Should I buy a timing light?

kalebsheridan

Petty Officer 1st Class
Joined
Aug 14, 2023
Messages
205
Hey everyone,
So recently I was attempting to tune my motor according to my clymer manual. I hooked up a cheap induction tack not knowing that forces use a double spark. My tach was reading about 1500-1600 in gear in the water. I didn't realize that I should half that number. Due to this I adjusted the idle screw on the throttle tower thing to attempt to reach the 750 rpm spec and it idled terribly (shocker). Well now I know that I was reading my tach wrong. Do I need to buy a timing light to reset my idle? Or should I just use my tach and adjust the idle back up to the appropriate number? Thanks!
 
Last edited:

Nordin

Commander
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Jun 12, 2010
Messages
2,592
A timing light is a very good tool to have in the tool box for service and troubleshooting but just to set the idle speed, no do not buy one for that reason.
Buy a cheap tiny tach or a analog tach gauge for the dashboard.
If you buy a timing light buy one with a pick up sender and not one that you connect inline with the spark plug boot and spark plug.
I prefer a good well known brand.
I have a Snap On that you can adjust and preadvance the timing.
Some timing lights has a built in tach function but I think they are pretty expensive.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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50,313
clymer manuals are junk. buy a used factory manual
 

kalebsheridan

Petty Officer 1st Class
Joined
Aug 14, 2023
Messages
205
Okay sweet! I may still pick one up just for the future, but hopefully I'm good now, like you said nordin. Yup all see about getting a shop manual. Just find one on eBay? Or are there PDF versions?
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
Joined
Jul 23, 2011
Messages
50,313
Okay sweet! I may still pick one up just for the future, but hopefully I'm good now, like you said nordin. Yup all see about getting a shop manual. Just find one on eBay? Or are there PDF versions?
there are no PDF versions due to copy right laws. look for a used one on evilbay
 
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