Yamaha V-MAX SHO VF250 Maintenance Manual page 13

Primary and in-line filters should be replaced after every 100 hours of engine operation.
•
These are easy to get to and simple to replace.
• VST filters should be inspected and/or replaced after every 300 hours of engine operation,
provided that the 10-micron external and initial on-engine filters have been serviced and
maintained properly. Properly treated fuel will also extend the life of these filters.
What are some other tips I need to know about my fuel system?
Check fuel system components before each trip. It's important to visually and physically
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check the condition of the fuel hoses and connections for any signs of leaks or cracking
each time you use your boat. Give everything the "sniff test". You should also check your
primer bulb. If the bulb does not become firm when squeezed prior to starting the engine,
check for a possible fuel system leak. If none, replace the primer bulb.
How often should I change my fuel filters?
• 10-micron filters should be replaced every fifty hours
of engine operation. Keeping this filter clean and fresh will
help protect the other fuel filters on the engine and extend
their service life. And always carry a spare on board, just in
case you get a load of bad gas and the filter gets overwhelmed.
Tip: Do not simply remove and dump the fuel and re-install the filter, as captured debris
and water could enter the "clean" side of the filter and be released into your fuel system.
• Get rid of carbon and keep it out. Yamaha Internal Engine
Cleaner is a dealer-only applied product that is the strongest and
most effective way to clean out carbon and other build-up from
the inside of your outboard. Once done, be sure to use Ring Free
PLUS regularly to help keep it that way.
• Carburetors need love, too. Late-model carburetors run very
lean, with very small passages that can clog with gum and
varnish. Use Yamalube
or diluted using warm, soapy water, to help clean them up.
Note: Be sure to follow directions. If yours is a two-stroke carburetor,
don't immerse it in solvent for long periods of time; the special sealant
used on it will be removed, resulting in damage and possible negative
running issues.
Gas containers. Be sure to add Fuel Stabilizer & Conditioner PLUS
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and Ring Free PLUS before filling them up, and keep them in a
cool, dark place if possible. Containers available through Yamaha
feature a "Spill-Proof Spout" which shuts off automatically when
the container reaches capacity. This helps prevent spills and
helps them comply with emissions requirements.
All the items in this catalog are available through your local authorized Yamaha Marine
dealer. More information can be found at Maintenance.YamahaOutboards.com.
Carburetor Cleaner Dip full strength,
®
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