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I picked up a 2008 Summit 800R with the motor out and I replaced the E and S modules and braced it. I need some pics of a Summit with the covers off, especially on the top of the motor behind the can and behind the carbs to try to figure out the routing of the fuel lines, sensor wires, cables...

I've got a brakes issue hopefully someone can help. I extended my brake line 10" to put a 8" riser on my 1997 Summit. Now my brakes start cooking when I'm running down the trail or playing in the powder, it's like my brake fluid is boiling. If i crack the bleeder it will loosen up for 5-10...

I just put a 151 x 2" track on my 1997 Summit 670 (great upgrade). What are some clutching tips as far as weights, spring, secondary, helix etc? I'm riding mainly sea level with some mountains up here in Alaska. My machine has HAC system still and engine is basically stock.

The tach is not working on the '97 summit 670 that I purchased this summer. I have the manual and if I'm reading the wiring diagram correctly the tachometer is fed by the voltage regulator? So far I've tested the wires down from the cowling to the tub- I even replaced that section with a spare...

So I decided to put risers on my 1997 Summit 670. My friend was really generous and gave me a set of 6-8" Rox adjustable risers and t bar mount. They are too wide for my stock bars and the clamps hit on the bends in the bar. I have a set of FLY aluminum mountain type bars with 3" rise in them...

Was wondering what bend and which bar is your favorite? I have a 6-8" Rox riser on my Summit 670 and wondering if an RSI straight bar 10* setback or backcountry bend would be best?

I wrecked my 1996 Summit 670 last winter and just got around to fixing it this week. I noticed oil in my carburetor when I pulled the airbox, I pulled the carbs and found the crank case is full of oil and my reservoir is almost empty. Has anyone had this problem? Is it the inner crank seals...

My 1996 Summit 670 has been starting good when its cold but once warmed up its not starting. I rode it for the first time yesterday and it ripped down the trail. I shut it off when we came to a downhill overflow area and after pulling it about 200 times it wouldn't start. It has spark, I put new...

I would have updated my old thread but it's buried now. I've been tuning a 1996 Summit 670 that has twin pipes, no HAC, and some other upgrades. Back in December I went through the rotary valve gear so the engine is fresh. It's been fun getting the jetting right so today I added Powerjets. The...

I was wondering if the main differences between the 1996 Summit 670 and a 1999 Summit X 670 are the cylinder porting and heads? I own a '96 and was given a 1999 with low compression that I'm thinking about rebuilding. I'm wondering if it would be worth putting the head/cylinders and possibly...

I'm going through my 1996 Summit 670 to replace the rotary valve gear and was thinking about freshening up the top end. Are SPI pistons the way to go or is there a better brand that you all are using for this motor? Thanks

So I diagnosed part of the problem on my 1996 Summit 670 that was only barely running on one cylinder. I found that the rotary valve isn't working. I haven't pulled the cover off yet, is there anything that I need to know before I rip into it? What would cause the valve not to spin?

I recently traded for a 1996 Summit 670 and it has some issues. It has some upgrades that I am trying to figure out. It has twin pipes and a pyrometer, the clutch is reworked, and the HAC system has been eliminated. The previous owner said it didn't perform well when he took it to the...

I've recently picked up a 1996 Ski doo Summit 670 and have learned a lot from this forum. The Summit has some mods and I'm trying to make it work reliably and with good performance. I live just north of Anchorage, Alaska and plan to ride in the mountains around here. Thanks for all the good...