Evinrude Tank

How do i do a tune-up on an outboard motor?

The motor is an older evinrude 140 v4 not sure on the year. This is going to be my first tune up that i have ever done

One of the interesting "marketing" tools for many outboard shops was a "Tune Up Special". In truth since the introduction of fixed jet carburetors and CD ignition systems, there is little to "tune up."

We would routinely change the plugs, and lower unit oil (really just routine maintenance) and put it in the test tank. Check the timing and throttle cam operation. Make sure it ran ok and that was it.

These engines had a bad habit of loosing compression on one cylinder. Most often a ring issue. So, that's a simple compression test. You can do that with the engine still mounted on the boat. It's done by removing one plug at a time and cranking but not starting the engine. You can get a spark checker and connect it to the plug wire to protect the CD ignition. If you have a very low cylinder, you'll need to get it repaired before it fails.

OMC (Evinrude/Johnson). makes a "tune-up in a can". It's really a solvent/oil blend designed to de-carbon the head and free sticking rings. You just follow the instructions on the can. Note this will not fix an engine with cylinder damage.

The service manuals will give you step by step instructions for a "Link-N-Sync" and declining the head. In truth just check out Youtube:

See:https://www.youtube.com/watch?v=1y1X0V9wKx8
See:https://www.youtube.com/watch?v=rtvKZyxbVdg

Read Evinrude Gas fuel Tank Untested Boat Outboard Motor cruise a day metal
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New Johnson Evinrude OMC Fuel Tank Vent 3 and 6 Gallon Fuel Tank 1972 1977
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Vintage OMC Johnson Evinrude Outboard Motor Gas Boat Fuel Can Tank 3 gallon
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Evinrude Vintage Tank Decal Crus A Day 2 PAK FREE SHIP + Free Fish Decal
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evinrude johnson outboard motor lightwin jw 52 54 3012 gas tank base
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Johnson Evinrude Oil Tank 1996 2001 25 30 HP 436033
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1996 Evinrude 35hp Oil Tank Assembly P N 436033
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NEW OEM JOHNSON EVINRUDE OMC 330336 HORN TO CARB PLASTIC GAS TANK SCREW 0330336
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1952 Evinrude 75 HP Model 4443 Outboard Fuel Tank
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FUEL LINE TANK CONNECTOR JOHNSON EVINRUDE OUTBOARD SEACHOICE 20501 BRASS MALE
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1949 Evinrude Elto Sportster 5 HP Gas Tank
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NEW Johnson Evinrude Oil Tank Conversion Kit 176754 1997 1998 90 115 150 175HP
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Johnson Evinrude OMC outboard 174377 VRO Tank Oil Pickup Filter Oem
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JOHNSON EVINRUDE OUTBOARD FUEL TANK PRESSURE CONNECTOR FITTING 1950s
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VTG 4 6 gal Johnson Evinrude metal Gas Boat Fuel Can Tank METAL SCREW on LID
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Johnson Evinrude Fuel Tank Elbow P N 177003
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Evinrude Crus A Day 6 Gal Vintage Tank Decal 2 PAK FREE SHIP + Free Fish Decal
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EVINRUDE CRUIS A DAY 6 GAL GAS TANK MOTOR OUTBOARD BOAT JOHNSON OMC
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Johnson Evinrude VRO Oil Tank
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EVINRUDE CRUIS A DAY 6 GALLON PRESSURE GAS TANK BOAT OUTBOARD MOTOR KIEKHAEFER
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OMC JOHNSON OR EVINRUDE GAS TANK HOSE VALVE 396461 BRAND NEW FREE SHIPPING
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BRP OMC Evinrude Johnson 0175001 Rod Assembly for 18 Gallon VRO Tank
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ShoreLine Marine Johnson Evinrude 3 8 Barb Female Fuel Tank Connector SL52208
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evinrude johnson TWO LINE fuel tank connector repair O Rings sold by pair
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admin posted at 2013-5-12 Category: Boat Parts