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545RXT AT
Husqvarna 545RXT AT User Manual
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W
orkshop manual
English
545RXT A
T
, 545FX A
T
, 545FXT A
T
,
545FX, 545FXT
, 545R
X, 545RXT
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction and Safety Instructions
4
General
4
Revisions
4
Target Group
4
Safety Instructions
4
Structure
5
Numbering
5
Tools
5
Symbols on the Product
5
2 Technical Data
6
3 Service Tools
8
4 Service Data
10
5 Handle System
14
Dismantling the Stop Switch
14
Cleaning and Inspection
14
Assembling the Stop Switch
14
Dismantling the Throttle (Finger)
14
Dismantling the Throttle (Thumb)
14
Assembling the Finger Throttle
16
Assembling the Thumb Throttle
16
Replacing the Heating Elements in the Handles
18
6 Muffler
20
Dismantling
20
Cleaning and Inspection
20
Assembling
20
7 Starter
21
Dismantling
21
Cleaning and Inspection
21
Assembling
22
8 Ignition System
23
Checking the Ignition Spark
23
Dismantling the Ignition Module
25
Dismantling the Flywheel
26
Dismantling the Generator
27
Replacing the Drive Dogs
27
Assembling the Flywheel and Ignition Module
28
Assemble the Ignition Module
28
9 Carburettor
29
Description
29
Design
29
Function
29
Removing the Carburettor from Engine Unit
31
Dismantling
35
Assembling
38
Assembling the Carburettor on the Engine Unit
40
After Replacing the Carburettor Autotune
44
Engine Adjustment
44
10 Fuel System
45
Dismantling the Air Filter
45
Cleaning and Inspection of the Air Filter
45
Tank Venting
46
Cleaning the Fuel Cap
46
Replacing the Air Purge and Fuel Filter
47
11 Centrifugal Clutch
48
Dismantling
48
Dismantling Clutch Assembly
49
Dismantling Clutch Shoes and Springs
50
Cleaning and Inspection
50
Assembling Clutch Shoes and Springs
51
Assembling Clutch Assembly
51
12 Clutch Drum
52
Dismantling
52
Inspection
53
Assembling
53
13 Gear Head
54
Dismantling
54
Assembling
56
14 Cylinder and Piston
57
Dismantling the Cylinder and Piston
57
Cleaning and Inspection
58
Pressure Testing the Cylinder
59
Assembling
60
Analysis and Actions
61
15 Crankshaft and Crankcase
69
Dismantling
69
Inspection
71
Assembling
72
16 Troubleshooting
74
Engine Running Issue
75
Ignition System Diagnostic Flow Chart
77
Spark Test
78
4
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Husqvarna 545RXT AT Specifications
General
Engine Displacement
45.7 cm³
Weight
8.9 kg
Sound Power Level, Guaranteed (LWA)
117 dB(A)
Engine Type
2-stroke
Fuel Tank Volume
0.9 l
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