Jonsered GR50 manual Sharpening the saw blade, Trimmer head

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GENERAL SAFETY PRECAUTIONS

•Sharpen all edges equally to maintain the balance of the blade.

WARNING! Always discard a blade that is

!bent, twisted, cracked, broken or damaged in any other way. Never attempt to straighten a twisted blade so that it can be reused. Only use original blades of the specified type.

Sharpening the saw blade

•See the cutting attachment packaging for correct sharpening instructions.

A correctly sharpened blade is essential for working efficiently and to avoid unnecessary wear to the blade and clearing saw.

•Make sure that the blade is well supported when you file it. Use a 5.5 mm round file with a file holder.

•The filing angle is 15°. File alternate teeth to the right and those in between to the left. If the blade has been heavily pitted by stones it may be necessary to dress the top edges of the teeth with a flat file, in exceptional cases. If so, this should be done before filing with a round file. The top edges must be filed down by the same amount for all the teeth.

Adjust the blade setting. This should be 1 mm.

Trimmer head

IMPORTANT!

Always ensure the trimmer cord is wound tightly and evenly around the drum, otherwise the machine will generate harmful vibration.

•Only use the recommended trimmer heads and trimmer cords.These have been tested by the manufacturer to suit a particular engine size. This is especially important when a fully automatic trimmer head is used. Only use the recommended cutting attachment. See the chapter on Technical data.

•Smaller machines generally require small trimmer heads and vice versa. This is because when clearing using a cord the engine must throw out the cord radially from the trimmer head and overcome the resistance of the grass being cleared.

•The length of the cord is also important. A longer cord requires greater engine power than a shorter cord of the same diameter.

•Make sure that the cutter on the trimmer guard is intact. This is used to cut the cord to the correct length.

•To increase the life of the cord it can be soaked in water for a couple of days.This will make the line tougher so that it lasts longer.

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Contents Operator’s manual EPA KEY to Symbols SymbolsContents Introduction Dear customerWhat is WHAT? What is what on the clearing saw? RS44What is what on the clearing saw? RS52 General Safety Precautions Personal protective equipmentMachine′s safety equipment Stop switchThrottle lock Cutting attachment guard Vibration damping systemQuick release MufflerLocking nut Locking screwCutting equipment Cutting equipmentSharpening grass cutters and grass blades Sharpening the saw blade Trimmer headAssembly Transport position, handlebarFitting a blade guard, grass blade and grass cutter Blade guard a is fitted using 4 screws L as shown Fitting the blade guard and saw bladeAdjusting the harness and clearing saw Fitting other guards and cutting attachmentsStandard harness Adjusting the harness Vector harnessCorrect balance Fuel safety Fuel HandlingFuel Fueling MixingStarting and Stopping Check before startingStarting and stopping Cold engineStarting StoppingBasic safety rules Working TechniquesGeneral working instructions ABC of clearingForestry clearing using a saw blade Brush cutting with a saw bladeGrass clearing using a grass blade Grass trimming with a trimmer headSweeping Maintenance CarburetorFine adjustment of the idle speed T Low speed jet LHigh speed jet H GR41, GR50, RS44 High speed jet H RS52Correctly adjusted carburetor MufflerCooling system Air filterCleaning the air filter Bevel gearSpark plug Maintenance schedule Maintenance Daily Weekly MonthlyTechnical Data Technical dataFederal Emission Control Warranty Statement Your Warranty Rights and ObligationsTrimmy SII Page ´z+R!o¶5*¨ Page 1150017-95 ´z+R!o¶5*¨ ´z+R!o¶5*¨

GR50 specifications

The Jonsered GR50 is a robust and versatile garden tractor that caters to the needs of both residential and professional gardeners. Designed for performance, the GR50 merges comfort and advanced technology, making it a popular choice among gardening enthusiasts.

One of the standout features of the Jonsered GR50 is its powerful engine. It comes equipped with a high-performance overhead valve engine that provides excellent torque and reliability. This engine ensures that the tractor can handle various terrain types and grass heights, making it ideal for both small and large lawns. Additionally, the high-efficiency engine minimizes fuel consumption while maximizing power output, making it an economical choice for users.

The GR50 offers an impressive cutting deck, which is available in various sizes to meet different mowing needs. The adjustable cutting height allows users to customize the grass length, ensuring a clean and even cut every time. The cutting deck design incorporates anti-scalp wheels, which help to prevent turf damage, especially on uneven surfaces. This feature is crucial for maintaining a healthy lawn and enhancing the overall appearance of outdoor spaces.

One of the key technologies integrated into the Jonsered GR50 is its hydrostatic transmission, which provides smooth and uninterrupted speed control. Users can easily adjust their mowing speed without constantly shifting gears, making it easier to navigate around obstacles or maneuver in tighter spaces. This feature significantly improves user experience and efficiency during mowing tasks.

Comfort is also a top priority in the design of the GR50. It features an ergonomically designed seat that is both adjustable and padded, allowing users to mow for extended periods without discomfort. The easy-to-use dashboard includes intuitive controls that enable quick adjustments and settings changes. This focus on user comfort and convenience makes the GR50 a delight to operate.

Furthermore, the Jonsered GR50 is designed with durability in mind. Its robust construction, combined with high-quality materials, ensures that it can withstand the rigors of regular use. This makes it a reliable investment for anyone looking to maintain their garden or lawn.

In summary, the Jonsered GR50 is a powerful, efficient, and comfortable garden tractor that embodies the perfect blend of technology and user-friendly features. With its strong engine, versatile cutting deck, hydrostatic transmission, and ergonomic design, it stands out as a top choice for gardening tasks. Whether for residential use or professional landscaping, the GR50 delivers exceptional performance and reliability.
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