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Viking MB 655 - User Manual

Viking MB 655
124 pages
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EN
Repair instructions
2008 - 05
www.viking-garden.com
MB 650, MB 655

Table of Contents

Questions and Answers

  • S
    Sonya ScottAug 17, 2025
    How to fix a Viking MB 655 Lawn Mower when the engine doesn't start?
    • K
      Keith StewartAug 17, 2025
      If your Viking Lawn Mower engine doesn't start, the issue might be a detached or defective motorstop cable (attach or replace it), a detached, defective, or incorrectly adjusted throttle cable (attach, replace, or adjust it), a blocked air filter, a defective spark plug, a detached spark plug socket, or a defective fuel line (replace defective parts, attach the spark plug socket, and check for an ignition spark). It could also be a defective auto-choke (replace the Ready-Start device) or a bent motorstop cable fastening clip (adjust the fastening clip).
  • B
    Bradley DicksonAug 19, 2025
    What to do if my Viking Lawn Mower engine is overheating?
    • L
      Lorraine ArnoldAug 20, 2025
      If your Viking Lawn Mower engine is overheating, it could be due to dirty cooling ribs or engine parts, which require cleaning. Another possible cause is a low engine oil level, which you should top up.
  • S
    Stephanie Kirby MDAug 22, 2025
    Why is my Viking Lawn Mower hard to start and losing power?
    • D
      David HicksAug 22, 2025
      If your Viking Lawn Mower is hard to start and the engine power deteriorates, it could be due to dirty fuel, a dirty fuel filter, a dirty air filter, or a dirty spark plug. To resolve this, clean the fuel tank, check the fuel lines, clean the fuel filter, and clean or replace the spark plug. A blocked carburetor could also be the cause, requiring you to clean the carburetor.
  • G
    gutierrezanthonyAug 25, 2025
    How to troubleshoot the electric start on my Viking Lawn Mower?
    • L
      Lindsay BaileyAug 26, 2025
      If the electric start on your Viking Lawn Mower is not functioning, the starter battery might be discharged or defective; charge or replace it. Also, check for loose wires or a defective wiring harness, and check and replace the wiring harness if necessary. The ignition lock might also be defective, so check and replace it if needed. Finally, the starter itself could be defective, so check the starter.
  • C
    Cesar ReeseAug 28, 2025
    Why doesn't my Viking MB 655 Lawn Mower engine brake properly?
    • L
      Lindsay StevensAug 28, 2025
      If your Viking Lawn Mower engine isn't braking, the throttle cable might be detached, defective, or incorrectly adjusted; in this case, you should attach, replace, or adjust it. Another possibility is a bent motorstop cable fastening clip, which requires adjustment. Finally, the brake itself might be defective and require repair.
  • D
    Darryl WhiteAug 30, 2025
    Why does my Viking MB 655 Lawn Mower have no drive?
    • M
      Miranda HamptonAug 30, 2025
      If your Viking Lawn Mower has no drive, the wheel drive cable might be incorrectly adjusted or defective; adjust or replace it. Other potential causes include a defective V-belt (replace it), a defective drive pinion (replace it), a defective V-belt pulley (replace it), or a defective gearbox (replace it).
  • J
    Joseph NelsonSep 2, 2025
    What causes an uneven cut with my Viking Lawn Mower?
    • N
      nathancastilloSep 2, 2025
      An uneven cut with your Viking Lawn Mower can be caused by a blunt or worn mowing blade; re-sharpen or replace it. It may also be due to a bent catcher bag tab; replace the lower part of the catcher bag. Another cause might be a bent guiding plate, which you should replace.
  • Z
    zbrownSep 4, 2025
    What to do if the blade clutch is defective on my Viking MB 655?
    • G
      Gregory TaylorSep 4, 2025
      If the blade clutch on your Viking Lawn Mower is defective, it could be due to a detached or defective blade clutch cable; attach or replace the blade clutch. It may also be caused by a defective brake band (replace the brake band), a defective blade clutch lever (check and replace if necessary), a defective brake band lever (check and replace if necessary), or defective clutch parts such as linings, drums, shoes, thrust springs, or a stop plate (remove the blade clutch and replace the defective parts).
  • M
    Mary HarrisSep 7, 2025
    Why is the vario drive speed control not working on my Viking Lawn Mower?
    • R
      Robert StricklandSep 8, 2025
      If the Vario drive speed control on your Viking Lawn Mower isn't functioning, the Vario cable might be detached or defective; attach or replace the Vario cable and check the Vario gearbox return spring. It could also be that the Vario adjustment element or Vario ball bearing is defective; replace the adjustment element and ball bearing. A defective Vario lever could also be the cause; check and replace the Vario lever if necessary.
  • A
    Anthony WellsSep 10, 2025
    What to do if I cannot shift gears on my Viking Lawn Mower?
    • P
      perezcorySep 10, 2025
      If you cannot shift gears on your Viking Lawn Mower, the three-speed gearshift cable might be detached or defective; attach or replace the three-speed gearshift cable and check the three-speed gearbox return spring. Another cause could be a defective three-speed lever; check and replace the three-speed lever if necessary. It is also possible that the gearbox is defective; repair or replace the gearbox.

Summary

02. Handlebar

02.06 Replacing upper handlebar

Procedure for replacing the upper section of the handlebar assembly.

02.10 Replacing lower handlebar

Steps to remove and install the lower handlebar sections.

02.11 Replacing handlebar height adjustment

Guide for replacing the handlebar height adjustment mechanism.

03. Control bars and levers

03.01 Replacing wheel drive control bar

Steps to replace the control bar for the wheel drive system.

03.02 Replacing motorstop control bar

Procedure for replacing the motorstop control bar.

03.03 Replacing blade stop; Quick-Start control bar

Guide to replace the control bar for blade stop and quick start.

03.04 Replacing blade clutch; Quick-Start lever

Steps for replacing the blade clutch and quick-start lever assembly.

03.07 Replacing Vario; three-speed lever

Steps to replace the Vario or three-speed lever.

03.09 Replacing throttle lever

Guide for replacing the throttle lever assembly.

04. Chassis

04.01 Replacing front axle

Steps to remove and install the front axle assembly.

04.02 Replacing rear axle

Procedure for replacing the rear axle, including the gearbox.

04.04 Replacing wheel

Guide for removing and installing the front and rear wheels.

05. Housing

05.01 Replacing housing

Steps for removing and installing the main housing components.

05.02 Replacing housing cover assembly

Procedure for replacing the main engine cover assembly.

05.03 Replacing height adjustment handle

Steps to replace the handle for adjusting cutting height.

06. Gearbox

06.01 Replacing gearbox

Steps for removing and installing the main gearbox assembly.

06.02 Replacing V-belt pulley

07. Height adjustment

07.01 Replacing height adjustment spring

07.03 Replacing translatory lever

09. Mowing blade

09.01 Replacing mowing blade

Detailed instructions for replacing the lawn mower blade.

11. Blade clutch

11.01 Replacing blade mounting

Procedure for replacing the blade mounting assembly.

11.02 Replacing clutch linings

11.05 Replacing clutch shoes

11.07 Replacing clutch drum

12. Engine

12.01 Deactivating Quick-Start

Instructions for deactivating the Quick-Start system before repairs.

12.02 Replacing engine cover

12.03 Replacing V-belt pulley

12.04 Replacing V-belt

Steps to remove and install the engine V-belt.

12.05 Replacing engine

Guide for removing and installing the entire engine assembly.

14. Cables, wiring harness

14.01 Replacing motorstop cable

14.02 Replacing blade clutch; Quick-Start cable

Procedure for replacing blade clutch and Quick-Start cables.

14.03 Replacing wheel drive cable

14.04 Replacing Vario; three-speed drive speed control cable

Guide for replacing Vario/three-speed control cables.

14.05 Replacing throttle cable

15. General

15.01 Troubleshooting

Fault diagnosis and common solutions for operational issues.

15.02 Maintenance table

Schedule and procedures for routine maintenance tasks.

15.03 Torque values

Table of specified torque values for various fasteners.

Viking MB 655 Specifications

General IconGeneral
Cutting Width53 cm
Rated Power Output2.6 kW / 3.5 PS
Cutting Height25-85 mm
Weight46 kg
StartRecoil start
Engine Type4-stroke
Cutting Height Range25-85 mm
Grass CollectionYes
Displacement190 cm³
Cutting Height AdjustmentCentral

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