I have a 1988 50 HP Yamaha 50ESGJD jet tiller that has a blown powerhead (zero compression in middle cylinder) and I got a good deal on a fully dressed 1990 40 HP powerhead 40ETLD. I was wondering if I can literally just swap them out completely? The bottom seal between the two are the same part number therefore should bolt on together. The electrical connections are the same except the wire harness is a different part number. They are the same amount of pin numbers and do connect together. This is a tiller jet model and it appears the throttle and shift linkage are the same as well.
I know I am losing HP and the intake numbers are different therefore I do not think the carbs will interchange but I will check when I get them apart, if I get that far!
The main question is the wire harness. I know that is a big question but has anyone done this before? I will not roll the dice in frying the electrical components therefore asking the question here.
Thank you!
I know I am losing HP and the intake numbers are different therefore I do not think the carbs will interchange but I will check when I get them apart, if I get that far!
The main question is the wire harness. I know that is a big question but has anyone done this before? I will not roll the dice in frying the electrical components therefore asking the question here.
Thank you!