Join Date: Jul 2009
Location: Minneapolis, MN
Thanked 87 Times in 57 Posts
Rep Power: 97
I would try using brake cleaner on the engine followed by compressed air. It cleans off all of the oil and makes it a dull grey look. Oil leaks are then easy to spot. Re run and inspect frequently.
I'm not familiar with the 02 660 engine. I had a 450 that had a plug that leaked on top of the engine. The oil would blow out the plug towards the front of the quad, hit the fan, and blow back everywhere. It took awhile to locate the problem.
07 700 Grizzly
B-Line Control Suspension, Penland Exhaust, Power Commander III Fuel Optimizer, Dynatek CDI Controller, EPI Clutch kit, Rath Racing Front Sway Bar, EHS Air Box Mod, Thumb/Grip/Seat Warmers, Horn, Bottle holder, Grip Donuts, Warn 3k with remote and synthetic wire, Moose Hand Guards, Mud lights/ATR's/Outlaw Tires, ITP Rims, Tamarack Trunk, Fuel Pak, ATV Rocks Skid Plates, 2r Foot Pegs and Rails.
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