McCulloch 32CC TRIMMER User Manual

Service Manual
IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY
PRINTED IN USA
FORM NO. 769-00942
This Service Manual is not a substitute for the Operator’s Manual. You must read, understand
and follow all of the directions in this manual as well as the Operator’s Manual before working
on this power equipment.
(10/2003)
32cc String Trimmer
Power Head
MCCULLOCH CORPORATION P.O. BOX 31567, TUCSON, AZ 85751-1567
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 inexperienced
individuals should seek the assistance of an experienced and trained professional. Read, understand, and follow all instructions
and common sense when working on power equipment. This includes the contents of the product’s Operators 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 2005 MTD Products Inc. All Rights Reserved
MTD Products LLC - Product Training and Education Department

McCulloch 32CC TRIMMER Specifications

General

Engine Displacement	32 cc
Power Output	0.9 kW
Cutting Width	43 cm
Engine Type	2-stroke
Shaft Type	Straight
Start System	Recoil

Summary

Introduction to McCulloch String Trimmers

Trimmer Head Operations

Trimmer Head Types and Line Loading

Details different McCulloch trimmer head models and the process for loading trimmer line.

Trimmer Head Assembly and Winding

Instructions for aligning spool, inserting line, winding, and testing the trimmer head.

Trimmer Head Maintenance and Inspection

Procedures for removing spool, inspecting components, and understanding ratchet wedge operation.

Recoil Starter Service Procedures

Disassembling Trigger and Grip Assembly

Steps to separate the powerhead from the boom and access the throttle cable connection.

Separating Powerhead and Housing Components

Disconnecting throttle cable and separating the trigger housing from the grip assembly.

Detaching Trigger Housing and Spark Plug Removal

Final trigger housing detachment, stop switch wire unplugging, and spark plug removal.

Clutch and Starter Housing Removal

Procedures for removing the clutch drum, clutch rotor, and starter housing.

Starter Housing and Pulley Removal

Disconnecting wires, managing cables, and removing the starter baffle and pulley.

Starter Spring and Pawl Inspection

Inspecting starter components, installing new rope, and checking flywheel pawls.

Flywheel and Crankshaft Component Removal

Steps for removing flywheel, nut, spacer, tube, and replacing damaged pawls.

Ignition Module and Starter Reassembly

Adjusting ignition air gap and reassembling the starter housing and clutch components.

Final Powerhead and Throttle Cable Connections

Connecting stop switch wires, securing clutch housing, and mounting powerhead to boom.

Exhaust System Service

Engine Cover and Muffler Removal

Steps to remove engine cover and related parts for muffler access and inspection.

Muffler and Spark Arrestor Maintenance

Removing engine cover screws, spark arrestor, and muffler for cleaning.

Exhaust System Reassembly and Testing

Installing muffler, covers, and performing a test run after exhaust service.

Fuel System Maintenance

Fuel Tank Vent and Primer Operation

Understanding fuel tank vent function and accessing the primer bulb assembly.

Fuel System Components and Maintenance

Air filter care, primer bulb maintenance, fuel tank access, and system inspection.