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Husqvarna RA850 Workshop Manual

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Workshop manual
RA850
English
1048 - 002 - 18.09.2019

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Summary of Contents for Husqvarna RA850

  • Page 1 Workshop manual RA850 English 1048 - 002 - 18.09.2019...

  • Page 2: Table Of Contents

    2.1 Safety definitions............4 2.2 General safety instructions........4 2.3 Symbols on the attachment and on the power unit................4 3 Servicing data 3.1 Servicing data RA850..........5 3.2 Maintenance schedule........... 7 4 Servicing tools 4.1 Servicing tools............8 5 Repair instructions 5.1 To clean and examine the product parts....9 5.2 Shaft...............9...

  • Page 3: Introduction

    1.5 Servicing tools The manual gives information about necessary servicing tools. Always use original tools from Husqvarna. 1048 - 002 - 18.09.2019 Introduction - 3...

  • Page 4: Safety

    2 Safety 2.1 Safety definitions The product can cause objects to eject, Warnings, cautions and notes are used to point out which can cause injury. specially important parts of the manual. Keep a minimum of 15 m / 50 ft distance WARNING: Used if there is a risk of injury or to persons and animals during operation death for the operator or bystanders if the...

  • Page 5: Servicing Data

    3 Servicing data 3.1 Servicing data RA850 6-8 Nm 3-5 Nm 8-10 Nm NV17 9-15 Nm 6-8 Nm 9-15 Nm 15-20 Nm NV13 3-5 Nm 1048 - 002 - 18.09.2019 Servicing data - 5...
  • Page 6 6-8 Nm 6-8 Nm 6 - Servicing data 1048 - 002 - 18.09.2019...

  • Page 7: Maintenance Schedule

    3.2 Maintenance schedule Maintenance Daily Maintenance interval mainte- nance before Weekly 100 h Monthly opera- tion Clean the product Make sure that the blades are not defective or worn. Replace if it is nec- essary. Make sure that the cutting attachment guard is not damaged. Replace if it is necessary.

  • Page 8: Servicing Tools

    4 Servicing tools 4.1 Servicing tools Item Description Use for Article number Tool kit, Arm disassembly tool To remove the lower arm in the gear 598 56 00-01 housing. Holder Arm disassembly tool. Puller hook Arm disassembly tool. Screw To attach the puller hook to the hold- Bolt Arm disassembly tool.

  • Page 9: Repair Instructions

    5 Repair instructions 5.1 To clean and examine the product parts 5.2.2 To apply grease to the two-piece shaft • Apply grease to the end of the drive shaft after each • Clean and examine all parts fully. You find more 30 hours of operation.

  • Page 10: Blades

    3. Carefully push the shaft into the coupling until you Note: The blades are interchangeable. hear a click. 1. Remove the center screw (A), the washer (B) and the support cup (C). 4. Tighten the knob fully. Note: The center screw has a left hand thread 5.3 Blades 2.

  • Page 11: Gear Housing

    3. Remove the 4 screws (G) and the top blade (H). 3. Sharpen the edges (B) that you can access with a grinder. Make sure not to make the edges rounded (A). 4. Turn the combination wrench in the opposite direction to get access to the opposite edges.
  • Page 12 3. Remove the gasket. 6. Remove the washer (C) and the top connecting rod (D). 4. Remove the grease. 7. Remove the shaft for the lower blade (E), the top arm (F) and the shims (G). 5. Remove the shim (A) and the nut (B). 8.
  • Page 13 Servicing tools on 9. Remove the lower connecting rod. 12. Put the pin on the shaft. Refer to page 8 . 10. Remove the gear. Servicing 13. Put the holder on the lower arm. Refer to tools on page 8 . 11.
  • Page 14 a) Do the same procedure for the remaining 5 17. Hold the holder (A) with a wrench and tighten the puller hooks. bolt (B) until the lower arm is loose. 15. Attach the 6 puller hooks to the holder with the 6 18.
  • Page 15 Servicing tools 5.4.2 To assemble the gear housing 4. Put the collar into the shaft. Refer to on page 8 . 1. Install the shaft. Make sure that the mark on the shaft aligns with the mark in the gear housing. 2.
  • Page 16 7. Put the bolt through the spacer, the press tool guide 11. Install the shaft (A) and the spacer (B). Servicing tools on page 8 . and the collar. Refer to 12. Install the gear. 8. Put the nut on the bolt. Refer to Servicing tools on page 8 .
  • Page 17 15. Install the shaft for the lower blade (C). 18. Tighten the nut (H) and install the shim (I). 16. Install the top arm (D) and the shims (E) above and 19. Install the gasket. below the top arm (D). Make sure that the mark on the top arm (D) aligns with the mark in the shaft (C).
  • Page 18 4. Apply heat to the gear housing and the gear housing lid until they are approximately 110°C. 5. Tap the gear housing and the gear housing lid against a wooden block to remove the bearings. 6. Push in the new bearings into the grooves. 5.4.4 To lubricate the gear housing CAUTION: Do not fill the gear housing fully.

  • Page 19: Technical Data

    6 Technical data 6.1 Technical data RA850 Weight Weight, kg Noise emissions Sound power level, measured dB (A) Sound power level, guaranteed L , dB (A) Noise levels Equivalent sound pressure level at the operator’s ear, measured according to EN ISO 11806-1 and EN ISO 22868,...
  • Page 20 1141224-26 2019-09-23...

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