On a 1981 Evinrude E25RCIM motor there are three rubber water deflectors that are in the water passage under the cylinder head. One shop has told my friend that they are not needed. I said that they are absolutely needed and without the deflectors the motor will overheat. Who is correct?
Can anyone explain the engineering theory behind the fact that the current Yamaha 90 hp two stroke motor has a compression ratio of 5.76:1 in cylinder 1, a compression ratio of 5.67:1 in cylinder 2 and a compression ratio of 5.86:1 in cylinder 3. The 70 hp two stroke which is also a 3 cylinder...
It would be helpful for anyone who has a question about a Yamaha outboard to include the full model number, year and horsepower of your motor in your initial post. It would also be helpful if you include the country where the motor was originally sold. The United States and Canada have different...
In a 1981 Evinrude E25RCIM motor I would like to know the correct way to install new water deflectors that are in the block. I have removed the cylinder head and cylinder head cover. I removed the old deflectors and need to know how far in do the new water deflectors go. I also need to know the...
I have the the cylinder head off and I noticed that in the parts manual on the Cylinder & Crankcase page, item 10 is listed as DEFLECTOR, water passage part number 325911 which changes to 335603. The manual lists a quantity of 3. What exactly do these do and should I change them since I have the...
I have a 1948 Goodyear Sea Bee 5 hp model 025-3564 motor. I have been using the spark plug torque from a 1948 Johnson factory manual which is 20 ft-lbs. I know the Gale motors are different and I am wondering if anyone has a Gale manual which lists the spark plug torque for this motor.
Is there any advantage or disadvantage to using an "R" or resistor spark plug in the old Gale motors? I am aware of the fact that there will not be RFI produced when using the resistor spark plugs but I vaguely remember that you had enhanced performance from the resistor spark plugs.
I have a 1948 Goodyear 5 hp model 025-3564 motor. I know that in 1948 the Johnson, Evinrude and Gale were all different motors. At the time OMC believed that competition was good for product development. In 1948, which of these 3 was the most advanced and most reliable motor.
I have a Goodyear Sea Bee 5 hp model 025-3564 which was made in 1948. It currently has Champion J6J spark plugs. Is there a replacement spark plug that has end terminals that unscrew? Is there a parts manual on line for this motor? Does anyone know the part number for the impeller?
What is the best way to remove the 2 anodes that are located in the crankcase of the 70 hp motor. I have removed the anode cover and the anode grommet. Do I twist or pull out the anode?
In the 1962 Evinrude 75hp model 50931A Starflite Electric Shift parts manual there is a listing for a Delco-Remy igition coil with a part number of 378231. Does anyone know what the Delco part number is for this ignition coil?
