Symbols CAUTION! Chain saws can be dangerous! Careless or incorrect use can result in serious or fatal injury to the operator or others. Please read the instructions carefully and make sure you understand them before using the saw. Always wear: •...
A chain saw is a dangerous tool if used carelessly or incorrectly and can cause serious, even fatal injuries. It is very important that you read and understand these instructions. PERSONAL PROTECTIVE EQUIPMENT MOST CHAIN SAW ACCIDENTS HAPPEN WHEN THE CHAIN TOUCHES THE OPERA- TOR.
1 Chain brake and front hand guard YOUR chain saw is equipped with a chain brake that is desig- ned to stop the chain immediately if you get a kickback. The chain brake reduces the risk of accidents, but only You can prevent them.
The way the chain brake is triggered, either manually or automatically, depends on the force of the kickback and the position of the chain saw in relation to the object that the kickback zone of the bar strikes. If you get a violent kickback while the kickback zone of the bar is farthest away from you...
5 Vibration damping system Your chain saw is equipped with a vibration damping system that is designed to minimise vibrations and make operation easier. When you use a chain saw vibrations are generated by the uneven contact between the chain and the wood you are cutting.
Inspecting, maintaining and servicing chain saw safety equipment SPECIAL TRAINING IS REQUIRED to service and repair chain saws. This is especially true of chain saw safety equipment. If your chain saw fails any of the checks described below take it to your SERVICE AGENT. When you buy any of our products we guarantee the availability of professional repairs and service.
2 Throttle lock Make sure the throttle control is locked at the idle setting when you release the throttle lock. Press the throttle lock and make sure it returns to its original position when you release it. Check that the throttle control and throttle lock move freely and that the return springs work...
7 Muffler Never use a chain saw that has a faulty muffler. Regularly check that the muffler is securely attached to the chain saw. If the muffler on your saw is fitted with a spark arrestor mesh this must be cleaned regularly. A blocked mesh will cause the engine to overheat and may lead to serious...
1 Cutting equipment designed to minimise kickback Faulty cutting equipment or the wrong combination of bar and chain increases the risk of kickback. Use only the bar and chain combinations recommended in the ”Technical data” section. The only way to avoid kickback is to make sure that the kick- back zone of the bar never touches anything.
2 Sharpening your chain and adjusting raker clearance The risk of kickback is increased with a badly sharpened chain! A General information on sharpening cutting teeth • Never use a blunt chain. When the chain is blunt you have to exert more pressure to force the bar through the wood and the cuttings will be very small.
C General advice on setting raker clearance • When you sharpen the cutting teeth you reduce the RAKER CLEARANCE (cutting depth). To maintain cutting performance you must file back the raker teeth to the recommended height. See the ”Technical data” section to find the raker clearance for your saw chain.
SAFETY INSTRUCTIONS 4 Lubricating cutting equipment A Chain oil • Chainsaw chain oil must demonstrate good adhesion to the chain and also maintain its flow caracteristics regardless of whether it is warm summer or cold winter weather. • As a chainsaw manufacturer we have developed an optimal chain oil which, with its vegetable oil base, is also biodegradable.
C Checking chain lubrication • Check the chain lubrication each time you refuel. Aim the tip of the saw at a light coloured surface about 20 cm away. After 1 minute running at 3/4 throttle you should see a distinct line of oil on the light surface.
H Bar Check regularly: • Whether there are burrs on the edges of the bar. Remove these with a file if necessary. • Whether the groove in the bar has become badly worn. Replace the bar if necessary. • Whether the tip of the bar is uneven or badly worn.
General rules If you understand what kickback is and how it happens then you can reduce or eliminate the element of surprise. By being prepared you reduce the risk. Kickback is usually quite mild, but it can sometimes be very sudden and violent.
• Move the saw at least 3 m from the refuelling point before starting it. • Never start the chainsaw: If you have spilt fuel or chain oil on the saw. Wipe off the spill and allow remaining fuel to evaporate.
GENERAL WORKING INSTRUCTIONS This section describes basic safety rules for using a chain saw. This information is no substitute for professional skills and experience. If you get into a situation where you feel unsafe, stop and seek expert advice (look under FORESTRY SERVICES in the telephone directory).
2 Basic cutting technique General • Always use full throttle when cutting! • Reduce the speed to idle after every cut (running the engine for too long at full throttle without any load can lead to serious engine damage). • Cutting from above = Cutting on the pull stroke. •...
2 The log is supported at one end. There is a high risk that it will split. A Start by cutting from below (about 1/3 of the way through). B Finish by cutting from above so that the two cuts meet. 3 The log is supported at both ends.
C Clearing the trunk and preparing your retreat Remove any branches that are in the way. To do this it is best to work from the top down and keep the trunk between you and the chain saw. Never limb above shoulder height.
We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the FELLING CUT and DIRECTIONAL CUT with single cutting stokes. (See ”Technical data” to find out which lengths of bar are recommended for your saw).
Mounting guide bar and chain Always wear gloves, when working with the chain, in order to protect your hands from injury. Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle. Take off the bar nuts and remove the clutch cover.
• When working at continuous high revs a higher octane rating is recommended. Two-stroke oil • For the best results use JONSERED two-stroke oil, which is especially developed for chain saws. Mixing ratio 1:50 (2%). • Never use two-stroke oil intended for water cooled outboard engines, so-called, outboard oil.
Fuelling Taking the following precautions, will lessen the risk of fire. • Do not smoke or place warm objects in the vicinity of the fuel. • Always shut off the engine before refuelling. • Slowly open the fuel cap, when filling fuel, so that possible overpressure is slowly released.
Start and stop WARNING! • Never start the saw engine without the bar, chain and clutch cover (chain brake) assembled - or else the clutch can come loose and cause personal injuries. • Always move the saw away from the fueling area before starting.
Carburetor Carburetor Your Jonsered product has been designed and manufactured to specifications that reduce harmful emissions. After your unit has been run 8-10 tanks of fuel the engine has broken in. To ensure that your unit is at peak performance and...
Starter device WARNING! • When the recoil spring is assembled in the starter housing, it is in tensioned position and can when treated carelessly, pop out and cause injuries. • Always be careful, when changing the recoil spring or the starter cord. Always wear safety goggles for eye protection.
Air filter The air filter must be regularly cleaned from dust and dirt in order to avoid: • Carburetor malfunctions • Starting problems • Engine power reduction • Unnecessary wear on the engine parts • Abnormal fuel consumption Clean the air filter daily or more often if the air is exceptionally dusty in the working area.
Cooling system To obtain the lowest possible running temperature the saw is equipped with a cooling system.The cooling system consists of: Air intake on the starter unit. Air guide plate. Fan blades on the flywheel. Cooling fins on the cylinder. Cylinder cowling (supplies cold air over the cylinder).
Weekly maintenance Check that the AV elements are not soft or torn. Lubricate the clutch drum bearing. File off burrs, if any, on the sides of the bar. Clean the spark plug and check the gap. The correct gap is 0.5 mm (.020 inch).
3,0/49 1,73/44 Following is a list of recommended cutting equipment for 1,26/32 the Jonsered chain saw models 2045 and 2050. The 2 500 combinations of power head, bar and chain have been 2,3/ 9 000 investigated in accordance with the kickback and vibration requirements of ANSI B 175.1–1991.
You are responsible for presenting your small nonroad engine to a Husqvarna AB authorized servicing dealer for Jonsered products as soon as a problem exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30 days.