Posted By: LeonSulak
2 Rookie Questions. - 08/13/16 10:39 PM
Yamaha HPDI 175 hp
If the previous owner used premium, do I need to still?
He had a fabric cover on the cowling, does it need to be removed while operating the boat to prevent overheating?
Thanks in advance
Posted By: toddfish
Re: 2 Rookie Questions. - 08/13/16 10:57 PM
I had a boat previously that I bought preowned, and the previous owner also used premium. My mechanic recommended the mid grade and I switched with no problems. Mid grade was also recommended to me for my new boat.
Posted By: Donald Harper
Re: 2 Rookie Questions. - 08/13/16 11:12 PM
If the cover is vented then you can run with it on. If it is a full cover with no mesh vents on the sides and front then you must remove it.
Posted By: Bobby Milam
Re: 2 Rookie Questions. - 08/14/16 12:20 AM
Do you have a manual? See what it recommends for gas.
Posted By: Ken A.
Re: 2 Rookie Questions. - 08/14/16 04:07 PM
Yamahas do not require premium fuel. You would be better served to use ethanol free if you can tho.