How do I Fix the Husqvarna 235 E-Series Chain Tightener?

Written by patrick nelson
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How do I Fix the Husqvarna 235 E-Series Chain Tightener?
Periodically, the chain will need to be tightened. (Hemera Technologies/ Images)

Husqvarna produced its first motor driven lawnmower in 1956 at its factory on the Husqvarna River in Sweden -- the same factory that produced muskets for Swedish King Karl XI in 1689. Husqvarna's 235e chainsaw features a 1.3kW engine with a 14- or 16-inch chain bar. Periodically, the chain will need tightening, and from time to time the chain tightener will need to be fixed. Fixing the chain tightener can be accomplished by fitting the bar and chain properly.

Skill level:
Moderately Easy

Things you need

  • Wrench

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  1. 1

    Move the front hand guard toward the front handle so that the chain brake is disengaged. Remove the knob and the clutch cover. Check that the transportation ring is removed. This is installed at the factory and allows the chainsaw to be shipped. If the chainsaw tightener isn't working properly, this can be a cause.

  2. 2

    Verify that the bar is firmly attached. It should be over the bar bolts and the bar should be in the rearmost position. Reattach it with the wrench if it is loose or not fitted.

  3. 3

    Check that the chain is over the drive sprocket in the bar. The drive sprocket is in the groove. If it isn't, place it there by lifting it and inserting it into place. Start at the top edge of the bar.

  4. 4

    Replace the clutch cover and check that the chain is still in the drive sprocket. Adjust the chain tension by turning the wheel down toward the "+" mark. Adjust the chain until it doesn't sag from the bottom of the bar and can be turned easily by hand. If the tightening is still not working, repeat the previous steps, ensuring that the chain is in the drive sprocket.

  5. 5

    Tighten the bar knob by turning it clockwise.

Tips and warnings

  • It is normal for chain tension to need frequent adjusting during the breaking-in period; it is not an indication that the tightener function doesn't work.

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