Husqvarna 545 Mark II User Manual

Husqvarna 545 Mark II

44 pages

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545 Mark II, 545G Mark II, 550XP

®

Mark II, 550XP

®

G Mark

II, 550XP Mark II TrioBrake, 550XPG Mark II TrioBrake

EN Operator's manual 2-40

Table of Contents

Other manuals for Husqvarna 545 Mark II

Workshop Manual76 pages

Questions and Answers:

R
Robert YangAug 20, 2025
Why does my Husqvarna 545 Mark II Chainsaw engine start then stop?
- D
  dustinwilsonAug 21, 2025
  Your Husqvarna Chainsaw engine may start and then stop due to several reasons. It could be due to incorrect fuel type, in which case you should drain the fuel tank and fill it with the correct fuel. Another possible cause is a clogged air filter, so you should clean or replace the air filter. Also, a clogged fuel filter could be the reason, so replace the fuel filter to resolve this.
V
Victoria DuncanAug 22, 2025
What to do if my Husqvarna 545 Mark II engine does not start?
- P
  Patricia EllisonAug 22, 2025
  If your Husqvarna Chainsaw engine does not start, several factors could be the cause. The starter pawls may be blocked, requiring adjustment or replacement. Ensure the fuel type is correct by draining the tank and refilling it. Check the spark plug; it should be clean and dry. Also, make sure that the electrode gap is correct and that the spark plug is tightened. If the engine is flooded due to repeated starts with full choke, remove and clean the spark plug, lay the chainsaw on its side with the spark plug hole facing away from you, pull the starter rope handle 6-8 times, then reassemble the spark plug and attempt to start the chainsaw.
N
Nicole WhiteAug 25, 2025
Why does my Husqvarna 545 Mark II engine not start?
- B
  Brian ShepherdAug 25, 2025
  If your Husqvarna Chainsaw engine doesn't start, it might be due to several reasons. You may have used the incorrect fuel type, in which case you should drain the fuel tank and refill it with the correct fuel. The spark plug could be dirty or wet; ensure it is clean and dry. Also, check if the spark plug is loose and tighten it if necessary. If the engine is flooded due to repeated starts with full choke, remove and clean the spark plug, lay the chainsaw on its side with the spark plug hole facing away from you, and pull the starter rope 6-8 times. Then, reassemble the spark plug and attempt to start the chainsaw.
N
njohnstonAug 26, 2025
How to fix a Husqvarna Chainsaw when the engine does not start because of blocked starter pawls?
- S
  Sarah ArcherAug 26, 2025
  If the engine of your Husqvarna Chainsaw does not start, the starter pawls might be blocked. Try adjusting or replacing the starter pawls. Also, ensure the area around the pawls is clean. For further assistance, it's recommended to speak with an approved service workshop.
G
Gary CarterAug 27, 2025
Why Husqvarna 545 Mark II engine does not start?
- M
  Matthew BoydAug 27, 2025
  If your Husqvarna Chainsaw engine won't start, several factors could be at play. First, ensure you're using the correct fuel type; if not, drain the tank and refill. A dirty or wet spark plug can also prevent ignition, so clean and dry it. A loose spark plug should be tightened. An incorrect electrode gap requires using the recommended spark plug type, consulting the technical data for the correct gap. If the engine is flooded from repeated choke use, remove and clean the spark plug, lay the chainsaw on its side with the spark plug hole facing away, pull the starter rope 6-8 times, then reassemble the spark plug and try starting again. Also, check if the starter pawls are blocked; if so, adjust or clean around them, or consider replacing them.
B
bennettalanAug 29, 2025
What to do if Husqvarna 545 Mark II Chainsaw starts but stops again?
- L
  Larry HigginsAug 29, 2025
  If your Husqvarna Chainsaw starts but then stops, the issue could stem from several causes. Ensure you are using the correct fuel type; if not, drain the tank and replenish with the appropriate fuel. A clogged air filter can also cause this problem, so clean or replace it. Similarly, a clogged fuel filter should be replaced. If the idle speed is incorrect, you should consult your servicing dealer.
R
Robert BaileyAug 31, 2025
What to do if my Husqvarna 545 Mark II engine starts but stops again?
- M
  Michael HowardAug 31, 2025
  If your Husqvarna Chainsaw engine starts and then stops, several factors could be responsible. The fuel tank may contain incorrect fuel; drain the fuel tank and fill with the correct fuel. The air filter may be dirty; clean or replace the air filter. The fuel filter may need replacing; replace the fuel filter.
M
Mason HumphreySep 2, 2025
How to fix a loose spark plug on a Husqvarna Chainsaw?
- W
  Wesley CunninghamSep 2, 2025
  If the spark plug on your Husqvarna Chainsaw is loose, tighten the spark plug.
J
James EvansSep 3, 2025
What to do if my Husqvarna 545 Mark II starts but stops again?
- A
  Alejandro LeeSep 3, 2025
  If your Husqvarna Chainsaw starts and then stops, the issue might be related to the fuel or air supply. Make sure you're using the correct fuel type; if not, drain the tank and refill with the correct fuel. A clogged air filter could also be the culprit; try cleaning or replacing it. Similarly, a clogged fuel filter can cause this problem, so replace the fuel filter.
J
Joseph HoffmanSep 5, 2025
Why does my Husqvarna Chainsaw engine start but stops again?
- E
  edwardstoutSep 5, 2025
  If your Husqvarna Chainsaw engine starts but then stops, the fuel tank might contain incorrect fuel. In this case, drain the fuel tank and refill it with the correct fuel. Other potential solutions include cleaning or replacing the air filter and replacing the fuel filter. If the idle speed is not correct, consult your servicing dealer.

Husqvarna 545 Mark II Specifications

General

Engine Power	2.7 kW
Cylinder Displacement	50.1 cm³
Maximum Power Speed	9900 rpm
Oil Tank Volume	0.26 l
Weight (excl. cutting equipment)	5.3 kg
Sound Power Level	116 dB(A)
Chain Pitch	0.325"
Recommended Bar Length, Min-Max	13"-20"
Chain Gauge	0.050 inches
Fuel Tank Volume	0.52 liters

Summary

Comprehensive Safety Guidelines

Safety Definitions and Warnings

Explains the meaning of warning, caution, and note indicators.

General Operating Safety Instructions

Fundamental safety rules for handling and operating the chainsaw.

Specific Safety Instructions for Operation

Detailed safety protocols to follow during chainsaw use.

Personal Protective Equipment (PPE)

Essential PPE for Operation

Details required protective gear like helmets, hearing, and eye protection.

Additional Safety Gear Recommendations

Mentions gloves, pants, boots, and the importance of a first-aid kit.

Safety Devices on the Product

Checking Product Safety Devices

Emphasizes regular checks and maintenance of the product's safety features.

Product Safety and Control Features

Chain Brake Systems Explained

Details front hand guard and rear brake trigger operations for chain stopping.

Engine Controls and Fuel Safety

Muffler Function and Safety Precautions

Details on muffler heat, noise reduction, and fire risk.

Refueling Safety Guidelines

Critical precautions for safe refueling to prevent fire and injury.

Maintenance and Cutting Safety

General Maintenance Safety Instructions

Safety rules to follow when performing product maintenance.

Cutting Equipment Safety Guidelines

Safety precautions for using guide bars, saw chains, and filing equipment.

Assembly and Pre-Operation Checks

Guide Bar and Saw Chain Assembly

Step-by-step instructions for attaching the guide bar and saw chain.

Pre-Operation Function Checks

Essential checks to ensure the product is safe and ready for use.

Fueling and Fuel Mixing Procedures

Correct Fuel Types and Recommendations

Specifies the correct gasoline and two-stroke oil for engine performance.

Mixing Gasoline and Two-Stroke Oil

Detailed instructions and ratios for preparing the correct fuel mixture.

Fuel Tank and Chain Oil Management

Fuel Tank Filling Procedure

Safe and correct steps for filling the fuel tank.

Chain Oil Usage and Selection

Guidance on choosing and using the appropriate chain oil.

Understanding and Preventing Kickback

Kickback Causes and Prevention Methods

Explains what kickback is and how to avoid it to ensure safety.

Tree Felling and Safety Zone Management

Tree Felling Technique Guidance

Instructions and experience requirements for safely felling a tree.

Maintaining a Safe Distance During Felling

Felling Direction and Site Preparation

Calculating the Optimal Felling Direction

Factors influencing the safe and effective direction for felling a tree.

Clearing Work Area and Retreat Path

Felling Hinge and Cutting Precision

Creating the Critical Felling Hinge

Importance and techniques for making the correct felling hinge.

Directional Cuts and Safe Corner Method

Cutting Tensioned Trees and Branches

Safely Releasing Tension in Trees/Branches

Procedures for cutting trees and branches under tension.

Troubleshooting Engine Issues

Engine Fails to Start Diagnosis

Common causes and solutions for engine starting problems.

Engine Stops After Starting Diagnosis

Diagnosing and fixing issues where the engine stops unexpectedly.

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