Yesterday I finally got back up to the lake for a little more work on the AR210. I gave each motor a complete oil change, which in the MR1 involves:
- Siphon as much oil as possible out of the oil reservoir
- With the bow tilted up as much as possible, removing the 13mm bolt on the bottom of the reduction gear box, which releases the remaining oil from the motor
- Filter change
I debated how to catch the oil from the oil release hole--there just isn't much room there to work with a pan. I opted to just let it release into the bilge and then siphon it out of the bilge/use paper towels/simple green and then a power wash. I did unsnap the bilge pump and moved it out of the way so as to not soak it with oil.
Oil was milky in both motors (less on the starboard motor), and even a few cups of water came out of the port motor. I am going to do at least one more oil change on both motors, and possibly two more on the port motor. But for now, good enough to attempt to fire up.
Put in the lanyard, a set of spark plugs, and the starboard motor fired right up and idled smooth. I let it warm up, and then revved it to 7k. Perfect.
The port engine took a bit longer and a few tries. I know cylinder #1 had oily water in it previously, and was probably soaking the plug. However, a few more attempts and it fired up too. I let it idle a while, and now it seems to be running smoothly.
Both motors fire right up now upon turn of the key.
Having worked with MR1 motors that sat for a long period of time, I am pretty shocked there are no stuck valves or seized rings. For the price I paid for the boat, I was fully prepared to rebuild both motors. A bonus for sure.
I will also run Yamaha Ring Free through the first tank of fuel. That stuff is great.
Next up:
- One more complete oil change in both motors
- A good powerwash using simple green and some tilex on the seats
- Replacement of the rear scupper with a stainless unit
- Remove the pump cleanout plugs (they are stuck) and replace with new units
- New pump nozzles (mine are broken)
- New battery
- Replace the broken transducer and speedometer pickup
- A few other odds and ends
- Buy a cover (got to research this)
-Greg