MTD P61 Series User Manual

Professional Shop Manual
P61/P65/P70 Series Vertical Shaft Engines
Second edition
MTD Products Inc - Product Training and Education Department
FORM NUMBER - 769-03354A
08/2008
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 2008 MTD Products Inc. All Rights Reserved
www.mymowerparts.com
For Discount White Outdoor Parts Call 606-678-9623 or 606-561-4983

MTD P61 Series Specifications

General

Brand	MTD
Model	P61 Series
Category	Engine
Language	English

Summary

MTD Engine Introduction, Maintenance, and Specifications

Manual Overview and Fastener Guidelines

Details manual purpose, fastener usage, and assembly specifications.

Routine Engine Maintenance Procedures

Covers spark plugs, air filters, oil, fuel, and valve lash adjustments.

MTD Engine Troubleshooting and Diagnostics

Troubleshooting Methodology and Problem Identification

Outlines systematic troubleshooting steps and defines common engine problems.

Diagnostic Tests and Repair Procedures

Covers prime tests, leak-down, compression tests, PCV testing, and repair execution.

MTD Engine Air Intake, Filter, and Carburetor Service

Air Filter and Housing Service

Covers air filter types, replacement, and air filter housing removal.

Carburetor Insulator Installation

Details the removal and installation of the carburetor insulator.

MTD Engine Fuel System, Governor, and Carburetor Service

Fuel System Components and Maintenance

Covers fuel inspection, testing, filters, tank, EVAP, choke, primer, and carburetor.

Governor System Operation and Service

Explains governor function and provides steps for arm, shaft, and gear service.

MTD Engine Lubrication, Oil, and PCV System Service

Oil Specifications, Checking, and Changing

Specifies oil requirements, checking level, and dipstick tube service.

Lubrication System and PCV Service

Details the splash lubrication system and PCV system maintenance.

MTD Engine Starter System Service

Recoil Starter Assembly and Components Service

Covers removal of recoil assembly, starter cup, rope, pulley, and spring.

Electric Starter System Service and Testing

Details electric starter relay testing, removal, installation, and schematic.

MTD Engine Ignition System Service and Flywheel

Ignition System Troubleshooting and Stop Switch Test

Guides on diagnosing ignition issues, testing spark, and the stop switch.

Ignition Module, Engine Brake, and Flywheel Service

Covers module installation, air gap, engine brake, and flywheel procedures.

MTD Engine Exhaust System Service

Muffler Service and Catalytic Converter Function

Covers muffler removal, installation, and catalytic converter operation.

Air Injector System Service

Details the service and replacement procedures for the air injector components.

MTD Engine Cylinder Head and Valve Service

Cylinder Head Removal and Gasket Replacement

Step-by-step guide for removing the cylinder head and replacing the gasket.

Valve Inspection and Servicing

Covers valve inspection, seat/stem checks, and leak testing.

MTD Engine Internal Component Service and Specifications

Engine Disassembly, Inspection, and Reassembly

Covers disassembly of internal parts, inspection, and reassembly procedures.

Engine Specifications and Torque Values

Provides detailed engine specifications and torque values for fasteners.

MTD Engine Failure Analysis and Causes

Analysis of Abrasive Ingestion and Lubrication Failures

Explains causes and symptoms of abrasive ingestion and insufficient lubrication.

Analysis of Overspeed, Overheating, and Mechanical Failures

Covers failures from overspeed, overheating, mechanical breakage, and detonation.