SRV rebuild complete. Snow gone. Now what? - Snowmobile Forum: Your #1 Snowmobile Forum

baytonemus · 03-15-2012, 11:23 PM

Sometime tomorrow I'll have the last few remaining parts put back on the SRV I've been rebuilding for months. I rebuilt the motor, carb, fuel pump, steering, suspension, and made major repairs to the chasis. I disassembled and/or cleaned everything else. I can't tell you how much I appreciate all of the help I've received from folks on this forum, especially yamadad4. Amazing!

Now the question is, should I start it up? It's so warm here that we're setting temperature records every day. Tomorrow will be the earliest we've reached 70 degrees since they started keeping records. Though it's not impossible that we could get a snow storm and have one last chance to ride, it's getting pretty unlikely.

How warm is too warm to run the motor? I'll have to run it long enough to get the oil pump bled out. Also, should I run a gallon of mixed fuel while I'm bleeding it?

I suppose I could just fog it and put it away, but would that leave the lower part of the motor too dry?

Thanks.

SRX 700 · 03-16-2012, 07:27 PM

Make sure you coat parts in the top end with mineral oil when you were putting it back together. Start it up to bleed oil pump and then fog it. Let it cool down and recheck torque on heads. Wait until next winter to break it in when you have a chance to ride it.

baytonemus · 03-16-2012, 11:31 PM

Thanks for your reply. How long will it take to get that pump bled? And what about running some mixed fuel during that process?

**BC_Dan** · 03-17-2012, 02:08 AM

I would run mixed fuel, just to make sure the oil pump is working properly. You may foul some plugs, but it won't hurt the engine to over-oil it for a bit. It sucks that you have all this work and have no snow to play on. Come on over, we have plenty

yamadad4 · 03-17-2012, 06:23 AM

you wont hurt anything firing it up in warmer temps, it just may run a bit boggy or rich.

did you gravity bleed the oil system using the bleed screw on the pump? how much air is evident in the lines?

if you used lots of 2 stroke oil on all the internals during assembly, you should have plenty of oil to protect the parts on start up.

i would simply fire it up and manually pull the oil pump cable to wide open and watch the oil lines for bubbles. an extra hand and eyes can be helpful, but with some ingenuity you can do this solo.

be sure and bring the engine up to temp. (shut it down if its not oiling) feel the output of the exhaust gasses with your hand at the exit of the pipe.

you can actually heat cycle the engine a few times to get a jump on the break-in process. works best if you can elevate the rear and get some rpms.

baytonemus · 03-17-2012, 11:36 PM

Never got an email notification on your last post, ydad4, so I didn't see this until just now. I did start it up and bleed it this afternoon. I replaced all oil and fuel lines so as to how much air was evident, everything was completely dry. It bled out easily enough, but it's too bad they didn't put that bleed screw in a more inconvenient place. I had a 6" Phillips drill bit taped onto a 1/4" nut driver with the screw taped onto the end of it. Silly.

I decided to mix a couple gallons at 32:1 just to be safe. I'm not going to fog it yet, though, just in case...

And, hey, BC_Dan, I'm on my way to Oregon. It should only cost me $800 or $900 to get there and back. Actually, I guess it will only be half that much because I doubt my wife will take me back afterwards. Can I sleep on your couch?