How to change reed valves on outboard

More valves equals more power by creating. The kit replaces ALL reeds on a motor.

The kit replaces ALL reeds on a motor.

How to change reed valves on outboard. This little series of 7 videos covers replacing the Reed Valves in a Merc outboard motor. Just gonna start by taking the airbox off to get to the mounting bolts for the carburetors. Reed valves sit between the carburetors and the crankcase and theyre essentially just another form of one-way valve.

You see a lot of one-way valves with fuel like in a primer bulb but in this case its a one-way valve for stopping gas flowing backwards. Your standard reed valve should be at least 25 so the bottom line is 2 oz and if the measured size lower than 2 replace the petals. To replace the petals use a blue.

Failing reed valves can result in reduced power at what should be cruising speeds. This can be a frustrating symptom as several other factors also can be present with reduced power as the symptom. However failing reed valves reduces the fuel and air mixture.

This results in fuel being dumped into the carburetor with no flame to ignite it. Put your hand in front of the carb at low idle and see if it comes back wet with fuel. If it does you have a bad reed there.

Another symptom is really lousy idle and no matter what ya do it dont get better. You didnt post the hp or year of your engine so I couldnt say for sure if removing the carbs will get you a look at. Chris Carson Marine Manufacturer of custom reed valves for all outboard applications.

We now offer reed valves for Yamaha Mercury Johnson Evinrude OMC Force Chrysler and more. CCMS Custom Powerheads Reeds. Chris Carsons Marine Service.

Our 1 inch Intake Spacer Plates are HERE For V6 20 24 25 135hp150hp 175hp 200hpMercury 45. More valves equals more power by creating. The dual-stage design allows you to replace your stock reed stop with a Rev-Plate which permits the reeds to open freely and function efficiently.

The multi-port feature of the bottom reed creates more channels for the charge delivering increased velocity to the intake ports. Look up at the reed valves through the bottom of the plate. There should be a minimal amount of light coming through the area where the reed valves meet the valve body.

The Johnson service manual allows for some space between the reed valve and the body. If you see some light coming through use a rubber tipped pencil to gently push the reed valve against the body. Since the carbs 6 must come off and the intake manifold to get access to the 6 reed valve boxs they recommend replacing all of them while in there.

Gaskets new reed boxs at 116 each and labor are about 1400. My question is that I have had 4 JohnsonEvinrude outboards from the mid 80s to the early 90s and they have all been bulletproof. Pull the reed valve manifold apart by hand once it is loose from the engine.

Take out the old reed petals and replace them with a new set. Re-bolt the reassembled manifold to the engine again with the socket wrench. Screw on the intake hose clamp after reinstalling the hose.

Reed valve allows the mixture to move in only one direction from the carburetor to the crankcase. It prevents the mixture from moving back to the carburetor. In the effect reed valve improves reloading of the combustion chamber with fresh air-fuel mixture.

This improves power output of modern two stroke engines. Suction-compression stroke reed valve green is open. The condition of your reeds in a 2 stroke outboard is indeed very critical to proper running quality and performance.

If a reed is broken fractured or missingit is like having a hole in your engineand fuel cannot be properly delivered to the affected cylinder. It is most noticeable at idle and low speed. You may need new reed block gaskets which we can supply on request depending on condition of the originals.

Gasket price and quantity required vary depending on the motor in question. Outboard manufacturers typically have the reeds riveted in placed and replacements are usually sold only as expensive complete reed blocks. The kit replaces ALL reeds on a motor.

Gaskets are not included. Look for the manufacturer and horsepower on the table below to find your application. In some cases reeds for a single reed block are illustrated for space reasons but the kit will contain all the reeds for a your motor.

List Price 11294 B241-16 Reed Kit Boyesen Brass Cages Mercury 30-70hp 34cyl for Aluminum Cages use BCC-16 In Stock. BOYESEN Composite Performance Reeds. MERCURY US-MADE MARINER Outboard Motors.

2 thru 4 CYLINDER MOTORS are HERE. These kits contain all the reed parts need to replace the reeds in your motor. You may need new reed block gaskets which we can supply on request depending on condition of the originals.

Outboard Valve Clearance Adjustment. Outboard Valve Clearance Adjustment In this video I check and adjust the valve clearances on my Honda 40HP four stroke outboard. This involves removing the valve cover and using feeler gauges to measure the gap when the piston is at top dead center.

Find Reed Block Assembly - 855952T3 here. 3 In Stock - Ships Immediately. Offering discount prices on OEM Mercury Marine parts for over 50 years.

Composite Performance Reeds FOR Outboard Motors 2 3 Cylinder V4 thru V8 are HERE. These kits contain all the reed parts need to replace the reeds in your motor. You may need new reed block gaskets which we can supply on request depending on condition of the originals.

Gasket price and quantity required vary depending on the motor in question.