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I managed to find a (HANDEL, FLYWHEEL LOCKING) on Ebay, it seems to be a hard tool to acquire. (NSN 5120-01-415-8266) (Yanmar 114250-25101) I'm going to wait till I receive this tool to progress on the engine. Thanks

I asked my brother about removing the pitting by using valve grinding compound. He said it will probably mess up the seal, I'm going to order new valves for it. I took a closer look at crankshaft and fly wheel, I don't think ill be able to remove it with out the flywheel locking tool. I'm just...

I was just wondering if Rusty meant that filters should be changed sooner than what TM/Manual specified.

Today I checked valve surface the exhaust valve surface is pitted, can this be lapped out with grinding compund, or do I need new valve? I have not honed cylinder yet I decided that I need to remove the crankshaft and fly wheel, I don't want to damage it or get contaminated liquids on it...

What do you define as regular basis? I've been watch videos on how to use ball hone, ill hone it tommrow if I can. Sent from my SM-G935P using Tapatalk

I pulled valves off of cylinder head, I noticed that the intake valve has a crap ton of carbon/soot in it. ​Edit: Probably unburned fuel from low compression. Intake Exhaust

Cleaner now, might need another cleaning after looking at picture. I ended up using a screw driver in drill having the handle warped in a towel, soaked the first half in carb cleaner. I did the after using a towel by hand kinda got tried of hitting my hand on studs. I did notice some really good...

Im no mechanic, but I plan to wet a towel in carb cleaner and wipe cylinder Sent from my SM-G935P using Tapatalk

I'm trying to understand what was causing the issue while engine was running at load. Right now I'm assuming it was the bore having scuffing marks and being glazed causing the rings not able to form a complete seal. I received the bore hone, going to clean the cylinder out and get it perfectly...

I cleaned the piston, do they make gloves that hold up to carb cleaner? I realize that I need to clean under 1st ring, I ran out of cleaner. I do see light vertical scoring on piston sides. Hone should be here tomorrow at some point, the rest will arrive later during the week.

Thanks Ill clean piston with carb cleaner and a scotch brite pad. I order --Yanmar L70 L70AE L70EE Replacement Piston Ring Set 714870-22500 --Yanmar L70 L70AE Complete Repair Gasket Set --Brush Research FLEX-HONE Cylinder Hone, GB Series, Silicon Carbide Abrasive, 3-1/4" (83 mm) Diameter, 240...

so i should rehone, new rings and, valve job. am i missing any thing Sent from my SM-G935P using Tapatalk

I have the Service Manual Am I looking for end gap ?

Ok, the gap is .025 inch or .635mm

Piston pulled, rings move around freely side to side. Piston took a lot of force to pull out of cylinder. Does the rings look bad? https://youtu.be/C0d5smI8uGY https://youtu.be/sg73m6ZFG14

I pulled PMA today, bolts that attach to stator are 1/4-20 by 2" use grade 8 it takes some serious force to initially break lose. I had to have some one put a wrench on fly wheel nut to prevent engine from turning. On the second picture it looks like the stator may have rubbed the side of rotor...

What kind of cleaner degreaser should I use to clean engine parts? Probably going to soak the parts for awhile once i get it apart. I am going to be pulling the engine completely apart, as for honing the cylinder what size hone do I need piston is 78mm. Thanks

I pulled the head today, the rust on piston is from head stud. I removed the head gasket also. Going to pick up puller from auto store tomorrow and proceed further. Thanks

I want to get this machine working like it should, Ive been looking threw on how to replace rings. The only thing that has me wondering is what size/style puller do I need for the alternator. Edit: found post taking about pulling alternator going to order this on amazon