Table of Contents
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Petrol Powered Chainsaws
User Manual
[Revision 3.0 September 2017]
READ THIS MANUAL CAREFULLY BEFORE USE – FAILURE TO DO SO MAY RESULT IN INJURY,
PROPERTY DAMAGE AND MAY VOID WARRANTY. • KEEP THIS MANUAL FOR FUTURE REFERENCE.
• Products covered by this manual may vary in appearance, assembly, inclusions, specifications, description
and packaging.
E&OE
©2017 MTM
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Summary of Contents for MTM 82SX
- Page 1 READ THIS MANUAL CAREFULLY BEFORE USE – FAILURE TO DO SO MAY RESULT IN INJURY, PROPERTY DAMAGE AND MAY VOID WARRANTY. • KEEP THIS MANUAL FOR FUTURE REFERENCE. • Products covered by this manual may vary in appearance, assembly, inclusions, specifications, description and packaging. E&OE ©2017 MTM...
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Page 2: Safety
/ collection facilities, • For specific equipment safety use and ensure these are connected and used only, and far away from windows, doors properly. Dust collection can reduce care, see Equipment Safety. and vents. dust-related hazards. E&OE ©2017 MTM... - Page 3 • Do NOT make adjustments while the power lines. Electrical shock can be fatal. equipment is running. • Perform service related activities in suitable conditions, such as a workshop. • Replace worn, damaged or missing warning/safety labels immediately. E&OE ©2017 MTM...
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Page 4: Safety Symbols
Wear appropriate Always wait for moving parts injury to fingers, limbs, blood clothing and protectiove to stop fully before handling etc. Take due care when devices. the product, adjusting, handling and using the maintenence etc. product. E&OE ©2017 MTM... - Page 5 Use machine to PULL only. is not kinked or knotted. minimum number of cable and load. Do NOT use winch coils on winching mechanism. to move people. Winch Hook Hazard Carry hook to load – do NOT throw or run. E&OE ©2017 MTM...
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Page 6: Equipment Safety
Be aware of fire risks resulting from machine use. Ensure that the machine exhaust and spark arrestor (if equipped) is well maintained and that engine is tuned correctly. • Refuel outdoors only. Avoid fuel spillage. Start the machine at least 3m (10') away from the fuelling location. E&OE ©2017 MTM... - Page 7 When transporting the machine in a vehicle, ensure the engine is OFF and the chain brake is engaged, and the blade sheath is installed. Secure the machine in an upright position to prevent tip-over, machine damage or fuel spills. E&OE ©2017 MTM...
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Page 8: Table Of Contents
Removal/Installtion ..........................25 Spark Plug ..............................26 Cleaning and Gap Checking ........................ 26 Removal/Installation ..........................26 Fuel Strainer ............................... 27 Inspection and Cleaning ........................27 Removal/Installation ..........................27 Chain Lubricant Strainer ..........................28 Inspection and Cleaning ........................28 E&OE ©2017 MTM... - Page 9 Removal/Installation ..........................28 Engine Tuning Guidelines .......................... 29 Carburettor Adjustments ........................29 Tuning ..............................30 Cleaning Guidelines ........................... 31 Transportation and Storage ......................31 Troubleshooting ..........................32 Specifications ..........................34 Engine Service and Maintenance Record ..................35 E&OE ©2017 MTM...
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Page 10: Applicable Models
Petrol Powered Chainsaws Applicable Models This manual applies to the following MTM chainsaws: 82SX 24" 82cc 72SX 22" 72cc 62SX 22" 62cc 58SX 20" 58cc E&OE ©2017 MTM... -
Page 11: Parts Identification
Chain Lubricant Filler Cap Log Spike (where applicable) Rear Handle Chain Tension Adjustor (mechanism may vary between models) Spark Plug (underneath air filter cover on Chain Drive Cover (drive mechanism, some models) clutch and chain brake inside) Chain Brake Handle E&OE ©2017 MTM... -
Page 12: Before Use Checklist
Failure to remove any spacers before assembling and using the chainsaw may present an injury hazard and/or damage the machine, and will void product warranty. E&OE ©2017 MTM... - Page 13 3. If the machine is equipped with a vibration dampener (E), however, is not installed, place the dampener into position beneath the chain bar mounting. 4. Push down on the dampener and hold it down, then secure it using the supplied fastener (F). E&OE ©2017 MTM...
- Page 14 – see Adjusting Saw Chain Tension) and the drive cover studs enter the mounting holes in the chain drive cover. 9. Re-install the drive chain cover nuts, and tighten to "finger-tight" only, then adjust chain tension. E&OE ©2017 MTM...
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Page 15: Air Filter
Correct saw chain tension is extremely important in terms of both machine efficiency and operator safety. Check chain tension before each use. Check chain tension frequently during use – whenever the machine is put down (engine MUST be stopped first). E&OE ©2017 MTM... -
Page 16: Checking Tension
– rotate right (clockwise) to increase tension; rotate left (anti-clockwise) to reduce tension. 6. While still holding the end of the chain bar up, securely tighten the chain drive cover nuts. 7. Check chain tension and re-adjust, if necessary. E&OE ©2017 MTM... -
Page 17: Engine Starting And Stopping
If the engine is being permanently operated at high altitude, it is recommended to have an authorized service centre make the necessary carburettor adjustments. If the engine is used occasionally at altitude (not extreme altitudes), no adjustments should be required, however, a slight decrease in engine performance can be expected. E&OE ©2017 MTM... -
Page 18: Chainsaw Operation
To avoid kick-back: • Do NOT use the tip of the saw for cutting or allow it to make contact with any object. E&OE ©2017 MTM... -
Page 19: Using The Chain Brake
2 seconds – if the saw chain does not rotate, the chain brake is operational. If the saw chain rotates at all during the test, do NOT use the machine – have it serviced at an authorised service centre. E&OE ©2017 MTM... -
Page 20: Basic Cutting Guidelines
10% of the trunk remains uncut to create the "hinge" (E) – do NOT cut through the hinge. • To start and control direction of the fall, drive wooden wedges into the felling cut (7), as needed. E&OE ©2017 MTM... -
Page 21: Maintenance
• Bore for wear requiring reconditioning. • Full machine for broken, worn or loose parts. Failure to follow the maintenance schedule, using incorrect or non-compatible accessories or replacements parts, or general negligence may result in making the product warranty void. E&OE ©2017 MTM... -
Page 22: Maintenance Schedule - 2-Stroke Engines / Machines
Petrol Powered Chainsaws Maintenance Schedule – 2-Stroke Engines / Machines Where applicable. E&OE ©2017 MTM... -
Page 23: Saw Chain And Chain Bar
(H) – it is easy for the threads to be damaged if adjustment is attempted on a dirty mechanism. To install the saw chain, chain bar and chain drive cover, see here. To tension the saw chain, see here. E&OE ©2017 MTM... -
Page 24: Chain Lubricant
2. Using a funnel, carefully add chain lubricant to the tank (B) until its level is close to the filler hole. 3. When finished, re-install (rotate right) the chain lubricant tank cap until firm. Wipe off any residual oil from the machine. E&OE ©2017 MTM... -
Page 25: Air Filter
2. Re-install the filter cover, ensuring it is fitted properly against the engine and secure it with the screw (rotate right and tighten by hand. Do not over-tighten), or clips. E&OE ©2017 MTM... -
Page 26: Spark Plug
3. Place the electrical lead over the spark plug terminal and push it down so that it connects firmly terminal. 4. Re-install the rubber boot and ensure that it is seated firmly against the machine body. Re-install any other components (air filter, air filter cover etc) that were removed to access the spark plug. E&OE ©2017 MTM... -
Page 27: Fuel Strainer
To install the strainer: 1. Firmly push the strainer onto the fuel intake tube. 2. Place the tube back inside the fuel tank – it should rest along the bottom of the tank. Then, re-install the tank cap. E&OE ©2017 MTM... -
Page 28: Chain Lubricant Strainer
To install the strainer: 1. Firmly push the strainer onto the intake tube. 2. Place the tube back inside the chain lubricant tank – it should rest along the bottom of the tank. Then, re- install the tank cap. E&OE ©2017 MTM... -
Page 29: Engine Tuning Guidelines
If the high speed mixture is too lean, the engine maty reach speeds where bearing failure and cylinder seizure are likely. It will also lack power and tend to run very hot. E&OE ©2017 MTM... -
Page 30: Tuning
IN – the engine should start running better. Keep rotating the screw IN until the engine reaches maximum speed. Then, rotate the screw OUT one eighth (1/8) to one quarter (¼) of a turn to richen the air/fuel mixture for engine cooling purposes. E&OE ©2017 MTM... -
Page 31: Cleaning Guidelines
Remove the spark plug and put 5ml of clean engine oil into the cylinder. Pull the starter cord slowly several times to distribute the oil. Re-install the spark plug. • Cover the equipment to protect it. E&OE ©2017 MTM... -
Page 32: Troubleshooting
Adjust idle speed until engine runs smoothly and at a reasonable speed when idling. Cutting is poor. Possible Fault Action Blades dull or damaged Sharpen or replace saw chain. Engine in poor state of tune Tune engine. E&OE ©2017 MTM... - Page 33 Carburettor blocked Clean the carburettor. Excessive vibration. Possible Fault Action Blades dull or damaged Sharpen or replace saw chain. Fasteners loose Check all accessible fasteners (not carburettor adjustment screws) for tightness. E&OE ©2017 MTM...
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Page 34: Specifications
0.325" pitch, 0.058" gauge, 76 links / 20" chain bar with sprocket nose Engines Type 2-stroke, single cylinder Fuel Non-ethanol unleaded petrol (higher RON values provide best performance) Spark Plug 0.6 to 0.7mm (0.024 to 0.028”) Spark Plug Gap E&OE ©2017 MTM... -
Page 35: Engine Service And Maintenance Record
Fill out date, number of hours of use and the activity performed, as required (see Maintenance Schedule). Date Hours Use Maintenance Task / Notes E&OE ©2017 MTM... - Page 36 ©2017 MTM. All rights reserved. No part of this document, including descriptive content, concepts, ideas, diagrams or images may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, scanning or recording, or any information storage and retrieval system, without express permission or consent from the publisher.
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