Dynamo
Posts: 421
Joined: 1/28/2008
Status: offline
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If you’ve ever removed the swingarm from your straight axle Honda ATV, you’ve seen the locknut on the right side swingarm bolt. This locknut requires a special tool that is not easily obtained and a little on the expensive side. You can make your own tool to allow easy removal/installation of the swingarm locknut. (This does not apply to the Rancher 420 as it uses through-bolts to fasten the swingarm.) This is the locknut in question. And here is the special Honda locknut tool. To make your own locknut removal tool, grab an old 1" impact socket and grind/cut the end to form four equally sized tabs that fit into the locknut’s notches. A bench grinder and rotary tool with cutting disc make this an easy modification. Here is what the modified socket should look like. Just fit the socket on a ratchet or breaker bar and you can easily remove/reinstall your swingarm’s locknut. I have heard of people using a punch and hammer to remove/reinstall this locknut, but I would advise against this for two reasons. First, the threads can be damaged if the punch slips. Second, the locknut needs to be tightened to a torque of 83 ft/lbs. You will never be able to tighten the locknut to 83 ft/lbs with a punch and hammer and it could back out while riding the ATV, creating a safety hazard. So take a few minutes to fabricate this easy-to-make tool and you’ll save yourself a lot of headaches... and some money.
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