1974 70hp johnson choke solenoid

[Bob427]

ok found out today that my choke solenoid never completely turns off
the solenoid gets pretty hot
looking in my shop service manual i see that its controlled by the choke switch and a thermo sensor in the lower left corner of the clyinder head

i think the termo switch my be bad
the choke switch works perfect

is there any way to bypass the termo switch and just have the coke switch working

thanks Bob

 

[Daviet]

Re: 1974 70hp johnson choke solenoid

Are you sure the switch in the cylinder head is for the choke or is it a temp sender for an overheat alarm?
By looking at a parts breakdown the only sensor I see is for the overheat alarm.

 

[Bob427]

Re: 1974 70hp johnson choke solenoid

the over heat alarm is located in the top right by the t sat
this motor has a sensor also located in the bottom left of the head
its part# 0384088 look on the cylinder and crankcase parts page

Bob

 

[ezeke]

Re: 1974 70hp johnson choke solenoid

Most of the automatic chokes were rewired and the automatic chokes disabled subject to a service bulletin issued in 1974. In some cases they were rewired by those unaware of the problems.

If there were ever an understated problem, this was it; after this none of the newer motors had this feature.

 

[Bob427]

Re: 1974 70hp johnson choke solenoid

thats just what i went out and did minus the jumper

thank you for info and posted page

Bob