Polaris LXT 550 IQ - Recent Questions, Troubleshooting & Support

no. and you should not need to. Just reassemble and it will be set.

Carbs need to be cleaned. Not getting enough fuel I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

Not getting enough gas. Carbs need to be cleaned I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_a3369546f8067589

If it's 2 cycle the oil is cold and thick and do sent want to feed the heater need to be on or around the oil tank and carb

r u running non ethanol premium? r your plugs fouled?fuel filter clogged? got good spark? call dealer and ask if they got any body with same problem. then ask on line ,describe problem exactly and see if anything pops up.hope it helps.larry too

Question edited for clarity. Question moved to a Polaris Snowmobile category. Rattling is almost certainly the automatic clutch. Backfiring could be due to a few things, and is often lean mixture via the carb rather than rich mixture in the exhaust. Check the plug electrode. Black means it rich, chalky white means it's lean. The correct colour is a straw hue and no fouling. Backfiring is a well known issue. Check timing as well. https://www.google.com/search?q=1994+polaris+indy+sport+440+backfires+through+carb Rattling can be other things as well as listed here https://www.google.com/search?q=1994+polaris+indy+sport+440+rattles ..

Check all electrical connections

Depends if you have computerized ignition and anti-theft. https://powersportsguide.com/lost-snowmobile-key/ Lots of videos with various ideas. https://www.google.com/search?q=bypass+the+ignition+switch+on+a+2015+Polaris+switchback+800

Question edited to include full make and model names. Question moved to the right category. The owner's manual doesn't mention https://www.manualslib.com/manual/784061/Polaris-600-Switchback-Assault.html?page=76#manual But this one does https://www.manualsdir.com/manuals/797585/polaris-2016-600-switchback-assault-144.html?page=104 as do Polaris https://cdn.polarisportal.com/servicemanagement-public/OwnerManuals/9931265/FuseReplacement-51DFC080.html Pictures too. https://www.google.com/search?q=polaris+600+switchback+assault+fuses+location&rlz=1C1QJDB_enCA643CA644&sxsrf=AOaemvIakjZVaw4ddH5z_qBvdbaGJHUI4w:1640992587311&source=lnms&tbm=isch&sa=X&ved=2ahUKEwifj_vhlY_1AhWGKM0KHXifABcQ_AUoAXoECAEQAw&biw=1920&bih=937&dpr=1 ..

your carbs are out of tune

View Relay Controller

Torn rubber manifold or loose hose clamps

The check engine lights up - the piston will die soon. Will help 300 grams of oil in a full tank

Sensor thinks it's still in reverse so engine is limited.

Remove the clutch cover then the spider (special tool required) there are some washers to add between the spider and engine side of clutch shaft to set pulley width. But before you do that when engine is off does belt have side clearance? If the answer is yes, you may only need a new clutch spring as they loose tension with time and idle speed may be engaging clutch

It's not the chi it will be the pickup coils behind the flywheel that are breaking down when they get warm.

Clean the carbs, new fresh gad and plugs.

No 1 is lean. Check fuel flow and needle and seat and any jet blockages. Blow all jets with high pressure air.
Not enough fuel in no1

indicates insufficient voltage at low rpm check the charging circuit , voltage regulator , battery ( load test) and wiring

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