Maintenance, Brake fluid – Polaris 2013 ATV Sportsman 500 Tractor INTL User Manual
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MAINTENANCE
Brake Fluid
Check brake fluid levels for both brake systems before each ride. 
Always maintain brake fluid at the recommended level. Do not overfill.
The brakes should feel firm when they're applied. Spongy or weak 
brakes may indicate a fluid leak or low fluid level. A low fluid level 
may also mean that brake pads are worn and need to be replaced. Do not 
operate the vehicle with spongy or weak brakes. See your dealer for ser-
vice.
Operating the Tractor with a spongy brake can result in loss of braking, which 
could cause an accident. Never operate the Tractor with spongy-feeling brakes.
If the fluid level is low add DOT 4 brake fluid only. See page 126 for the 
part numbers of POLARIS products.
An over-full master cylinder may cause brake drag or brake lock-up, which could 
result in serious injury or death. Maintain brake fluid at the recommended level. 
Do not overfill.
Under normal operation, the diaphragm extends into the reservoir as 
fluid level drops. If the fluid level is low and the diaphragm is not 
extended, a leak is likely and the diaphragm should be replaced. To 
ensure proper diaphragm operation, always fill the reservoir as needed 
whenever the cover is loosened or removed. Do not overfill.
Never store or use a partial bottle of brake fluid. Brake fluid is hygroscopic, 
meaning it rapidly absorbs moisture from the air. The moisture causes the 
boiling temperature of the brake fluid to drop, which can lead to early brake fade 
and the possibility of accident or severe injury. After opening a bottle of brake 
fluid, always discard any unused portion.