If the belt pulley is not turning (power off) and the clutch makes a noise it is probably the bearing in the clutch. With the clutch powered on the bearing doesn't spin so no noise.
I would remove the clutch and check the bearing.
Remove the deck belt
Engage and disengage the clutch
Does it still make the noise when disengaged?
Does the belt pulley stop spinning when the clutch is disengaged?
If the belt pulley keeps turning when the clutch is disengaged and make the scraping noise the bearing in the clutch is probably bad.
Most handheld 2 strokes have locating pins in the in the grooves to keep the rings from turning to where a ring end is in a port (bad). And the ends are tapered to fit the pins. I have never had to file rings. OEM or AM I just put new rings on the piston and install. Never had a problem. Not...
Check the tank for rust. If it has flakey rust the Houston we have a problem.
The tubes are prone to cracking and are readily available.
Did you replace the fuel pump diaphragm?
Never seen a mechanical ACR on a multi cylinder 4 stroke bike. Honda did have one on the XL500S. It was a 500cc 4 stroke thumper that pretty much killed off the 2 strokes used in flat track racing. Back in the heyday of big single racing 2 strokes it was common to have a compression release...
Anybody who had a big 2 stroke single knew how to "straight leg" start a bike. Work the engine around to the compression stroke. Shove yourself up high enough to extend the leg on the kick start out straight and drop your body weight down on the straight leg. Trying to start it sitting on the...
Get a couple small zip ties and cut pieces the same length as the holes are deep. Put a piece in each hole and install the carb. Zip ties will fix the wallowed out plastic threads.
The cheap HF compression tester doesn't have the Schrader valves at the end of the hose. You can't use it for small engines or motorcycle engines
It it ain't like this it ain't gonna work
I have a customer with an RT8. Parts are getting hard to find for these units. I rebuilt the tine drive about 10 years ago. Most of those parts are NLA now. Good luck finding parts.
The commercial Z mowers and the bigger JD and Kubota tractor style mowers and others use Marbain steel blades. There is a big difference between regular and Marbain blades
https://www.fisherbarton.com/products/turf-care/marbain/
Many times when an engine has been loose the bolt holes in the aluminum gets wallowed out a bit just tightening with locktite won't keep them tight. Some engines have enough material I can just drill and tap to the next size. Some I put in inserts and use locktite. If your engine comes loose...
You should have .004-.008 endplay of the crankshaft and the block. You place some kind of small pry bar or screwdriver between the block and flywheel and pry up just enough to bias the crank and flywheel up that few thousandths.
I remove those by installing a longer bolt that bottoms out in the crank threads then use a pry bar to bias up the flywheel and hit the bolt with the air hammer.
If you used a lot of oil when you put it together that can cause a high compression issue.
There are lots of Asian automotive compression testers that use 2 hoses the first connects to the guage and has the Schrader valve and then a second hose that adapts the plug thread. Not good for small...
I wonder who the rocket scientists were that thought putting the sediment bowl where you can't even come close to reaching it leat alone removing the bowl. Full of bad gas. I guess I will have to pull the tank to get to it.
Thanks for the links. I am hoping that it is just the points. He wants this for a show on the 8th. The guys who brings me all these relics is a bit of a wheeler dealer. This thing is rare enough he wants to keep it. He just sold 5 pieces. 2 of them were Struck Big Job tractors. That leaves him...
1965 Work Bird with Wisconsin engine. Been sitting for years. Controls rusted up. No spark. Gas left in carb. Plus the 50 other things i will find when I dig into it
I always try to get the highest capacity battery I can for any mower. As lead acid batteries age they lose capacity. The higher the capacity, usually listed as CCA, the longer the battery will last.
Interesting fact. I take a battery tester with me that will measure actual CCA when I go to...
On a lot of new "stuff" without being able to scan for error codes you will never be able to diagnose and properly troubleshoot it.
Been working on stuff for half a century and made a living carrying a toolbox for over 40 of it. The problem is usually not the scanner but people trying to out...
Normally you can just twist the belt onto the the PTO pulley. If it is too tight to to get on the pulley it sounds like something is wrong with the deck. I don't think you have a switch problem.
Put it all back together.
Start it up and engage PTO at full throttle. Does it kill engine?
If it does remove the deck belt from the PTO pulley.
Start engine and engage PTO. Does engine stay running and PTO pulley spin?
If yes then you have a deck problem as long as there is no issue with...
We had a shop burn down a few years ago
https://www.whio.com/news/local/flames-have-engulfed-germantown-lawn-care-equipment-business/Q0La39LcEu8ZKUDvuMVSmK/
Had more than one new customer tell me they had equipment there and their equipment wasn't insured, only the building and tools not...
Don't put flyers in mailboxes. A guy who used to work on mowers before he got cancer was printing flyers and putting them in mailboxes. Got a visit from post office police and was given a mean letter.
Just a fun project. It was pulled out of a barn that was being cleaned out and was headed for the shredder. The town holds a farm day parade every year so I will drive it in that. Maybe I will use it to get the mail and call it my redneck golf cart. LOL
Almost finished with my trash picked little deere. New tires, carb, starter, seat, fuel pump, air filter, battery, labels and rattle can paint job. Steering gear and spindles were seized, brake was seized, mouse nest in engine cowl.
How to test a boat spark plug
Drive to the middle of the lake
Remove spark plugs
Carefully place them on the water
If they float they are good
If they sink they are bad