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Jonsered YT42 - User Manual

Jonsered YT42
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Gasoline containing up to 10% ethanol (E10) is acceptable for use in this machine.
The use of any gasoline exceeding 10% ethanol (E10) will void the product warranty.
YT42
Operator's Manual
587 89 04-26
WARNING:
Read this Man u al and follow all Warnings
and Safety Instructions. Fail ure to do so
can re sult in serious in ju ry.
10.22.14 AP
Printed in the U.S.A.

Questions and Answers

  • R
    Raymond McgrathSep 12, 2025
    What causes loss of drive in Jonsered YT42?
    • E
      Erica HaasSep 12, 2025
      A loss of drive in your Jonsered Lawn Mower may occur if the freewheel control is in the “disengaged” position (place it in the “engaged” position), if the motion drive belt is worn, damaged, or broken (replace the motion drive belt), or if the axle key is missing (install axle key at rear wheel).
  • K
    kristajonesSep 12, 2025
    What to do if Jonsered YT42 Lawn Mower engine continues to run when operator leaves seat?
    • M
      Melissa DyerSep 13, 2025
      If the engine on your Jonsered Lawn Mower continues to run when you leave the seat with the attachment clutch engaged, it indicates a faulty operator-safety presence control system. Check the wiring, switches, and connections. Do not operate the machine until the problem is corrected.
  • K
    Kelly MorrisSep 14, 2025
    Why Jonsered YT42 engine "backfires” when turning engine “OFF”?
    • C
      carpenterkevinSep 14, 2025
      If your Jonsered Lawn Mower engine backfires when turning it off, make sure the engine throttle control is set between half and full speed (fast) position before stopping the engine.
  • A
    Angela McneilSep 16, 2025
    Why Jonsered Lawn Mower engine dies when tractor is shifted into reverse?
    • A
      Alyssa Riley MDSep 16, 2025
      If the engine on your Jonsered Lawn Mower dies when shifted into reverse, ensure that the Reverse Operation System (ROS) is "ON" while the mower or other attachment is engaged. Turn the ignition key to the ROS "ON" position.
  • N
    nicole80Nov 20, 2025
    What to do if Jonsered Lawn Mower loses power?
    • K
      Keith SchmidtNov 20, 2025
      If your Jonsered Lawn Mower is losing power, consider these potential causes: You might be cutting too much grass or moving too fast, so raise the cutting height and reduce your speed. Check that the throttle isn't in the “CHOKE” position and adjust it. There could be a buildup of grass, leaves, or trash under the mower, so clean the underside of the mower housing. Also, check for a dirty air filter (clean or replace it), low or dirty oil (check and change the oil), a faulty spark plug (clean, regap, or replace it), a dirty fuel filter (replace it), stale or dirty fuel (empty and refill with fresh fuel), or water in the fuel (empty the tank and carburetor, refill with fresh gasoline, and replace the fuel filter). Ensure the spark plug wire is connected and tight. Clean any dirt from the en...

Jonsered YT42 Specifications

General IconGeneral
BrandJonsered
ModelYT42
CategoryLawn Mower
LanguageEnglish

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