Engine noise / vibration Yamaha 2-stroke 200 HP

[bart.willemsen]

Ratteling noise with lu deinstalled

Hi, followed your advice and de installed te lu.

Yamaha 2-stroke 200 HP 1999

Noise is still avaliable ( ref youtube) link. Anyone expirience with simulair noise ?

https://youtu.be/5tg9R0kXHnM

[bart.willemsen]

Noise finnaly found, engine stall forever

After a day on the water analysing the noise, tysted special oil addition, spedding over 60mph, 5500 rpm max, we went out the water. Before we could run the boat on the trailer it stalled with a terrible metal noise. At home took of the Coweling....... The Flywheel was lose. some furhet inspection learned the crankshaft was broken. end of story (unless somby got one 2nd hand avaliabe).

Disassambeld the complete engine and found a connection rod with to much space 0,6mm and even more.....

Anyone soare oarts?

[99yam40]

After a day on the water analysing the noise, tysted special oil addition, spedding over 60mph, 5500 rpm max, we went out the water. Before we could run the boat on the trailer it stalled with a terrible metal noise. At home took of the Coweling....... The Flywheel was lose. some furhet inspection learned the crankshaft was broken. end of story (unless somby got one 2nd hand avaliabe).

Disassambeld the complete engine and found a connection rod with to much space 0,6mm and even more.....

Anyone soare oarts?

sad to hear this,
but what is soare oart?

[pstephens46]

I'll take a guess - spare parts

[pstephens46]

Hi, followed your advice and de installed te lu.

Yamaha 2-stroke 200 HP 1999

Noise is still avaliable ( ref youtube) link. Anyone expirience with simulair noise ?

https://youtu.be/5tg9R0kXHnM

I wonder what "te lu" referred to?

[dray0151]

I wonder what "te lu" referred to?

Maybe lower unit?????? lu??????

[99yam40]

My guess is "the lower unit"
dang this if fun
guessing what people type

where was the slack at,
crank end or piston

seems the wooden dowel should have worked finding the looseness of the rod, not the flywheel

[pstephens46]

By George......

[dray0151]

Great Scott we have nothing better to do on a Sunday afternoon ????? I don't.

[pstephens46]

My guess is "the lower unit"
dang this if fun
guessing what people type

where was the slack at,
crank end or piston

seems the wooden dowel should have worked finding the looseness of the rod, not the flywheel

Wonder if flywheel was "loose" only because crank snapped? Something jammed it.

Be interesting to see all the bits and pieces.