6174Kauri
10.05.2021 3:22:49
Take off the top plate and add one shim--part number 0325038--for each cylinder. The shims go behind the leaf valve and under the top plate. You can buy the shims at the outboard motor dealership.
See full version: How to Turn a 9. 9 HP Outboard Into a 15 HP Motor
Take off the top plate and add one shim--part number 0325038--for each cylinder. The shims go behind the leaf valve and under the top plate. You can buy the shims at the outboard motor dealership.
A 15 HP idle jet, part number 338273 [links]
Exchange the idle jet for a 15 HP motor. The part number for a 9.9 idle jet is 388936. The part number for a 15 HP idle jet is 338273. more
Replace the top plate. Install the 15 HP carburetor. Looking from the rear, with the throttle plate in a horizontal position, the internal throat diameter should be 0.875 inches. If this measurement is off by more the 0.2 inches, the carburetor is on crooked. If the internal diameter is 0.675, you may have installed a 9.9 HP carburetor instead of a 15 HP carburetor. more
Two-stroke outboard motors Nissan Marine has long established itself as a trouble-free, easy to use and light engines.
Nissan Marine NS40C Operating Manual [PDF, ENG, 1.9 MB].pdf
Nissan Marine TLDI NSD50A/NSD70A2/NSD90A2 Owner's Operating Manual [PDF, ENG, 3.5 MB].pdf
If you notice an excessive amount of wet and black carbon on your plugs, you may have a bad fuel-water mix. There also could be a leaky head gasket. See a technician.
If your marine engine is sputtering, use a timing light to check each spark plug wire individually, while the engine is operating, for the proper voltage output and ignition spark (your individual model's manual will have these readings). This could indicate which plugs and corresponding fuel cylinders are giving you problems. Remember which plugs are giving you the worst voltage readings. here
If your outboard engine is sputtering at any speed, idle or full throttle, it could be the result of several common malfunctions. You may need to make a few timing adjustments or replace a spark plug, or you may need serious mechanical inquiry. more
Remove your boat from the water and place it on a trailer. Remove all your spark plugs with a ratchet and appropriately sized socket. Clean any residue from each plug contact and plug port. If you notice any erosion, replace the plug. Use a plug gap tool to set the correct measurement on your plug gaps, according to your manufacturer. Test out your boat's operation at full throttle again. more
Dan Harkins has been a full-time journalist since 1997. Prior to working in the alternative press, he served as a staff writer and editor for daily publications such as the "St. Petersburg Times" and "Elyria Chronicle-Telegram." Harkins holds a Bachelor of Arts in journalism from the University of South Florida. more
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