Long Term Storage “Winterization” Checklist - Yamaha Outboards

Long Term Storage “Winterization” Checklist
When storing an engine for a prolonged period of time (2 months or longer), several important procedures should be performed to
prevent engine issues. This information is contained in the Owner’s Manual and is summarized here as a check list to review with your
Yamaha dealer.
Depending on your location your local authorized Yamaha dealer may have additional procedures for long term storage. Consult your
owners manual and local Yamaha authorized dealer for a complete checklist. If you need to find a dealer, visit the dealer locator on
YMBS.
TWO STROKE OUTBOARD
Fresh water flushed outboard
Cleaned powerhead and entire external outboard to remove salt, dirt, and grime
Filled oil reservoir with Yamalube ® 2M TC-W3 ® two stroke outboard oil
Changed gear oil using Yamalube Marine Lower Unit Gearcase Lube
Replaced fill and drain plug washers on lower unit
Fogged engine with Yamaha Stor-Rite Engine Fogging Oil
Emptied fuel from primary fuel filter cup, replaced filter element
Changed 10-micron water separating filter (if applicable)
Drained fuel from vapor separator tank or carburetor depending on model*
Greased all fittings inside and outside of motor including prop shaft using appropriate Yamalube Marine Grease
Charged and disconnected battery
Sprayed powerhead and rubber components with Yamaha Silicone Engine Protectant and Lubricant
Covered motor and console/gauges
Removed boat drain plug (dry storage boats only)
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FOUR STROKE OUTBOARD
Fresh water flushed outboard
Cleaned powerhead and entire external outboard to remove salt, dirt, and grime
Changed Engine oil using Yamalube 4M FC-W ® four stroke outboard oil
Changed oil filter
Changed lower unit oil using Yamalube Marine Lower Unit Gearcase Lube
(V MAX SHO ® , V6 Offshore, and V8 outboards require Yamalube Marine Lower Unit Gearcase Lube HD)
Replaced fill and drain plug washers on lower unit
Drained fuel from vapor separator tank or carburetor depending on model *
Emptied fuel from primary fuel filter cup, replaced filter element
Changed 10-micron water separating filter (if applicable)
Fogged engine with Yamaha Stor-Rite Engine Fogging Oil
Greased all fittings inside and outside of motor including prop shaft using appropriate Yamalube Marine Grease
Charged and disconnected battery
Sprayed powerhead and rubber components with Yamaha Silicone Engine Protectant and Lubricant
Covered motor and console/gauges
Removed boat drain plug (dry storage boats only)
FUEL TANK
Prior to the last operation of the engine before storage, place
the appropriate amount of Ring Free Plus and Yamaha Fuel
Conditioner and Stabilizer Plus in the fuel per the instructions
on the containers. Ring Free Plus will help keep the fuel system
clean, and the stabilizer will help prevent the fuel from
breaking down during storage. Run the engine for a sufficient
amount of time to ensure the stabilized fuel courses
completely through the entire fuel system. NOTE: For best
protection, Yamaha’s Ring Free Plus and Fuel Conditioner and
Stabilizer Plus should be used on a continuous basis. Instructions
are on the labels.
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Depending on length of time the unit will be in storage and fuel quality in your area, there are two options for fuel storage:
1. Fill the tank 7/8 full with fuel then add proper amounts of Ring Free Plus and Yamaha Fuel Conditioner and Stabilizer Plus and
operate the engine until treated fuel is run through the entire fuel system.
2. Drain the tank and fuel system completely, but still make sure you add Yamaha Fuel Conditioner and Stabilizer Plus to the fuel
before you do this.*
In either case, an extra precaution would be to drain the carburetors or the Vapor Separator Tank (EFI engines) after the stabilized fuel
has been circulated. For any further questions on “winterizing” contact your local authorized Yamaha Dealer or Yamaha Customer
Support at 1-866-894-1626. To find a dealer near you, visit the dealer locator at www.yamahaoutboards.com.
* Consult your Yamaha Owner’s Manual for the recommended storage procedure for your particular Yamaha outboard. Consult your local authorized Yamaha dealer for
recommendations and assistance in determining which fuel tank storage option might work best for your particular situation.
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