Description

Arctic Cat 366 SE 2010 Service Manual – Factory Specs for the Workbench

If you’re tearing into a Arctic Cat 366 SE 2010 Service Manual and you don’t have the factory book on the bench, you’re guessing. Guessing costs time and parts. This is the same 124-page document that Arctic Cat shipped to dealers in 2010. It covers the 366 SE ATV from front bumper to rear axle, and it uses real torque specs—not aftermarket approximations. There’s a reason I tell every junior tech in my shop to start here.

Torque specs matter. Page 2 of the manual lists the factory torque values for every major fastener on the machine, from cylinder head bolts to wheel lug nuts. They give you ft-lb and N-m conversions in a table, so you don’t have to do math. The General Information section also includes the break-in procedure for the engine and transmission, recommended gasoline and oil grades, and preparation for storage. If you skip the break-in steps, don’t complain when the rings don’t seat.

Torque Specifications and Break-In Procedure

The General Information chapter is where you start. It covers General Specifications, the Torque Specifications table, and torque conversion data. The break-in procedure is written for the 366 SE specifically—first hour of operation, varying the throttle load, and checking the oil after the first ride. The manual also includes the correct engine/transmission oil (SAE 10W-40, API service category SJ or higher) and front differential/rear drive lubricant. Using the wrong oil is a fast way to wreck a clutch pack. I’ve seen it happen. Follow the chart on page 3.

Periodic Maintenance: Valve Clearance and Compression Testing

Periodic maintenance is where most DIYers get into trouble because they skip the inspection intervals. This section of the manual lays out a Periodic Maintenance Chart with mileage and calendar triggers. It details the valve/tappet clearance adjustment using a feeler gauge—exact procedure for how to measure and set the intake and exhaust clearances. It also walks through testing engine compression, cleaning the air filter, and checking the spark plug. One thing I like: the manual includes the SPECIAL TOOLS list before the procedures, so you know what wrenches, gauges, and pullers you need before you start. Nothing worse than getting halfway through a job and finding out you need a 54mm socket you don’t own.

For the brake system, the Hydraulic Brake Systems section explains how to check and bleed the lines and inspect the hoses. Pads get replaced with the caliper off, and the burnishing procedure is spelled out. If you’ve ever had a spongy pedal after a pad swap, you skipped the burnish.

Engine/Transmission Overhaul: Top-Side Components

The Engine/Transmission chapter is the largest part of the manual. It starts with troubleshooting—what to check if the engine won’t start, has low power, or makes noise. Then it walks you through removing the engine and transmission as a unit. The Top-Side Components section gets into the valve cover, rocker arms, cylinder head, camshaft, cylinder, and piston. Each sub-section has removing and installing steps with measuring specs: valve stem runout, valve face/seat width, camshaft lobe height, piston-ring end gap. You get the actual tolerances from the factory. This is where a Manual Transmission book won’t help you—you need the exact numbers for this engine.

The Left-Side and Right-Side Components sections cover the stator, rotor, starter motor, V-belt, driven pulley, clutch cover, oil pump, and centrifugal clutch. Inspection procedures for the one-way drive and oil pump pressure are included. For the drive belt, the manual shows the removal and installation sequence with torque specs for the cover bolts.

Source Validity: Factory Arctic Cat Documentation

This is the real OEM manual printed by Arctic Cat in 2010. Not a reprint, not a third-party compilation. The PDF is scanned from the original dealer binder. I’ve used enough aftermarket manuals to spot the difference: they miss torque revisions and they often skip the special tool callouts. This book has the Arctic Cat foreword, the part numbers for genuine parts, and the official service information. If you’re working on a 366 SE, you want the factory data, not a generic ATV guide. Compare it to the tune-up specs in the Arctic Cat 250, 400, 500, 300, 650 Service Manual – OEM Tune-Up Data for related models, but for the 366 SE this is the only source that matters.

Audience Fit: Who Needs This Manual

If you own a 2010 Arctic Cat 366 SE and you do your own maintenance, you need this manual on your phone, tablet, or laptop in the garage. The home mechanic who wants to do an oil change, adjust valves, or replace the drive belt will find the steps clear and the photos helpful. The pro shop guy who charges by the hour will appreciate the troubleshooting flowcharts and the torque spec tables. It’s also useful for anyone buying a used 366 SE—you can check the maintenance schedule against the seller’s records. For suspension work, check the Arctic Cat 250, 400, 500, 300, TBX Service Manual – Suspension if you need that system separately, but the 366 SE manual covers the frame and welds inspection as part of periodic maintenance.

Engine rebuilds require the exact measurements from this manual. Piston-to-cylinder clearance, camshaft runout, valve guide inside diameter—they’re all in here. Without them, you’re assembling a grenade.

FAQ

Does this manual cover the fuel system and carburetor?

Yes. The Engine/Transmission chapter includes troubleshooting for fuel-system issues, and the periodic maintenance section covers the air filter and spark plug. Specific carburetor adjustments are referenced in the idle speed and throttle cable sections.

Can I use this manual for the 2011 Arctic Cat 366 SE?

Yes. The manual covers 2010 and 2011 models; the foreword states it is for the 2011 model year, but the 2010 model uses the same specifications. Check the production date on your VIN.

For drive system details on larger Arctic Cat models, the Arctic Cat 500-650 V-Twin Service Manual Section 6 Drive System covers the belt and pulley system on V-Twins, but the 366 SE manual has the specific V-belt removal and installation for this machine. Also be aware that emission components like Catalytic Converters are not covered here because the 366 SE does not use one.

You need this manual if you work on the 366 SE. Stop chasing internet forum advice that contradicts itself. Access the Factory Manual from our site and put it on your tablet next to the torque wrench.