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Hello, great forum here! I bought a non running 1998 Big Boss 500 6x6. The previous owners had done quite a bit of work to it. It has a new carburator, fuel pump, starter, adjusted the valves, new mid sprockets and chain. But they said it wouldn't run. When I got it home I did get it to run, though not very well. It doesn't want to idle and there is a very loud knocking. I didn't run it very long. Hopefully it's just the clutch knocking. It has 4000 miles on the odometer. I popped off the valve cover and the cam looks ok, (it's not flat!) I haven't measured it yet. I still need to check compression. There's no oil in the gearbox, found a crack in the case behind the output shaft. Looks like a mounting point? I think I'll try and find a case half. I should probably tear apart the gear box first, it might be in bad shape inside. Who knows how long it was ran without oil. It does shift between all gears. The rest of it is in fair condition, normal wear and tear for 4000 miles. Sorry I don't have any pictures of it other than the cracks. I should probably make sure the motor is good before I put money into the gearbox. Any tips on things to look for would be appreciated! Thank you

View File 1996-1998 Polaris Big Boss 6x6 Service Manual This is the factory service manual for the Polaris big boss and other ATVs for the years 1996/1997/1998. You can download sections that you need or just download them all for the complete manual Submitter colin james Submitted 05/02/2019 Category Polaris ATV  

View File 1985-1995 Polaris ATV Service Manual This is the service manual for 1985-1995 Polaris ATVs. Download all the chapters for the complete manual. Includes the following Polaris ATV models: Scrambler, Trail Boss, Cyclone, Big Boss, 250, 350, 400, Sportsman, Trail Blazer, Sport, & Magnum. Submitter colin james Submitted 11/25/2018 Category Polaris ATV

View File Polaris 1999-2000 Multiple Models ATV Service Manual This is the service manual for multiple models of polaris atvs from 1999 to 2000 Model Specifications (1999) Trail Blazer Trail Boss Xpress 300 Xplorer 300 Sportsman 335 Sport 400 Scrambler 400 Xplorer 400 Scrambler 500 Magnum 500 Sportsman 500 Big Boss 500 6x6 Model Specifications (2000) Trail Blazer Xplorer 4x4 Trail Boss 325 Magnum 325 (01 Engine) Magnum 325 (04/05 Engine) Xpedition 325 Sportsman 335 Xplorer 400 Scrambler 400 2x4 Scrambler 400 4x4 Xpedition 425 Magnum 500 Scrambler 500 Sportsman 500 Sportsman 6x6 Submitter colin james Submitted 10/19/2018 Category Polaris ATV