1999 M600 has been sitting for 5 years - what to do?

jamminbmx · 22-02-2020, 03:09 PM

Sooooo...if I ever meet any of you lot in a pub then beers are on me!!!

- air filter had no mice but a family of burrowing bugs who had made a little house on the clean side. Never seen them before...guessing Italian

- lower belt was so loose I could pop it off the roller with no effort at all...would have been a wrecked engine for sure!!!!

- fuel filter was leaking!!! Never seen that before...would have burnt my balls off for sure!

Now I’ve saved a grand on an engine rebuild feel better about buying belts and filters etc! Wil take out plugs and add oil then turn it over as advised.

Anyone know what the tap connected to the hoses that run from the right side crank case does? Look like oil hoses. Not sure how to attach a photo from my phone.

https://drive.google.com/open?id=1GD...tVfpxjaNcZwYsq

Darkness · 22-02-2020, 03:14 PM

Is it the spur line to the carb bowl heaters?

Mr Gazza · 22-02-2020, 04:02 PM

I think Darkness has nailed it, it must be the carb warmer tap.
It's a diverter valve, so oil always goes to the oil cooler whichever tap position is selected (or back to the engine if there is no oil cooler). The tap lever points in the direction of flow.
It diverts (warm) engine oil into galleries in the float bowls to help combat carb icing. I had one on my carburated M900 and it used to do the trick for me, but the general feeling is that they don't work. (I disagree).
I have only seen them fitted to Monsters with oil coolers, but I believe that they can be fitted without an oil cooler.. I don't think the 600s had coolers? but this set up was available as a kit I think. The tap sits on the right just below the frame rail and above the front belt cover, if I recall.
I couldn't find a picture of one fitted, but this gives the general idea.

22-02-2020, 03:09 PM	#1
jamminbmx Registered User Join Date: Mar 2016 Location: oxford Bike: M600 Posts: 131	Sooooo...if I ever meet any of you lot in a pub then beers are on me!!! - air filter had no mice but a family of burrowing bugs who had made a little house on the clean side. Never seen them before...guessing Italian - lower belt was so loose I could pop it off the roller with no effort at all...would have been a wrecked engine for sure!!!! - fuel filter was leaking!!! Never seen that before...would have burnt my balls off for sure! Now I’ve saved a grand on an engine rebuild feel better about buying belts and filters etc! Wil take out plugs and add oil then turn it over as advised. Anyone know what the tap connected to the hoses that run from the right side crank case does? Look like oil hoses. Not sure how to attach a photo from my phone. https://drive.google.com/open?id=1GD...tVfpxjaNcZwYsq Last edited by jamminbmx; 24-02-2020 at 11:30 AM..

22-02-2020, 03:14 PM	#2
Darkness . Join Date: May 2007 Location: Stockbridge Bike: M900 Posts: 1,984	Is it the spur line to the carb bowl heaters? __________________ Original and Best since 1993

22-02-2020, 04:02 PM	#3
Mr Gazza Lord of the Rings Join Date: May 2013 Location: Norwich Bike: M900sie Posts: 5,849	I think Darkness has nailed it, it must be the carb warmer tap. It's a diverter valve, so oil always goes to the oil cooler whichever tap position is selected (or back to the engine if there is no oil cooler). The tap lever points in the direction of flow. It diverts (warm) engine oil into galleries in the float bowls to help combat carb icing. I had one on my carburated M900 and it used to do the trick for me, but the general feeling is that they don't work. (I disagree). I have only seen them fitted to Monsters with oil coolers, but I believe that they can be fitted without an oil cooler.. I don't think the 600s had coolers? but this set up was available as a kit I think. The tap sits on the right just below the frame rail and above the front belt cover, if I recall. I couldn't find a picture of one fitted, but this gives the general idea. __________________