Jonsered GR50 manual Fitting the blade guard and saw blade

Page 14

ASSEMBLY

•Fit the support flange (F) on the output shaft. Make sure that the blade is centered by fitting it to the guide on the support flange.

•Screw the support cup (E) onto the output shaft threads (CAUTION! Left-hand thread). Tighten to a torque of 35- 50 Nm (3.5-5.0 kpm). Use the socket spanner in the tool kit. Note that the locking pin (C) must remain inside the gear housing to lock the drive disk. Hold the shaft of the socket spanner as close to the blade guard/combination guard as possible.

WARNING! Tighten the lock screw (N) in the

!center hole of the support cup. Tighten to a torque of 35-50 Nm (3.5-5.0 kpm), CAUTION! Left-hand thread. If the lock screw is not fitted in the support cup, there is a risk that the support cup will come unscrewed. This means that the blade will also come loose, which could result in serious or fatal injury to the operator or others.

Fitting the blade guard and saw blade

•The blade guard (A) is fitted using 4 screws (L) as shown.

CAUTION!

Always use the recommended guard for the cutting attachment you are using. See chapter on Technical data.

L

A

To tighten the nut, turn the spanner in the opposite direction to the direction of rotation (Caution! left-hand thread).

G F

D

B

C

When loosening and tightening the saw blade nut, there is a risk of injury from the teeth of the saw blade. You should therefore always ensure that your hand is shielded by the blade guard when doing this. Always use a socket spanner with a shaft that is long enough to allow this. The arrow in the diagram shows the area where you should operate the socket spanner when loosening or tightening the nut.

Fitting the trimmer guard and trimmer head Trimmy SII

CAUTION! If the machine is to be used with a trimmer head, the fast idle speed must be reduced by 400-500 rpm. See instructions under the heading Carburettor.

•Fit the correct trimmer guard (A) for use with the trimmer head. Secure the trimmer guard using the 4 screws (L) and the support plate (M) as shown.

•Fit the drive disc (B) on the output shaft.

•Turn the blade shaft until one of the holes in the drive disc aligns with the corresponding hole in the gear housing.

•Insert the locking pin (C) in the hole to lock the shaft.

• Fit the drive disc (B) on the output shaft.

• Turn the blade shaft until one of the holes in the drive disc

aligns with the corresponding hole in the gear housing.

• Insert the locking pin (C) in the hole to lock the shaft.

• Place the blade (D) and support flange (F) on the output

shaft.

A

M

L B

C

• Fit the nut (G). The nut must be tightened to a torque of

35-50 Nm (3.5-5 kpm). Use the socket spanner in the tool

kit. Hold the shaft of the spanner as close to the blade

guard as possible.

•Screw on the trimmer head (H) in the opposite direction to the direction of rotation.

14 – English

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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 equipmentThrottle lock Machine′s safety equipmentStop switch Quick release Cutting attachment guardVibration damping system MufflerLocking nut Locking screwSharpening grass cutters and grass blades Cutting equipmentCutting equipment Sharpening the saw blade Trimmer headFitting a blade guard, grass blade and grass cutter AssemblyTransport position, handlebar Blade guard a is fitted using 4 screws L as shown Fitting the blade guard and saw bladeStandard harness Adjusting the harness and clearing sawFitting other guards and cutting attachments Correct balance Adjusting the harnessVector harness Fuel Fuel safetyFuel Handling Fueling MixingStarting and stopping Starting and StoppingCheck before starting Cold engineStarting StoppingGeneral working instructions Basic safety rulesWorking Techniques 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 CarburetorHigh speed jet H GR41, GR50, RS44 Fine adjustment of the idle speed TLow speed jet L High speed jet H RS52Cooling system Correctly adjusted carburetorMuffler Air filterSpark plug Cleaning the air filterBevel gear 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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