Circlip (wrist pin clips) Cass I need one

I need a class on them clips uninstall install any and all tips. I sent 3 flying across the shop sounded like they were running mack 1 when they left the saw.:hmm3grin2orange: There has got to be a better way than the way I'm doing it, start one end and work it around with a carb tuning screw driver.


The story if you care to read it. The fourth one I thought I shot into the lower end of the saw. I got into a fight with myself at this point. Listen here You SOB it is in the bottom end or it isn't none of this I think stuff. Stop yelling at me I going in the bathroom and locking the door untill you say your sorry. Take a samich with you it will be a long wait. :biggrin:

So I turn the saw upside down and bang it on the floor, rotate crank bang on it some more. I blow air in and around the crank wash it out with mix gas. I'm now sure its not in the lower end. I have both clips in it now. I'm just looking for a better way, Is there tools for install and uninstall?

Work Saw Collector said:

I need a class on them clips uninstall install any and all tips. I sent 3 flying across the shop sounded like they were running mack 1 when they left the saw.:hmm3grin2orange: There has got to be a better way than the way I'm doing it, start one end and work it around with a carb tuning screw driver.

So I turn the saw upside down and bang it on the floor, rotate crank bang on it some more. I blow air in and around the crank wash it out with mix gas. I'm now sure its not in the lower end. I have both clips in it now. I'm just looking for a better way, Is there tools for install and uninstall?

Click to expand...

Stihl has the tool to install them, there are different sizes for the different diameters of wrist pin clips. They are somewhat expensive but worth the money in my opinion. You won't damage the clip or lose it. The part numbers are in the service manuals for each saw, some saws use the same size. It helps to have someone show you how to use it the first time. As for removing them I use a sharp awl, small screwdriver and needle nose pliers, I don't reuse them so I don't care if they get damaged.

http://www.arboristsite.com/chainsaw/184535.htm

More info on wrist pin clips.

The head of an aluminum nail just smaller than pin size often works well, or better yet make tool out of copper rod.

You can turn the rod by chucking it in a drill and using a flat file, turn the end so it fits inside the wrist pin hole, then step it up to wrist pin dia, with remaing original rod a bit bigger than the pin.

I am not an expert, but I have done quite a few.
I assume you are talking about the C shaped clips and not the G shaped clips.
I use a small screwdriver with a groove ground into the blade as close as i can get it to one side.
Hook the clip and roll it into the hole and push it around in there until it seats in the groove.
There are tapered tubes specifically made for this as well.
I still also use an unsharpened #2 pencil to push the clips around.The single best tip i have is to install the clips into the piston inside a large clear plastic bag.
I use Gallon baggies, but even larger is better if you have one.

Yep, take that carb screwdriver and cut a groove in the tip. I just hold my finger over the clip as I am working it in. I'm not bragging, but I don't think I have ever lost a single clip doing it this way. I have had them pop out, but the finger keeps their altitude to a minimum and their recapture uneventful.

Take one of the little stihl tuning screwdrvers and file a v notch into it. It works like a charm. Mine is about the same as the one below but has a smaller notch and the notch is off center.

rags over the crankcase, before the cylinder is totally off. Keeps broken rings and other bits out of the crancase also.
but I like the plastic bag idea, that saves chasing them across the room also.

An o-ring pick and a miniature pair of needle nosed pliers works wonders. Havent lost any. Also put a nice glob of grease in there to hold it for you. It sticks in the grease!

Hi again,
Just to clarify, the screwdriver/pencil is only for C shaped clips, G shaped clips are gravy. Just grab the center wire with needle nosed pliers (as mentioned) and "wind" the spring into the hole. I wish all circlips were the G shape, but I imagine they cost $.0002 more to manufacture, and some committee
decided it isn't worth it. Plus, they don't require special tools.

Also, banging your saw on the floor is a sure sign that it is time for a break. I'm not saying I haven't done it.........

If you think that there is a circlip in the crankcase, run a magnet around in there, you'll find it. I would be really sure to check the balls in the bearings.

Be careful about substituting different style clips. On high revving saws (as well as other engines) the type of clip and how the opening is positioned relative to piston travel is critical. Most OEM high revving engines use a C clip and the opening should be in the 6 or 12 o'clock position. The clip must fit properly in the groove, the shape and size of the clip must match the shape and size of the groove. The C clip is harder to remove and install than other shapes/styles.

Many failures have been caused by the clip popping out at high rpm.