sledding
Posting Guru
Joined: Aug 2006
Posts: 1,044
Likes: 1
From: Yorkton Sk
Not a lot without spending bigger $$$ to improve upon that sled. Cleaning the carbs would be definitely #1. Note the size number on the jets and make sure they are the right size for this elevation. Personally I would keep it stock and ride it. I will try and refresh my memory on some other tricks we did to those sleds.
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Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
congrats on the purchase!! I hope it works well for you!! What length of skid/track on a sled like that? One thing I'm loving about fuel injection is not having to clean carbs... On the other hand, if the FICM ever pooches, it'll be big bucks and out of my hands... 
Postmaster
Joined: Jan 2005
Posts: 3,461
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From: Saskatoon, SK
Those old 670 engines had some things that would wake it up - head shave and trim the rotary valve. I think the X package was pretty well done up from the factory. I dont think there was much left on the table there.
The new sleds (at least Polaris and Skidoo) use electronic reverse where the engine runs backwards. I would pay attentiion to chaincase servicing on sleds with mechanical reverse, they were not that great from my experiences.
The new sleds (at least Polaris and Skidoo) use electronic reverse where the engine runs backwards. I would pay attentiion to chaincase servicing on sleds with mechanical reverse, they were not that great from my experiences.
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Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
The yamaha's are still in prehistoric times with a mechanical reverse. This would be fine, but its an electrically actuated mechanical reverse. This is what I've been fighting with with the Phazer I bought for my wife. Something between the switch and the reverse gears has a short or bad ground and only works when you don't really need it. A conversation with the service manager about this was interesting...I said why wouldn't they just have a rod/lever that engaged the reverse gear? You can't tell me that a lever would weigh more than all the parts required to make it electrically actuated. He agreed, but stated that often Yamaha "overthinks" things, end result being they make them more complicated than they really need to be. If they were to make use of the technology that Polaris and Ski-doo has, they'd probably be shaving another 40lbs off their already brutally heavy machines...
FTE Legend
Joined: Aug 2004
Posts: 37,887
Likes: 20
From: North Central Rural Sask.
Ok so I got that 670x summit going earlier this afternoon, and all I can say is wow, that thing has power. With the throttle barely cracked, the thing just wants to go over backwards! I think the 1.75 paddle track doesnt hurt either though!
Im gonna take her for a good burn here right away, and allready loving the reverse!
Surprising how easy it was to change a few fuel lines, and clean the carbs. Everything was set up really nice for taking apart on this sled, im pleasantly surprised in that regards.
Im gonna take her for a good burn here right away, and allready loving the reverse!
Surprising how easy it was to change a few fuel lines, and clean the carbs. Everything was set up really nice for taking apart on this sled, im pleasantly surprised in that regards.
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Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
You need to ride a new 800...
Posting Guru
Joined: Oct 2005
Posts: 2,114
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From: Langham, SK
I got the 700 mxz going this weekend, It hasn't been ridden for atleast 2 years, and sat outside for the last year. I have a lot of cleaning to do, the tarp was all full of mold and the sled needs a good cleaning. the carbs should be cleaned, clutches cleaned ect.
Postmaster
Joined: Jan 2005
Posts: 3,461
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From: Saskatoon, SK
I had a 2000 Summit, the Millenuim Edition. I really liked that 700 engine. The 2000 ZX chassis was the first Skidoo chassis that could take the abuse we used to dish out without breaking...actually, I think there was a 1999 Summit 600 in that chassis if Im not mistaken
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Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
I had a magazine a while back that was celebrating their 25th year of production. They had an article about the "sled of the year" each year since they began. It was interesting how the majority was polaris and yamaha until the '00's. Ski-doo seemed to pull up their socks then, as well as the Cats started becoming more reliable. Nowadays, Cats are one of the most reliable sleds out there, with Ski-doo outnumbering everything and Yamaha 4-strokes putting on lots of heat.
Postmaster
Joined: Jan 2009
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From: Smithers, BC, Canada
Good afternoon from the left coast.
Seams like this thread doesn't have too many pictures so I thought I would share some of mine
My sled (not many action shots of me)
My sled after its first ride, my old sled is sitting next to it after its last ride before I sold it
Some action shots of friends
A couple stuck pictures to finish things off
Seams like this thread doesn't have too many pictures so I thought I would share some of mine
My sled (not many action shots of me)
My sled after its first ride, my old sled is sitting next to it after its last ride before I sold it
Some action shots of friends
A couple stuck pictures to finish things off
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Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
SSSAAAAAWWWWWWEEEEEEEEEEEEEEEETTTTTT!!!
Awesome pics man. Thats much like I remember of sledding back east. Here we have about 18" of snow, perhaps 24" in some places, but total lack of hills, and pillows... I need to get my Assault out there...
Awesome pics man. Thats much like I remember of sledding back east. Here we have about 18" of snow, perhaps 24" in some places, but total lack of hills, and pillows... I need to get my Assault out there...
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Post Fiend
Joined: Aug 2006
Posts: 20,099
Likes: 7
From: Yorkton Sask
I ended up buying the RMK assault/155x2 1/8th competition track... I'd be fine... 
Its been a long time since I rode mountainous terrain though, so it'd take some time for my ***** to get big again.
Its been a long time since I rode mountainous terrain though, so it'd take some time for my ***** to get big again.