Dolmar Chainsaw Repair Manual
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LANGUAGE:ENGLISH
PAGES:950+
DOWNLOADABLE:YES
FILE TYPE:PDF
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DOLMAR CHAINSAW REPAIR MANUAL |
Fundamentals There comes a time when work stops and the mechanic becomes abstracted, distant from the task at hand. Something about the machine does not conform to the picture in the mechanic’s mind. Images flash by until he or she finds one that most closely conforms to actual conditions. Once that is done, repairs can begin. Constructing visual images is what mechanics do; the other stuff is mere wrench-twisting. This chapter provides grist for these mental images.
- Because the material must be conveyed in words, it tends to be abstract. But once you can picture how these engines work, you will have made the first step in the journey to becoming a real mechanic.
- Spark-ignition engines operate in a cycle consisting of four events: intake, compression, expansion (or power), and exhaust. A fresh charge of air and fuel is inducted into the cylinder, which then is compressed by the piston and ignited by the spark plug.
- The pressure created by combustion reacts against the piston to generate torque on the crankshaft. The spent gases then exhaust into the atmosphere. Four-stroke-cycle engines require four up and down strokes of the piston, or two full crankshaft revolutions, to complete the cycle.
- Two-stroke-cycle engines telescope events into two strokes or one crankshaft revolution. For convenience we abbreviate the terms to four-cycle or four-stroke, and two-cycle or two-stroke.
TABLE OF CONTENTS:
DOLMAR CHAINSAW REPAIR MANUAL |
Contents.............................. 0
Introduction.......................... 0
1 Fundamentals........................ 3
Two-cycle operation............... 3
Displacement...................... 12
Compression ratio................. 13
Torque and horsepower............. 14
Premix............................ 15
Cooling........................... 16
Emissions......................... 18
The four-cycle option............. 22
Cleaner two-cycle exhaust......... 25
Marks of quality.................. 30
The learning curve................ 33
Long-term storage................. 34
Safety............................ 34
Recalls........................... 36
Conclusion........................ 36
2 Troubleshooting..................... 37
Things to keep in mind............ 38
Tools and supplies................ 38
Preliminaries..................... 39
Tests............................. 42
Complaints........................ 50
3 Ignition systems.................... 53
Diagnosis......................... 54
Flywheel.......................... 54
E-gap............................. 58
Magnetos.......................... 59
Spark plugs....................... 67
Summary........................... 70
4 Fuel systems........................ 71
Fuel tank......................... 71
Fuel filters...................... 71
Fuel lines........................ 72
Air filters....................... 73
Carburetors....................... 75
A last word.......................111
5 Starters and related components.....113
Troubleshooting...................113
Overview..........................114
Clutch-type starters..............118
Ratchet drive.....................124
Things to remember................129
6 Engine service......................131
Tests.............................131
Overview..........................133
Fasteners.........................134
Adhesives and sealants............136
Philosophy........................136
Housekeeping......................137
Cylinder head.....................137
Rings and piston..................139
Cylinder bores....................150
Lower end.........................154
Now that the hard part is done....162
7 Power transmission..................163
Centrifugal clutches..............163
V-belts...........................166
Belt-driven torque converter......170
Drive chains......................174
Sprockets.........................175
Geared drives.....................175
Friction drive....................180
Sign off..........................181
Index.................................183
PLEASE NOTE:
- This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
- Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.