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  5. Owner's Manual

Northern Industrial Tools 999000 Owner's Manual

Manual is about: GAS-POWERED CUTOFF SAW

Summary of 999000

  • Page 1

    Gas-powered cutoff saw item# 999000 owner’s manual read carefully and understand rules for safe operation and instructions before operating. Failure to follow the safety rules and other basic safety precautions may result in serious personal injury..

  • Page 2: Introduction

    Introduction thank you for choosing a northern tool + equipment product, the cutoff saw,item# 999000. For future reference, please complete the owner’s record below: model:____________________________ purchase date:_______________________ save the receipt, warranty and this owner’s manual. It is imp...

  • Page 3

    Table of contents main parts and their functions 3–5 safety precautions 5–8 specifications 9 operation guide to the cutoff saw 10–13 1. Before starting 10–11 2. Starting 11–12 3. Operation 12 4. Emergency stopping 12 5. Notes on operation 12–13 adjustment of cutoff saw 13 1. Adjusting v-belt tension...

  • Page 4

    Main parts of the cutoff saw and their functions this product is composed of two main sections: a gasoline-powered 2-stroke engine and a driving/cutting system. When engine speed is up to 3800 rpm, the cutting blade, driven by the engine via a belt transmission system, begins to rotate at a high spe...

  • Page 5

    5. Front handle used to securely hold the saw while under operation. 6. Spark plug cover a removable cover for access to the spark plug. 7. Kill switch engine stops when this switch is pressed and held. 8. Full throttle lock button locks the throttle in full open position by pressing this button whi...

  • Page 6

    20. Blade guard adjusting lever allows adjustment of blade guard to direct dust away from operator. Safety precautions: as the cutoff saw is a high speed power tool, improper use of this saw might be hazardous. To avoid property damage or personal injury, it is extremely important to read, fully und...

  • Page 7

    Always install the blade so that the arrow on the blade points in direction of the rotation of the spindle. Before carrying or transporting your cutoff saw, make sure the engine is off. Never leave the engine running while unattended (e.G. On the ground). Proper tension of the v-belt is important. I...

  • Page 8

    Cutting masonry, concrete and other materials with silica in their composition may give off dust containing crystalline silica. Silica is a basic component of sand, quartz, brick clay, granite and numerous other minerals and rocks. Use of an approved respirator is recommended. Do not cut materials c...

  • Page 9

    Torsion load on the blade and may cause it to break or shatter. Only move the machine along a straight line, forward or “to and fro” in the cutting direction. 5. When cutting, position the saw at an appropriate distance so that your body is clear of the blade attachment yet you don’t have to overrea...

  • Page 10

    Specifications: model 1e49f (engine family 3zhis.0642cr) type single-cylinder, two-stroke, air-cooled cylinder bore 1.96" piston stroke 1.36" displacement 64.1 cc max. Output 3.8 hp speed at max. Output 8500 rpm max. Torque 3.5n.M idle speed 2400 rpm lock-up speed of clutch 3800 rpm min. Fuel consum...

  • Page 11

    Operation guide to cutoff saw 1. Before starting: preparation includes clearing and arranging work surroundings, wearing proper clothing and protection, and inspecting the cutoff saw. In preparation, please follow the procedures described in the appropriate section of this manual. For additional pre...

  • Page 12

    Tensioning the v-belt: (ref. Fig.6): loosen and unscrew the two hexagon bolts (2) on the v-belt guard (1) and then remove the v- belt guard. Loosen the three hexagon bolts (4) on the bearing plate (3). Turn the tensioning nut (5) clockwise until the v-belt is tensioned. Tighten the three hexagon bol...

  • Page 13

    Hold the front handle with left hand and firmly press the cutoff saw against ground, place the right foot on the carburetor box cover. Holding the starter grip (5) securely, slowly pull out the starter rope for a short distance, and then pull it through quickly and strongly. Note: starter rope is 3 ...

  • Page 14

    After the saw works for a certain period of time, let the engine idle on for a while to dissipate the heat. This will prevent some engine parts (ignition system, carburetor, etc.) from being damaged by over heating. Adjustment of cutoff saw 1. Adjusting v-belt tension: refer to the instruction descr...

  • Page 15

    1. Set the choke lever to . Fig. 11 2. Pull the filter cover lock lever (7) backward to let the filter cover (1) swing open. Then take out in succession p filter (2), pre-filter (3), filter housing (4), paper air filter (5), and the secondary filter (6). Then clean and dry all these parts. Replace i...

  • Page 16

    10. To tension the rewind spring, first guide the rope through the notch on the edge of the rope rotor and form a loop, use it to turn the rope rotor 4–5 times counterclockwise. 11. Then hold the rope rotor tight, pull out the twisted rope and untangle it. 12. Release the rope rotor, slowly let go o...

  • Page 17

    5. Maintenance chart the following information refers to normal operating conditions. The specified intervals must be reduced accordingly when working under aggravated conditions (severe dust formation, for example) and with longer daily working hours. Before starting work after work or daily every ...

  • Page 18

    Storing cutoff saw for long periods of storage: 1. Drain and clean the fuel tank, run engine until carburetor is dry. 2. Thoroughly clean the cutoff saw; tighten all nuts and bolts (except for adjusting screws). 3. Remove the blade and loosen the v-belt. Notes on transport and storage: 1. Avoid knoc...

  • Page 19

    1. Crankshaft housing assembly item ref description qty 1 1e49f01011 screw m5×20 10 2 1e49f01010 plug 1 3 1e49f01006 cover 1 4 1e49f01011 screw m5×20 3 5 gb97.1 washer 5 3 6 1e49f05000 coil 1 7 b1fud1 oil seal 17×28×7 1 8 1e49f01001 crankshaft housing-left 1 9 gb/t276-94 ball bearing 6203 1 10 1e49f...

  • Page 20

    2. Crankshaft & piston assembly item ref description qty item ref description qty 1 1e49f01009a flywheel/starter 1 16 1e49f02015 piston 1 2 1e49f03006- 02 screw plug 1 17 1e49f02014 piston ring 2 3 1e49f03006 starter grip 1 18 gb/t5801- 94 needle cage a4900 1 4 1e49f03006- 03 starter rope 1 19 1e49f...

  • Page 21

    3. Cylinder & muffler assembly item ref description qty 1 1e49f04001 cylinder 1 2 1e49f04003 spark plug 1 3 1e49f04004 cylinder cover 1 4 1e49f07016 screw m5×16 3 5 1e49f01011 screw m5×20 4 6 1e49f04002-03 washer 1 7 1e49f04002a decompression valve 1 8 1e49f04005 exhaust gasket 1 9 1e49f08000a muffl...

  • Page 22

    4. Oil tank & carburetor item ref description qty item ref description qty 1 1e49f01011 screw m5×20 8 13 1e49f06002 manifold 1 2 1e49fa07002 oil tank- left 1 14 1e49f06005 hose clip 1 3 1e49f07010 pin 2 15 1e4907006-01 o-ring 1 4 1e49f07009a rubber mount 2 16 1e49f07006 oil tank cap 1 5 1e49fa06005 ...

  • Page 23

    5. Handle & main cover assembly item ref description qty 1 1e49fa09001 main cover 1 2 1e49f09016 side sealing cover 1 3 1e49f09013 front sealing cover 1 4 1e49fa09002 spark plug cover 1 5 1e49fa5001 kill switch 1 6 gb/t845- 85 screw st2.9×13 2 7 1e49fa09010 handle molding 1 8 1e49f09010-03 torsion s...

  • Page 24

    6. Air filter assembly item ref description qty 1 1e49fa1004 filter cover 1 2 1e49f1003-02 pre-filter 1 3 1e49f1003-01 pre-filter 1 4 1e49fa10001 filter housing 1 5 1e49f10006 paper air filter 1 6 1e49f10007a secondary filter 1 7 gb/t845-85 screw st2.9×19 2 8 1e49fa10003 half round 1 9 1e49fa10002 f...

  • Page 25

    7. Cutter assembly item ref description qty item ref description qty 1 ehs400- 01010 hexagon bolt 1 16 gb/t65-85 screw m6×6 1 2 ehs400- 01011 washer 1 17 gb68-85 screw m6×12.5 1 3 ehs400- 01013-c flange 2 18 ehs400- 01019 tension spring 4 4 ehs400- 01014 blade clamp 1 19 ehs400- 01018 tension bush 4...

  • Page 26

    8. Transmission box & assembly item ref description qty item ref description qty 1 ehs400- 02007a transmission box 1 12 ehs400- 03003-01a support 1 2 1e49f01006 cover 3 13 ehs400- 03003-02a wheels 2 3 1e49f07019 screw m6×16 3 14 gb97.2-85 washer 8 2 4 1e49f01010 plug 3 15 1e49f070 18 screw m5×25 2 5...