Jonsered GR50 - Manual

English – 7 GENERAL SAFETY PRECAUTIONS Important Personal protective equipment HELMET A helmet should be worn if the trees being cleared are taller than 2 m. HEARING PROTECTION Wear hearing protection that provides adequate noise reduction. EYE PROTECTION Always wear approved eye protection. If you ...

8 – English GENERAL SAFETY PRECAUTIONS Machine ′′′′ s safety equipment This section describes the machine ′ s safety equipment, its purpose, and how checks and maintenance should be carried out to ensure that it operates correctly. See the ”What is what?” section to locate where this equipment is po...

English – 9 GENERAL SAFETY PRECAUTIONS Cutting attachment guard This guard is intended to prevent loose objects from being thrown towards the operator. The guard also protects the operator from accidental contact with the cutting attachment. Check that the guard is undamaged and not cracked. Replace...

10 – English GENERAL SAFETY PRECAUTIONS For muf fl ers it is very important that you follow the instructions on checking, maintaining and servicing your machine. See instructions under the heading Checking, maintaining and servicing the machine’s safety equipment. Never use a machine that has a faul...

English – 11 GENERAL SAFETY PRECAUTIONS Cutting equipment This section describes how to choose and maintain your cutting equipment in order to: • Reduce the risk of blade thrust. • Obtain maximum cutting performance. • Extend the life of cutting equipment. Cutting equipment Saw blades are intended f...

12 – English GENERAL SAFETY PRECAUTIONS • Sharpen all edges equally to maintain the balance of the blade. Sharpening the saw blade • See the cutting attachment packaging for correct sharpening instructions. A correctly sharpened blade is essential for working ef fi ciently and to avoid unnecessary w...

English – 13 ASSEMBLY Assembling the handlebar and throttle • Unscrew the knob from the handlebar mounting. • Position the handlebar as shown. Fit the mounting components and tighten the knob lightly. • Fit the right handle to the handlebar using the screw, washer, sleeve and nut as shown. Tighten. ...

English – 15 ASSEMBLY • Tighten the trimmer head to a torque of 35-50 Nm (3.5-5 kpm). • To dismantle, follow the instructions in the reverse order. Fitting other guards and cutting attachments Fit the trimmer guard/combination guard (A) intended for use with the trimmer head/plastic blades. Secure t...

16 – English ASSEMBLY 2 Grass clearing The machine should be supported in a harness when grass clearing so that the cutting equipment is parallel to the ground. Vector harness Safety release Push down the red release lever to release the machine from the harness. Adjusting the harness 1 Tighten the ...

English – 17 FUEL HANDLING Fuel safety Never start the machine: 1 If you have spilt fuel on it. Wipe off the spillage and allow remaining fuel to evaporate. 2 If you have spilt fuel on yourself or your clothes, change your clothes. Wash any part of your body that has come in contact with fuel. Use s...

18 – English FUEL HANDLING Mixing • Always mix the gasoline and oil in a clean container intended for fuel. • Always start by fi lling half the amount of the gasoline to be used. Then add the entire amount of oil. Mix (shake) the fuel mixture. Add the remaining amount of gasoline. • Mix (shake) the ...

English – 19 STARTING AND STOPPING Check before starting • Check the blade to ensure that no cracks have formed at the bottom of the teeth or by the centre hole. The most common reason why cracks are formed is that sharp corners have been formed at the bottom of the teeth while sharpening or that th...

20 – English STARTING AND STOPPING Starting Hold the body of the machine on the ground using your left hand (CAUTION! Not with your foot!). Grip the starter handle, slowly pull out the cord with your right hand until you feel some resistance (the starter pawls grip), now quickly and powerfully pull ...

English – 21 WORKING TECHNIQUES General working instructions Basic safety rules 1 Look around you: • To ensure that people, animals or other things cannot affect your control of the machine. • To ensure that people, animals, etc., do not come into contact with the cutting attachment or loose objects...

22 – English WORKING TECHNIQUES • Work systematically to and fro across the area, clearing a width of around 4-5 m on each pass. This exploits the full reach of the machine in both directions and gives the operator a convenient and varied working area to work in. • Clear a strip around 75 m long. Mo...

English – 23 WORKING TECHNIQUES • With groups of hardwood stems, fi rst clear around the group. Start by cutting the stems high up around the outside of the group to avoid jamming. Then cut the stems to the required height. Now try to reach in with the blade and cut from the centre of the group. If ...

English – 25 MAINTENANCE Carburetor Your Jonsered product has been designed and manufactured to speci fi cations that reduce harmful exhaust fumes. The engine will be run in after it has used 8-10 tanks of fuel. To ensure that the engine runs at peak performance and produces as little harmful exhaus...

26 – English MAINTENANCE Low speed jet L Try to fi nd the highest idling speed, turning the low speed needle L clockwise respectively counter-clockwise. When the highest speed has been found, turn the low speed needle L 1/4 turn counter-clockwise. Fine adjustment of the idle speed T Adjust the idle ...

English – 27 MAINTENANCE Correctly adjusted carburetor When the carburetor is correctly adjusted the machine will accelerate without hesitation and burble a little at maximum speed. It is also important that the cutting attachment does not rotate at idle. If the low speed jet L is set too lean it ma...

28 – English MAINTENANCE Cleaning the air fi lter Remove the air fi lter cover and take out the fi lter. Wash it clean in warm, soapy water. Ensure that the fi lter is dry before re fi tting it. An air fi lter that has been in use for a long time cannot be cleaned completely. The fi lter must theref...

English – 29 MAINTENANCE Maintenance schedule The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the Maintenance section. The user must only carry out the maintenance and service work described in this manual. More extensive work must...

30 – English TECHNICAL DATA Technical data Note 1: Equivalent noise pressure level is calculated as the time-weighted energy total for noise pressure levels under various working conditions with the following time distribution: 1/2 idle and 1/2 max. speed. NOTE! Noise pressure at the user’s ear and ...

English – 31 FEDERAL EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The EPA (The US Environmental Protection Agency), Environment Canada and Jonsered are pleased to explain the emissions control system warranty on your 2001 and later small nonroad engine. In U.S. and Canada...

1 2 3 4 5 6 7 8 9 35-50 NM ~ 15 cm 6' "Clic" ~ 3,5 m 11' 7,0 m 23' 2,4-3,3 mm .095"-.130" 12 cm 5" Trimmy SII