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Followup To
Question - bill thats agood idea thanks but Im having trouble removing the screws on the cam bearing side plates they wont budge w/large screwdriver any ideas would be apprciated.follup to answer below.thanks again
my 1971 honda 175 4-stroke has been sittin up for 5years the piston was frozen tried to free it w/penetrating oil and moving wheel w/trans ingaged to no avail.Im trying to remove the head but I cant get to timing chain master link to remove head.$ is an issue! HELP@#$%>*
Answer -
Joel, stuck pistons are no fun to repair and gets expensive in the long run. Try NOT to beat on the piston with a hammer and wood block, if possible. On 305s I found I could use a steering wheel puller to place it over the studs and then use the center bolt to push the pistons out.
The stud spacing on the smaller engines may be too close to do this, but you get the idea. Maybe make up a plate with some stud holes drilled in correctly and weld a nut to the center hole to make a pusher plate out of it.
If you can't get see the masterlink with a flashlight and a long bent scribe tip to pry it loose, I would suggest that you remove both end cam bearing covers on the cylinder head. That should allow the cam to drop down enough to get the chain off the sprocket. Then you can wiggle out the camshaft and remove the head or at least it will allow the chain to drop down off the bottom sprocket, so you can work it around enough to access the master link again.
Bill Silver
www.vintagehonda.com
AnswerJoel, the trick to get those screws loosened, is to use an impact driver tool, the kind you hit with a hammer. You must have one for working on motorcycles. Most m/c shops have them in stock. I always get a longer #3 bit and then use it to smack the screw heads directly with a hammer a few times to help jar the threads loose. Sometimes, that is all you need to get them to loosen up, but an impact driver makes it easier, too.
Bill Silver
