflers.

Catalytic converter muffler

Explains the catalytic converter muffler and its components.

Chapter 9: Cylinder Head

To remove the cylinder head

Step-by-step instructions for removing the engine cylinder head.

Valves

Information on servicing and inspecting engine valves.

Chapter 10: Crankshaft, Piston and Connecting Rod

Crank shaft inspection

Procedures for inspecting the crankshaft for wear and damage.

Piston Inspection

Guidelines for inspecting pistons and piston rings.

Connecting rod inspection

How to inspect the connecting rod for cracks and wear.

Cylinder inspection

Steps for inspecting the cylinder bore and cross-hatch.

Reassembly

General steps for reassembling engine components.

Chapter 11: Failure Analysis

Abrasive Ingestion

Explains how abrasive particles cause engine damage.

Insufficient lubrication

Details the causes and symptoms of insufficient engine lubrication.

Engine Overspeed

Discusses the causes and consequences of engine overspeeding.

Mechanical Breakage; Wear

Covers engine failures due to part breakage, wear, or defects.