Suzuki DT40

Doesn't miss a beat – Now 7 years old, my DT40 hasn't missed a beat. Serviced every two years just fill it up and go. Quicksilver oil has worked fine. My DT40 starts first time on cold starts at the ramp, just give it revs and choke. Not the most fuel efficient or quiet motor but it is a two-stoke and a good option if you are after something cost-effective and reliable. Saying that tho, I would always recommend a 4-stroke over a two stroke especially at 40HP and above due to efficiency and convenience with refuelling.

Maintain and be rewarded – Had some teething trouble with this old bird, poor maintence by previous owners the cause. Keep the fuel fresh and clean, use fuel stabilizer and quality two stroke. Clean your fuel filter regularly and check for debris and water in it. Clean your carb out thoroughly. Remove the carb, float bowl, float, fuel inlet valve, lower main jet, top idle jet and air screw. Blast it out with compressed air. Check the small holes on the jets for debris - the usual cause of idle problems.

Reassemble with the air screw 1.75 turns out and use the idle screw to get revs right. Mess about with small adjustments whilst the motor is running.

Renew plugs regularly and keep leads clean and sprayed with water repellant.

Keep gear oil clean and watch for any sign of creamyness - water getting into oil. Change oil seal if this happens.

Oh yes, and always make sure it is pumping water. Flush engine with fresh water after use if its going to be laid up. The stainless steel pump housing makes that a bit less of an issue, bit its good to keep things sweet.

I reckon it is one of the simplest, hard working, heavy duty engines around and easily puts my 15' cathedral hull seahog on the plane at one third throttle with 3 people in. I dont see the point in running at full throttle as that just uses the juice up too quick. It is very economical run just on the plane. Inexpensive, easy maintenance lack of web info