2010 Polaris 750 cc FST-IQ 4s turbo TO BUY OR NOT TO BUY - HCS Snowmobile Forums

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Old 03-25-2019, 05:55 PM   #1 (permalink)
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Default 2010 Polaris 750 cc FST-IQ 4s turbo TO BUY OR NOT TO BUY

Hello All Could use some guidance on this sled. Have a chance to purchase this as an end of season deal for $3500 CAD 8000 km. Had a look at it yesterday still looks brand new, track is studded and in good shape. Dealer serviced. I rode for 20 years got out for the last 5 years and am retiring myself next year and need a sled for the cottage. Will be using it for ice fishing and the local trails around the cottage. My last sled was a fusion 600. Need to know if this is a reliable sled, with little downtime as my cottage is in the boonies far away from the nearest Polaris dealer. I have never had an issue with all my other Polaris machines however they were all 2 strokes. The current owner states he goes 2 seasons and then brings it in for service oil change etc. Anything I need to know about venturing into 4 stroke territory or about this sled in general. My local trails are vast so I will be running it not hard but for full 8 hour days. Any insight before I buy would be most appreciated. Thanks Derek
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Old 03-26-2019, 11:44 AM   #2 (permalink)
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Join Date: Aug 2005
Posts: 1,229
Current Sled(s): 19 900T ACE, 16 Gade 1200,
Previous Sled(s): Many
Location: Northern WI
Favorite Riding Area: N Wisc, W. U.P.
19-20 Mileage: 1723 miles
18-19 Mileage: 1813 miles
17-18 Mileage: 1929 miles
16-17 Mileage: 2325
Age: 79
Riding Since: 1972
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I owned an 08 and really liked it. Those are German engines and when they were originally built They were literally blue printed. Problem I had with mine was the wiring harness went bad. They install that before engine is put in. Pinched a lot of harnesses that eventually shorted out. After dealer replaced harness the return oil line came off while riding and burned a connecting rod bearing.


My neighbor asked my advise and he was looking at an original 06. Those they had the most problems with.
I told him not to buy it. He did any how.
Rec'd a call from him from Calumet in the U.P. his engine and gone down on him coming back from Copper Harbor.


Stopped at dealer in Bergland on the way back. Old "grease monkey" mechanic pulled oil dip stick , looked at oil, smelled it and then actually touched it with his tongue.
It was loaded with gas.


After I dropped him and his sled off I checked mine . Only had 500 miles on oil change and it was loaded with gas also. I changed oil and traded off to dealer.

Polaris finally sent me a new short block for mine and I sold that to my neighbor because I had already replaced mine with a used engine when Polaris wasn't going warrantee originally. He is still running that 06 with my new short block.


They use those engines racing in PWC's in AZ.


You want something reliable where you will be using that, I assume will be much solo riding. Stick with their 600 2 stroke.


If you do buy it, stay on top of that oil condition and change it when it smells and is diluted from gas.
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Old 03-30-2019, 04:56 PM   #3 (permalink)
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Thanks for the feedback SnoKing much appreciated.

My solo riding will be no further than I can walk back in case of a breakdown. Do you think all the kinks would have been ironed out for the 2010 model. how would the gas get into the oil this seems to be common with your experience? I get the feeling that I should stick with the 2 stroke as there seems to be too many issues with these 4 strokes.

It is a shame as this owner a retired gent has owned the sled for 5 years no issues he claims but does not use the machine all that much. It still looks brand new. Thanks for your input
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Old 03-30-2019, 05:39 PM   #4 (permalink)
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Posts: 1,084
Current Sled(s): 2015 Ann. 800 Pro-S SB, 2009 Turbo Switchback
Previous Sled(s): 1972 Polaris Charger 400 SS and about 30 sleds since
Location: Twin Cities
Favorite Riding Area: NSST, Vahalla, UP
19-20 Mileage:
18-19 Mileage: 2850
17-18 Mileage: 1000
16-17 Mileage: 220
Age: 57
Riding Since: 1976
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For what its worth, just shy of 10,000 miles on mine and problems have been minimal. Never left me stranded. 09's and up much more problem free than the earlier years. Smooth, quiet, warm, decent ride and (after a ECU reflash) have given some 800's fits. I feel they are a very under-rated machine. Just don't get it stuck!
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2015 Anniversary 800 Pro-S Switchback - SLP pipe/can, Indy Specialty trail clutch kit/balancing, revalved shocks/dual rate FTS spring - HyGear, studded 1.35 Cobra, 7.5" Shapers, 4.5" riser, Sentinel handguards w/ mirrors, Polaris front/rear bumpers, rear/windshield bags

Last edited by Kicker806; 03-31-2019 at 11:57 AM.
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Old 03-30-2019, 08:47 PM   #5 (permalink)
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Current Sled(s): '11 IQ Turbo, '15 Axys 800, '19 850 XC
Previous Sled(s): '12 Pro-R 8, '08 IQ 8, '02 Pro-X
Location: Northwestern WI
Favorite Riding Area: Where the snow is....
19-20 Mileage:
18-19 Mileage: 5060
17-18 Mileage: 5100
16-17 Mileage: 2050
Age: 51
Riding Since: 1976
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I have just over 10K miles on my '11. Most of the issues were on earlier models, had things pretty well ironed out by '10. The gas in the oil was addressed with a higher temp thermostat in the engine. Never had any issue with gas or moisture in the oil with my '11. One of the other common issues that persisted beyond the early years was leaky boost reference lines. The fitting on the throttle body was designed for a 1/8" line, Polaris tried to put a 3/16" line on it and expected it to hold pressure by putting a spring clamp on it. Get the boost up and you could hear it "hissing" under the cowling. Monumentally dumb that it was never fixed. The other longevity related issue was the alternator. If the sled spent a lot of time at high RPM, the bearings in the alternator would wear out. They were simply spinning too fast. However, knowledge of the problem allows you to keep ahead of it. Agree about the sled being underrated. It was "respectable" when stock. I had Precision Sports do an ECU flash in mine. That made it a totally different sled - sleeper for sure. Ride quality was decent if you had a good shock setup (mine was a 121" track). Had the Walker Evans on mine, could run through some pretty nasty trail with it. You'll work to do it, though. The fuel economy was pretty good - didn't matter a lot how you rode it, 14-15mpg (US). I can echo the sentiment about not getting it stuck. If you do, best have eaten your Wheaties that morning or have a couple friends along! Overall, I don't have anything bad to say about mine. One other quirk: I have two-strokes also and my clothes air out completely when I take the FST out for a day. No smell at all by the time I get home. So strange....
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Old 03-31-2019, 01:45 AM   #6 (permalink)
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Join Date: Aug 2005
Posts: 1,229
Current Sled(s): 19 900T ACE, 16 Gade 1200,
Previous Sled(s): Many
Location: Northern WI
Favorite Riding Area: N Wisc, W. U.P.
19-20 Mileage: 1723 miles
18-19 Mileage: 1813 miles
17-18 Mileage: 1929 miles
16-17 Mileage: 2325
Age: 79
Riding Since: 1972
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Quote:
Originally Posted by clackde View Post
Thanks for the feedback SnoKing much appreciated.

My solo riding will be no further than I can walk back in case of a breakdown. Do you think all the kinks would have been ironed out for the 2010 model. how would the gas get into the oil this seems to be common with your experience? I get the feeling that I should stick with the 2 stroke as there seems to be too many issues with these 4 strokes.

It is a shame as this owner a retired gent has owned the sled for 5 years no issues he claims but does not use the machine all that much. It still looks brand new. Thanks for your input

The next 2 responses add some additional info. You will find fewer people available to work on the 4 strokes also. Where you are located and the riding you will do I would suggest their 600 2 stroke.
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Old 03-31-2019, 08:21 PM   #7 (permalink)
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Join Date: Apr 2006
Posts: 2,603
Current Sled(s): '11 IQ Turbo, '15 Axys 800, '19 850 XC
Previous Sled(s): '12 Pro-R 8, '08 IQ 8, '02 Pro-X
Location: Northwestern WI
Favorite Riding Area: Where the snow is....
19-20 Mileage:
18-19 Mileage: 5060
17-18 Mileage: 5100
16-17 Mileage: 2050
Age: 51
Riding Since: 1976
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That is absolutely true. Many dealers have never seen one or worked on one, so that is a disadvantage.
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Old 03-31-2019, 11:56 PM   #8 (permalink)
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Thanks for the info Kicker806 I think I need to buy something lighter for where I will be riding as deep snow is common and getting stuck is not an option. Have an opportunity to buy a 2004 SWITCHBACK 700 LTD. this sled is 3k 4000 miles. Sled still looks new. Much lighter but am concerned with the low mileage over 15 years. Any input would be appreciated.
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Old 04-01-2019, 02:13 AM   #9 (permalink)
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Join Date: Aug 2005
Posts: 1,229
Current Sled(s): 19 900T ACE, 16 Gade 1200,
Previous Sled(s): Many
Location: Northern WI
Favorite Riding Area: N Wisc, W. U.P.
19-20 Mileage: 1723 miles
18-19 Mileage: 1813 miles
17-18 Mileage: 1929 miles
16-17 Mileage: 2325
Age: 79
Riding Since: 1972
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Biggest thing on anything like that would be to check compression and I think that is still the carb version clean those well and possibly even replace jets so you don't have a lean condition
Empty and clean the tank. Put good fuel in. I use fuel injector occasionally during the season. That 700 was a good engine. You mayu find out that the reason it has loww mileage was it wasn't used for many years. Change chain case oil and grease drive axel bearing behind the 2ndary clutch. Make sure the speedo is working. If not the short speedo cable coming off that bearing could be broke which happens when that bearing starts to go.


I just bought a 1996 500 SKIDOO that only had 3600 miles and the last registration it had expired in 2015. Runs fine but carbs had to be boiled out.
I had a 2010 600 switchback was a great sled. Also had a 2003 800 switch
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Old 04-01-2019, 02:18 PM   #10 (permalink)
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Thanks again SnoKing for the great input. I feel a lot better with this sled for the riding I will be taking on in my neck of the woods.
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