1978 Johnson 9.9 service manual?

Undersquare

Cadet
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Jun 25, 2020
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Anyone got a pdf of service manual for 1978 Johnson 9.9hp. My model number is 10rl78m.
Thanks.
 

oldboat1

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Apr 3, 2002
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Search eBay. Probably $40 or so. Maybe a parts catalogue would do for a little less $$.
 
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Jul 15, 2020
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Hello experts.
Did Evinrude change fuel pump models in the 1983 35 HP motors? I notice there are two fuel pumps available, one with a single vacuum connection, the other with two vacuum connections. Was this done to avoid WOT fuel starvation?
 

jbcurt00

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Oct 25, 2011
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.
Did Evinrude change fuel pump models in the 1983 35 HP motors? I notice there are two fuel pumps available, one with a single vacuum connection, the other with two vacuum connections. Was this done to avoid WOT fuel starvation?

This is considered a hijack, start a topic about your motor.
 
Joined
Jul 15, 2020
Messages
13
I rebuilt a 1983 Evinrude 35 hp motor from the ground up meticulously.
The engine runs great except at WOT at 4500-4800 RPM when it starts to starve for gas and surges.
Squeezing the fuel bulb during that episode eliminates the surging.
After some research, I noticed some fuel pumps have a single vacuum connection and another for that time period has two vacuum connections. So, my question is did Evinrude make a change during the early 80s to correct a fuel delivery problem with the pumps?
 

oldboat1

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A string of posts is called a thread. When told to start a topic, you are being told to start a thread of your own.
 
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