how to find tdc

clowe · 05-05-2009, 04:16 AM

what is a easy way or method/indicator to find top dead center on overhead valves for adjustment?

k2skier · 05-05-2009, 09:54 AM

If it's a B&S, they set the valves a 1/4" past TDC. I use a screw driver and eyeball it, it doesn't have to be exact, just very close.

Joezilla64 · 05-16-2009, 11:21 AM

Take the spark plug out and look at the piston.

v1_0 · 07-01-2009, 09:05 AM

Quote:

Originally Posted by clowe

what is a easy way or method/indicator to find top dead center on overhead valves for adjustment?

I pull the spark plugs out, get an brand new "regular" pencil (not a carpenter's type, etc) and stick it where the spark plug goes. [Brand new = not sharpened. If I happen to have a dowel of the same size, that is the #1 choice] Then I slowly turn the engine over, maintaining a little pressure on the pencil. If you watch the pencil, you will see it moving in and out as it is pushed by the piston. You can find TDC exactly using this.

Now, you don't want to put too much pressure on anything - it would be bad to break part of the pencil off in the cylinder...

05-05-2009, 04:16 AM	#1 (permalink)
clowe Registered User Join Date: Dec 2008 Posts: 11 OS: xp	how to find tdc what is a easy way or method/indicator to find top dead center on overhead valves for adjustment?

05-05-2009, 09:54 AM	#2 (permalink)
k2skier Registered User Join Date: Sep 2008 Location: Oregon Posts: 313 OS: XP Home-SP3 My System	Re: how to find tdc If it's a B&S, they set the valves a 1/4" past TDC. I use a screw driver and eyeball it, it doesn't have to be exact, just very close.

05-16-2009, 11:21 AM	#3 (permalink)
Joezilla64 Registered User Join Date: May 2009 Posts: 2 OS: xp	Re: how to find tdc Take the spark plug out and look at the piston.