91 skidoo 617 oil system delete - Snowmobile Forum: Your #1 Snowmobile Forum

iripwhatigot · 02-09-2011, 11:57 AM

hey i'm new here and i own a 91 skidoo mach 1 617 and a yamaha gp440 and was wondering on about everthing i have ever owned i would remove the oil injection system and just run mixed. the yamaha was easy and i just need some help on the ski doo i already removed the pump and replaced with a aluminum cover and now i am wondering wat to do with the hoses going to the oil resivoir should i just take the hose that goes from the bottom of the motor and loop it to the top of the motor? cause my theory is that i own a 2 stroke quad and i never see any kind of vent anywhere in the crank case so.
And i just need a clarification on how to break in and starting a new motor for the first time and stock carb settings hope i gave enough info haha thank u.
DAN

**smallengineguy** · 02-10-2011, 06:34 AM

The Rotary valve needs 2 stroke oil to keep it lubricated as well. That's what the smaller tank is for.

iripwhatigot · 02-10-2011, 09:04 AM

So ur saying leave the tank hooked up just plug the line that was going to the pump?

**smallengineguy** · 02-12-2011, 05:59 PM

Correct.

iripwhatigot · 02-12-2011, 10:40 PM

Thank You

clarkracing81 · 01-03-2013, 11:27 PM

For the rotary valve are you saying to still add oil to the tank just plug line going to pump? I bought a 92 617 an the guy told me to mix the oil myself cuz he made a delete kit for the pump ..

**smallengineguy** · 01-04-2013, 03:18 AM

Once that rotary tank is full, it should stay that way. It's just a reserve system for the rotary and doesn't use any.