Husqvarna 42 Factory Service & Work Shop Manual
What's Included?
Lifetime Access
Fast Download Speeds
Online & Offline Access
Access PDF Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
42, 42D, 242
Workshop Manual
531 03 01-21
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Introduction
The procedures included in this workshop
manual are designed to provide you, the tech-
nician, with the necessary information for repair
and service of models 42, 42D and 242 chain
saws.
The information, specifications and illustrations
in this publication are based on the information
in effect at time of printing. Continued product
improvement may result in changes to these
saws that may not be included in this manual.
Later editions are revised to include any prod-
uct changes that may have occurred.
Safety Statements
The following safety statements are found
throughout this manual and are designed to
make you aware of potential hazards or unsafe
practices.
- WARNING -
Immediate hazards which can
result in severe injury or death.
CAUTION: Hazards or unsafe practices
which can result in severe personal injury.
IMPORTANT: Hazards or unsafe practices
which can result in product or property
damage.
NOTE: Additional pertinent information.
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Table of Contents
=
Page No.
Section
© Husqvarna Forest& Garden 1995
1
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Technical Specifications
Engine
Displacement -----------------------------------------------------------
Bore -----------------------------------------------------------------------
Stroke ---------------------------------------------------------------------
Maximum No Load RPM
Model 242 -----------------------------------------------------------
Model 42(D) ---------------------------------------------------------
Idling Speed -------------------------------------------------------------
Clutch Engagement Speed ------------------------------------------
Fuel and Chain Lubrication System
Carburetor ---------------------------------------------------------------
Fuel Tank Volume ------------------------------------------------------
Oil Pump Capacity -----------------------------------------------------
Oil Tank Volume --------------------------------------------------------
Ignition System
Ignition System ---------------------------------------------------------
Air Gap -------------------------------------------------------------------
Spark Plug ---------------------------------------------------------------
Electrode Gap -----------------------------------------------------------
Heated Handles
Model 242 ----------------------------------------------------------------
Model 42(D) -------------------------------------------------------------
Bar and Chain
Bar Length Minto Max -----------------------------------------------
Drive Sprocket ----------------------------------------------------------
Chain Speed
Model 242 -----------------------------------------------------------
Model 42(D) ---------------------------------------------------------
Chain Pitch --------------------------------------------------------------
Drive Link Gauge ------------------------------------------------------
Weight
Model 242 ----------------------------------------------------------------
Model 42(D) -------------------------------------------------------------
Weight with 13 inch Guide Bar and Chain
Model 242 ----------------------------------------------------------------
Model 42(D) -------------------------------------------------------------
42.0 cc (2.5 cu. in.)
42.0 mm
30.0 mm
15500rpm
13000 rpm
2900 rpm
3900 rpm
Walbro HDA 34
0.5 Iitres (1.1 pints)
3-7 cc/rein at 9000 rpm
0.27 Iitres (0.55 pints)
SEM AM7
0.3 mm (.012 inch)
NGK-BPMR6A
CHAMPION-RCJ7Y
0.5 mm (.02 inch)
65 watts at 10000 rpm
NA
13-18 inches (33 -46 cm)
7 tooth
19.7 m/secat9000 rpm
17.3 m/secat9000 rpm
0.325 inches
1.5 mm (.058 inches)
4.6 kg (10.1 Ibs)
4.5 kg (9.9 Ibs)
5.3 kg (1 1.7 Ibs)
5.2 kg (1 1.4 Ibs)
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Service Tools 2
5025006-01
5025026-01
5025030-07
5025033-01
5025038-01
5025067-01
5025070-01
5025079-01
5025082-01
5025083-01
5053818-17
5025134-02
5025149-01
5025161.01
50271 13-01
5027114-01
Assembling pliers, spark plug
Puller screw
Crankshaft installer
Piston stop
Pressure gauge
Wrench (11 mm)
Piston ring compressor
Seal Installer
Drift
Hook for fuel filter
Oil gear puller
Air gap gauge
Holding bar for flywheel puller
Crankcase puller
Test plug
Tachometer
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
3 Safety Equipment
Chain Brake
Disassembly
Disengage chain brake. Remove clutch cover
retaining nut and remove cover. Clean chain
brake and clutch cover assembly,
Remove hand guard retaining screw. Rethread
screw into pivot sleeve two turns. Press on
screw head to drive out inner pivot sleeve half.
Turn cover to opposite side. Using a suitable
punch, remove outer half of pivot sleeve.
Separate hand guard from cover.
4
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Safety Equipment
3
Remove screws (4) and cover plate.
– WARNING -
Wear eye protection when
removing spring to prevent
injury
Using a screwdriver, pry out brake spring.
Using a punch, drive out knee link retaining
pin.
5
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
3 Safety Equipment
Position punch in clutch cover as shown, and
drive out brake band roll pin. Remove brake
band and knee link assembly.
Check brake band for damage or wear. The
brake band thickness should not be less than
0.75 mm (.030”) when measured at any point
along the band.
The brake band must be replaced if the band is
damaged or worn less than minimum thick-
ness. If brake band requires replacement,
remove screw and replace band.
6
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
Safety Equipment
3
Apply a thin coating of oil to brake mechanism
parts. Position brake band and knee link in
cover.
Install knee link assembly and roll pins. Install
spring on knee link mechanism.
- WARNING -
Wear eye protection when
installing spring to prevent
injury
With screwdriver positioned as shown, press
spring into place.
I
7
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
3 Safety Equipment
Install cover plate and secure with (4) screws.
Position hand guard on clutch cover. Press
pivot sleeve halves into place.
Install and tighten screw. Disengage chain
8
For Husqvarna Parts Call 606-678-9623 or 606-561-4983
www.mymowerparts.com
You're Reading a Preview
What's Included?
Lifetime Access
Fast Download Speeds
Online & Offline Access
Access PDF Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$39.99
Viewed 61 Times Today
Secure transaction
What's Included?
Lifetime Access
Fast Download Speeds
Online & Offline Access
Access PDF Contents & Bookmarks
Full Search Facility
Print one or all pages of your manual
$39.99
Upon purchasing this manual, you will receive a .PDF file containing an email contact. After contacting us, you will receive a reply with a link to access the manual for your Husqvarna 42.
This comprehensive manual covers every aspect of your machine, providing detailed information on every nut and bolt. With hundreds of pages, it offers guidance on identifying and resolving various issues, from simple tasks like an oil change to more complex procedures like a transmission swap. The manual includes numerous illustrations to assist you and features easy-to-understand text throughout.
Utilize the search function to navigate the manual efficiently and print the necessary pages as needed. This Factory Service Repair Manual is designed to walk you through the fundamentals of maintenance and repair, providing a step-by-step approach to equip you with the knowledge mastered by factory-trained technicians.
By leveraging the insights from this service repair manual, any owner can confidently make informed decisions regarding the maintenance and repair of their machine.
Rest assured, in addition to the high-quality service manual, we are committed to delivering excellent customer service, ensuring your satisfaction.
