Click here for more parts. The subsequent pages give detailed procedures. A pinched or restricted fuel line. Seemed like a deal back then. Because this information has come from many sources we can not guarantee its accuracy. Always include your engine model and serial numbers to be sure you receive the correct parts. An inlet needle in carburetor that is stuck open or closed.
Check - Air vent must be open all-the-way and free from restrictions. If, it is found that the anti-siphon valve is the cause of the problem, either 1 replace the anti-siphon valve or 2 replace it with a solenoid-operated fuel shutoff valve. Repair kits are available to overhaul a defective pump. . Improperly mixed fuel; contaminants water, dirt, etc. Note the engine speed shown on the shop tachometer; the engine should idle between 725 rpm and 775 rpm. Check condition of all fuel lines and replace any found to be bad.
Be sure to do your testing under your normal boating conditions and with a good propeller not bent, cracked, or excessively chipped. It was 150-150 on each cyl. The stainless prop causes quite a bit of pull to the right which is very annoying. Clean or replace fuel filter. A pinched, cut or restricted fuel line; also loose fuel line connection.
The engine appears to be immaculately maintained, the owner had all original receipts, repair invoices, shop manual,etc. Crankcase pulsating pressure created by the up-and-down movement of piston is transferred to fuel pump by way of a passage hole between crankcase and fuel pump. Reset float to correct level. The mid-point between the 2 marks point? For same day shipping and our low price guarantee, call us at 877 388-2628. Tighten the vent plug with the screwdriver. The iboats are another excellent source of information. They were meant to be sold for less money because they had fewer bells and whistles.
The ideal idle is somewhere near the midpoint of this range, about 750 rpm. I have owned both a 48 and 88spl on Whalers, great engines. Worn out fuel pump diaphragm. It also might have the older style ignition system, etc. They sound like they are fine. Check and tighten all fuel line connections. Oddly, it also has no in-line gas filter that I can find.
Allow the oil to drain completely. Inspect reeds as outlined in Section 4A. Depress the piston stop plunger until it touches the piston and then tighten the locknut. A hole or cut in fuel line. Air vent must be open and free from contaminants. The symptoms point to a lack of fuel, yet the pumps may check out satisfactorily when pressure tested Chapter Three. As I said I owned 2 and never knew.
Johnson evinrude 11 Johnson 7 Omc 5 Db electrical 3 Evinrude johnson 3 Gear pros 2 Max motosports 2 Autokay 1 Bulk 1 Classic accessories 1 Davis instruments 1 Def 1 East lake marine electric 1 Estink 1 Evinrude 1 Full power plus 1 Johnson evirude 1 Johnsonn evinrude 1 Keenso 1 Leader accessories 1 Michigan 1 Sei marine products 1 Sierra international 1 Unbranded 1 Wake monsoon boat motor covers 1 Yosoo 1 Color Johnson evinrude 11 Johnson 7 Omc 5 Db electrical 3 Evinrude johnson 3 Gear pros 2 Max motosports 2 Autokay 1 Bulk 1 Classic accessories 1 Davis instruments 1 Def 1 East lake marine electric 1 Estink 1 Evinrude 1 Full power plus 1 Johnson evirude 1 Johnsonn evinrude 1 Keenso 1 Leader accessories 1 Michigan 1 Sei marine products 1 Sierra international 1 Unbranded 1 Wake monsoon boat motor covers 1 Yosoo 1. Please use our Propeller Guide to narrow your Johnson propeller options to your specific engine. The problem with this is that they did not sit around unused very well with so little oil in the fuel mix with the result being less oil left on the cylinder walls and an increased amount of rust or corrosion resulting which was ultimately detrimental to the motors. If, after using a separate fuel supply, it is found that the anti-siphon valve is the cause of the problem, there are 2 solutions to the problem; either 1 remove the anti-siphon valve or 2 replace it with a solenoidoperated fuel shutoff valve. A needle stuck open, will cause a flooding condition.
I ran these 50:1 even through they were 100:1 motors. Improper main jet or restricted jet. Information on this page is provided to you as a free service of iboats. Testing Install clear fuel hose s between fuel pump and carburetor s. Thus, for safety and other reasons, it is a good idea to verify information here to make sure it matches up with your boat. The problem with a heavy mix is you will eventually carbon it up and stick a ring and score a cyl. Re: What's the difference in a 48 spl and a 50 hp Johnson?? Gaskets should always be replaced on fuel pump assembly.