Out of date info

[chas451]

I'm tuning up my neighbors 1988 Johnson 70 HP outboard and he gave me the Clymer manual to use. Problem is the manual covers 1973 to 1987 motors. Seems to be a year short. Basically I want to do a link and sync on it. Does anyone think it would be OK to use the 1987 for this process?<br /><br />Thanks All<br />Chas

 

[lastout]

Re: Out of date info

my clymer covers 73' to 1990 and it does not seperate the years for a 70hp. i would assume by this that the instructions you have should cover your engine.

 

[chas451]

Re: Out of date info

Lastout<br />I did a timing pointer alignment and it was within 1/2 deg. Adjusted the throttle cam follower and checked the pickup timing and it's sitting at 10-12 deg ATDC, which is a lot. The Clymer manual calls for 4 deg ATDC for 1987 and on, but is TDC for all years prior to that. With only that one year being different and such a big discrepancy to start, it makes me nervous.<br />Chas

 

[lastout]

Re: Out of date info

my manual says for a 1988 70hp that full throttle spark advance should be 19 +/-1 BTDC and pick up throttle should be 1 +/-1 ATDC. now you know what clymer knows, good luck.