Originally Posted by uny1965
hi all, took my mariner 25hp 2 stroke for its first outing last weekend.
used it on the back of my aerotec 380 and it really flew.
great weather and a great weekend
my question is... (as previous thread) when i came to flush on single sided flush muff, the water from the tell tale was barely noticeable and what little water did come out was very hot.
am i doing something wrong or do i buy a set of double sided muffs or maybe a collapsible bucket i can throw in my camper for flushing when on the campsite.
i also read somewhere that these engines dont like flush muffs and when flushing you may have to block off certain outlets with gaffer tape.
any ideas would be much appreciated.
btw tell tale was strong when flat out but trickled when in neutral out at sea.
many thanks in advance
Hi Uny, sounds like I have similar issues! Recently bought an old 15hp selva, tried in the bin and wasnt really pumping water, fitted a new impeller and bought some cheap single sided flush muffs... fired up today and just a trickle from the 2 telltales. Whilst I was replacing the impeller I had the hose on the water pipes so I know the passage ways are clear.. I found very difficult to get the muffs to seal so i think half the problem is not enough water getting to the impeller.. will have to wait till tuesday and I can try it in the bin again when its been emptied!! Bit reluctant to take it somewhere to try as its lots of work loading up, blowing up sib to find engine not running properly!previous owner said pumped much better when flat out and where the inlets are located I can see that there would be quite a bit of pressure generated by forward motion....however previous owner also told me it had a thermostat..which it definitely doesnt!
if the bin test is an improvement may have to just bite the bullet and go try it... I would think if you had a whole day out without problems yours may be ok??