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Honda Service Check Short Service Connector

While many fuel injection diagnostic tools are expensive and complex, there are some that are simple and easy to use.

Get Your Powersports Battery Ready for Spring

Now that winter is behind us and warmer days are approaching, it’s time to get your powersports vehicle ready for some fun. Yuasa Battery Inc. recommends that owners take these steps to ensure their battery is fresh and ready for 2015.

Polaris Front Hub Fluid Service

Polaris 4×4 models use a Hilliard clutch to engage power to the front wheels.

Harley-Davidson Motorcycles Jackshaft Assembly

Big Harley-Davidson motorcycles are tough on starter motors and starter system mechanical components.

Tech Tips: Repairing and Servicing Fuji 400, 450, 500 and 550cc Engines

Many of the engines that power Polaris ATVs are liquid-cooled, single-cylinder, SOHC 4-stroke units manufactured by Fuji. The 400, 450 and 500cc engines are nearly identical outside of bore and stroke. The newer 550 engine is updated, but some of these tips still apply. The 570 engine has a DOHC head and is unrelated for

Simple Steps to Prepare Your Powersports Battery for Winter

As winter approaches, many powersports vehicle owners will need to store their vehicle until the spring. Maintaining the battery state of charge during extended periods of storage is essential to ensure that the maximum service life is delivered. Owners should also note that many newer-model motorcycles have more key-off drains than previous models. This makes

Replacing Gaskets and Seals

Servicing and repairing powersport vehicles requires replacing gaskets and seals on a regular basis. Trying to reuse seals and gaskets can leave a technician in a world of hurt and wasted time redoing work. Always be prepared to replace any seals and gaskets that are removed during a service or repair procedure. Don’t accelerate the

5 Steps to Setting Sag the Race Tech Way

Static Sag or “Race” Sag is the amount the bike compresses from fully extended, with the rider on board. Here’s how to measure it the Race Tech way. It is a little different than how you may have done it before but is much more accurate as well as consistent. This instruction uses a Sag

Servicing Ball Joints

Front A-arms generally use spherical bearing ball and socket joints to connect to the steering knuckles. The steering tie rods connect to the steering shaft and knuckles with ball joints, and they can be used to connect rear A-arms to a stabilizer bar via a tie rod. These ball joints can be damaged and wear

Engine Decompression Systems

The decompressor system reduces cylinder compression at low rpm for easy starting. Decompressor systems are often used with single cylinder four-stroke engines, but manufacturers sometimes utilize these benefits on other engine configurations including V-twins. The compression is reduced by momentarily opening an exhaust valve on the compression stroke of the piston to partially vent the

CV Axle Boot Repair

The CV axle boot is a weak link in the final drive systems of four wheel drive ATVs and Side-by-Side vehicles. If the boot is damaged the joint can lose its lubricating grease and pick up debris to contaminate the joint. If the boot damage or deterioration is not addressed it will lead to a

The ‘Mysterious’ Little Black Box

Computer, Igniter, CDI, ICM, ECU, and ECM are all names for the black boxes that are the brains behind modern engines. Depending on the type, they control ignition, fuel injection, ABS, display meter or a combination of all. They are very important and often very expensive. Unfortunately, they often unnecessarily take the blame for mysterious