Hello Paul
"I find mine difficult to start when cold. Warm starts are instant."
If you are using mogas and have been flying a while, you may want to check for
"Carb Snot".
I plan on using a 914 but have no Rotax experience.
I have a 1988 BMW R-100GS that uses the same carbs, and the first thing to give
me trouble is hard cold starts.
The enriching circuit seems susceptible to first get clogged. Every few years
needs
cleaning out even though i use stabil and always leave tank full.
A few times on trips it got plenty cold out and the bike would not start, even
though in less than plenty cold it started just fine. I can pull an intake tube
off
and give it a good old fashion hand choking and it usual cranks right up if i am
in a hurry, or just pull the carbs and clean out.
I did read on the Rotax 914 service bulletin for extreme cold you may want to do
some hocus pokus to make cold starts easier, but when temp rises you need to
switch
back.
For the most part the yellowish "Snot" seems to develop in the enriching circuit
passages that are on the removable float bowl.
It is good practice to always replace the float bowl gaskets. If you don't they
seem to seep/weep just enough to stain the bowl and perhaps your shoes. Probably
worst on the bike than the europa.
On the bike don't ever run as high a % of power for anywhere near as long as the
914 will. Thus i never saw a detectable leanness, but just a bit of "Snot" is
usual
found elsewhere, where it could cause lean at high power settings.
Ron Parigoris
|