Every time I engage the blades on my Craftsman LT1500, the valve lash goes out of spec (loosens) and I get popping sounds. I adjust the engine to TDC, and re spec the lash, and tighten the lock screws down good. This happens within a minute of engaging the blades but no issues when not under load. Spindles seem to be fine and move freely. Intake and Exhaust rods don't seem to be bent either. I do have an aftermarket carb on there, could that be causing the issue? What else could be causing this and how could I diagnose/fix?
 
Craftsman Model # 247.288810
Briggs and Stratton Model 31c707 Type 3346 G2

Every time I engage the blades on my Craftsman LT1500, the valve lash goes out of spec (loosens) and I get popping sounds. I adjust the engine to TDC, and re spec the lash, and tighten the lock screws down good. This happens within a minute of engaging the blades but no issues when not under load. Spindles seem to be fine and move freely. Intake and Exhaust rods don't seem to be bent either. I do have an aftermarket carb on there, could that be causing the issue? What else could be causing this and how could I diagnose/fix?
 
Craftsman Model # 247.288810
Briggs and Stratton Model 31c707 Type 3346 G2

I just got this for $50 but not sure I got a deal . .it is a kipor 3000ti and I got it running but it has what I think is a rod knock.  Can anyone tell me what this knocking noise is?  I took the valve cover off and all seems ok but haven't gone any further.  Thanks!  Ok so I cant upload the video as its too large but it runs and idles but has a loud rhythmic banging noise.  Ideas?!

I'm attempting to resurrect a 1980s Honda FR500 rototiller with a Honda G200 engine. 
 
I've managed to get it running (poorly), but I'm currently stuck on a problem the internet hasn't been able to solve for me. 
 
While I'm able to get the engine started, the carburetor clogs fairly quickly. When I've opened the carburetor I've found gritty, sand-like particles inside. 
 
These particles are almost certainly residue from the gas tank (which had been full of stale gas for about 20 years). 
 
I tried to clean the gas tank by filling it with some pennies, and fresh gas, and shaking it all around. But that didn't do much. I doubt filling it with gravel and shaking it would clean it very well either. The residue is on there pretty good and it covers maybe 25% of the tank's surface. The gunk is a dark brown/green color and has a slimy appearance, with tendrils. 
 
I've tried acetone, too, but that didn't get all the gunk off. 
 
So my question is: Is there any foolproof way to 100%, immaculately clean the inside of a gas tank besides gravel, nuts and bolts, acetone or vinegar?
 
Thanks for any thoughts you might have. 
 
P.S. I'd like to simply avoid the issue by installing an in-line fuel filter, but the gap between the tank and the carburetor on the G200 engine is so small I'm not sure that's feasible. I'd have to use do a loop-the-loop on of the fuel line to make the filter fit, and I'm assuming that would cause problems? 

Good evening, 
 
My mower makes a weird sound and then shuts down. Any help would be highly appreciated. 
 
 
Thanks, 
 
[tube]https://www.youtube.com/watch?v=hPblF2D1Yy8[/tube]
 
 

I have a BS 5 horsepower. It's an older motor for 1975. I'm gonna make it a manual pull start.
Unable to find proper recoil starter assembly part number 390463
I'm looking for part number 299421 or substitute for that part.

I have a Poulan XT lawn tractor. The tractor will only start if jumped. I replaced the battery, starter solenoid and starter. Any input is welcome.

Murray 465306x8a.
Drive belt broke and have replaced .
I’m stuck on how the belt goes around the idlers.
I have manual diagrams but they only show the belt front to back and a picture of the idlers but no description or how the belt goes around the idler pulleys.
Also not sure , at this point, which side of the belt to place around the pulleys , not flat or grooved side but the actual belt left or right.
Thks for any help

Th