checking timing
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Cruiser
Joined: Sep 2008
Posts: 151
Likes: 1
From: ohio
checking timing
well my haynes manuel doesnt show the markings that are on my crank i have an F and a straight line then i have a R and a straight line then i have F:T can anyone shed some light on this i think the f and two dots and t is top dead center front cylinder im assuming the f and r should be when the thing fires BUTT not for shure
There is only one way IMO to determine what is the front cylinder TDC mark. That is to position the front cyl at TDC and look in the timing hole.
In my experience it is foolish to rely on what is in any book or on anyone else's flywheel - unless you are absolutely certain that yours [and theirs too] has never been changed.
Plugs out, rear wheel off the ground, 4th gear, rotate the rear wheel and watch in the plug hole for the piston to come up to the top. Then look at the mark in the timing hole. A bit more tedious than it sounds.
In my experience it is foolish to rely on what is in any book or on anyone else's flywheel - unless you are absolutely certain that yours [and theirs too] has never been changed.
Plugs out, rear wheel off the ground, 4th gear, rotate the rear wheel and watch in the plug hole for the piston to come up to the top. Then look at the mark in the timing hole. A bit more tedious than it sounds.
I do not recall what year is your bike. My manual covers 1979 to 1985 and there are two versions of timing marks there. For example, for 1980 there is a bar and a drilled hole. For some the drilled hole is TDC and the bar is ATM; for others it is exactly the opposite.
Remind us what year is your bike. If someone has a manual you could use that as a guide as to what to look for. It is really helpful to have both a factory manual and a parts book for your model. These are available thru HD dealers, eBay, J&P Cycles, etc.
Last edited by IronMick; Apr 15, 2009 at 10:30 PM.
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Cruiser
Joined: Sep 2008
Posts: 151
Likes: 1
From: ohio
ok got top dead center then checked my points they were not open i adjusted the backing plate to where they opened got good spark and fuel still wont start pops through carb on the cam lobs for the points the short skinny lob is for the front cylider correct
Cruiser
Joined: Feb 2008
Posts: 118
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From: Athens, GA
Here's how HD describes the process.
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Cruiser
Joined: Sep 2008
Posts: 151
Likes: 1
From: ohio
thanks for the info ga i did some investigating online about my timing marks i found that a S&S stroker crank has the same timing marks as mine does they still say to set firing 40 degrees befor tdc
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Cruiser
Joined: Feb 2008
Posts: 118
Likes: 0
From: Athens, GA
Congratulations on the stroker find. 40° it is then. - I was under the impression that strokers were supposed to be timed in the 30something° BTDC range, but have no practical experience. S+S probably has documentation for your wheels on-line. Can you see any identifying marks to give a clue as to the stroke?
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Cruiser
Joined: Feb 2008
Posts: 118
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From: Athens, GA
Got Fuel? Too much? Not enough? And don't forget spark at the right time. Without anything else to go on, I'll make a WAG and say it's fuel related. Maybe related to a float adjustment/sticking float or maybe crap in the gas from the tank, now in the carb. Again, only a WAG.